10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

 FORM 10-K

☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2019

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period  ___________ to ____________          

Commission File Number: 001-35789

CyrusOne Inc.

(Exact name of registrant as specified in its charter)

Maryland	46-0691837
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

2850 N. Harwood Street, Suite 2200, Dallas, TX 75201

(Address of Principal Executive Offices) (Zip Code)

(972) 350-0060

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class	Trading Symbol	Name of Each Exchange on Which Registered
Common Stock, $.01 par value	CONE	NASDAQ

Securities registered pursuant to Section 12 (g) of the Act: None.

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.  

Yes ý   No ¨

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. 

Yes ¨   No ý

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    

Yes ý   No ¨

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    

Yes ý   No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer”, “accelerated filer”, “smaller reporting company” and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large Accelerated Filer	☒	Accelerated filer	☐
Non-accelerated filer	☐	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).

Yes ☐   No ý

The aggregate market value of the Common Stock owned by non-affiliates on June 30, 2019, was $6.5 billion, computed by reference to the closing sale price of the Common Stock on the NASDAQ Global Select Market on such date.

There were 114,848,445 shares of Common Stock outstanding as of February 14, 2020.

Portions of the definitive proxy statement relating to the Company’s 2020 Annual Meeting of Shareholders are incorporated by reference into Part III of this report to the extent described herein.

EXPLANATORY NOTE

Unless otherwise indicated or unless the context requires otherwise, all references in this report to “we,” “us,” “our,” “our Company” or “the Company” refer to CyrusOne Inc., a Maryland corporation, together with its consolidated subsidiaries, including CyrusOne LP, a Maryland limited partnership. Unless otherwise    indicated or unless the context requires otherwise, all references to “our operating partnership” or “the operating partnership” refer to CyrusOne LP together with its consolidated subsidiaries.

CyrusOne Inc. is a real estate investment trust, or REIT, whose only material asset is its ownership of operating partnership units of CyrusOne LP. CyrusOne Inc. does not conduct business itself, other than acting as the sole beneficial owner and trustee of CyrusOne GP, a Maryland statutory trust, issuing public equity from time to time and guaranteeing certain debt of CyrusOne LP and certain of its subsidiaries. CyrusOne Inc., directly or indirectly, owns all the operating partnership units of CyrusOne LP and has the full, exclusive and complete responsibility for the operating partnership's day-to-day management and control. CyrusOne Inc. itself does not issue any indebtedness but guarantees the debt of CyrusOne LP and certain of its subsidiaries, as disclosed in this report. CyrusOne LP and its subsidiaries hold substantially all the assets of the Company. CyrusOne LP conducts the operations of the business, along with its subsidiaries, and is structured as a partnership with no publicly traded equity. Except for net proceeds from public equity issuances by CyrusOne Inc., which are generally contributed to CyrusOne LP in exchange for operating partnership units, CyrusOne LP generates the capital required for the Company's business through CyrusOne LP's operations and incurrence of indebtedness.

As of December 31, 2019, the total number of outstanding shares of our common stock was approximately 114.8 million.

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TABLE OF CONTENTS

PART I
ITEM 1.	BUSINESS	7
ITEM 1A.	RISK FACTORS	20
ITEM 1B.	UNRESOLVED STAFF COMMENTS	43
ITEM 2.	PROPERTIES	43
ITEM 3.	LEGAL PROCEEDINGS	43
ITEM 4.	MINE SAFETY DISCLOSURES	43
PART II
ITEM 5.	MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES	44
ITEM 6.	SELECTED FINANCIAL DATA	46
ITEM 7.	MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS	48
ITEM 7A.	QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK	69
ITEM 8.	CONSOLIDATED FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA	72
ITEM 9.	CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE	122
ITEM 9A.	CONTROLS AND PROCEDURES	122
ITEM 9B.	OTHER INFORMATION	122
PART III
ITEM 10.	DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE	123
ITEM 11.	EXECUTIVE COMPENSATION	123
ITEM 12.	SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS	123
ITEM 13.	CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND DIRECTOR INDEPENDENCE	123
ITEM 14.	PRINCIPAL ACCOUNTING FEES AND SERVICES	123
PART IV
ITEM 15.	EXHIBITS, FINANCIAL STATEMENT SCHEDULES	123
ITEM 16.	FORM 10-K SUMMARY	123
SIGNATURES		133

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SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This Annual Report on Form 10-K (“Form 10-K”), together with other statements and information publicly disseminated by our company, contains certain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the "Securities Act"), and Section 21E of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). We intend such forward-looking statements to be covered by the safe harbor provisions for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995 and include this statement for purposes of complying with these safe harbor provisions.

In particular, statements pertaining to our capital resources, portfolio performance, financial condition and results of operations contain certain forward-looking statements. Likewise, all of our statements regarding anticipated growth in our funds from operations and anticipated market conditions, demographics and results of operations are forward-looking statements. You can identify forward-looking statements by the use of forward-looking terminology such as “believes,” “expects,” “may,” “will,” “should,” “seeks,” “approximately,” “intends,” “plans,” “estimates” or “anticipates” or the negative of these words and phrases or similar words or phrases that are predictions of or indicate future events or trends and that do not relate solely to historical matters. You can also identify forward-looking statements by discussions of strategy, plans or intentions.

Forward-looking statements involve numerous risks and uncertainties and you should not rely on them as predictions of future events. Forward-looking statements depend on assumptions, data or methods that may be incorrect or imprecise and we may not be able to realize them. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove

incorrect, actual results may vary materially from those anticipated, estimated or projected.

The following factors, among others, could cause actual results and future events to differ materially from those set forth or contemplated in the forward-looking statements:

•loss of key customers;

•economic downturn, natural disaster or oversupply of data centers in the geographic areas that we serve;

• risks related to the development of our properties including, without limitation, obtaining applicable permits, power and connectivity, and our ability to successfully lease those properties;

• weakening in the fundamentals for data center real estate, including but not limited to, decreases in or slowed growth of global data, e-commerce and demand for outsourcing of data storage and cloud-based applications;

•loss of access to key third-party service providers and suppliers;

•risks of loss of power or cooling which may interrupt our services to our customers;

• inability to identify and complete acquisitions and operate acquired properties, including those acquired in the acquisition of Zenium Topco Ltd. and certain other affiliated entities ("Zenium");

•our failure to obtain necessary outside financing on favorable terms, or at all;

•restrictions in the instruments governing our indebtedness;

•risks related to environmental matters;

•unknown or contingent liabilities related to our acquisitions;

•significant competition in our industry;

•loss of key personnel;

•risks associated with real estate assets and the industry;

• failure to maintain our status as a REIT or to comply with the highly technical and complex REIT provisions of the Internal Revenue Code of 1986, as amended (the "Code");

•REIT distribution requirements could adversely affect our ability to execute our business plan;

•insufficient cash available for distribution to stockholders;

•future offerings of debt may adversely affect the market price of our common stock;

• increases in market interest rates will increase our borrowing costs and may drive potential investors to seek higher dividend yields and reduce demand for our common stock;

•market price and volume of stock could be volatile;

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•risks related to regulatory changes impacting our customers and demand for colocation space in particular geographies;

• international activities, including those now conducted as a result of the Zenium acquisition and land acquisitions, are subject to special risks different from those faced by us in the United States;

• the significant uncertainty that remains about the future relationship between the United Kingdom and the European Union as a result of the United Kingdom’s withdrawal from the European Union;

• expanded and widened price increases in certain selective materials for data center development capital expenditures due to international trade negotiations;

•failure to comply with anti-corruption laws and regulations;

•legislative or other actions relating to taxes; and

•other factors affecting the real estate and technology industries generally.

While forward-looking statements reflect our good faith beliefs, they are not guarantees of future performance. For a further discussion of these and other factors that could impact our future results, performance or transactions, see the section entitled “Risk Factors”. Given these risks and uncertainties, investors should not place undue reliance on forward-looking statements as a prediction of actual results. We disclaim any obligation other than as required by law to publicly update or revise any forward-looking statement to reflect changes in underlying assumptions or factors or for new information, data or methods, future events or other changes.

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PART I

ITEM 1.    BUSINESS

The Company

We are a fully integrated, self-managed data center real estate investment trust ("REIT") that owns, operates and develops enterprise-class, carrier-neutral, multi-tenant and single-tenant data center properties. Founded in 2001, CyrusOne Inc. successfully completed an initial public offering and began trading on the NASDAQ Exchange on January 18, 2013. Our data centers are generally purpose-built facilities with redundant power and cooling. They are not network specific and enable customer connectivity to a range of telecommunication carriers. We provide mission-critical data center facilities that protect and ensure the continued operation of information technology ("IT") infrastructure for approximately 1,000 customers in 49 data centers, including two recovery centers, in the United States, United Kingdom, Germany and Singapore.

The following diagram depicts our ownership structure as of December 31, 2019:

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Our Business

We provide mission-critical data center real estate assets that protect and ensure the continued operation of IT infrastructure for our customers. We provide twenty-four hours-a-day, seven-days-a-week security guard monitoring with customizable security features. Our goal is to be the preferred global data center provider to the Fortune 1000, including the largest enterprises and providers of cloud services. As of December 31, 2019, our customers included 204 of the Fortune 1000, or other companies of equivalent size, representing approximately 77% of our annualized rent as of December 31, 2019.

Data centers are highly specialized and secure real estate assets that serve as centralized deployments of server, storage and network equipment. They are designed to provide the space, power, cooling and network connectivity necessary to efficiently operate mission-critical IT equipment. Telecommunications carriers typically provide network access into a data center through optical fiber. The demand for data center infrastructure is being driven by many factors, but most importantly by significant growth in data and increased demand for data processing and storage infrastructure. The market for data center facilities includes established “traditional” enterprises that are web-enabling their applications and business processes, as well as cloud-centric companies with sophisticated technology requirements.

We cultivate long-term strategic relationships with our customers and provide them with solutions for their data center facilities and IT infrastructure requirements. The Company provides high-quality colocation with robust connectivity and the flexibility for customers to scale for future growth. Our offerings provide flexibility, reliability and security delivered through a tailored, customer service focused platform that is designed to foster long-term relationships. We focus on technology and large cloud computing customers that are expanding their data needs rapidly in the public and private cloud environments to provide them with solutions that address their current and future needs. Our facilities and construction design allow us to offer flexibility in density and power resiliency, and the opportunity for expansion as our customers' needs grow. The Company's network of 49 owned or leased data centers and investments with other colocation providers, enable us to provide our customers with solutions in America, Europe and Asia. The platform enables high-performance, low-cost data transfer and accessibility for customers.

As a full-service provider of data center solutions, our primary revenue sources consist of colocation rent and power reimbursements from the lease of our data centers and services or products we provide to our customers including managed services, equipment sales, installation and other services. Colocation leases may include all or portions of a data center, where customers may also lease office space to support their colocation operations. Revenue is primarily based on power usage as well as square footage. Managed services are provided in certain contracts pursuant to contracts ranging from one to five years and include monitoring computer equipment, managing backups and storage, utilization reporting and other related ancillary information technology services using our equipment. Equipment sales, where title transfers to the customer, typically consist of servers, switches, networking equipment, cable infrastructure, cabinets and other miscellaneous technology communication equipment typically installed in our colocation facilities. Other services are generally one-time services and include installation of customer equipment, including products we sell to our tenants, performing customer system reboots, server cabinet and cage management, power monitoring, shipping and receiving, resolving technical issues, and other hands-on service requested by the customer.

Our Competitive Strengths

Our ability to attract and retain the world’s largest customers is attributed to the following competitive strengths, which distinguish us from other data center operators and enable us to continue to grow our operations.

High Quality Customer Base. The high quality of our assets, combined with our reputation for serving the needs of large enterprises and cloud companies, has enabled us to focus on the Fortune 1000, or other companies of equivalent size, to build a quality customer base. We currently have over 1,000 customers from a broad spectrum of industries. Our revenue is generated by an enterprise customer base, as evidenced by the fact that as of December 31, 2019, 77% of our annualized rent comes from the Fortune 1000 or other companies of equivalent size. We serve a diversity of industries, including information technology, financial services, energy, oil and gas, mining, medical, research and consulting services, and consumer goods and services.

For the year ended December 31, 2019, Microsoft Corporation represented 21% of our revenue.

Strategically Located Portfolio. Our portfolio is located in several domestic and international markets possessing attractive characteristics for enterprise-focused data center operations. We have domestic properties in seven of the largest metropolitan areas in the U.S. (Northern Virginia, New York, Chicago, Houston, Phoenix, San Antonio and Dallas) and five of the largest metropolitan areas for Fortune 500 headquarters (New York, Houston, Dallas, Chicago and Cincinnati). We also have six properties in international markets including three in London, two in Frankfurt and one in Singapore. We have data centers under construction in Santa Clara, California, as well as Dublin, the Republic of Ireland and Amsterdam, The Netherlands. We believe cities with large populations or a large number of corporate headquarters are likely to produce incremental demand for IT infrastructure. In addition, being located

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close to our current and potential customers provides chief information officers ("CIOs") with additional confidence when outsourcing their data center infrastructure to us.

Modern, High Quality, Flexible Facilities. Our portfolio includes highly efficient, reliable facilities with flexibility to customize customer solutions and accessibility to hundreds of connectivity providers. To optimize the delivery of power, our properties include modern engineering technologies designed to minimize unnecessary power usage and, in our newest facilities, we are able to provide power utilization efficiency ratios that we believe to be among the best in the multi-tenant data center industry. Fortune 1000 CIOs are frequently dividing their application stacks into various groups as some applications require 100% availability, while others may require significant power to support complex computing, or robust connectivity. Our facility design enables us to deliver different power densities and resiliencies to the same customer footprint, allowing customers to tailor solutions to meet their application needs. In addition, the National IX Platform, discussed below, provides access to hundreds of telecommunication and Internet carriers.

Massively Modular^® Construction Methods. Our Massively Modular^® data center design principles allow us to efficiently stage construction on a large scale and deliver critical power and colocation square feet (CSF) in a timeframe that we believe is one of the best in the industry. We acquire or build a large powered shell capable of scaling with our customers’ power and colocation space needs. Once the building shell is ready, we can build individual data center halls in portions of the building space to meet the needs of customers on a modular basis. This modular data center hall construction can be completed in 12 to 16 weeks to meet our customers’ immediate needs. This short construction timeframe ensures a very high utilization of the assets and minimizes the time between our capital investment and the recognition of customer revenue, favorably impacting our return on investment while also translating into lower costs for our customers. Our design principles also allow us to add incremental equipment to increase power densities as our customers’ power needs increase, which provides our customers with a significant amount of flexibility to manage their IT demands. We believe this Massively Modular^® approach allows us to respond to rapidly evolving customer needs, to commit capital toward the highest return projects and to develop state-of-the-art data center facilities.

Significant Leasing Capability. Our focus on the customer, our ability to scale with their needs, and our operational excellence provide us with embedded future growth from our customer base. During 2019, we signed new leases representing $104.9 million in annualized revenue, with previously existing customers accounting for approximately 75% of this amount. Since December 31, 2018, we have increased our CSF by approximately 346,000 square feet or 9%, while maintaining a high percentage of CSF utilized of 85% and 88% as of December 31, 2019 and 2018, respectively.

Significant, Attractive Expansion Opportunities. As of December 31, 2019, we had 1.9 million net rentable square feet (NRSF) of powered shell available for future development and approximately 499 acres of land that are available for future data center facility development, consisting of 476 acres in US markets and 23 in Europe. The powered shell available for future development in locations that are part of our domestic portfolio consist of approximately 572,000 NRSF in the Northeast (Raleigh-Durham, Northern Virginia and New York Metro), 909,000 NRSF in the Southwest (Texas and Phoenix) and 439,000 NRSF in the Midwest (Chicago and Cincinnati). Our current development properties and available acreage were selected based on extensive site selection criteria and the collective industry knowledge and experience of our management team, with a focus on markets with a strong presence of and high demand by Fortune 1000 companies and providers of cloud services. As a result, we believe that our development portfolio contains properties that are located in markets with attractive supply and demand conditions and that possess suitable physical characteristics to support data center infrastructure.

Differentiated Reputation for Service. We believe that the decision CIOs make to outsource their data center infrastructure has material implications for their businesses and, as such, CIOs look to third-party data center providers that have a reputation for serving similar organizations and that are able to deliver a customized solution. We take a consultative approach to understanding the unique requirements of our customers, and our design principles allow us to deliver a customized data center solution to match their needs. We believe that this approach has helped fuel our growth. Our current customers are also often the source of new contracts, with referrals being an important source of new customers.

Experienced Management Team. Our management team is comprised of individuals drawing on diverse knowledge and skill sets acquired through extensive experiences in the real estate, REITs, telecommunications, technology and mission-critical infrastructure industries.

Balance Sheet Positioned to Fund Continued Growth. As of December 31, 2019, we had $1,153.2 million in available liquidity, including $1,076.8 million in borrowing capacity under our $3.0 billion unsecured credit facility. The credit facility consists of a $1.7 billion revolving credit facility ("$1.7 Billion Revolving Credit Facility"), which includes a $750.0 million multicurrency borrowing sublimit, a 5-year term loan with commitments totaling $1.0 billion ("2023 Term Loan") and a $300.0 million 7-year term loan ("2025 Term Loan") (collectively, the "$3.0 Billion Credit Facility"). The $3.0 Billion Credit Facility also includes an accordion feature providing for an aggregate increase in the revolving and term loan components to $3.8 billion, subject to certain conditions. We believe that we are appropriately capitalized with sufficient financial flexibility and capacity to fund our anticipated growth.

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Experienced Sales Force with Robust Partner Channel. We have an experienced sales force with a particular expertise in selling to large enterprises and providers of cloud services, which can require extensive consultation and drive long sales cycles as these enterprises make the initial outsourcing decision. As of December 31, 2019, we had 49 sales-related employees. We believe the depth, knowledge, and experience of our sales team differentiates us from other data center companies, and we are not as dependent on brokers to identify and acquire customers as some other companies in the industry. To complement our direct sales efforts, we have developed a robust network of partners, including value added resellers, systems integrators and hosting providers.

Business and Growth Strategies

Our objective is to grow our revenue and earnings, and maximize stockholder returns and cash flow, by continuing to expand our data center infrastructure outsourcing business.

Increasing Revenue from Existing Customers and Properties. We have historically generated a significant portion of our revenue growth from our existing customers. We will continue to target our existing customers because we believe that many have significant data center infrastructure needs that have not yet been outsourced, and many will require additional data center space and power to support their growth and their increasing reliance on technology infrastructure in their operations. To address new demand, as of December 31, 2019, we have approximately 1.7 million NRSF currently available for lease. We also have approximately 1.7 million NRSF under development, as well as 1.9 million NRSF of additional powered shell space under roof available for future development and approximately 499 acres of land that are available for future data center facility development.

Attracting and Retaining New Customers. Increasingly, enterprises are beginning to recognize the complexities of managing data center infrastructure in the midst of rapid technological development and innovation. We believe that these complexities, brought about by the rapidly increasing levels of Internet traffic and data, private and public cloud adoption, obsolete existing corporate data center infrastructure, increased power and cooling requirements and increased regulatory requirements, are all driving the need for companies to outsource their data center facility requirements. Consequently, this will significantly increase the percentage of companies that use third-party data center colocation services over the next several years. We believe that our high-quality assets and reputation for serving cloud providers and large enterprises have been, and will be, key differentiators for us in attracting customers that are outsourcing their data center infrastructure needs.

We acquire customers through a variety of channels. We have historically managed our sales process through a direct-to-the-customer model but also utilize third-party leasing agents and indirect leasing channels to expand our universe of potential new customers. Over the past few years, we have developed a robust network of partners in our indirect leasing channels, including value added resellers, systems integrators and hosting providers. These channels, in combination with our marketing strategies, have enabled us to build both a strong brand and outreach program to new customers. Throughout the life cycle of a customer’s lease with us, we maintain a disciplined approach to monitoring their experience, with the goal of providing the highest level of customer service. This personal attention fosters a strong relationship and trust with our customers, which lead to future growth and leasing renewals.

Expanding into New Markets. Our expansion strategy focuses on acquiring and developing new data centers, both domestically and internationally, in markets where our customers are located and in markets with a strong presence of and high demand by Fortune 1000 customers and providers of cloud services. We conduct extensive analysis to ensure an identified market displays strong data center fundamentals, independent of the demand presented by any particular customer. In addition, we consider markets where our existing customers want us to be located. We regularly meet with our customers to understand their business strategies and potential data center needs. We believe that this approach, combined with our Massively Modular^® construction design, reduces the risk associated with expansion into new markets because it provides strong visibility into our leasing opportunities and helps to ensure targeted returns on new developments. When considering a new market, we take a disciplined approach in evaluating potential business, property and site acquisitions, including a site’s geographic attributes, availability of telecommunications and connectivity providers, access to power, and expected costs for development.

Growing Interconnection Business. Our National IX Platform delivers interconnection across states and between metro-enabled sites within the CyrusOne facility footprint and beyond. The platform enables high-performance, low-cost data transfer and accessibility for our customers seeking to connect between CyrusOne facilities, from CyrusOne to their own private data center facility, or with one another via private peering, cross connects and/or public switching environments. Interconnection within a facility or on the National IX Platform allows our customers to share information and conduct commerce in a highly efficient manner not requiring a third-party intermediary, and at a fraction of the cost normally required to establish such a connection between two enterprises. The demand for interconnection creates additional rental and revenue growth opportunities for us, and we believe that customer interconnections increase our likelihood of customer retention by providing an environment not easily replicated by competitors. We act as a trusted neutral party that enterprises, carriers and content companies utilize to connect to each other.

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Our Portfolio

We own and operate 49 data centers, including two recovery centers, totaling 7.1 million NRSF; 85% of the CSF is leased and includes 797 megawatts ("MW") of power capacity. This includes 13 buildings where the Company leases such facilities. We are lessee of approximately 13% of our total operating NRSF as of December 31, 2019. Also included in our total NRSF, CSF and MW are pre-stabilized assets (which include data halls that have been in service for less than 24 months and are less than 85% leased) that have approximately 315,125 NRSF, 28% of the CSF is leased with capacity of 30 MW of power.

In addition, we have properties under development comprising approximately 1.7 million NRSF and 92 MW of power capacity. The estimated total costs to develop these properties is between $544.0 million and $634.0 million. The final cost to develop could change depending on the capital improvements required based on the lease contracts executed on such properties. We also have 499 acres of land available for future data center development. The following tables provide an overview of our operating and development properties as of December 31, 2019.

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CyrusOne Inc.

Data Center Portfolio

As of December 31, 2019

(unaudited)

				Operating Net Rentable Square Feet (NRSF)(a)										Powered Shell  Available for Future  Development (NRSF)(k)  (000)	Available Critical Load Capacity  (MW)(l)
Stabilized Properties(b)	Metro Area	Annualized Rent(c) ($000)		Colocation Space (CSF)(d) (000)	CSF Occupied(e)		CSF Leased(f)		Office & Other(g) (000)	Office & Other Occupied(h)		Supporting Infrastructure(i) (000)	Total(j)  (000)
Dallas - Carrollton	Dallas	$	84,063	379	81	%	81	%	82	46	%	133	595	—	56
Northern Virginia - Sterling V	Northern Virginia	60,046		383	86	%	93	%	11	100	%	145	539	64	66
Northern Virginia - Sterling VI	Northern Virginia	47,424		272	88	%	91	%	35	—	%	—	307	—	57
Northern Virginia - Sterling II	Northern Virginia	35,498		159	100	%	100	%	9	100	%	55	223	—	30
San Antonio III	San Antonio	32,733		132	100	%	100	%	9	100	%	43	184	—	24
Somerset I	New York Metro	31,991		108	81	%	81	%	27	99	%	89	224	186	16
Chicago - Aurora I	Chicago	31,445		113	98	%	98	%	34	100	%	223	371	27	71
Cincinnati - 7th Street***	Cincinnati	31,285		197	65	%	65	%	6	61	%	175	378	46	16
Houston - Houston West I	Houston	28,687		112	75	%	75	%	11	100	%	37	161	3	28
Totowa - Madison**	New York Metro	26,656		51	87	%	87	%	22	89	%	59	133	—	6
Dallas - Lewisville*	Dallas	26,527		114	81	%	81	%	11	63	%	54	180	—	21
Cincinnati - North Cincinnati	Cincinnati	24,910		65	99	%	99	%	45	79	%	53	163	65	14
Phoenix - Chandler VI	Phoenix	24,778		148	100	%	100	%	6	100	%	32	187	279	24
Frankfurt I	Frankfurt	22,280		53	97	%	97	%	8	91	%	57	118	—	18
Houston - Houston West II	Houston	21,190		80	75	%	75	%	4	88	%	55	139	11	12
Austin III	Austin	20,811		62	69	%	69	%	15	98	%	21	98	67	9
San Antonio I	San Antonio	20,258		44	99	%	99	%	6	83	%	46	96	11	12
Phoenix - Chandler II	Phoenix	20,145		74	100	%	100	%	6	53	%	26	105	—	12
Wappingers Falls I**	New York Metro	19,962		37	65	%	65	%	20	87	%	15	72	—	3
Phoenix - Chandler I	Phoenix	19,927		74	100	%	100	%	35	12	%	39	147	31	16
Northern Virginia - Sterling III	Northern Virginia	19,444		79	100	%	100	%	7	100	%	34	120	—	15
Phoenix - Chandler III	Phoenix	19,194		68	100	%	100	%	2	—	%	30	101	—	14
Northern Virginia - Sterling I	Northern Virginia	17,956		78	100	%	100	%	6	69	%	49	132	—	12
Raleigh-Durham I	Raleigh-Durham	17,945		83	88	%	95	%	13	93	%	82	178	235	15
Northern Virginia - Sterling IV	Northern Virginia	15,742		81	100	%	100	%	7	100	%	34	122	—	15
Frankfurt II	Frankfurt	15,616		90	100	%	100	%	9	100	%	72	171	10	35
San Antonio II	San Antonio	14,631		64	100	%	100	%	11	100	%	41	117	—	12
Austin II	Austin	14,621		44	89	%	92	%	2	100	%	22	68	—	5
Phoenix - Chandler V	Phoenix	14,025		72	100	%	100	%	1	95	%	16	89	94	12
Houston - Galleria	Houston	13,994		63	48	%	48	%	23	40	%	25	112	—	14
Florence	Cincinnati	13,661		53	99	%	99	%	47	87	%	40	140	—	9
London I*	London	12,083		30	100	%	100	%	12	56	%	58	100	9	12
Phoenix - Chandler IV	Phoenix	11,570		73	100	%	100	%	3	100	%	27	103	—	12
Cincinnati - Hamilton*	Cincinnati	11,104		47	73	%	73	%	1	100	%	35	83	—	10
San Antonio IV	San Antonio	10,823		60	100	%	100	%	12	100	%	27	99	—	12
London II*	London	9,989		64	100	%	100	%	10	100	%	93	166	4	21
Houston - Houston West III	Houston	6,947		53	41	%	42	%	10	100	%	32	95	209	6
London - Great Bridgewater**	London	6,808		10	96	%	96	%	—	—	%	1	11	—	1
Stamford - Riverbend**	New York Metro	6,053		20	23	%	23	%	—	—	%	8	28	—	2
Cincinnati - Mason	Cincinnati	5,212		34	100	%	100	%	26	98	%	17	78	—	4
Chicago - Aurora II (DH #1)	Chicago	4,760		77	47	%	49	%	45	—	%	14	136	272	16
Norwalk I**	New York Metro	4,692		13	100	%	100	%	4	65	%	41	58	87	2
Chicago - Lombard	Chicago	2,414		14	64	%	64	%	4	45	%	12	30	29	3
Stamford - Omega**	New York Metro	1,234		—	—	%	—	%	19	79	%	4	22	—	—

12

CyrusOne Inc.
Data Center Portfolio
As of December 31, 2019
(Unaudited)
				Operating Net Rentable Square Feet (NRSF)(a)											Powered Shell  Available for Future  Development (NRSF)(k)  (000)	Available Critical Load Capacity  (MW)(l)
	Metro Area	Annualized Rent(c) ($000)		Colocation Space (CSF)(d) (000)	CSF Occupied(e)		CSF Leased(f)		Office & Other(g) (000)	Office & Other Occupied(h)		Supporting Infrastructure(i) (000)		Total(j)  (000)
Totowa - Commerce**	New York Metro	$	666	—	—	%	—	%	20	44	%	6		26	—	—
Cincinnati - Blue Ash*	Cincinnati	633		6	36	%	36	%	7	100	%	2		15	—	1
Singapore - Inter Business Park**	Singapore	368		3	20	%	20	%	—	—	%	—		3	—	1
Stabilized Properties - Total		$	902,801	3,937	87	%	88	%	705	66	%	$	2,178	6,820	1,739	767
Pre-Stabilized Properties(b)
Northern Virginia - Sterling VIII	Northern Virginia	8,805		61	37	%	37	%	4	—	%	25		90	—	6
Dallas - Carrollton (DH #7)	Dallas	4,100		48	38	%	57	%	—	—	%	—		48	—	6
Dallas - Allen (DH #1)	Dallas	1,056		79	9	%	9	%	—	—	%	58		137	204	6
London II* -(DH #3)	London	—		17	—	%	—	%	—	—	%	$	—	17	—	7
London I* -(DH #1)	London	—		8	—	%	—	%	—	—	%	—		8	—	3
Somerset I (DH #14)	New York Metro	—		16	—	%	40	%	—	—	%	—		16	—	2
All Properties - Total		$	916,763	4,165	83	%	85	%	709	66	%	2,261		7,135	1,942	797

* Indicates properties in which we hold a leasehold interest in the building shell and land. All data center infrastructure has been constructed by us and is owned by us.

** Indicates properties in which we hold a leasehold interest in the building shell, land, and all data center infrastructure.

*** The information provided for the Cincinnati - 7th Street property includes data for two facilities, one of which we lease and one of which we own.    

(a) Represents the total square feet of a building under lease or available for lease based on engineers' drawings and estimates but does not include space held for development or space used by CyrusOne.

(b) Stabilized properties include data halls that have been in service for at least 24 months or are at least 85% leased. Pre-stabilized properties include data halls that have been in service for less than 24 months and are less than 85% leased.

(c) Represents monthly contractual rent (defined as cash rent including customer reimbursements for metered power) under existing customer leases as of December 31, 2019 multiplied by 12. For the month of December 2019, customer reimbursements were $137.6 million annualized and consisted of reimbursements by customers across all facilities with separately metered power. Customer reimbursements under leases with separately metered power vary from month-to-month based on factors such as our customers' utilization of power and the suppliers' pricing of power. From January 1, 2018 through December 31, 2019, customer reimbursements under leases with separately metered power constituted between 11.6% and 19.4% of annualized rent. After giving effect to abatements, free rent and other straight-line adjustments, our annualized effective rent as of December 31, 2019 was $906.7 million. Our annualized effective rent was lower than our annualized rent as of December 31, 2019 because our negative straight-line and other adjustments and amortization of deferred revenue exceeded our positive straight-line adjustments due to factors such as the timing of contractual rent escalations and customer payments for services.

(d) CSF represents the NRSF at an operating facility that is currently leased or readily available for lease as colocation space, where customers locate their servers and other IT equipment.

(e) Percent occupied is determined based on CSF billed to customers under signed leases as of December 31, 2019 divided by total CSF. Leases signed but that have not commenced billing as of December 31, 2019 are not included.

(f) Percent leased is calculated by dividing CSF under signed leases for colocation space (whether or not the lease has commenced billing) by total CSF.

(g) Represents the NRSF at an operating facility that is currently leased or readily available for lease as space other than CSF, which is typically office and other space.

(h) Percent occupied is determined based on Office & Other space being billed to customers under signed leases as of December 31, 2019 divided by total Office & Other space. Leases signed but not commenced as of December 31, 2019 are not included.

(i) Represents infrastructure support space, including mechanical, telecommunications and utility rooms, as well as building common areas.

(j) Represents the NRSF at an operating facility that is currently leased or readily available for lease. This excludes existing vacant space held for development.

(k) Represents space that is under roof that could be developed in the future for operating NRSF, rounded to the nearest 1,000.

(l) Critical load capacity represents the aggregate power available for lease and exclusive use by customers expressed in terms of megawatts. The capacity reported is for non-redundant megawatts, as we can develop flexible solutions to our customers at multiple resiliency levels. Does not sum to total due to rounding.

13

CyrusOne Inc.

NRSF Under Development

As of December 31, 2019

(Dollars in millions)

(unaudited)

			NRSF Under Development(a)						Under Development Costs(b)
Facilities	Metropolitan Area	Estimated Completion Date	Colocation Space (CSF) (000)	Office & Other (000)	Supporting Infrastructure (000)	Powered  Shell(c) (000)	Total (000)	Critical Load MW Capacity(d)	Actual to Date(e)		Estimated  Costs to Completion(f)	Total
Northern Virginia - Sterling IX	Northern Virginia	1Q'20	—	—	—	307	307	—	$	46	$41-50	$87-96
Amsterdam I	Amsterdam	1Q'20	39	28	40	194	301	4.0	56		9-20	65-76
Northern Virginia - Sterling VIII	Northern Virginia	2Q'20	61	—	—	—	61	24.0	43		65-77	108-120
London III	London	2Q'20	20	2	45	20	87	6.0	19		22-27	41-46
Raleigh-Durham I	Raleigh-Durham	2Q'20	11	3	—	—	14	2.0	1		9-11	10-12
Frankfurt III	Frankfurt	3Q'20	101	9	109	39	258	35.0	28		155-175	183-203
Northern Virginia - Sterling VII	Northern Virginia	3Q'20	—	—	—	167	167	—	27		64-73	91-100
San Antonio V	San Antonio	3Q'20	67	7	21	105	199	9.0	21		65-74	86-95
Council Bluffs I	Council Bluffs, IA	3Q'20	42	14	18	42	115	6.0	1		59-65	60-66
Dublin I	Dublin	4Q'20	39	10	33	113	195	6.0	12		55-62	67-74
Total			380	73	265	985	1,704	92.0	$	254	$544-634	$798-888

(a) Represents NRSF at a facility for which activities have commenced or are expected to commence in the next 2 quarters to prepare the space for its intended use. Estimates and timing are subject to change. May not sum to total due to rounding.

(b) London development costs are GBP-denominated and shown as USD-equivalent using exchange rate of 1.32. Frankfurt and Amsterdam development costs are EUR-denominated and shown as USD-equivalent using exchange rate of 1.12 as of December 31, 2019.

(c) Represents NRSF under construction that, upon completion, will be powered shell available for future development into operating NRSF.

(d) Critical load capacity represents the aggregate power available for lease and exclusive use by customers expressed in terms of megawatts. The capacity reported is for non-redundant megawatts, as we can develop flexible solutions to our customers at multiple resiliency levels.

(e) Actual to date is the cash investment as of December 31, 2019. There may be accruals above this amount for work completed, for which cash has not yet been paid.

(f) Represents management’s estimate of the total costs required to complete the current NRSF under development. There may be an increase in costs if customers require greater power density.

14

Customer Diversification

Our portfolio is currently leased to approximately 1,000 customers, many of which are leading global companies. The following table sets forth information regarding the 20 largest customers, including their affiliates, in our portfolio based on annualized rent as of December 31, 2019:

CyrusOne Inc.

Customer Sector Diversification^(a) 

As of December 31, 2019

(unaudited)

 

	Principal Customer Industry	Number of Locations	Annualized Rent(b) (000)		Percentage of Portfolio Annualized Rent(c)		Weighted Average Remaining Lease Term in Months(d)
1	Information Technology	11	$	188,006	20.5	%	99.6
2	Information Technology	11	58,852		6.4	%	30.9
3	Information Technology	5	54,674		6.0	%	55.5
4	Information Technology	7	35,175		3.8	%	51.4
5	Information Technology	7	33,659		3.7	%	41.4
6	Information Technology	6	20,186		2.2	%	34.2
7	Financial Services	1	19,486		2.1	%	135.0
8	Healthcare	2	15,442		1.7	%	96.0
9	Research and Consulting Services	3	15,435		1.7	%	24.8
10	Information Technology	4	14,236		1.6	%	44.6
11	Industrials	5	11,182		1.2	%	8.2
12	Telecommunication Services	2	9,966		1.1	%	21.4
13	Information Technology	3	9,954		1.1	%	54.9
14	Financial Services	2	9,795		1.1	%	47.0
15	Telecommunication Services	8	9,637		1.0	%	13.5
16	Consumer Staples	3	9,230		1.0	%	13.9
17	Information Technology	4	8,735		1.0	%	98.7
18	Telecommunication Services	1	8,131		0.9	%	94.3
19	Information Technology	1	7,726		0.8	%	12.0
20	Financial Services	1	6,600		0.7	%	5.0
			$	546,108	59.5	%	65.8

(a) Customers and their affiliates are consolidated.

(b) Represents monthly contractual rent (defined as cash rent including customer reimbursements for metered power) under existing customer leases as of December 31, 2019, multiplied by 12. For the month of December 2019, customer reimbursements were $137.6 million annualized and consisted of reimbursements by customers across all facilities with separately metered power. Customer reimbursements under leases with separately metered power vary from month-to-month based on factors such as our customers' utilization of power and the suppliers' pricing of power. From January 1, 2018 through December 31, 2019, customer reimbursements under leases with separately metered power constituted between 11.6% and 19.4% of annualized rent. After giving effect to abatements, free rent and other straight-line adjustments, our annualized effective rent as of December 31, 2019 was $906.7 million. Our annualized effective rent was greater than our annualized rent as of December 31, 2019 because our positive straight-line and other adjustments and amortization of deferred revenue exceeded our negative straight-line adjustments due to factors such as the timing of contractual rent escalations and customer prepayments for services.

(c) Represents the customer’s total annualized rent divided by the total annualized rent in the portfolio as of December 31, 2019, which was approximately $916.8 million.

(d) Weighted average based on customer’s percentage of total annualized rent expiring and is as of December 31, 2019, assuming that customers exercise no renewal options and exercise all early termination rights that require payment of less than 50% of the remaining rents. Early termination rights that require payment of 50% or more of the remaining lease payments are not assumed to be exercised because such payments approximate the profitability margin of leasing that space to the customer, such that we do not consider early termination to be economically detrimental to us.

15

Lease Distribution

The following table sets forth information relating to the distribution of customer leases in the properties in our portfolio, based on NRSF under lease as of December 31, 2019:

CyrusOne Inc.

Lease Distribution

As of December 31, 2019

(unaudited)

NRSF Under Lease(a)	Number of Customers(b)	Percentage of All Customers		Total Leased NRSF(c) (000)	Percentage of Portfolio Leased NRSF		Annualized Rent(d) (000)		Percentage of Annualized Rent
0-999	639	67	%	136	3	%	$	82,219	9	%
1,000-2,499	120	13	%	185	3	%	45,014		5	%
2,500-4,999	72	7	%	253	5	%	47,890		5	%
5,000-9,999	48	5	%	342	6	%	55,093		6	%
10,000+	78	8	%	4,563	83	%	686,547		75	%
Total	957	100	%	5,480	100	%	$	916,763	100	%

(a) Represents all leases in our portfolio, including colocation, office and other leases.

(b) Represents the number of customers occupying data center, office and other space as of December 31, 2019. This may vary from total customer count as some customers may be under contract, but have yet to occupy space.

(c) Represents the total square feet at a facility under lease and that has commenced billing, excluding space held for development or space used by CyrusOne. A customer’s leased NRSF is estimated based on such customer’s direct CSF or office and light-industrial space plus management’s estimate of infrastructure support space, including mechanical, telecommunications and utility rooms, as well as building common areas.

(d) Represents monthly contractual rent (defined as cash rent including customer reimbursements for metered power) under existing customer leases as of December 31, 2019, multiplied by 12. For the month of December 2019, customer reimbursements were $137.6 million annualized and consisted of reimbursements by customers across all facilities with separately metered power. Customer reimbursements under leases with separately metered power vary from month-to-month based on factors such as our customers' utilization of power and the suppliers' pricing of power. From January 1, 2018 through December 31, 2019, customer reimbursements under leases with separately metered power constituted between 11.6% and 19.4% of annualized rent. After giving effect to abatements, free rent and other straight-line adjustments, our annualized effective rent as of December 31, 2019 was $906.7 million. Our annualized effective rent was greater than our annualized rent as of December 31, 2019 because our positive straight-line and other adjustments and amortization of deferred revenue exceeded our negative straight-line adjustments due to factors such as the timing of contractual rent escalations and customer prepayments for services.

16

Lease Expiration

The following table sets forth a summary schedule of the customer lease expirations for leases in place as of December 31, 2019, plus available space, for each of the 10 full calendar years beginning January 1, 2020, at the properties in our portfolio.

CyrusOne Inc.

Lease Expirations

As of December 31, 2019

(unaudited)

Year(a)	Number of Leases Expiring(b)	Total Operating NRSF Expiring (000)	Percentage of Total NRSF		Annualized Rent(c) (000)		Percentage of Annualized Rent		Annualized Rent at Expiration(d) (000)		Percentage of Annualized Rent at  Expiration
Available		1,655	23	%
Month-to-Month	894	63	1	%	$	24,380	3	%	$	24,455	2	%
2020	2,831	763	11	%	136,872		15	%	137,902		14	%
2021	2,219	679	9	%	142,498		16	%	146,488		15	%
2022	1,529	603	8	%	105,752		11	%	111,609		11	%
2023	387	732	10	%	113,445		12	%	135,415		14	%
2024	227	488	7	%	89,120		10	%	101,475		10	%
2025	62	201	3	%	30,374		3	%	34,261		3	%
2026	46	623	9	%	94,092		10	%	101,536		10	%
2027	25	480	7	%	81,591		9	%	90,469		9	%
2028	17	277	4	%	31,446		3	%	36,783		4	%
2029	7	83	1	%	6,154		1	%	8,771		1	%
2030 - Thereafter	18	487	7	%	61,039		7	%	70,840		7	%
Total	8,262	7,135	100	%	$	916,763	100	%	$	1,000,004	100	%

(a) Leases that were auto-renewed prior to December 31, 2019 are shown in the calendar year in which their current auto-renewed term expires. Unless otherwise stated in the footnotes, the information set forth in the table assumes that customers exercise no renewal options and exercise all early termination rights that require payment of less than 50% of the remaining rents. Early termination rights that require payment of 50% or more of the remaining lease payments are not assumed to be exercised.

(b) Number of leases represents each agreement with a customer. A lease agreement could include multiple spaces and a customer could have multiple leases.

(c) Represents monthly contractual rent (defined as cash rent including customer reimbursements for metered power) under existing customer leases as of December 31, 2019, multiplied by 12. For the month of December 2019, customer reimbursements were $137.6 million annualized and consisted of reimbursements by customers across all facilities with separately metered power. Customer reimbursements under leases with separately metered power vary from month-to-month based on factors such as our customers' utilization of power and the suppliers' pricing of power. From January 1, 2018 through December 31, 2019, customer reimbursements under leases with separately metered power constituted between 11.6% and 19.4% of annualized rent. After giving effect to abatements, free rent and other straight-line adjustments, our annualized effective rent as of December 31, 2019 was $906.7 million. Our annualized effective rent was greater than our annualized rent as of December 31, 2019 because our positive straight-line and other adjustments and amortization of deferred revenue exceeded our negative straight-line adjustments due to factors such as the timing of contractual rent escalations and customer prepayments for services.

(d) Represents the final monthly contractual rent under existing customer leases that had commenced as of December 31, 2019, multiplied by 12.

17

Regulation

General

Properties in our markets are subject to various laws, ordinances and regulations, including regulations relating to common areas. In addition to the regulations described below, we are subject to various federal, state and local regulations, such as state and local fire and life safety regulations. We believe that each of our properties has, or is expected to have when required, the necessary permits and approvals for us to operate our business.

Americans With Disabilities Act

Our properties must comply with Title III of the Americans with Disabilities Act of 1990, or the ADA, to the extent that such properties are “public accommodations” as defined by the ADA. The ADA may require removal of structural barriers to access by persons with disabilities in certain public areas of our properties where such removal is readily achievable. We believe that our properties are in substantial compliance with the ADA and that we will not be required to make substantial capital expenditures to address the requirements of the ADA. However, noncompliance with the ADA could result in imposition of fines or an award of damages to private litigants. The obligation to make readily achievable accommodations is an ongoing one, and we will continue to assess our properties and to make alterations as appropriate in this respect.

Environmental Matters

We are subject to laws and regulations relating to the protection of the environment, the storage, management and disposal of hazardous materials, emissions to air and discharges to water, the cleanup of contaminated sites and health and safety matters. These include various regulations promulgated by the Environmental Protection Agency and other federal, state, and local regulatory agencies and legislative bodies relating to our operations, including those involving power generators, batteries, and fuel storage to support co-location infrastructure. While we believe that our operations are in substantial compliance with environmental, health, and human safety laws and regulations, as an owner or operator of property and in connection with the current and historical use of hazardous materials and other operations at its sites, we could incur significant costs, including fines, penalties and other sanctions, cleanup costs and third-party claims for property damages or personal injuries, as a result of violations of or liabilities under environmental laws and regulations. Fuel storage tanks are present at many of our properties, and if releases were to occur, we may be liable for the costs of cleaning up resulting contamination. Some of our sites also have a history of previous commercial operations, including past underground storage tanks.     

Some of the properties may contain asbestos-containing building materials. Environmental laws require that asbestos-containing building materials be properly managed and maintained and may impose fines and penalties on building owners or operators for failure to comply with these requirements. 

Environmental consultants have conducted Phase I or similar non-intrusive environmental site assessments on recently acquired properties and, if appropriate, additional environmental inquiries and assessments. Nonetheless, we may acquire or develop sites in the future with unknown environmental conditions from historical operations. Although we are not aware of any sites at which we currently have material remedial obligations, the imposition of remedial obligations as a result of spill or the discovery of contaminants in the future could result in significant additional costs to us.

Our operations also require us to obtain permits and/or other governmental approvals and to develop response plans in connection with the use of our generators or other operations. These requirements could restrict our operations or delay the development of data centers in the future. In addition, from time to time, federal, state or local government regulators enact new or revise existing legislation or regulations that could affect us, either beneficially or adversely. As a result, we could incur significant costs in complying with environmental laws or regulations that are promulgated in the future.

Insurance

We carry comprehensive liability, fire, extended coverage, business interruption and rental loss insurance covering all of the properties in our portfolio under a blanket policy. In the opinion of our management, our policy specifications, limits and insurance carriers are appropriate given the relative risk of loss, the cost of coverage and industry practice. We cannot provide any assurance that the business interruption or property insurance we have will cover all losses that we may experience, that the insurance carrier will be solvent, that rates will remain commercially reasonable, that insurance carriers will not cancel our policies, or that the insurance carriers will pay all claims made by us. Certain circumstances, such as acts of war, are generally uninsurable under our policies. See also “Risk Factors-Risks Related to Our Business and Operations." Any losses to our properties that are not covered by insurance, or that exceed our policy coverage limits, could adversely affect our business, financial condition and results of operations.

18

Competition

We compete with numerous developers, owners and operators of technology-related real estate, many of which own properties similar to ours in the same markets in which our properties are located. If our competitors offer space at rental rates below current market rates or below the rental rates we currently charge our customers, or if our competitors offer space that tenants perceive to be superior to ours (based on factors such as available power, security considerations, location or connectivity), we may lose potential customers and we may be pressured to reduce our rental rates below those we currently charge in order to retain customers when our customers’ leases expire or incur costs to improve our properties. In addition, our customers have the option of building their own data center space which can also place pressure on our rental rates.

As a developer of data center space and provider of interconnection services, we also compete for the services of key third-party providers of services, including engineers and contractors with expertise in the development of data centers. There is competition for the services of specialized contractors and other third-party providers required for the development of data centers, increasing the cost of engaging such providers and the risk of delays in completing our development projects.

In addition, we face competition from real estate developers in our sector and in other industries for the acquisition of additional properties suitable for the development of data centers. Such competition may reduce the number of properties available for acquisition, increase the price of these properties and reduce the demand for data center space in the markets we seek to serve.

Employees

As of December 31, 2019, we employ approximately 452 persons, including 52 international employees. None of these employees are represented by a labor union.

Financial Information

For financial information related to our operations, please refer to the financial statements including the notes thereto, included in this Form 10-K.

How to Obtain Our SEC Filings

We file annual, quarterly and current reports, proxy statements and other information with the Securities and Exchange Commission (SEC). All reports we file with the SEC will be available free of charge via EDGAR through the SEC website at http://www.sec.gov. We make available our reports on Forms 10-K, 10-Q, and 8-K (as well as all amendments to these reports), and other information, free of charge, at the "Investors" section of our website at http://www.cyrusone.com. The information found on, or otherwise accessible through, our website is not incorporated by reference into, nor does it form a part of, this report or any other document that we file with the SEC.

19

ITEM 1A.    RISK FACTORS

You should carefully consider all the risks described below, as well as the other information contained in this document when evaluating your investment in our securities. Any of the following risks could materially and adversely affect our business, results of operations or financial condition. The risks and uncertainties described below are those that we currently believe may materially affect our Company. Additional risks and uncertainties of which we are unaware or that we currently deem immaterial also may become important factors that affect our Company. The occurrence of any of the following risks might cause you to lose all or a part of your investment. Some statements in this Form 10-K, including statements in the following risk factors, constitute forward-looking statements. Please refer to the section entitled “Special Note Regarding Forward-Looking Statements.”

Risks Related to Our Business and Operations

A small number of customers account for a significant portion of our revenue. The loss or significant reduction in business from one or more of our large customers could significantly harm our business, financial condition and results of operations, and impact the amount of cash available for distribution to our stockholders.

We currently depend, and expect to continue to depend, upon a relatively small number of customers for a significant percentage of our revenue. Our top 10 customers collectively accounted for approximately 50% of our total annualized rent as of December 31, 2019. We have one customer which accounted for approximately 21% of our revenue as of December 31, 2019. As a result of this customer concentration, our business, financial condition and results of operations, including the amount of cash available for distribution to our stockholders, could be adversely affected if we lose one or more of our larger customers, if one or more of such customers significantly reduce their business with us or if we choose not to enforce, or to enforce less vigorously, any rights that we may have now or in the future against these significant customers because of our desire to maintain our relationship with them.

A significant percentage of our customer base is also concentrated in two industry sectors: information technology and financial services. Enterprises in the information technology and financial services sectors comprised approximately 58% and 15% respectively, of our annualized rent as of December 31, 2019. A downturn in one of these industries could negatively impact the financial condition of one or more of our information technology or financial services customers, including several of our larger customers. In addition, instability in financial markets and economies generally may adversely affect our customers’ ability to replace or renew maturing liabilities on a timely basis, access the capital markets to meet liquidity and capital expenditure requirements and may result in adverse effects on our customers’ financial condition and results of operations. As a result of these factors, customers could default on their obligations to us, delay the purchase of new services from us or decline to renew expiring leases, any of which could have an adverse effect on our business, financial condition and results of operations.

Additionally, if any customer becomes a debtor in a case under the U.S. Bankruptcy Code, applicable bankruptcy laws may limit our ability to terminate our contract with such customer solely because of the bankruptcy or recover any amounts owed to us under our agreements with such customer. In addition, applicable bankruptcy laws could allow the customer to reject and terminate its agreement with us, with limited ability for us to collect the full amount of our damages. Our business, including our revenue and cash available for distribution to our stockholders, could be adversely affected if any of our significant customers were to become bankrupt or insolvent.

A significant percentage of our customer leases expire each year or are on a month-to-month basis, and many of our leases contain early termination provisions. If leases with our customers are not renewed on the same or more favorable terms or are terminated early by our customers, our business, financial condition and results of operations could be substantially harmed.

Our customers may not renew their leases upon expiration. This risk is increased by the significant percentage of our customer leases that expire every year. As of December 31, 2019, leases representing 15%, 16% and 11% of the annualized rent for our portfolio will expire during 2020, 2021 and 2022, respectively, and an additional 3% of the 2019 annualized rent for our portfolio was from month-to-month leases. While historically we have retained a significant number of our customers, including those leasing from us on a month-to-month basis, upon expiration our customers may elect not to renew their leases or renew their leases at lower rates, for less space, for fewer services or for shorter terms. If we are unable to successfully renew or continue our customer leases on the same or more favorable terms or subsequently re-lease available data center space when such leases expire, our business, financial condition and results of operations could be adversely affected.

In addition, many of our leases contain early termination provisions that allow our customers to reduce the term of their leases subject to payment of an early termination charge that is often a specified portion of the remaining rent payable on such leases. The exercise by customers of early termination options could have an adverse effect on our business, financial condition and results of operations.

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We generate a substantial portion of our revenue from a small number of metropolitan markets, which makes us more susceptible to regional economic downturns.

Our properties are located in 13 distinct markets (10 in the U.S., London, U.K., Singapore and Frankfurt, Germany). Seven of our U.S. markets - Cincinnati, Dallas, Houston, New York Metro, Northern Virginia, Phoenix and San Antonio - accounted for approximately 83% of our annualized rent as of December 31, 2019. As such, we are potentially susceptible to local economic conditions and the supply of, and demand for, data center space in these markets. If there is a downturn in the economy, a natural disaster or an oversupply of, or decrease in demand for, data centers in these markets, our business could be adversely affected to a greater extent than if we owned a real estate portfolio that was more diversified in terms of both geography and industry focus.

Even if we have additional space available for lease at any one of our data centers, our ability to meet existing customer requirements or lease this space to existing or new customers could be constrained by our ability to provide sufficient electrical power and cooling capacity.

Customers are increasing their deployment of high-density IT equipment in our data centers, which has increased the demand for power and cooling capacity. As current and future customers increase their power footprint in our facilities over time, we may be required to upgrade our existing infrastructure or add additional infrastructure to meet customer requirements. Power and cooling systems are difficult and expensive to upgrade or install, and such changes may be required at a time or on a timeline during which we lack the financial or operational ability to make such changes. Further, our ability to add additional power could be limited by third party factors such as utility providers, as well as obtaining required permits or approvals. Our failure to timely upgrade or add additional infrastructure could result in a failure to meet the requirements of our existing customers, or limit our ability to increase occupancy rates or density within our existing facilities, whether for new or existing customers. Similarly, even when successful in implementing such changes, we may not be able to pass on any additional costs to our customers.

We do not own all of the land or buildings in which our data centers are located. Instead, we lease or sublease certain of our data center spaces and the ability to retain these leases or subleases could be a significant risk to our ongoing operations.

We do not own all of the land or 13 buildings that account for approximately 897,064 NRSF, or approximately 13% of our total operating NRSF. These leased land and buildings accounted for 14% of our total annualized rent as of December 31, 2019. In addition, future companies that we acquire, particularly outside of the U. S., may lease land or facilities instead of owning them. Our business could be harmed if we are unable to renew the leases for the land or these data centers on favorable terms or at all. Additionally, in several of our smaller facilities we sublease our space, and our rights under these subleases are dependent on our sublandlord retaining its rights under the prime lease. When the primary terms of our existing leases and subleases expire, we generally have the right to extend the terms of our leases and subleases for one or more renewal periods, subject to, in the case of several of our subleases, our sublandlord renewing its term under the prime lease. For four of these leases and subleases, the renewal rent will be determined based on the fair market value of rental rates for the property, and the then prevailing rental rates may be higher than the current rental rates under the applicable lease. The rent for the remaining leases and subleases will be based on a fixed percentage increase over the base rent during the year immediately prior to expiration. Several of our data centers are leased or subleased from other data center companies, which may increase our risk of non-renewal or renewal on less than favorable terms. If renewal rates are less favorable than those we currently have, we may be required to increase revenues within existing data centers to offset such increase in lease payments. Failure to increase revenues to sufficiently offset these projected higher costs would adversely impact our operating income. Upon the end of our renewal options, we would have to renegotiate our lease terms with the applicable landlords.

Additionally, if we are unable to renew the lease at any of our data centers, we could lose customers due to the disruptions in their operations caused by the relocation. We could also lose those customers that choose our data centers based on their locations. In addition, it is not typical for us to relocate data center infrastructure equipment, such as generators, power distribution units and cooling units, from their initial installation. The costs of relocating such equipment to different data centers could be prohibitive and, as such, we could lose the value of this equipment. For these reasons, any lease that cannot be renewed could adversely affect our business, financial condition and results of operations.

Any losses to our properties that are not covered by insurance, or that exceed our coverage limits, could adversely affect our business, financial condition and results of operations.

The properties in our portfolio are subject to risks, including from causes related to riots, war, terrorism or acts of God. For example, our properties located in Texas are generally subject to risks related to tropical storms, tornadoes, hurricanes, floods and other severe weather or natural events and our properties located in the Midwest are generally subject to risks related to earthquakes, tornadoes and other severe weather. Our property in Santa Clara, California is subject to risks related to earthquakes and severe weather or natural events. All our properties could have unknown title defects or encumbrances. While we carry commercial property insurance including business interruption, flood and earth movement covering all of the properties in our portfolio, and

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title insurance on a substantial number of our properties, the amount of insurance coverage may not be sufficient to fully cover losses we may incur.

If we experience a loss that is uninsured or exceeds our policy coverage limits, we could lose the capital invested in the damaged properties as well as the anticipated future cash flows from those properties. In addition, if the damaged properties were subject to recourse indebtedness, we could continue to be liable for the indebtedness even if these properties were irreparably damaged or subject of a loss.

In addition, even if a title defect or damage to our properties is covered by insurance, a disruption of our business caused by a casualty event may result in the loss of business or customers. The business interruption insurance we carry may not fully compensate us for the loss of business or customers due to an interruption caused by a title defect or casualty event.

A failure of an insurance company to make payments to us upon an event of loss covered by an insurance policy could adversely affect our business, financial condition and results of operations. We monitor our insurance carrier's financial strength rating and financial size category by only placing insurance with carriers who have an A.M. Best Rating of A- XII or better. However, it can be difficult to evaluate the stability and net assets or capitalization of insurance companies, and any insurance company's ability to meet its claim payment obligations.

Any failure of our physical infrastructure or services could lead to significant costs and disruptions that could reduce our revenues and harm our brand and reputation.

Our business depends on providing customers with a highly reliable data center environment. We may fail to provide such service as a result of numerous factors, including:

•human error;

•failure to timely deploy adequate infrastructure to meet customer requirements, whether for new or existing customers;

•unexpected equipment failure;

•power loss or telecommunications failures;

•improper building maintenance by us, our vendors, or by our landlords in the buildings that we lease;

•physical or electronic security breaches;

•fire, tropical storm, hurricane, tornado, flood, earthquake and other natural disasters;

•water damage;

•war, terrorism and any related conflicts or similar events worldwide; and

•sabotage and vandalism.

Problems at one or more of our data centers, whether or not within our control, could result in service interruptions or equipment damage. Substantially all of our leases with our customers include terms requiring us to meet certain service level commitments primarily in terms of electrical output to, and maintenance of environmental conditions in, the data center raised floor space leased by such customers. Any failure to meet these commitments or any equipment damage in our data centers, including as a result of mechanical failure, power outage, human error on our part or other reasons, could subject us to liability under our lease terms, including service level credits against customer rent payments, or, in certain cases of repeated failures, the right by the customer to terminate the lease. For example, although our data center facilities are engineered to reliably power and cool our customers’ computing equipment, it is possible that an outage could adversely affect a facility’s power and cooling capabilities, and, in the past, certain of our facilities have experienced minor outages. Depending on the frequency and duration of these outages, the affected customers may have the right to terminate their lease, which could have a negative impact on our business, financial condition and results of operations. As discussed, we may also be required to expend significant financial resources to upgrade or add to existing infrastructure to meet customer requirements for power and cooling, and we may not be financially or operationally able to do so in a timely manner.

We have been and may continue to be vulnerable to security breaches or cyber-attacks which could disrupt our operations and have a material adverse effect on our financial performance and operating results.

Security breaches, cyber-attacks, or disruption, of our or our partners' or customers' physical or information technology infrastructure, networks and related management systems could result in, among other things, unauthorized access to our facilities, a breach of our and our customers’ networks and information technology infrastructure, the misappropriation of our or our customers’ or their customers’ proprietary or confidential information, interruptions or malfunctions in our or our customers’ operations, delays or interruptions to our ability to meet customer needs, breach of our legal, regulatory or contractual obligations, inability to access or rely upon critical business records or other disruptions in our operations. Numerous sources can cause these types of incidents, including: physical or electronic security breaches; viruses, ransomware or other malware; hardware vulnerabilities such as Meltdown and Spectre; accident or human error by our own personnel or third parties; criminal activity or malfeasance (including by our own personnel); fraud or impersonation scams perpetrated against us or our partners or customers; or security events

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impacting our third-party service providers or our partners or customers. Our exposure to cybersecurity threats and negative consequences of cybersecurity breaches will likely increase as we store increasing amounts of customer data. Additionally, as we increasingly market the security features in our data centers, our data centers may be targeted by computer hackers seeking to compromise data security. For instance, in December 2019, we discovered a ransomware program encrypting certain devices, which resulted in availability issues affecting certain managed service customers. Upon discovery of the incident, we initiated our response and continuity protocols to determine what occurred, restore systems and notify the appropriate legal authorities. We continue to investigate and work closely with third-party experts on this matter.

We recognize the increasing volume of cyber-attacks and employ commercially practical efforts to provide reasonable assurance such attacks are appropriately mitigated. Each year, we evaluate the threat profile of our industry to stay abreast of trends and to provide reasonable assurance our existing countermeasures will address any new threats identified. We may be required to expend significant financial resources to protect against or respond to such breaches. Cyber criminals are increasingly using powerful new tactics including evasive applications, proxies, tunneling, encryption techniques, vulnerability exploits, buffer overflows, distributed denial of service attacks, or distributed denial-of-service or DDoS attacks, botnets and port scans. Techniques used to breach security change frequently, and are generally not recognized until launched against a target, so we may not be able to promptly detect that a security breach or unauthorized access has occurred. We also may not be able to implement security measures in a timely manner or, if and when implemented, we may not be able to determine the extent to which these measures could be circumvented. As we provide assurances to our customers that we provide a high level of security, if an actual or perceived security breach occurs, the market’s perception of our security measures could be harmed and we could lose sales and current and potential customers, and such a breach could be particularly harmful to our brand and reputation. Any breaches that may occur could also expose us to increased risk of lawsuits, material monetary damages, potential violations of applicable privacy and other laws, penalties and fines, loss of existing or potential customers, harm to our reputation and increases in our security and insurance costs, which could have a material adverse effect on our business, financial condition and results of operations. In the event of a breach resulting in loss of data, such as personally identifiable information or other such data protected by data privacy or other laws, we may be liable for damages, fines and penalties for such losses under applicable regulatory frameworks despite not handling the data. Furthermore, if a high profile security breach or cyber-attack occurs with respect to another provider of mission-critical data center facilities, our customers and potential customers may lose trust in the security of these business models generally, which could harm our ability to retain existing customers or attract new ones. We cannot guarantee that any backup systems, regular data backups, security protocols, network protection mechanisms and other procedures currently in place, or that may be in place in the future, will be adequate to prevent network and service interruption, system failure, damage to one or more of our systems or data loss in the event of a security breach or attack on our facilities.

In addition, the regulatory framework around data custody, data privacy and breaches varies by jurisdiction and involves complex and rigorous regulatory standards enacted to protect business and personal data in the U.S. and elsewhere. We may not be able to limit our liability or damages in the event of such a loss. For example, the European Union's General Data Protection Regulation (the "GDPR") became effective in 2018. The GDPR imposes additional obligations on companies regarding the handling of personal data and provides certain individual privacy rights to persons whose data is stored. Data protection legislation is also becoming common in the United States at both the federal and state level and may require us to further modify our data processing practices and policies. For example, the state of California, where we have acquired property for future development (including our first Silicon Valley data center), adopted the California Consumer Privacy Act of 2018, which took effect on January 1, 2020 and provides California residents with increased privacy rights and protections with respect to their personal information. Compliance with existing, proposed and recently enacted data privacy laws and regulations can be costly; any failure to comply with these regulatory standards could subject us to legal and reputational risks. Misuse of, or failure to secure, personal information could also result in violation of data privacy laws and regulations, proceedings against the Company by governmental entities or others, fines and penalties, damage to our reputation and credibility and could have a negative impact on our business and results of operations.

Our growth depends on the development of our properties and our ability to successfully lease those properties, and any delays or unexpected costs associated with such projects or the ability to lease such properties may harm our growth prospects, future business, financial condition and results of operations.

Our growth depends in part upon successfully developing properties into operating data center space. Current and future development projects will involve substantial planning, allocation of significant company resources and certain risks, including risks related to zoning, regulatory approvals, construction costs and delays, as well as our ability to raise capital, including both debt and equity, to finance such projects. These projects will also require us to carefully select and rely on the experience of one or more general contractors and associated subcontractors during the construction process. Should a general contractor or significant subcontractor experience financial or other problems during the construction process, we could experience significant delays, increased costs to complete the project and other negative impacts to our expected returns, as well as reputational risk. Site selection is also a critical factor in our expansion plans, and there may not be suitable properties available in our markets at a location that

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is attractive to our customers and has the necessary combination of access to multiple network providers, a significant supply of electrical power, high ceilings and the ability to sustain heavy floor loading. Furthermore, while we may prefer to locate new data centers adjacent to our existing data centers, we may be limited by the inventory and location of suitable properties.

In addition, in developing new properties, we will be required to secure an adequate supply of power from local utilities, which may include unanticipated costs. For example, we could incur increased costs to develop utility substations on our properties in order to accommodate our power needs. Any inability to secure an appropriate power supply on a timely basis or on acceptable financial terms could adversely affect our ability to develop the property on an economically feasible basis, or at all.

We regularly monitor commodity and labor pricing trends related to our data center development capital expenditures, where a large proportion of our current development project costs are under firm price commitments. Should the proportion of such project costs that are firm price commitments decline and prices for certain selective materials increase, including due to changes in trade policy, including recent international trade negotiations as well as the imposition of tariffs, our overall development costs could increase significantly.

These and other risks could result in delays or increased costs or prevent the completion of our development projects and growth of our business, which could adversely affect our business, financial condition and results of operations.

In addition, we have in the past undertaken development projects prior to obtaining commitments from customers to lease the related data center space. We will likely choose to undertake future development projects prior to obtaining customer commitments. Such development involves the risk that we will be unable to attract customers to the relevant properties on a timely basis or at all. If we are unable to attract customers and our properties remain vacant or underutilized for a significant amount of time, our business, financial condition and results of operations could be adversely affected.

We are dependent upon third-party suppliers for power and certain other services, and we are vulnerable to service failures of our third-party suppliers and to price increases by such suppliers.

We generally rely on third-party local utilities to provide power to our data centers. We are therefore subject to an inherent risk that such local utilities may fail to deliver such power in adequate quantities or on a consistent basis, and our recourse against the local utility and ability to control such failures may be limited. If power delivered from the local utility is insufficient or interrupted, we would be required to provide power through the operation of our on-site generators, generally at a significantly higher operating cost than we would pay for an equivalent amount of power from the local utility. We may not be able to pass on the higher cost to our customers. In addition, if the generator power were to fail, we would generally be subject to paying service level credits to our customers, who may in certain instances of repeated failures also have the right to terminate their leases. Furthermore, any sustained loss of power could reduce the confidence of our customers in our services thereby impairing our ability to attract and retain customers, which would adversely affect both our ability to generate revenues and our results of operations.

In addition, even when power supplies are adequate, we may be subject to pricing risks and unanticipated costs associated with obtaining power from various utility companies. While we actively seek to lock-in utility rates, many factors beyond our control may increase the rate charged by the local utility. For instance, municipal utilities in areas experiencing financial distress may increase rates to compensate for financial shortfalls unrelated to either the cost of production or the demand for electricity. Utilities are and may be subject to increasing regulation that could increase the costs of electricity, including wildfire mitigation plans. Utilities may be dependent on, and be sensitive to price increases for, a particular type of fuel, such as coal, oil or natural gas. In addition, the price of these fuels and the electricity generated from them could increase as a result of proposed legislative measures related to climate change or efforts to regulate carbon emissions. In any of these cases, increases in the cost of power at any of our data centers could put those locations at a competitive disadvantage relative to data centers served by utilities that can provide less expensive power. These pricing risks are particularly acute with respect to our customer leases that are structured on a full-service gross basis, where the customer pays a fixed amount for both colocation rental and power. Our business, financial condition and results of operations could be adversely affected in the event of an increase in utility rates under these leases, which, as of December 31, 2019, accounted for approximately 18% of our leased NRSF, because we may be limited in our ability to pass on such costs to these customers.

We depend on third parties to provide network connectivity to the customers in our data centers, and any delays or disruptions in connectivity may adversely affect our business, financial condition and results of operations.

Our customers require internet connectivity and connectivity to the fiber networks of multiple third-party telecommunications carriers. In order for us to attract and retain customers, our data centers need to provide sufficient access for customers to connect to those carriers. While we provide space and facilities in our data centers for carriers to locate their equipment and connect customers to their networks, any carrier may elect not to offer its services within our data centers or may elect to discontinue its service. Furthermore, carriers may periodically experience business difficulties which could affect their ability to provide telecommunications services, or the service provided by a carrier may be inadequate or of poor quality. If carriers were to terminate

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connectivity within our data centers or if connectivity were to be degraded or interrupted, it could put that data center at a competitive disadvantage versus a competitor’s data center that does provide adequate connectivity. A material loss of adequate third-party connectivity could have an adverse effect on the businesses of our customers and, in turn, our own results of operations and cash flow.

Furthermore, each new data center that we develop requires significant amounts of capital to be expended by third-party telecommunications carriers for the construction and operation of a sophisticated redundant fiber network. The construction required to connect multiple carrier facilities to our data centers is complex and involves factors outside of our control, including regulatory requirements, the availability of construction resources and willing and able third-party telecommunications carriers and the sufficiency of such carriers’ financial resources to fund the construction. Additionally, hardware or fiber failures could cause significant loss of connectivity. If we are unable to establish highly diverse network connectivity to our data centers, or if such network connectivity is materially delayed, is discontinued or is subject to failure, our ability to attract new customers or retain existing customers may be negatively affected and, as a result, our results of operations and cash flows may be adversely affected.

The loss of access to key third-party technical service providers and suppliers could adversely affect our current and any future development projects.

Our success depends, to a significant degree, on having timely access to certain key third-party technical providers who are in limited supply and great demand, such as engineering firms and construction contractors capable of developing our properties, and to key suppliers of electrical and mechanical equipment that complement the design of our data center facilities. For any future development projects, we will continue to rely on these providers and suppliers to develop and equip our data centers. Competition for such technical expertise is intense, and there are a limited number of electrical and mechanical equipment suppliers that design and produce the equipment that we require. We may not always have or retain access to such key service providers and equipment suppliers, which could adversely affect our current and any future development projects.

The long sales cycle for data center services may adversely affect our business, financial condition and results of operations.

A customer’s decision to lease space in one of our data centers and to purchase additional services from us typically involves a significant commitment of resources, significant contract negotiations regarding the service level commitments, and significant due diligence on the part of the customer regarding the adequacy of our facilities, including the adequacy of carrier connections. As a result, the sale of data center space has a long sales cycle. Furthermore, we may expend significant time and resources, and incur significant costs, in pursuing a particular sale or customer that may not result in revenue. Our inability to adequately manage the risks associated with the data center sales cycle may adversely affect our business, financial condition and results of operations.

Our international activities are subject to special risks different from those faced by us in the United States, and we may not be able to effectively manage our international business.

Our activities are primarily based in the United States and, with a more limited presence, in Europe and Southeast Asia and, through our strategic partnership with GDS Holdings Limited ("GDS"), the People’s Republic of China ("PRC"). In August 2018, we increased our presence in Europe as a result of the Zenium acquisition, and have since begun site development in Amsterdam and Dublin. Expanding our international activities involves risks not generally associated with activities or investments in the United States, including:

•our limited knowledge of and relationships with sellers, customers, contractors, suppliers or other parties in these markets;

•complexity and costs associated with staffing and managing international development and operations;

•difficulty in hiring qualified management, sales and construction personnel and service providers in a timely fashion;

•problems securing and maintaining the necessary physical and telecommunications infrastructure;

• multiple, conflicting and changing legal, regulatory, entitlement and permitting, and tax and treaty environments with which we have limited familiarity;

•exposure to increased taxation, confiscation or expropriation;

• fluctuations in foreign currency exchange rates, currency transfer restrictions and limitations on our ability to distribute cash earned in foreign jurisdictions to the United States;

•longer payment cycles and problems collecting accounts receivable;

•laws and regulations on content distributed over the Internet that are more restrictive than those in the United States;

• evolving and uncertain local laws, policies, regulations and licenses, including the implementation and enforcement thereof, particularly in the PRC;

• difficulty in enforcing agreements in non-U.S. jurisdictions, including those entered into in connection with our acquisitions, or with our investment in and strategic partnership with GDS, or in the event of a default by one or more of our customers, suppliers or contractors;

•political and economic instability, including sovereign credit risk, in certain geographic regions;

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• the significant uncertainty that remains about the future relationship between the United Kingdom and the European Union as a result of the United Kingdom's withdrawal from the European Union (commonly known as "Brexit") as discussed in “The continuing uncertainty surrounding the United Kingdom’s withdrawal from the European Union may have a negative effect on global economic conditions, financial markets and our business, which could adversely affect our results of operations” below;

•exposure to restrictive foreign labor law practices;

•import and export restrictions and other trade barriers, including imposition of tariffs; and

•increased trade tensions between countries or political and economic unions.

Our inability to overcome these risks could adversely affect our foreign operations, partnerships and growth prospects and could harm our business, financial condition and results of operations.

The ongoing trade conflict between the United States and the PRC may have an adverse effect on the fair value of our GDS investment.

As discussed above, our activities include our strategic partnership with GDS, a developer and operator of high-performance, large-scale data centers in the PRC. We also have an investment in GDS through our ownership of American depositary shares (“ADS”s) of GDS. This equity investment is accounted for using the fair value method and is therefore based on the fair value of our marketable equity investment in GDS with gains and losses recorded in our Consolidated Statements of Operations. The United States has recently advocated for and taken steps toward restricting trade in certain goods, particularly from the PRC. The PRC and certain other countries have retaliated and may further retaliate in response to new trade policies, treaties and tariffs implemented by the United States. Any further actions to increase existing tariffs or impose additional tariffs could result in an escalation of the trade conflict and may have a material negative impact on the economies of not just the United States and the PRC, but the global economy as a whole. If these measures and tariffs affect any of GDS’s customers and their business results and prospects, their demand for, or ability to pay for, GDS’s data center services may decrease, which may materially and adversely affect GDS’s financial condition and results of operations. In addition, if the PRC government were to increase tariffs on any of the items imported by GDS’s suppliers and contract manufacturers from the United States, GDS may not be able to find substitutes with the same quality and price in the PRC or from other countries. As a result, GDS’s costs could increase and its business, financial condition and results of operations may be adversely affected. To the extent that GDS’s stock price is negatively impacted by the changes in trade or investment policies, treaties and tariffs, the fair value of our investment in GDS would be materially adversely affected.

We may be unable to identify and complete acquisitions and successfully operate acquired properties.

We continually evaluate the market for available properties and may acquire data centers or properties suited for data center development when opportunities exist. Our ability to complete acquisitions on favorable terms and to successfully develop and operate acquired properties involves significant risks, including:

• we may be unable to acquire a desired property because of competition from other data center companies or real estate investors;

• even if we are able to acquire a desired property, competition from other potential acquirers may significantly increase the purchase price of such property;

• we may be unable to realize the intended benefits from acquisitions or achieve anticipated operating or financial results;

• we may be unable to finance the acquisition on favorable terms or at all;

• we may underestimate the costs to make necessary improvements to acquired properties;

• we may be unable to quickly and efficiently integrate new acquisitions into our existing operations resulting in disruptions to our operations or the diversion of our management’s attention;

• acquired properties may be subject to reassessment, which may result in higher than expected tax payments;

• we may not be able to access sufficient power on favorable terms or at all;

• market conditions may result in higher than expected vacancy rates and lower than expected rental rates;

• we may incur impairment losses or other charges related to acquired assets or properties;

• we may face challenges in retaining the customers of acquired properties; and

• we may incur significant costs associated with unrealized transactions.

Many of these risks will be outside of our control and any one of them could result in increased costs, decreases in the amount of expected revenue, and diversion of our management's time and energy, which could adversely affect our business, financial condition and results of operations. In addition, even if we successfully operate acquired properties, we may not realize the full benefits of the acquisition, including the synergies, operating efficiencies, or sales or growth opportunities that are expected. If

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we are unable to successfully acquire, develop and operate data center properties, our ability to grow our business and compete will be significantly impaired, which could adversely affect our business, financial condition and results of operations.

We face risks with our international acquisitions associated with investing in unfamiliar metropolitan areas.

We have acquired and may continue to acquire properties on a strategic and selective basis in international metropolitan areas that are new to us. For example, in 2019 we entered new European markets, including Amsterdam and Dublin, and, in August 2018, we completed the Zenium acquisition which resulted in our ownership of two facilities in Frankfurt, Germany, which was a new market to us. When we acquire properties located in new markets, we may face risks associated with a lack of market knowledge or understanding of the local economy and culture, forging new business relationships in the area and unfamiliarity with local government and permitting procedures. In addition, due diligence, transaction and structuring costs may be higher than those we may face in the United States. We work to mitigate such risks through extensive diligence and research and associations with experienced partners; however, we cannot assure you that such risks can be reduced or eliminated.

Any failure to comply with anti-corruption laws and regulations could have adverse effects on our business.

We are subject to laws concerning our business operations, sales and marketing activities in the U.S. and foreign countries where we conduct business. For example, we are subject to the U.S. Foreign Corrupt Practices Act, or the FCPA, which generally prohibits companies and any individuals or entities acting on their behalf from offering or making improper payments or providing benefits to foreign officials for the purpose of obtaining or keeping business. We are also subject to various other anti-bribery, anti-corruption and international trade laws in the U.S. and certain foreign countries, such as the U.K. Bribery Act. Our strategic partnership with GDS is subject to PRC laws and regulations related to anti-corruption, which prohibit bribery of government agencies, state or government owned or controlled enterprises or entities, of government officials or officials that work for state or government owned enterprises or entities, as well as bribery of non-government entities or individuals. There is a risk that our employees, business partners and other third parties could violate these laws, and we could be sanctioned or held liable for actions taken by our employees, business partners and other third parties with respect to our business. We could incur significant expenses in investigating any potential violation and could incur severe criminal or civil sanctions and/or fines as a result of violations or settlements regarding such laws. In addition, any allegations, settlements or violations could materially and adversely impact our reputation and our relationships with current and future customers, suppliers, employees and business partners.

If the PRC government deems that the contractual arrangements in relation to the consolidated variable interest entities of GDS do not comply with PRC regulatory restrictions on foreign investment in the relevant industries, or if these regulations or the interpretation of existing regulations change in the future, we could fail to realize any benefits from our investment in and relationship with GDS.

The PRC government regulates telecommunications-related businesses through strict business licensing requirements and other government regulations. These laws and regulations also include limitations on foreign ownership of PRC companies that engage in telecommunications-related businesses. Because GDS is a Cayman Islands company, GDS is classified as a foreign enterprise under PRC laws and regulations, and its wholly owned PRC subsidiaries are foreign-invested enterprises, or FIEs. GDS conducts its business in PRC through contractual arrangements with its consolidated variable interest entities, or VIEs, and their shareholders. These contractual arrangements are intended to provide GDS with effective control over its consolidated VIEs and enables GDS to receive substantially all of the economic benefits of its consolidated VIEs in consideration for the services provided by its wholly-owned PRC subsidiaries.

There are substantial uncertainties regarding the interpretation and application of PRC laws and regulations, and there can be no assurance that the PRC government, such as the Ministry of Industry and Information Technology, or the MIIT, or the Ministry of Commerce, or the MOFCOM, or other authorities that regulate providers of data center service and other participants in the telecommunications industry would agree that the corporate structure of GDS or any of the above contractual arrangements comply with PRC licensing, registration or other regulatory requirements, with existing policies or with requirements or policies that may be adopted in the future. PRC laws and regulations governing the validity of these contractual arrangements are uncertain and the relevant government authorities have broad discretion in interpreting these laws and regulations.

If the corporate and contractual structure of GDS is deemed by the MOFCOM or MIIT or other regulators having competent authority to be illegal, either in whole or in part, GDS may lose control of its consolidated VIEs and have to modify such structure to comply with regulatory requirements. However, there can be no assurance that GDS could achieve this without material disruption to its business. Further, if its corporate and contractual structure is found to be in violation of any existing or future PRC laws or regulations, the relevant regulatory authorities would have broad discretion in dealing with such violations. Furthermore, new PRC laws, rules and regulations may be introduced to impose additional requirements that may be applicable to the corporate structure and contractual arrangements of GDS. Occurrence of any of these events could materially and adversely affect the business, financial condition and results of operations of GDS and, as a result, could materially limit key anticipated benefits from our investment in and relationship with GDS.

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The continuing uncertainty surrounding the United Kingdom’s withdrawal from the European Union may have a negative effect on global economic conditions, financial markets and our business, which could adversely affect our results of operations.

We expanded our presence in Europe, including the United Kingdom, as a result of the Zenium acquisition in August 2018, and more recently through development of additional European locations, including Amsterdam and Dublin. In June 2016, a majority of voters in the United Kingdom elected to withdraw from the European Union in a national referendum. On October 17, 2019, the United Kingdom and the European Union reached agreement on the revised terms and manner of the United Kingdom's exit from the European Union and the revised terms of a political declaration setting out the framework for the future relationship between the United Kingdom and the European Union. On December 20, 2019, the legislation required to ratify the revised agreement (the “Withdrawal Agreement”) was approved by the United Kingdom government and the Withdrawal Agreement went into effect on January 23, 2020. The Withdrawal Agreement was subsequently signed by the United Kingdom and the European Union on January 24, 2020. Under the terms of the Withdrawal Agreement, the United Kingdom formally left the European Union on January 31, 2020. A transition period began on February 1, 2020, which is expected to last until December 31, 2020. While the Withdrawal Agreement provides for the possibility of one or more extensions of this transition period for up to two additional years, the United Kingdom has currently ruled out any such extension. During the transition period, the United Kingdom and European Union will negotiate an agreement to govern their long-term relationship (the “Final Agreement”). However, if no agreement is reached before December 31, 2020 and if no extension to the transition period is agreed to, the United Kingdom would leave the European Union without an agreement on December 31, 2020 (commonly referred to as a “no deal Brexit”).

As Final Agreement negotiations are ongoing and a no-deal Brexit is still possible, significant uncertainty remains about the future relationship between the United Kingdom and the European Union. The original referendum has also given rise to calls for the governments of other European Union member states to consider withdrawal. These developments, or the perception that any of them could occur, have had and may continue to have a material adverse effect on global economic conditions and the stability of global financial markets, and could significantly reduce global market liquidity and restrict the ability of key market participants to operate in certain financial markets. Asset valuations, currency exchange rates (primarily the British pound sterling and Euro) and credit ratings may be especially subject to increased market volatility. Lack of clarity about future United Kingdom laws and regulations as the United Kingdom determines which European Union laws to replace or replicate in the event of a withdrawal could depress economic activity and restrict our access to capital in the United Kingdom. For example, this lack of clarity could result in canceled contracts, changes in exchange rates or less favorable payment terms. If the United Kingdom and the European Union are unable to negotiate the Final Agreement or if other European Union member states pursue withdrawal, barrier-free access between the United Kingdom and other European Union member states or among the European economic area overall could be diminished or eliminated.

In particular, continued depression in the value of the British pound sterling as compared to the U.S. dollar; potential price increases or unavailability of supplies purchased from companies located in the E.U. or elsewhere; potential disruptions in the markets we serve; and changes in tax laws in the jurisdictions in which we operate could have adverse effects on our business and financial results. In addition, changes resulting from Brexit, including those related to trade agreements, tariffs and customs regulations and currency fluctuations, may cause us to lose customers, suppliers and employees and any of these factors may adversely affect our business, financial condition and results of operations, especially with respect to our European operations. Any of these adverse effects would likely be heightened in the event of a no deal Brexit.

Our customers may choose to develop or relocate into new data centers or expand their own existing data centers, which could result in the loss of one or more key customers or reduce demand for our newly developed data centers.

In the future, our customers may choose to develop or relocate to new data centers or expand or consolidate into their existing data centers that we do not own. In the event that any of our key customers were to do so, it could result in a loss of business to us or put pressure on our pricing. If we lose a customer, we cannot provide assurance that we would be able to replace that customer at a competitive rate or at all, which could adversely affect our business, financial condition and results of operations.

A decrease in the demand for data center space could adversely affect our business, financial condition and results of operations.

Our portfolio of properties consists primarily of data center space. The adverse effect on our business, financial condition and results of operations from a decreased demand for data center space would likely be greater than if we owned a portfolio with a more diversified customer base or less specialized use. Adverse developments in the outsourced data center space industry could lead to reduced corporate IT spending or reduced demand for outsourced data center space. Changes in industry practice or in technology, such as server virtualization technology, more efficient or miniaturization of computing or networking devices, or devices that require higher power densities than today’s devices, could also reduce demand for the physical data center space we provide or make the customer improvements in our facilities obsolete or in need of significant upgrades to remain viable.

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Our properties are not suitable for use other than as data centers, which could make it difficult to sell or reposition them if we are not able to lease available space.

Our data centers are designed solely to house and run computer servers and related information technology equipment and, therefore, contain extensive electrical and mechanical systems and infrastructure. As a result, they are not suited for use by customers as anything other than as data centers and major renovations and expenditures would be required in order for us to re-lease vacant space for more traditional commercial or industrial uses, or for us to sell a property to a buyer for use other than as a data center, which could materially adversely affect our business, results of operations and financial condition.

We may have difficulty managing our growth.

We have significantly and rapidly expanded the size of our Company. For example, we increased our footprint by 6.1% from approximately 6.7 million NRSF at the end of 2018 to approximately 7.1 million NRSF by December 31, 2019. We have also expanded our presence in Europe. Our growth may significantly strain our management, operational and financial resources and systems. An inability to manage our growth effectively or the increased strain on our management, our resources and systems could materially adversely affect our business, financial condition and results of operations.

To fund our growth strategy and refinance our indebtedness, we depend on external sources of capital, which may not be available to us on commercially reasonable terms or at all.

In order to maintain our qualification as a REIT, we are required under the Code, among other things, to distribute at least 90% of our REIT taxable income annually, determined without regard to the dividends paid deduction and excluding any net capital gains. Even if we maintain our qualification as a REIT, we will be subject to U.S. federal income tax at regular corporate rates to the extent that we distribute less than 100% of our REIT taxable income, determined without regard to the dividends paid deduction and including any net capital gains, as well as U.S. federal income tax at regular corporate rates for income recognized by our taxable REIT subsidiaries (each, a TRS). Because of these distribution requirements, we will likely not be able to fund future capital needs, including any necessary acquisition financing, from operating cash flow. Consequently, we intend to rely on third-party capital markets sources for debt or equity financing to fund our growth strategy. In addition, we may need third-party capital markets sources to refinance our indebtedness at or before maturity. Continued or increased turbulence in the U.S., European and other international financial markets and economies, tighter credit conditions and increasing interest rates may adversely affect our ability to replace or renew maturing liabilities on a timely basis, access the capital markets to meet liquidity and capital expenditure requirements and may result in adverse effects on our business, financial condition and results of operations. As such, we may not be able to obtain the debt or equity financing on favorable terms or at all. Our access to third-party sources of capital also depends, in part, on:

•the market’s perception of our growth potential;

•our then-current debt levels;

•market demand for REIT assets;

•our historical and expected future earnings, cash flow and cash distributions;

•the market price per share of our common stock; and

•our lenders' ability to meet their financing commitments.

In addition, our ability to access additional capital may be limited by the terms of our then-existing indebtedness which may restrict our incurrence of additional debt. If we cannot obtain capital when needed, we may not be able to acquire or develop properties when strategic opportunities arise or refinance our debt at or before maturity, and we may need to increase our liquidity by disposing of properties possibly on disadvantageous terms or renewing leases on less favorable terms than we otherwise would, which could adversely affect our business, financial condition and results of operations.

We have significant indebtedness that involves significant debt service obligations, limits our operational and financial flexibility, exposes us to interest rate fluctuations and exposes us to the risk of default under our debt obligations.

As of December 31, 2019, we had a total combined indebtedness, including finance lease liabilities and operating lease liabilities, of approximately $3.1 billion. As of December 31, 2019, we have the ability to borrow up to an additional approximately $1.1 billion under our $3.0 Billion Credit Facility, net of outstanding letters of credit of approximately $8.2 million, subject to satisfying certain financial tests. Our $3.0 Billion Credit Facility also contains an accordion feature that, as of December 31, 2019, allows the operating partnership to request an increase in the total commitment by up to $1.0 billion. There are no limits on the amount of indebtedness we may incur other than limits contained in the indentures governing our 2024 Notes and 2029 Notes (each as defined in Note 12, Debt), our 2027 Notes (as defined in Note 23, Subsequent Event), our $3.0 Billion Credit Facility or future agreements that we may enter into or as may be set forth in any policy limiting the amount of indebtedness we may incur adopted by CyrusOne’s board of directors. A substantial level of indebtedness could have adverse consequences for our business, financial condition and results of operations because it could, among other things:

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• require us to dedicate a substantial portion of our cash flow from operations to make principal and interest payments on our indebtedness, thereby reducing our cash flow available to fund working capital, capital expenditures and other general corporate purposes, including to make distributions on our common stock as currently contemplated or as necessary to maintain our qualification as a REIT;

• require us to maintain certain debt coverage and other financial metrics at specified levels, thereby reducing our financial flexibility and, in the event of a failure to comply with such requirements, creating the risk of a material adverse effect on our ability to fulfill our obligations under our debt and on our business and prospects generally;

• make it more difficult for us to satisfy our financial obligations, including borrowings under the $3.0 Billion Credit Facility;

• increase our vulnerability to general adverse economic and industry conditions;

• expose us to increases in interest rates for our variable rate debt;

• limit our ability to borrow additional funds on favorable terms or at all to expand our business or ease liquidity constraints;

• limit our ability to refinance all or a portion of our indebtedness on or before maturity on the same or more favorable terms or at all;

• limit our flexibility in planning for, or reacting to, changes in our business and our industry;

• place us at a competitive disadvantage relative to competitors that have less indebtedness;

• increase our risk of property losses as the result of foreclosure actions initiated by lenders in the event we should incur mortgage or other secured debt obligations; and

• require us to dispose of one or more of our properties at disadvantageous prices or raise equity that may dilute the value of our common stock in order to service our indebtedness or to raise additional funds to pay such indebtedness at or before maturity.

Failure to hedge effectively against interest rate changes and our increased exposure to foreign currency fluctuations as a result of our foreign currency hedging activities may adversely affect our results of operations.

We seek to manage our exposure to interest rate volatility by using interest rate hedging arrangements, such as floating-fixed interest rate swaps. These arrangements involve risks, such as the risk that counterparties may fail to honor their obligations under these arrangements and that these arrangements may not be effective in reducing our exposure to interest rate changes. Approximately 49% of our total indebtedness as of December 31, 2019 was subject to variable interest rates but not subject to interest rate swaps. Failure to hedge effectively against interest rate changes may materially adversely affect our results of operations.

We also currently have and may decide in the future to further undertake foreign exchange hedging transactions. As a result of the Zenium acquisition, our increased presence in Europe and the U.K. and our €500.0 million aggregate principal amount of 1.450% Senior Notes due 2027, our exposure to foreign currency has increased. We could mitigate future investment and operational foreign currency exposure by borrowing under our $3.0 Billion Credit Facility in the particular foreign currency, subject to availability and applicable borrowing conditions. However, we would expect to incur foreign currency transaction gains and losses, which would impact our consolidated net income, and translation of financial statements from the foreign functional currency to U.S. dollars, which would be included in other comprehensive income or loss and stockholders’ equity. In addition, we have entered into cross-currency swaps to synthetically convert certain USD outstanding debt amounts to the EUR equivalent, which has further increased our exposure to foreign currency exchange rates. We have exposure to other foreign currencies, such as British pound sterling, but we have not hedged against those currencies. As a result, any changes in the strength of the U.S. dollar relative to the Euro or the other currencies of the foreign countries in which we operate may have an impact on our consolidated results of operations, including but not limited to the fact that the fair value of our cross-currency swap liabilities may increase and we may incur losses that would be immediately recognized in earnings since those hedges are not designated. See "Quantitative and Qualitative Disclosures About Market Risk" for a further discussion of our interest rate and foreign currency risks.

Discontinuation, reform or replacement of the London Interbank Offered Rate (“LIBOR”) and other benchmark rates, or uncertainty related to the potential for any of the foregoing, may adversely affect our business.

Certain of our variable rate debt, including our $3.0 Billion Credit Facility, uses the LIBOR as a benchmark for establishing the interest rate. See Note 12, Debt, to our audited consolidated financial statements. The U.K. Financial Conduct Authority announced in 2017 that it intends to phase out LIBOR by the end of 2021. In addition, other regulators have suggested reforming or replacing other benchmark rates. Discontinuation, reform or replacement of LIBOR or any other benchmark rates may have an unpredictable impact on contractual mechanics in the credit markets or cause disruption to the broader financial markets. Uncertainty as to the nature of such potential discontinuation, reform or replacement may negatively impact the cost of our variable rate debt.

When the supervisor for the administrator of LIBOR or a governmental authority having jurisdiction over the administrative agent has identified a specific date after which LIBOR shall no longer be used for determining interest rates for loans (the “LIBOR end date”), our credit facility contemplates a transition mechanism by which we, together with our administrative agent, shall endeavor

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to establish an alternate rate of interest in respect of the affected currency that gives due consideration to the then prevailing market convention for determining a rate of interest for syndicated loans in such currency in the United States at such time and shall enter into an amendment to our credit agreement to reflect such alternate rate of interest and such other related changes as may be applicable. If the affected currency is United States dollars (our term loans and United States dollar revolver), any such amendment becomes effective without further action or consent of any other party to our credit agreement unless the administrative agent has received within a specified time written notice of an objection from the majority facility lenders. If the affected currency is any other currency (our Great Britain pound revolver), the alternate rate of interest is not effective until consented to by the required lenders. Although no LIBOR end date has been identified as of February 20, 2020, we may not be able to reach agreement with our lenders on any such amendments once it is. As a result, additional financing to replace our LIBOR-based debt may be unavailable, more expensive or restricted by the terms of our outstanding indebtedness.

The agreements governing our indebtedness place significant operational and financial restrictions on us and our subsidiaries, reducing our operational flexibility and creating default risks.

The agreements governing our indebtedness contain covenants, and the terms of any future agreements may contain covenants, that place restrictions on us and our subsidiaries. These covenants restrict, among other things, our and our subsidiaries’ ability to:

• merge, consolidate or transfer all, or substantially all, of our or our subsidiaries’ assets;

• incur or guarantee additional debt or issue preferred stock;

• make certain investments or acquisitions;

• create liens on our or our subsidiaries’ assets;

• sell assets;

• make capital expenditures;

• incur restrictions on the payment of dividends or other distributions from our restricted subsidiaries;

• make distributions on or repurchase our stock;

• enter into transactions with affiliates;

• issue or sell stock of our subsidiaries; and

• change the nature of our business.

These covenants could impair our ability to grow our business, take advantage of attractive business opportunities or successfully compete. These covenants could also impair our ability to plan for or react to market conditions or meet capital needs, or our ability to finance our operations, strategic acquisitions, investments or alliances or other capital needs or to engage in other business activities that would be in our interest. In addition, the indentures governing our 2024 Notes and 2029 Notes and our $3.0 Billion Credit Facility require us to maintain specified financial ratios and satisfy financial condition tests. The indentures governing our 2024 Notes and 2029 Notes also require our operating partnership and its subsidiaries to maintain total unencumbered assets of at least 150% of the aggregate principal amount of their outstanding unsecured debt on a consolidated basis. Our ability to comply with these metrics or tests may be affected by events beyond our control, including prevailing economic, financial and industry conditions. A breach of any of these covenants or covenants under any other agreements governing our indebtedness could result in an event of default. Cross-default provisions in our debt agreements could cause an event of default under one debt agreement to trigger an event of default under our other debt agreements. Upon the occurrence of an event of default under any of our debt agreements, the lenders or holders thereof could elect to declare all outstanding debt under such agreements to be immediately due and payable. If we were unable to repay or refinance the accelerated debt, the lenders or holders, as applicable, could proceed against any assets pledged to secure that debt, including foreclosing on or requiring the sale of our data centers, and our assets may not be sufficient to repay such debt in full.

We have been and may become subject to litigation or threatened litigation which may divert management time and attention, require us to pay damages and expenses or may restrict the operation of our business or interfere with existing agreements or permits.

We have been and may become subject to disputes with commercial and other parties with whom we maintain relationships or other parties with whom we do business, including as a result of any breach in our security systems or downtime in our critical electrical and cooling systems. Any such dispute could result in litigation between us and the other parties. Whether or not any dispute actually proceeds to litigation, we may be required to devote significant management time and attention to its resolution (through litigation, settlement or otherwise), which would detract from our management’s ability to focus on our business. Any such resolution could involve the payment of damages or expenses by us, which may be significant, and could involve our agreement with terms that restrict the operation of our business.

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We could incur significant costs related to environmental matters.

We are subject to laws and regulations relating to the protection of the environment, including those governing the management and disposal of hazardous materials, the cleanup of contaminated sites and health and safety matters. We could incur significant costs, including fines, penalties and other sanctions, cleanup costs and third-party claims for property damages or personal injuries, as a result of violations of or liabilities under environmental laws and regulations. Some environmental laws impose liability on current owners or operators of property regardless of fault or the lawfulness of past disposal activities. For example, many of our sites contain above ground fuel storage tanks and, in some cases, currently contain or formerly contained underground fuel storage tanks, for back-up generator use. Some of our sites also have a history of previous commercial operations. We also may acquire or develop sites in the future with unknown environmental conditions from historical operations. Although we are not aware of any sites at which we currently have material remedial obligations, the imposition of remedial obligations as a result of spills or the discovery of contaminants in the future could result in significant additional costs. We also could incur significant costs complying with current environmental laws or regulations or those that are promulgated in the future.

We may incur significant costs complying with the Americans with Disabilities Act, or ADA, and similar laws, which could materially adversely affect our financial condition and operating results.

Under the ADA, all places of public accommodation must meet federal requirements related to access and use by disabled persons. We have not conducted an audit or investigation of all of our U.S. properties to determine our compliance with the ADA. If one of our U.S. properties is not in compliance with the ADA, we would be required to incur additional costs to bring the property into compliance. Additional federal, state and local laws may require modifications to our properties, or restrict our ability to renovate our properties. We cannot predict the ultimate amount of the cost of compliance with the ADA or other legislation. If we incur substantial costs to comply with the ADA and any other similar legislation, our financial condition and results of operations could be materially adversely affected.

We may be adversely affected by regulations or standards related to climate change.

If we, or other companies with which we do business, become subject to existing or future laws and regulations or standards related to climate change, our business could be impacted adversely. For example, in the normal course of business, we enter into agreements with providers of electric power for our data centers, and the costs of electric power comprise a significant component of our operating expenses. In addition, we may be required to incur additional costs to acquire or upgrade our back-up generators to obtain or continue to qualify for applicable permits. Changes in regulations that affect electric power providers, such as regulations related to the control of greenhouse gas emissions, wildfire mitigation plans or other climate change related matters, could adversely affect the costs of electric power and increase our operating costs and may adversely affect our business, financial condition and results of operations or those of our customers.

We may incur significant costs complying with other regulations.

Our properties are subject to various federal, state and local regulations, such as state and local fire and life safety regulations, as well as similar foreign regulations. For instance, as discussed in “We may be vulnerable to security breaches or cyber-attacks which could disrupt our operations and have a material adverse effect on our financial performance and operating results” above, new regulations such as the GDPR may have significant impact on our operations. If we fail to comply with these various regulations, we may be required to pay fines or private damage awards. We do not know whether existing regulations will change or whether future regulations will require us to make significant unanticipated expenditures that may adversely affect our business, financial condition and results of operations. With respect to foreign regulations, we also face the risks described above in “We face risks with our international acquisitions associated with investing in unfamiliar metropolitan areas”.

We may be subject to unknown or contingent liabilities related to properties or businesses that we acquire for which we may have limited or no recourse against the sellers.

Assets and entities that we have acquired or may acquire in the future, including the properties contributed to us by Cincinnati Bell Inc. (CBI), our former parent, may be subject to unknown or contingent liabilities for which we may have limited or no recourse against the sellers. Unknown or contingent liabilities might include liabilities for clean-up or remediation of environmental conditions, claims of customers, vendors or other persons dealing with the acquired entities, tax liabilities and other liabilities whether incurred in the ordinary course of business or otherwise. In the future, we may enter into transactions with limited representations and warranties or with representations and warranties that do not survive the closing of the transactions, in which event we would have no or limited recourse against the sellers of such properties. While we usually require the sellers to indemnify us and they obtain representation and warranty insurance, with respect to breaches of representations and warranties that survive the closing, such indemnification, if obtained, is often limited and subject to various materiality thresholds, a significant deductible, an aggregate cap on losses or a survival period.

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As a result, there is no guarantee that we will recover any amounts with respect to losses due to breaches by the sellers of their representations and warranties. In addition, the total amount of costs and expenses that we may incur with respect to liabilities associated with acquired properties and entities may exceed our expectations, which may adversely affect our business, financial condition and results of operations. Finally, indemnification agreements between us and the sellers typically provide that the sellers will retain certain specified liabilities relating to the assets and entities acquired by us. While the sellers are generally contractually obligated to pay all losses and other expenses relating to such retained liabilities, there can be no guarantee that such arrangements will not require us to incur losses or other expenses as well.

The failure to successfully implement changes to our information technology system could adversely affect our business.

From time to time, we make changes to our information technology system to meet our business and financial reporting needs. Transitioning to new or upgraded systems can create difficulties, including potential disruption to our financial reporting data, security vulnerabilities and decreases in productivity until personnel become familiar with new systems. In addition, our management information systems will require modification and refinement as we grow and as our business needs change, which could prolong difficulties we experience with systems transitions, and we may not always employ the most effective systems for our purposes. If we experience difficulties in implementing new or upgraded information systems or experience significant system failures, or if we are unable to successfully modify our management information systems and respond to changes in our business needs, our operating results could be harmed or we may fail to meet our reporting obligations.

We face significant competition and may be unable to lease vacant space, renew existing leases or re-lease space as leases expire, which may adversely affect our business, financial condition and results of operations.

We compete with numerous developers, owners and operators of technology-related real estate and data centers, many of which own properties similar to ours in the same markets, as well as various other public and privately held companies that may provide data center colocation as part of a more expansive managed services offering, and local developers. In addition, we may face competition from new entrants into the data center market. Some of our competitors may have significant advantages over us, including greater name recognition, longer operating histories, lower operating costs, pre-existing relationships with current or potential customers, greater financial, marketing and other resources, access to less expensive power and access to attractive land for development. These advantages could allow our competitors to respond more quickly to strategic opportunities or changes in our industries or markets. If our competitors offer data center space that our existing or potential customers perceive to be superior to ours based on numerous factors, including power, security considerations, location or network connectivity, or if they offer rental rates below our or current market rates, we may lose existing or potential customers, incur costs to improve our properties or be forced to reduce our rental rates.

Some of our competitors may adopt aggressive pricing policies, especially if they are not highly leveraged or have lower return thresholds than we do. As a result, we may suffer from pricing pressure that would adversely affect our ability to generate revenues. Some of these competitors may also provide our target customers with additional benefits, including bundled communication services or cloud services, and may do so in a manner that is more attractive to our potential customers than obtaining space in our data centers. Competitors could also operate more successfully or form alliances to acquire significant market share.

Finally, as our customers evolve their IT strategies, we must remain flexible and evolve along with industry and market shifts. Ineffective planning and execution in our cloud strategy and product development lifecycle may cause difficulty in sustaining competitive advantage in our products and services.

Joint venture investments could be adversely affected by our lack of sole decision-making authority, our reliance on co-venturers’ financial condition and disputes between us and our co-venturers.

We have and may in the future co-invest with third parties through partnerships, joint ventures or other entities, acquiring non-controlling interests in or sharing responsibility for managing the affairs of a property, partnership, joint venture or other entity. In these events, we are not or would not be in a position to exercise sole decision-making authority regarding the property, partnership, joint venture or other entity. Investments in partnerships, joint ventures, or other entities may, under certain circumstances, involve risks not present when a third party is not involved, including the possibility that partners or co-venturers might become bankrupt or fail to fund their share of required capital contributions. Partners or co-venturers may have economic, tax or other business interests or goals which are inconsistent with our business interests or goals, and may be in a position to take actions contrary to our policies or objectives. Our current and future joint venture partners may take actions that are not within our control, which could require us to dispose of the joint venture asset or transfer it to a taxable REIT subsidiary in order for CyrusOne Inc. to maintain its status as a REIT. Such investments may also lead to impasses, for example, as to whether to sell a property, because neither we nor the partner or co-venturer would have full control over the partnership or joint venture. Disputes between us and partners or co-venturers may result in litigation or arbitration that would increase our expenses and prevent our officers and/or directors from focusing their time and effort on our day-to-day business. Consequently, actions by or disputes with

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partners or co-venturers may subject properties owned by the partnership or joint venture to additional risk. In addition, we may in certain circumstances be liable for the actions of third-party partners or co-venturers. Each of these factors may result in returns on these investments being less than we expect or in losses and our financial and operating results may be adversely affected.

The loss of any of our key personnel, including our executive officers or key sales associates, could adversely affect our business, financial condition and results of operations.

Our success will continue to depend to a significant extent on our executive officers and key sales associates. Each of our executive officers has a national or regional industry reputation that attracts business and investment opportunities and assists us in negotiations with lenders, existing and potential customers and industry personnel. The loss of key sales associates could hinder our ability to continue to benefit from existing and potential customers. We cannot provide any assurance that we will be able to retain our current executive officers or key sales associates. The loss of any of these individuals could adversely affect our business, financial condition and results of operations.

Our data center infrastructure may become obsolete, and we may not be able to upgrade our power and cooling systems cost-effectively, or at all.

The markets for the data centers we own and operate, as well as the industries in which our customers operate, are characterized by rapidly changing technology, evolving industry standards, frequent new service introductions, shifting distribution channels and changing customer demands. Our data center infrastructure may become obsolete due to the development of new systems to deliver power to or eliminate heat from the servers that we house. Additionally, our data center infrastructure could become obsolete as a result of the development of new server technology that does not require the levels of critical load and heat removal that our facilities are designed to provide and could be run less expensively on a different platform. In addition, our power and cooling systems are difficult and expensive to upgrade. Accordingly, we may not be able to efficiently upgrade or change these systems to meet new demands, including noise mitigation upgrades, without incurring significant costs that we may not be able to pass on to our customers. The obsolescence of our power and cooling systems could have a material negative impact on our business, financial condition and results of operations. Furthermore, potential future regulations that apply to industries we serve may require customers in those industries to seek specific requirements from their data centers that we are unable to provide. These may include physical security requirements applicable to the defense industry and government contractors and privacy and security regulations applicable to the financial services and health care industries. If such regulations were adopted, we could lose some customers or be unable to attract new customers in certain industries, which would have a material adverse effect on our results of operations.

Declining real estate valuations and impairment charges could adversely affect our earnings and financial condition.

We review the carrying value of each of our properties when events or changes in circumstances indicate that the carrying amount of the property may not be recoverable. Examples of such indicators may include a significant decrease in market price, a significant adverse change in the extent to or manner in which the property is being used or in its physical condition, an accumulation of costs significantly in excess of the amount originally expected for the acquisition or development, or a history of operating or cash flow losses. When such impairment indicators exist, we review an estimate of the future undiscounted net cash flows (excluding interest charges) expected to result from the real estate investment’s use and eventual disposition and compare it to the carrying value of the property. We consider factors such as future operating income, trends and prospects, as well as the effects of leasing demand, competition and other factors. If our future undiscounted net cash flow evaluation indicates that we are unable to recover the carrying value of a real estate investment, an impairment loss is recorded to the extent that the carrying value exceeds the estimated fair value of the property. For the year ended December 31, 2019, we recorded an impairment charge of $0.7 million related primarily to an impairment on the South Bend - Monroe facility, which is being actively marketed for sale. For the year ended December 31, 2017, we recorded an impairment of $58.0 million related primarily to two properties. These losses had a direct impact on our net income because recording an impairment loss results in an immediate negative adjustment to net income. The evaluation of anticipated cash flows is highly subjective and is based in part on assumptions regarding future occupancy, rental rates and capital requirements that could differ materially from actual results in future periods. A worsening real estate market may cause us to re-evaluate the assumptions used in our impairment analysis. Impairment charges could adversely affect our business, financial condition and results of operations.

Our contracts with our customers may adversely affect our earnings and financial condition.

In the ordinary course of business, we enter into agreements with our customers pursuant to which our customers lease or otherwise contract for the use of data center space from us. These contracts typically contain indemnification and liability provisions, in addition to service level commitments, which could potentially impose a significant cost on us in the event of losses arising out of certain breaches of such agreements, services to be provided by us or our subcontractors or from third-party claims. Customers increasingly are looking to pass through their regulatory obligations and other liabilities to their outsourced data center providers and we may not be able to limit our liability or damages in an event of loss suffered by such customers whether as a result of our breach of agreement or otherwise. Further, liabilities and standards for damages and enforcement actions, including the regulatory

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framework applicable to different types of losses, vary by jurisdiction, and we may be subject to greater liability for certain losses in certain jurisdictions. Additionally, in connection with our acquisitions, including the Zenium acquisition, we have assumed and expect to assume existing agreements with customers that may subject us to greater liability for such an event of loss. If such an event of loss occurred, we could be liable for material monetary damages and could incur significant legal fees in defending against such an action, which could adversely affect our financial condition and results of operations.

Any failure of the National IX Platform could lead to significant costs and disruptions that could reduce our revenue and harm our business reputation and financial results.

As described in Part I, Item 1 "Business", we have deployed the National IX Platform throughout several of our properties, and expect that we will further deploy it throughout our portfolio to meet customer demand. The National IX Platform allows our customers to connect to third-party carriers and other customers. We may be required to incur substantial additional costs to operate and expand the National IX Platform. The National IX Platform is subject to failure resulting from numerous factors, including but not limited to:

•human error;

•equipment failure;

•physical, electronic, and cyber-security breaches;

•fire, earthquake, hurricane, flood, tornado and other natural disasters in our facilities;

•failure to properly connect to third-party carriers or other customers;

•fiber cuts;

•power loss;

•terrorist acts;

•sabotage and vandalism; and

• failure of business partners who provide components of the National IX Platform or third-party connectivity from the National IX Platform.

Problems with the National IX Platform, whether or not within our control, could result in service interruptions or significant equipment damage. We have service level commitment obligations to certain of our customers, including our significant customers. As a result, service interruptions in the National IX Platform could result in difficulty maintaining service level commitments to these customers and in potential claims related to such failures. In addition, any loss of service, equipment damage or inability to meet our service level commitment obligations could reduce the confidence of our customers and could consequently impair our ability to obtain and retain customers, which would adversely affect both our ability to generate revenues and our operating results.

Violations of our prohibition on harassment, sexual or otherwise, could result in liabilities and/or litigation.

We prohibit harassment or discrimination in the workplace, whether sexual harassment or any other form. This policy applies to all aspects of employment. Notwithstanding our conducting training and taking disciplinary action against alleged violations, we may encounter additional costs from claims made and/or legal proceedings brought against us. Any such claims or allegations, or even just stories or rumors about such misconduct at the Company, could also harm our reputation and therefore our business, including our ability to recruit future employees or secure contracts with new and existing customers, even if such allegations do not result in any legal liability or direct financial losses.

The expansion of social media platforms presents new risks and challenges.

The inappropriate use of certain social media vehicles could cause brand damage or information leakage or could lead to legal implications from the improper collection and/or dissemination of personally identifiable information or the improper dissemination of material non-public information. In addition, negative posts or comments about us on any social networking web site could seriously damage our reputation. Further, the disclosure of non-public company sensitive information through external media channels could lead to information loss as there might not be structured processes in place to secure and protect information. If our non-public sensitive information is disclosed or if our reputation is seriously damaged through social media, it could have a material adverse effect on our business, financial condition, results of operations, cash flows, and/or ordinary share price.

Risks Related to the Real Estate Industry

Our performance and value are subject to risks associated with real estate assets and with the real estate industry.

Our ability to make expected distributions to our stockholders depends on our ability to generate revenues in excess of expenses, scheduled principal payments on debt and capital expenditure requirements. Events and conditions generally applicable to owners and operators of real property that are beyond our control may decrease cash available for distribution to our stockholders and the value of our properties. These events and conditions include:

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•local oversupply, increased competition or reduction in demand for technology-related space;

•inability to collect rent from customers;

•vacancies or our inability to lease space on favorable terms;

•inability to finance property development and acquisitions on favorable terms;

•increased operating costs to the extent not paid for by our customers;

•costs of complying with changes in governmental regulations;

• the relative illiquidity of real estate investments, especially the specialized real estate properties that we hold and seek to acquire and develop; and

•changing market demographics.

Illiquidity of real estate investments, particularly our data centers, could significantly impede our ability to respond to adverse changes in the performance of our properties, which could harm our financial condition.

Because real estate investments are relatively illiquid, our ability to promptly sell one or more properties in our portfolio in response to adverse changes in the real estate market or in the performance of such properties may be limited, thus harming our financial condition. The real estate market is affected by many factors that are beyond our control, including:

• adverse changes in national and local economic and market conditions;

• changes in interest rates and in the availability, cost and terms of debt financing;

• changes in governmental laws and regulations, fiscal policies and zoning ordinances and costs of compliance therewith;

• the ongoing cost of capital improvements that are not passed on to our customers, particularly in older structures;

• changes in operating expenses; and

• civil unrest, acts of war, terrorism and natural disasters, including fires, earthquakes, tropical storms, hurricanes, and floods, which may result in uninsured and underinsured losses.

In addition, as described above in “Our properties are not suitable for use other than as data centers, which could make it difficult to sell or reposition them if we are not able to lease available space”, the risks associated with the illiquidity of real estate investments are even greater for our data center properties. Further, we operate a branded platform-based business that would not easily be separated on an asset by asset basis.

Risks Related to Our Organizational Structure

Our rights and the rights of our stockholders to take action against our directors and officers are limited.

Maryland law provides that a director has no liability in the capacity as a director if he or she performs his or her duties in good faith, in a manner he or she reasonably believes to be in the company’s best interests and with the care that an ordinarily prudent person in a like position would use under similar circumstances. As permitted by the Maryland General Corporation Law (MGCL), our charter limits the liability of our directors and officers to the company and our stockholders for money damages, except for liability resulting from:

•actual receipt of an improper benefit or profit in money, property or services; or

• a final judgment based upon a finding of active and deliberate dishonesty by the director or officer that was material to the cause of action adjudicated.

In addition, our charter authorizes us to obligate the company, and our bylaws require us, to indemnify our directors and officers for actions taken by them in those capacities and to pay or reimburse their reasonable expenses in advance of final disposition of a proceeding to the maximum extent permitted by Maryland law, and we have entered into indemnification agreements with our directors and executive officers. As a result, we and our stockholders may have more limited rights against our directors and officers than might otherwise exist under common law. Accordingly, in the event that any of our directors or officers are exculpated from, or indemnified against, liability but whose actions impede our performance, our stockholders’ ability to recover damages from that director or officer will be limited.

Conflicts of interest exist or could arise in the future with our operating partnership or its partners.

Conflicts of interest exist or could arise in the future as a result of the relationships between us and our affiliates, on the one hand, and our operating partnership or any partner thereof, on the other. Our directors and officers have duties to our company under applicable Maryland law in connection with their direction of the management of our company. At the same time, we, as trustee, have duties to CyrusOne GP, which, in turn, as general partner of our operating partnership, has duties to our operating partnership and to the limited partners under Maryland law in connection with the management of our operating partnership. Under Maryland law, the general partner of a Maryland limited partnership has fiduciary duties of care and loyalty, and an obligation of good faith, to the partnership and its partners. While these duties and obligations cannot be eliminated entirely in the limited partnership

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agreement, Maryland law permits the parties to a limited partnership agreement to specify certain types or categories of activities that do not violate the general partner’s duty of loyalty and to modify the duty of care and obligation of good faith, so long as such modifications are not unreasonable. These duties as general partner of our operating partnership to the partnership and its partners may come into conflict with the interests of our company. Under the partnership agreement of our operating partnership, the limited partners of our operating partnership expressly agree that the general partner of our operating partnership is acting for the benefit of the operating partnership, the limited partners of our operating partnership and our stockholders, collectively. The general partner is under no obligation to give priority to the separate interests of the limited partners in deciding whether to cause our operating partnership to take or decline to take any actions. If there is a conflict between the interests of us or our stockholders, on the one hand, and the interests of the limited partners of our operating partnership, on the other, the partnership agreement of our operating partnership provides that any action or failure to act by the general partner that gives priority to the separate interests of us or our stockholders that does not result in a violation of the contractual rights of the limited partners of our operating partnership under the partnership agreement will not violate the duties that the general partner owes to our operating partnership and its partners.

Additionally, the partnership agreement of our operating partnership expressly limits our liability by providing that we and our directors, officers, agents and employees will not be liable or accountable to our operating partnership or its partners for money damages. In addition, our operating partnership is required to indemnify us, our directors, officers and employees, the general partner and its trustees, officers and employees, employees of our operating partnership and any other persons whom the general partner may designate from and against any and all claims arising from operations of our operating partnership in which any indemnitee may be involved, or is threatened to be involved, as a party or otherwise unless it is established by a final judgment that the act or omission of the indemnitee constituted fraud, intentional harm or gross negligence on the part of the indemnitee, the claim is brought by the indemnitee (other than to enforce the indemnitee’s rights to indemnification or advance of expenses) or the indemnitee is found to be liable to our operating partnership, and then only with respect to each such claim.

No reported decision of a Maryland appellate court has interpreted provisions that are similar to the provisions of the partnership agreement of our operating partnership that modify the fiduciary duties of the general partner of our operating partnership, and we have not obtained an opinion of counsel regarding the enforceability of the provisions of the partnership agreement that purport to waive or modify the fiduciary duties and obligations of the general partner of our operating partnership.

Our charter and bylaws and the partnership agreement of our operating partnership contain provisions that may delay, defer or prevent an acquisition of our common stock or a change in control.

Our charter and bylaws and the partnership agreement contain a number of provisions, the exercise or existence of which could delay, defer or prevent a transaction or a change in control that might involve a premium price for our stockholders or otherwise be in their best interests, including the following:

• Our Charter Contains Restrictions on the Ownership and Transfer of Our Stock. In order for us to qualify as a REIT, no more than 50% of the value of outstanding shares of our stock may be owned, beneficially or constructively, by five or fewer individuals at any time during the last half of each taxable year other than the first year for which we elect to be taxed as a REIT. Subject to certain exceptions, our charter prohibits any stockholder from owning beneficially or constructively more than 9.8% in value or in number of shares, whichever is more restrictive, of the outstanding shares of our common stock, or 9.8% in value of the aggregate of the outstanding shares of all classes or series of our stock. We refer to these restrictions collectively as the “ownership limits.” The constructive ownership rules under the Code are complex and may cause the outstanding stock owned by a group of related individuals or entities to be deemed to be constructively owned by one individual or entity. As a result, the acquisition of less than 9.8% of our outstanding common stock or the outstanding shares of all classes or series of our stock by an individual or entity could cause that individual or entity or another individual or entity to own constructively in excess of the relevant ownership limits. Our charter also prohibits any person from owning shares of our stock that would result in our being “closely held” under Section 856(h) of the Code or otherwise cause us to fail to qualify as a REIT. Any attempt to own or transfer shares of our common stock or of any of our other capital stock in violation of these restrictions may result in the shares being automatically transferred to a charitable trust or may be void. These ownership limits may prevent a third-party from acquiring control of us if our board of directors does not grant an exemption from the ownership limits, even if our stockholders believe the change in control is in their best interests. Although it is under no continuing obligation to do so, our board of directors has granted some limited exemptions from the ownership limits applicable to certain holders of our common stock, subject to certain initial and ongoing conditions designed to protect our status as a REIT, including, if deemed advisable, the receipt of an Internal Revenue Service (IRS) private letter ruling or an opinion of counsel.

• Our Board of Directors Has the Power to Cause Us to Issue Additional Shares of Our Stock Without Stockholder Approval. Our charter authorizes us to issue additional authorized but unissued shares of common or preferred stock. In addition, our board of directors may, without stockholder approval, amend our charter to increase the aggregate number of our shares of common stock or the number of shares of stock of any class or series that we have authority to issue and

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classify or reclassify any unissued shares of common or preferred stock and set the preferences, rights and other terms of the classified or reclassified shares. As a result, our board of directors may establish a series of shares of common or preferred stock that could delay or prevent a transaction or a change in control that might involve a premium price for our shares of common stock or otherwise be in the best interests of our stockholders.

Certain provisions of Maryland law may limit the ability of a third-party to acquire control of us.

Certain provisions of the MGCL may have the effect of inhibiting a third-party from acquiring us or of impeding a change of control under circumstances that otherwise could provide our common stockholders with the opportunity to realize a premium over the then-prevailing market price of such shares, including:

• “business combination” provisions that, subject to limitations, prohibit certain business combinations between an “interested stockholder” (defined generally as any person who beneficially owns 10% or more of the voting power of our outstanding shares of voting stock or an affiliate or associate of the corporation who, at any time within the two-year period immediately prior to the date in question, was the beneficial owner of 10% or more of the voting power of the then outstanding stock of the corporation) or an affiliate of any interested stockholder and us for five years after the most recent date on which the stockholder becomes an interested stockholder, and thereafter imposes two super-majority stockholder voting requirements on these combinations; and

• “control share” provisions that provide that holders of “control shares” of our company (defined as voting shares of stock that, if aggregated with all other shares of stock owned or controlled by the acquirer, would entitle the acquirer to exercise one of three increasing ranges of voting power in electing directors) acquired in a “control share acquisition” (defined as the direct or indirect acquisition of issued and outstanding “control shares”) have no voting rights except to the extent approved by our stockholders by the affirmative vote of at least two-thirds of all of the votes entitled to be cast on the matter, excluding all interested shares.

Pursuant to the Maryland Business Combination Act, our board of directors has by resolution exempted from the provisions of the Maryland Business Combination Act business combinations between any other person and us, provided that such business combination is first approved by our board of directors (including a majority of our directors who are not affiliates or associates of such person). Our bylaws contain a provision exempting from the Maryland Control Share Acquisition Act any and all acquisitions by any person of shares of our stock. There can be no assurance that these exemptions or resolutions will not be amended or eliminated at any time in the future.

Additionally, Title 3, Subtitle 8 of the MGCL permits our board of directors, without stockholder approval and regardless of what is currently provided in our charter or bylaws, to implement certain takeover defenses, such as a classified board, some of which we do not have.

Our bylaws designate the Circuit Court for Baltimore City, Maryland, as the sole and exclusive forum for certain types of actions and proceedings that may be initiated by our stockholders, which could limit our stockholders’ ability to bring a claim in a judicial forum that the stockholders believe is a more favorable judicial forum for disputes with us or our directors, officers or other employees.

Our bylaws provide that, subject to limited exceptions, the Circuit Court for Baltimore City, Maryland, is the sole and exclusive

forum for (a) any derivative action or proceeding brought on our behalf, (b) any action asserting a claim of breach of any duty owed by any of our directors, officers or other employees to us or our stockholders, (c) any action asserting a claim against us or any of our directors, officers or other employees arising pursuant to any provision of the MGCL, our charter or our bylaws or (d) any action asserting a claim against us or any of our directors, officers or other employees that is governed by the internal affairs doctrine. This provision may limit a stockholder’s ability to bring a claim in a judicial forum that it believes is more favorable for disputes against us or our directors, officers or employees, which may discourage such lawsuits against us and our directors, officers and other employees.

Risks Related to Status as a REIT

If we fail to remain qualified as a REIT, we will be subject to U.S. federal income tax as a regular corporation and could face a substantial tax liability, which would reduce the amount of cash available for distribution to our stockholders.

CyrusOne Inc. has elected to be taxed as a REIT under the Code commencing with our initial taxable year ending December 31, 2013. We intend to continue to operate in a manner that will allow us to remain qualified as a REIT. Our qualification as a REIT depends on our satisfaction of certain asset, income, organizational, distribution, stockholder ownership and other requirements on a continuing basis. Our ability to satisfy the asset tests depends upon our analysis of the characterization and fair market values of our assets, some of which are not susceptible to a precise determination, and for which we do not obtain independent appraisals.

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We have received a private letter ruling from the IRS with respect to certain issues relevant to our qualification as a REIT. In general, the ruling provides, subject to the terms and conditions contained therein, that certain structural components of our properties (e.g., relating to the provision of electricity, heating, ventilation and air conditioning, regulation of humidity, security and fire protection, and telecommunications services) and intangible assets, and certain services that we may provide, directly or through subsidiaries, to our tenants, will not adversely affect our qualification as a REIT. Although we may generally rely upon the ruling, no assurance can be given that the IRS will not challenge our qualification as a REIT on the basis of other issues or facts outside the scope of the ruling.

If we were to fail to qualify as a REIT in any taxable year, we would be subject to U.S. federal income tax, and could be subject to U.S. Federal income tax for any open taxable years beginning prior to January 1, 2020 including any applicable alternative minimum tax, on our taxable income at regular corporate rates, and dividends paid to our stockholders would not be deductible by us in computing our taxable income. Any resulting corporate tax liability could be substantial and would reduce the amount of cash available for distribution to our stockholders, which in turn could have an adverse impact on the value of our common stock. Unless we were entitled to relief under certain Code provisions, we would also be disqualified from re-electing to be taxed as a REIT for the four taxable years following the year in which we failed to qualify as a REIT.

Qualifying as a REIT involves highly technical and complex provisions of the Code.

Qualification as a REIT involves the application of highly technical and complex Code provisions for which only limited judicial and administrative authorities exist. Even a technical or inadvertent violation could jeopardize our REIT qualification. Our continued qualification as a REIT will depend on our satisfaction of certain asset, income, organizational, distribution, stockholder ownership and other requirements on a continuing basis. In addition, our ability to satisfy the requirements to qualify as a REIT may depend in part on the actions of third parties over which we have no control or only limited influence, including in cases where we own an equity interest in an entity that is classified as a partnership for U.S. federal income tax purposes.

Dividends payable by REITs generally do not qualify for the reduced tax rates available for some dividends, but certain stockholders may be entitled to deduct up to 20% of dividends payable by REITs.

"Qualified dividend income" payable to U.S. stockholders that are individuals, trusts or estates is generally subject to tax at preferential rates, but dividends payable by REITs generally do not constitute “qualified dividend income”. For taxable years beginning after December 31, 2017 and before January 1, 2026, however, U.S. stockholders that are individuals, trusts or estates generally will be entitled to deduct up to 20% of “qualified REIT dividends”. A “qualified REIT dividend” is any dividend from a REIT received during the taxable year that is not designated by the REIT as a “capital gain dividend” or as “qualified dividend income”.

REIT distribution requirements could adversely affect our ability to execute our business plan.

We generally must distribute annually at least 90% of our REIT taxable income, determined without regard to the dividends paid deduction and excluding any net capital gains, in order for us to qualify as a REIT (assuming that certain other requirements are also satisfied) so that U.S. federal corporate income tax does not apply to earnings that we distribute. To the extent that we satisfy this distribution requirement and qualify for taxation as a REIT but distribute less than 100% of our REIT taxable income, determined without regard to the dividends paid deduction and including any net capital gains, we will be subject to U.S. federal corporate income tax on our undistributed net taxable income and on income recognized by our TRSs. In addition, we will be subject to a 4% nondeductible excise tax if the actual amount that we distribute to our stockholders in a calendar year is less than a minimum amount specified under U.S. federal tax laws. We intend to make distributions to our stockholders to comply with the REIT requirements of the Code.

From time to time, we may generate taxable income greater than our cash flow as a result of differences in timing between the recognition of taxable income and the actual receipt of cash or the effect of nondeductible capital expenditures, the creation of reserves or required debt or amortization payments. If we do not have other funds available in these situations, we could be required to borrow funds on unfavorable terms, sell assets at disadvantageous prices or distribute amounts that would otherwise be invested in future acquisitions to make distributions sufficient to enable us to pay out enough of our taxable income to satisfy the REIT distribution requirement and to avoid corporate income tax and the 4% excise tax in a particular year. These alternatives could increase our costs or reduce our equity. Thus, compliance with the REIT requirements may hinder our ability to grow, which could adversely affect the value of our common stock.

Even if we remain qualified as a REIT, we may face other tax liabilities that reduce our cash flow.

Even if we remain qualified for taxation as a REIT, we may be subject to certain U.S. federal, state and local taxes on our income and assets, including taxes on any undistributed net taxable income and state or local income, property and transfer taxes. For example, in order to meet the REIT qualification requirements, we may hold some of our assets or conduct certain of our activities

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through one or more TRS or other subsidiary corporations that will be subject to federal, state, and local corporate-level income taxes as regular C corporations. In addition, we may incur a 100% excise tax on transactions with a TRS if they are not conducted on an arm’s length basis. Any of these taxes would decrease cash available for distribution to our stockholders.

Complying with REIT requirements may cause us to forgo otherwise attractive opportunities.

To qualify as a REIT, we must ensure that, at the end of each calendar quarter, at least 75% of the value of our assets consists of cash, cash items, government securities and “real estate assets” (as defined in the Code), including certain mortgage loans and securities. The remainder of our investments (other than government securities, qualified real estate assets and securities issued by a TRS) generally cannot include more than 10% of the outstanding voting securities of any one issuer or more than 10% of the total value of the outstanding securities of any one issuer. In addition, in general, no more than 5% of the value of our total assets (other than government securities, qualified real estate assets and securities issued by a TRS) can consist of the securities of any one issuer, and no more than 20% of the value of our total assets can be represented by securities of one or more TRS. If we fail to comply with these requirements at the end of any calendar quarter, we must correct the failure within 30 days after the end of the calendar quarter or qualify for certain statutory relief provisions to avoid losing our REIT qualification and suffering adverse tax consequences. As a result, we may be required to liquidate or forgo otherwise attractive investments. These actions could have the effect of reducing our income and amounts available for distribution to our stockholders.

In addition to the asset tests set forth above, to continue to qualify as a REIT we must continually satisfy tests concerning, among other things, the sources of our income, the amounts we distribute to our stockholders and the ownership of our stock. We may be unable to pursue investments that would be otherwise advantageous to us in order to satisfy the source-of-income or asset-diversification requirements for qualifying as a REIT. Thus, compliance with the REIT requirements may hinder our ability to make certain attractive investments.

Complying with REIT requirements may limit our ability to hedge effectively and may cause us to incur tax liabilities.

The REIT provisions of the Code substantially limit our ability to hedge our assets and liabilities. Any income from a hedging transaction that we enter into to manage risk of interest rate changes with respect to borrowings made or to be made to acquire or carry real estate assets does not constitute “gross income” for purposes of the 75% or 95% gross income tests that apply to REITs, provided that certain identification requirements are met. To the extent that we enter into other types of hedging transactions or fail to properly identify such transaction as a hedge, the income is likely to be treated as non-qualifying income for purposes of both of the gross income tests. As a result of these rules, we may be required to limit our use of advantageous hedging techniques or implement those hedges through a TRS. This could increase the cost of our hedging activities because our TRS may be subject to tax on gains or expose us to greater risks associated with changes in interest rates than we would otherwise want to bear. In addition, losses in our TRS will generally not provide any tax benefit, except that such losses may be carried forward to offset future taxable income of the TRS.

Changes to U.S. federal income tax laws could materially and adversely affect us and our stockholders.

The present U.S. federal income tax treatment of REITs and their shareholders may be modified, possibly with retroactive effect, by legislative, judicial or administrative action at any time, which could affect the U.S. federal income tax treatment of an investment in our shares. The U.S. federal income tax rules, including those dealing with REITs, are constantly under review by persons involved in the legislative process, the IRS and the U.S. Treasury Department, which results in statutory changes as well as frequent revisions to regulations and interpretations.

Risks Related to our Debt and Equity Securities

Our cash available for distribution to stockholders may not be sufficient to make distributions at expected levels, and we may need to borrow in order to make such distributions; consequently, we may not be able to make such distributions in full.

If cash available for distribution generated by our assets is less than our estimate or if such cash available for distribution decreases in future periods from expected levels, our inability to make the expected distributions could result in a decrease in the market price of our common stock. Distributions made by us will be authorized and determined by our board of directors in its sole discretion out of funds legally available therefor and will be dependent upon a number of factors, including restrictions under applicable law and our capital requirements. We may not be able to make or sustain distributions in the future. To the extent that we decide to make distributions in excess of our current and accumulated earnings and profits, such distributions would generally be considered a return of capital for U.S. federal income tax purposes to the extent of the holder’s adjusted tax basis in its shares. A return of capital is not taxable, but it has the effect of reducing the holder’s adjusted tax basis in its investment. To the extent that distributions exceed the adjusted tax basis of a holder’s shares, they will be treated as gain from the sale or exchange of such

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stock. If we borrow to fund distributions, our future interest costs would increase, thereby reducing our earnings and cash available for distribution from what they otherwise would have been.

Future offerings of debt, which would be senior to our common stock upon liquidation, and/or preferred equity securities, which may be senior to our common stock for purposes of distributions or upon liquidation, may adversely affect the market price of our common stock.

In the future, we may attempt to increase our capital resources by making additional offerings of debt or preferred equity securities, including medium-term notes, trust preferred securities, senior or subordinated notes and preferred stock. Upon liquidation, holders of our debt securities and shares of preferred stock and lenders with respect to other borrowings will receive distributions of our available assets prior to the holders of our common stock. Additional equity offerings may dilute the holdings of our existing stockholders or reduce the market price of our common stock, or both. Holders of our common stock are not entitled to preemptive rights or other protections against dilution. Our preferred stock, if issued, could have a preference on liquidating distributions or a preference on distribution payments that could limit our ability to make a distribution to the holders of our common stock. Because our decision to issue securities in any future offering will depend on market conditions and other factors beyond our control, we cannot predict or estimate the amount, timing or nature of our future offerings. Thus, our stockholders bear the risk of our future offerings reducing the market price of our common stock and diluting their stock holdings in us.

Increases in market interest rates may cause potential investors to seek higher dividend yields and therefore reduce demand for our common stock and result in a decline in our stock price.

One of the factors that may influence the price of our common stock is the dividend yield on our common stock (the amount of dividends as a percentage of the price of our common stock) relative to market interest rates. An increase in market interest rates, which are currently at low levels relative to historical rates, may lead prospective purchasers of our common stock to expect a higher dividend yield, which we may be unable or choose not to provide. Higher interest rates would likely increase our borrowing costs and potentially decrease the cash available for distribution. Thus, higher market interest rates could cause the market price of our common stock to decline.

The number of shares available for future sale could adversely affect the market price of our common stock.

We cannot predict whether future issuances of shares of our common stock or the availability of shares of our common stock for resale in the open market will decrease the market price per share of our common stock. Sales of a substantial number of shares of our common stock in the public market, or the perception that such sales might occur, could adversely affect the market price of the shares of our common stock. For example, upon physical settlement of a forward sale agreement in December 2018, we issued approximately 2.5 million shares of our common stock. Physical settlement of these forward sale agreements or other forward sale agreements in the future have resulted or will result in dilution to our earnings per share. In 2019, we sold approximately 6.5 million shares of our common stock under the New 2018 ATM Stock Offering Program (as defined in Item 7 under "Liquidity and Capital Resources") and in 2018, we sold approximately 3.0 million shares of our common stock under the prior at-the-market stock offering program and 6.7 million shares of our common stock through a public offering. In addition, we have registered shares of common stock that were reserved for issuance under our Restated 2012 Long Term Incentive Plan and under our 2014 Employee Stock Purchase Plan, and these shares can generally be freely sold in the public market, assuming any applicable restrictions and vesting requirements are satisfied. If any or all of these holders cause a large number of their shares to be sold in the public market, the sales could reduce the trading price of our common stock and could impede our ability to raise future capital on terms acceptable to us or at all.

The market price and trading volume of our common stock may be volatile.

The market price of our common stock may be volatile. In addition, the trading volume in our common stock may fluctuate and cause significant price variations to occur. If the market price of our common stock declines significantly, a holder may be unable to resell shares at a profit or at all. We cannot provide any assurance that the market price of our common stock will not fluctuate or decline significantly in the future.

Some of the factors that could negatively affect the market price of our common stock or result in fluctuations in the price or trading volume of our common stock include:

•actual or anticipated variations in our quarterly results of operations or distributions;

•changes in our funds from operations or earnings estimates;

•publication of research reports about us or the real estate, technology or data center industries;

•increases in market interest rates that may cause purchasers of our shares to demand a higher yield;

•changes in market valuations of similar companies;

•adverse market reaction to any additional debt we may incur in the future;

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•additions or departures of key personnel;

•actions by institutional stockholders;

•speculation in the press or investment community about our company or industry or the economy in general;

•the occurrence of any of the other risk factors presented in this Form 10-K; and

•general market and economic conditions.

Our earnings and cash distributions will affect the market price of shares of our common stock.

To the extent that the market value of a REIT’s equity securities is based primarily upon market perception of the REIT’s growth potential and its current and potential future cash distributions, whether from operations, sales, acquisitions, development or refinancing and is secondarily based upon the value of the underlying assets, shares of our common stock may trade at prices that are higher or lower than the net asset value per share. To the extent we retain operating cash flow for investment purposes, working capital reserves or other purposes rather than distributing the cash flow to stockholders, these retained funds, while increasing the value of our underlying assets, may negatively impact the market price of our common stock. Our failure to meet market expectations with regard to future earnings and cash distributions would likely adversely affect the market price of our common stock.

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ITEM 1B.    UNRESOLVED STAFF COMMENTS

None.

ITEM 2.    PROPERTIES

The information set forth under the caption “Our Portfolio” in Item 1 of this Annual Report on Form 10-K is incorporated by reference herein.

ITEM 3.    LEGAL PROCEEDINGS

In the ordinary course of our business, from time to time, we are subject to claims and administrative proceedings. We do not believe any currently outstanding matters would have, individually or in the aggregate, a material effect on our business, financial condition and results of operations or liquidity and cash flows.

ITEM 4.    MINE SAFETY DISCLOSURES

Not applicable.

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PART II

ITEM 5.    MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASE OF EQUITY SECURITIES.

A)Market Information

Our common stock is listed on the NASDAQ Global Select Market under the symbol “CONE”.

B)Holders

As of February 14, 2020, CyrusOne Inc. had 108 shareholders of record and 114,848,445 outstanding shares.

C)Distribution Policy

We have made distributions in the form of dividends each quarter since the completion of our initial public offering ("IPO"). In order to comply with the REIT requirements of the Code, we are required to make quarterly distributions to our shareholders of at least 90% of our taxable income. Distributions made by the Company are determined by our board of directors in its sole discretion. If we have underestimated our cash available for distribution, we may need to increase our borrowings in order to fund our intended distributions. Notwithstanding the foregoing, our $3.0 Billion Credit Facility and indentures restrict CyrusOne LP from making distributions to holders of its operating partnership units, or redeeming or otherwise repurchasing shares of its operating partnership units, after the occurrence and during the continuance of an event of default, except in limited circumstances including as necessary to enable CyrusOne Inc. to maintain its qualification as a REIT and to minimize the payment of income taxes.

D)Recent Sales of Unregistered Securities

Period	(a) Total Number of Shares of Common Stock Purchased(1)	(b) Average Price Paid per Common Share		(c) Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	(c) Maximum Number (or Approximate Dollar Value) of Shares that May Yet be Purchased
February 1, 2019 - February 28, 2019	164,748	$	52.90	N/A	N/A
April 1, 2019 - April 30, 2019	1,236	55.83		N/A	N/A
May 1, 2019 - May 31, 2019	1,917	58.74		N/A	N/A
July 1, 2019 - July 31, 2019	1,088	56.31		N/A	N/A
September 1, 2019 - September 30, 2019	786	73.65		N/A	N/A
November 1, 2019 - November 30, 2019	6,147	65.40		N/A	N/A
	175,922	$	53.53	N/A	N/A

(1) - Represents the common stock surrendered by employees to CyrusOne to satisfy such employee's tax withholding obligations in connection with the vesting of restricted stock.

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E)    Stock Performance

The following graph compares the cumulative total stockholder return on CyrusOne Inc.’s common stock for the year ended December 31, 2019, with the cumulative total return on the S&P 500 Market Index and the MSCI US REIT Index (RMZ). The comparison assumes that $100 was invested on December 31, 2014 in CyrusOne Inc.’s common stock and in each of these indices and assumes reinvestment of dividends, if any.

Pricing Date	CONE	S&P 500	MSCI US REIT
December 31, 2014	100.00	100.00	100.00
December 31, 2015	141.24	101.38	102.52
December 31, 2016	174.29	113.51	111.34
December 31, 2017	239.00	138.29	116.98
December 31, 2018	219.41	132.23	111.64
December 31, 2019	279.99	173.86	140.48

F)    Issuer Purchases of Equity Securities

None.

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ITEM 6.    SELECTED FINANCIAL DATA

The following table sets forth selected financial and operating data on a consolidated historical basis.

Our business was originally comprised of the historical data center activities and holdings of CBI. CBI operated a Cincinnati-based data center business for 10 years before acquiring Cyrus Networks LLC, a data center operator in Texas. In anticipation of our IPO, these businesses were combined under our operating partnership, CyrusOne LP, which was created as a Maryland limited partnership on July 31, 2012. CyrusOne Inc., a Maryland corporation, was also formed on July 31, 2012, and is the parent of the wholly-owned general partner of the operating partnership. Effective December 31, 2013, CyrusOne Inc. qualified as a real estate investment trust for federal income tax purposes. Certain activities are conducted through our taxable REIT subsidiaries, CyrusOne TRS Inc., a Delaware corporation, and CyrusOne Finance Corp., a Maryland corporation.

The financial information presented below as of December 31, 2019 and 2018, and results for the years ended December 31, 2019, 2018 and 2017, has been derived from our audited consolidated financial statements included elsewhere in this Form 10-K. The financial information for the years ended December 31, 2016 and 2015 have been derived from our audited consolidated financial statements not included in this Form 10-K.

The following selected financial data should be read in conjunction with our combined historical financial statements and the related notes and with “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” which are included in this Form 10-K.

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IN MILLIONS, except per share data
	2019			2018			2017			2016			2015
Statement of Operations Data:
Revenue	$	981.3		$	821.4		$	672.0		$	529.1		$	399.3
Operating expenses:
Property operating expenses	383.4			292.4			235.1			187.5			148.7
Sales and marketing	20.2			19.6			17.0			16.9			12.1
General and administrative	83.5			80.6			67.0			60.7			46.6
Depreciation and amortization	417.7			334.1			258.9			183.9			141.5
Transaction, acquisition, integration and other related expenses(a)	8.8			5.0			11.9			4.6			18.4
Impairment losses(b)	0.7			—			58.0			5.0			9.2
Operating income	67.0			89.7			24.1			70.5			22.8
Interest expense, net	(82.0		)	(94.7		)	(68.1		)	(48.8		)	(41.2		)
Gain on marketable equity investment	132.3			9.9			—			—			—
Loss on early extinguishment of debt(c)	(71.8		)	(3.1		)	(36.5		)	—			—
Foreign currency and derivative losses, net	(7.5		)	—			—			—			—
Other expense	(0.3		)	—			—			—			—
Income tax benefit (expense)	3.7			(0.6		)	(3.0		)	(1.8		)	(1.8		)
Income (loss) from continuing operations	41.4			1.2			(83.5		)	19.9			(20.2		)
Noncontrolling interest in net loss	—			—			—			—			(4.8		)
Net income (loss) attributed to common shareholders	$	41.4		$	1.2		$	(83.5	)	$	19.9		$	(15.4	)
Per share data:
Basic weighted average common shares outstanding	112.1			99.8			88.9			78.3			54.3
Diluted weighted average common shares outstanding	112.5			100.4			88.9			79.0			54.3
Basic income (loss) per common share	$	0.36		$	—		$	(0.95	)	$	0.24		$	(0.30	)
Diluted income (loss) per common share	$	0.36		$	—		$	(0.95	)	$	0.24		$	(0.30	)
Dividends declared per share	$	1.92		$	1.84		$	1.68		$	1.52		$	1.26
Balance Sheet Data (at year end):
Investment in real estate, net	$	4,710.3		$	4,293.0		$	3,058.4		$	2,023.1		$	1,392.0
Operating lease right-of-use assets, net(d)	161.9			—			—			—			—
Total assets	6,142.0			5,592.5			4,312.1			2,852.4			2,195.6
Debt(e)	2,886.6			2,624.7			2,089.4			1,240.1			996.5
Finance lease liabilities and operating lease liabilities(d)	227.6			156.7			142.0			146.5			162.2
Other Financial Data:
Capital expenditures	$	876.4		$	1,328.5		$	1,406.8		$	731.1		$	234.5

(a) Represents legal, accounting and consulting fees and directly related general and administration costs incurred in connection with completed and potential business combinations, integration of acquisitions and failed transactions.

(b) See Item 7 for discussion of costs incurred in 2019 and 2017. The 2016 amount is primarily related to two properties, South Bend-Crescent, a leased facility, and Cincinnati-Goldcoast, an owned facility. The 2015 amount represents the exit of Austin 1, a leased facility.

(c) See Item 7 for discussion of costs incurred in 2019, 2018 and 2017.

(d) See Note 6, Leases - As a Lessee, to our audited consolidated financial statements.

(e) See Note 12, Debt, to our audited consolidated financial statements included elsewhere in this Form 10-K for details of debt as of December 31, 2019 and 2018. As of December 31, 2017, debt consisted of our $700.0 million 5.000% senior notes due 2024, $500.0 million 5.375% senior notes due 2027 and term loan facility. As of December 31, 2016 and 2015, debt consisted of our $525.0 million 6.375% senior notes due 2022, revolving credit facility and term loan facility.

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ITEM 7.    MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

You should read the following discussion and analysis of our results of operations, financial condition and liquidity in conjunction with our consolidated financial statements and the related notes included elsewhere in this Annual Report on Form 10-K ("Form 10-K"). Some of the information contained in this discussion and analysis or set forth elsewhere in this report, including information with respect to our plans and strategies for our business, statements regarding the industry outlook, our expectations regarding the future performance of our business and the other non-historical statements contained herein are forward-looking statements. See “Special Note Regarding Forward-Looking Statements.” You should also review the “Risk Factors” section of this report for a discussion of important factors that could cause actual results to differ materially from the results described herein or implied by such forward-looking statements.

The consolidated financial statements included in this Form 10-K reflect the historical financial position, results of operations and cash flows of CyrusOne for all periods presented.

Overview

Our Company. We are a fully integrated, self-managed data center real estate investment trust ("REIT") that owns, operates and develops enterprise-class, carrier-neutral, multi-tenant and single-tenant data center properties. Our data centers are generally purpose-built facilities with redundant power and cooling. They are not network specific and enable customer connectivity to a range of telecommunication carriers. We provide mission-critical data center facilities that protect and ensure the continued operation of information technology ("IT") infrastructure for approximately 1,000 customers in 49 data centers, including two recovery centers in 13 markets (10 cities in the U.S., London, U.K., Singapore and Frankfurt, Germany).

Our Portfolio

We own and operate 49 data centers, including two recovery centers totaling 7.1 million Net Rentable Square Feet ("NRSF"), of which 85% of the Colocation Square Feet ("CSF") is leased and has 797 megawatts ("MW") of power capacity. This includes 13 buildings where the Company leases such facilities. We are lessee of approximately 13% of our total operating NRSF as of December 31, 2019. Also included in our total NRSF, CSF and MW are pre-stabilized assets (which include data halls that have been in service for less than 24 months and are less than 85% leased) that have approximately 315,125 NRSF and 28% of the CSF is leased with capacity of 30 MW of power.

In addition, we have properties under development comprising approximately 1.7 million NRSF and 92 MW of power capacity. The estimated remaining total costs to develop these properties is estimated to be a range between $544.0 million and $634.0 million. The final costs to develop could change depending on the capital improvements required based on the lease contracts executed on such properties. We also have 499 acres of land available for future data center development.

In 2018, we expanded our data center operations through the acquisition of data centers, buildings under development and land for future development in Europe including London, United Kingdom, Frankfurt, Germany, Amsterdam, The Netherlands and Dublin, the Republic of Ireland. Through our acquisition of Zenium, we established a team, primarily based in London, U.K., to oversee and manage our European activities.

Operational Overview

The following discussion provides an overview of the Company’s capital and financing activity, operations and transactions for the year ended December 31, 2019 and should be read in conjunction with the full discussion of the Company’s operating results, liquidity and capital resources included in this Form 10-K, as well as the risk factors set forth in Part I, Item 1A.

Outlook

We seek to maximize long-term earnings growth and shareholder value primarily through increasing cash flow at existing properties and developing high-quality data center assets and campuses at attractive cash yields with long-term, stable operating income. In addition, the Company will, from time to time, acquire existing properties which meet our strategic criteria, offer in-place cash flow and have strong growth prospects.

Fundamentals for data center real estate remain strong, supported by trends that particularly favor data center assets, including the exponential growth in global data, the growth of e-commerce and demand for outsourcing of data storage and cloud-based applications. Growth in large cloud-based demand has moderated in the U.S. in 2019 due to what we believe has been increased supply in major U.S. markets and following very strong absorption in 2018. We anticipate continued general economic growth in

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the U.S. markets and strong demand in Europe in 2020, which we expect to result in ongoing positive demand for data center space in the markets we operate as companies expand and upgrade information system platforms.

New data center development, including speculative development, is present in most domestic and international metropolitan markets in response to strong tenant demand. However, construction remains rational in relation to net absorption in most markets. We expect that the operating environment will continue to be favorable for market demand for data center real estate.

In terms of capital investment, we will continue to pursue selective development of new buildings and the opportunistic acquisition of buildings in markets where we perceive demand and market rental rates will provide attractive financial returns.

We may, from time to time, selectively dispose of non-strategic assets in an effort to enhance long-term growth in earnings and cash flows, as well as to improve the overall quality of our portfolio and to recycle capital.

We anticipate having sufficient liquidity to fund our capital and operating expenses, including costs to maintain our properties and distributions, though we may finance investments, including acquisitions and developments, with the issuance of new shares of our common stock, proceeds from asset sales or through additional borrowings. Please see “Liquidity and Capital Resources” for additional discussion.

Inflation

The U.S. economy has experienced low inflation over the last several years, as a result, inflation has not had a significant impact on our business. Our customer leases generally do not provide for annual increases in rent based on inflation. As a result, we bear the risk of increases in the costs of operating and maintaining our data center facilities. Some of our leases have annual rent escalators, typically ranging from 1-3%; as a result we bear the risk of increases in operating costs. Some of our leases are structured to pass-through the cost of sub-metered utilities. In the future, we expect more of our leases to pass-through utility costs. In addition, approximately 70% of our leases expire within six years which enables us to replace existing leases with new leases at then existing rates.

Summary of Significant Transactions and Activities for the Year Ended December 31, 2019

Real Estate Acquisitions, Development and Other Activities

During the year ended December 31, 2019, we had cash capital expenditures of $876.4 million, of which $866.5 million related to the construction of data centers. The expansion and development of additional power capacity and building square feet contributed to our year-over-year revenue increase in 2019. As of December 31, 2019, the remaining cost to our existing development pipeline is $544.0 million to $634.0 million and are expected to add 92 MWs and 379,902 CSF. In addition, during the year ended December 31, 2019, we acquired 74 acres of land in Dublin, the Republic of Ireland, San Antonio, Texas, Santa Clara, California, and Council Bluffs, Iowa for future development for $54.7 million.

Capital and Financing Activity

On December 5, 2019, the Operating Partnership and CyrusOne Finance Corp., a single-purpose finance subsidiary, both wholly-owned subsidiaries of the Company (together, the "Issuers") completed a public offering of $600.0 million aggregate principal amount of 2.900% senior notes due 2024 (the "2024 Notes") and $600.0 million aggregate principal amount of 3.450% senior notes due 2029 (the "2029 Notes"). The Company received proceeds of $1,197.4 million, net of underwriting costs and other deferred financing costs. The Company used the proceeds to finance the repurchase of all of its 5.000% Senior Notes due 2024 (the "Old 2024 Notes") and all of its 5.375% Senior Notes due 2027 (the "Old 2027 Notes" and together with the Old 2024 Notes, the "Existing Notes"), including the payment of consent payments, for the redemption and discharge of Existing Notes that remained outstanding after the completion of the tender offers and consent solicitations, for the payment of related premiums, fees, discounts and expenses and for general corporate purposes. In connection with the repurchase of the Existing Notes, the Company recognized a loss on early extinguishment of debt of $71.8 million.

In August 2019, the Company entered into $500.0 million of cross-currency swaps that mature in March 2023 whereby the Company pays floating interest rate and receives floating interest rate to hedge the variability of future cash flows attributable to changes in the 1-month USD LIBOR versus EUR LIBOR rates (a pay-floating, receive-floating interest rate swap). In addition, in September 2019 the Company entered into a $300.0 million interest rate swap to hedge variable rate exposure to 1-month LIBOR to a fixed rate of 1.185%.

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During the year ended December 31, 2019, the Company sold approximately 6.5 million shares of its common stock under the New 2018 ATM Stock Offering Program. The sales generated net proceeds of approximately $355.6 million, net of sales commissions, underwriting discounts and estimated expenses of $4.3 million. As of December 31, 2019, there was approximately $290.1 million in remaining capacity of the $750.0 million authorized under the New 2018 ATM Stock Offering Program (as defined in Item 7 under "Liquidity and Capital Resources").

During the fourth quarter of 2019, CyrusOne Inc. entered into a forward sale agreement with a financial institution acting as forward purchaser under the New 2018 ATM Stock Offering Program with respect to 1.6 million shares of its common stock at an initial forward price of $61.67 per share. The Company has twelve months to settle the forward sale agreement. The Company did not receive any proceeds from the sale of its common shares by the forward purchasers. The Company currently expects to fully physically settle the forward equity sale agreement and receive cash proceeds upon one or more settlement dates at the Company’s discretion, prior to the final settlement dates under the forward equity sale agreement in November 2020, in which case we expect to receive aggregate net cash proceeds at settlement equal to the number of shares specified in such forward equity sale agreement multiplied by the relevant forward price per share. The weighted average forward sale price that we expect to receive upon physical settlement of the agreement will be subject to adjustment for (i) a floating interest rate factor equal to a specified daily rate less a spread, (ii) the forward purchasers’ stock borrowing costs and (iii) scheduled dividends during the term of the agreement. We have not settled any portion of this forward equity sale agreement as of the date of this filing.

Concentration of revenue

We define our annualized backlog as the twelve-month recurring revenue (calculated in accordance with generally accepted accounting principles in the U.S. ("GAAP")) for executed lease contracts achieved upon full occupancy which have not commenced as of the end of a period. Our backlog as of December 31, 2019 and 2018 was approximately $51.7 million and approximately $54.0 million, respectively. During 2019, one customer represented 21% of our revenue. We expect these backlog lease contracts to primarily commence through the first half of 2020. Because GAAP revenue for any period is generally a function of straight line revenue recognized from lease contracts in existence at the beginning of a period, as well as lease contract renewals and new customer lease contracts commencing during the period, backlog as of any period is not necessarily indicative of near-term performance. Our definition of backlog may differ from other companies in our industry.

Critical Accounting Estimates

The preparation of financial statements in conformity with GAAP requires management to use judgment in the application of accounting policies, including making estimates and assumptions. If our judgment or interpretation of the facts and circumstances relating to various transactions had been different or different assumptions were made, it is possible that different accounting policies would have been applied, resulting in different financial results or a different presentation of our financial statements. Estimates, judgments and assumptions are based on historical experiences that we believe to be reasonable under the circumstances. From time to time we re-evaluate those estimates and assumptions. Our discussion and analysis of financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with GAAP. Our management evaluates these estimates on an ongoing basis, based upon information currently available and on various assumptions management believes are reasonable as of the date of the financial statements.

Our actual results may differ from these estimates. We have provided a summary of our significant accounting policies in Note 3, Summary of Significant Accounting Policies, to our audited consolidated financial statements included in this Form 10-K.

Revenue Recognition

Our revenue consists of lease revenue and revenue from contracts with customers. The revenues from colocation rent revenue, metered power reimbursements and interconnection revenue are recognized under the lease accounting standard and revenues from managed services, equipment sales, installations and other services (generally revenue from contracts with customers) are recognized under the revenue accounting standard. An allowance for doubtful accounts is recognized when the collection of rent receivables is deemed to be unlikely. We adopted Accounting Standards Codification (“ASC”) 842, Leases (“ASC 842”), the new accounting standard for leases, effective January 1, 2019 using the modified retrospective approach and prior periods were not restated. In addition, we adopted Revenue from Contracts with Customers (“ASC 606”), the new accounting standard for revenue from contracts with customers, effective January 1, 2018 using the modified retrospective approach. See Note 4, Recently Issued Accounting Standards, Note 5, Revenue Recognition and Note 6, Leases - As a Lessee, in our audited consolidated financial statements included in this Form 10-K for additional information related to the adoption.

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Lease Revenue

Our leasing revenue primarily consists of colocation rent, metered power reimbursements and interconnection revenue and is accounted for under ASC 842, Leases. We generally are not entitled to reimbursements for rental expenses including real estate taxes, insurance or other common area operating expenses. The accounting for leases is highly dependent on the classification of the lease as an operating or finance lease and requires judgment and estimates in evaluating the principles of the new accounting standard for leases, including whether an arrangement is a lease, the fair value of the identified asset, expected lease term and economic life of the asset.

Colocation Rent Revenue

Colocation rent revenues, including interconnection revenue, are fixed minimum lease payments generally billed monthly in advance based on the contracted power or leased space. Some contracts may provide initial free rent periods and rents that escalate over the term of the contract. If rents escalate without the lessee gaining access to or control over additional leased power or space at the beginning of the lease term, the rental payments are recognized as revenue on a straight-line basis over the term of the lease. If rents escalate because the lessee gains access to and control over additional power and or leased space, revenue is recognized in proportion to the additional power or space in the periods that the lessee has control over the use of the additional power or space. The excess of revenue recognized over amounts contractually due is recognized as a straight-line receivable, which is included in rent and other receivables in our Consolidated Balance Sheets. Some of our leases are structured on a gross basis in which the customer pays a fixed amount for colocation space and power. The revenue for these types of leases is recorded in colocation rent revenue.

Metered Power Reimbursements Revenue

Some of our leases provide that the customer is separately billed for power based upon actual or estimated metered usage at rates then in effect. Metered power reimbursement revenue is variable lease payments generally billed one month in arrears, and an estimate of this revenue is accrued in the month that the associated power is provided and recorded in metered power reimbursements revenue.

Revenue from Contracts with Customers

Managed services, equipment sales, installations and other services are recognized under ASC 606.

Equipment sold by us generally consists of servers, switches, networking equipment, cable infrastructure and cabinets. Revenue is recognized at a point-in-time when control of the equipment transfers to the customer from the Company, which generally occurs upon delivery to the customer.

Managed services include providing a full-service managed data center, monitoring customer computer equipment, managing backups and storage, utilization reporting and other related ancillary information technology services. Management service contracts generally range from one to five years.

Installation services include mounting, wiring, and testing of customer owned equipment. The installation period is typically short term in duration, and accordingly, revenue from the installation of customer equipment is recognized at a point-in-time once the installation is complete and the performance obligation is satisfied. Other services generally include installation of customer equipment, performing customer system re-boots, server cabinet and cage management, power monitoring, shipping and receiving, resolving technical issues, and other services requested by the customer. Other service revenue is measured based on the consideration specified in the contract and recognized over time as we satisfy the performance obligation.

Acquisition of Properties

Investment in real estate consist of land, buildings, improvements and integral equipment utilized in our data center operations. We expect most acquisitions to be asset acquisitions rather than a business combination as our typical acquisitions consist of properties whereby substantially all the fair value of gross assets acquired is concentrated in a single asset set (land, building and in-place leases), which are treated as asset acquisitions. Asset acquisitions are recorded at the cumulative acquisition costs and allocated to the assets acquired and liabilities assumed on a relative fair value basis. The fair value of identifiable tangible assets such as land, building, building and land improvements, and tenant improvements is determined on an “as-if-vacant” basis. In estimating the fair value of each component acquired, management uses its judgment and estimates, considers appraisals, replacement cost, its own analysis of recently acquired and existing comparable properties, market rental data and other related information.

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Capitalization of Costs

We capitalize costs directly related to the development, pre-development or improvement of our investment in real estate, referred to as capital projects and other activities included within this paragraph. Costs associated with our capital projects are capitalized as incurred. If the project is abandoned, these costs are expensed during the period in which the project is abandoned. The accounting for capitalization of costs requires judgment and estimates to evaluate each project, including the timing and activities necessary to prepare an asset for its intended use, evaluation of direct and indirect project costs, and the allocation of costs to specific projects. Costs considered for capitalization include, but are not limited to, construction costs, interest, real estate taxes, insurance and utilities, if appropriate. We capitalize indirect costs such as personnel, office and administrative expenses that are directly related to our development projects based on an estimate of the time spent on the construction and development activities. These costs are capitalized only during the period in which activities necessary to ready an asset for its intended use are in progress and such costs are incremental and identifiable to a specific activity to get the asset ready for its intended use. We determine when the capitalization period begins and ends through communication with project and other managers responsible for the tracking and oversight of individual projects. In the event that the activities to ready the asset for its intended use are suspended, the capitalization period will cease until such activities are resumed. In addition, we capitalize incremental initial direct costs incurred for successful origination of new leases which include internal and external leasing commissions. Interest expense is capitalized based on actual qualifying capital expenditures from the period when development commences until the asset is ready for its intended use, at the weighted average borrowing rate during the period. These costs are included in investment in real estate and depreciated over the estimated useful life of the related assets.

Costs incurred for maintaining and repairing our properties, which do not extend their useful lives, are expensed as incurred.

Impairment

Management reviews the carrying value of long-lived assets, including intangible assets with finite lives, when events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. When such impairment indicators exist, we review an estimate of the undiscounted future cash flows expected to result from the use of an asset (or group of assets) and proceeds from its eventual disposition and compare such amount to its carrying amount. To determine the cash flows we consider factors such as future operating income, leasing demand, rental rates, competition and other factors. The estimate of expected future cash flows is inherently uncertain and relies to a considerable extent on management estimates and assumptions, including current and future market conditions, projected growth in our CSF, projected recurring rent churn (as described below), lease renewal rates and our ability to generate new leases on favorable terms. If our undiscounted net cash flows indicate that we are unable to recover the carrying value of the asset, an impairment loss is recognized. An impairment loss is measured as the amount by which the asset’s carrying value exceeds its estimated fair value. The evaluation whether assets may not be recoverable and the estimates and assumptions used to determine undiscounted cash flows and fair value requires significant judgment by management.

For the year ended December 31, 2019, we recognized an impairment loss of $0.7 million, primarily due to an impairment loss on the South Bend-Monroe facility, which is being actively marketed to sell. For the year ended December 31, 2018, we recognized no impairment losses. For the year ended December 31, 2017, we recognized impairment losses of $58.0 million which included the impairment loss of $54.4 million for our leased data center facilities in the Connecticut markets and $3.6 million related to our leased facility in Singapore, which are included in impairment losses in our Consolidated Statements of Operations.

Key Operating Metrics

Annualized Rent. We calculate annualized rent as monthly contractual rent (defined as cash rent including customer reimbursements for metered power) under existing customer leases as of December 31, 2019, multiplied by 12. Monthly contractual rent is primarily for data center space, power and connectivity; however, it includes rent for office space and other ancillary services. For the month of December 2019, customer reimbursements were $137.6 million annualized and consisted of reimbursements by customers across all facilities with separately metered power. Other companies may not define annualized rent in the same manner. Accordingly, our annualized rent may not be comparable to others. Management believes annualized rent provides a useful measure of our in-place lease revenue.

Colocation Square Feet ("CSF"). We calculate leased total CSF as the NRSF at an operating facility that is leased or readily available for lease as colocation space, where customers locate their servers and other IT equipment.

Leased Rate. We calculate leased rate by dividing leased total CSF by total CSF. Percent occupied differs from Percent leased. Percent occupied is determined based on occupied CSF billed to customers under signed leases divided by total CSF. Leases signed but that have not commenced are not included.

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Recurring Rent Churn Percentage. We calculate recurring rent churn percentage as any reduction in recurring rent due to customer terminations, service reductions or net pricing decreases as a percentage of rent at the beginning of the period, excluding any impact from metered power reimbursements or other usage-based billing.

Capital Expenditures. Expenditures that expand, improve or extend the life of real estate and non-real estate property are capital expenditures. Management views its capital expenditures as comprised of acquisitions of real estate, development of real estate, recurring real estate expenditures and all other non-real estate capital expenditures. Purchases of land or buildings from third parties represent acquisitions of real estate. Capital spending that expands or improves our data centers is deemed development of real estate. Replacements of data center equipment are considered recurring real estate expenditures. Purchases of software, computer equipment and furniture and fixtures are included in non-real estate capital expenditures.

Factors That May Influence Future Results of Operations

Rental Income. Our revenue growth depends on our ability to maintain our existing revenue base and to sell new capacity that becomes available as a result of our development activities. As of December 31, 2019, we have leased approximately 85% of our CSF. Our ability to grow revenue with our existing customers will also be affected by our ability to maintain or increase rental rates at our properties. We believe the current rates charged to our customers generally reflect appropriate market rates. This is consistent with our relatively flat historical re-leasing spreads. As such, we do not anticipate significant rate increases or decreases in the aggregate as contracts renew. However, negative trends in one or more of these factors could adversely affect our revenue in future periods. Future economic downturns, regional downturns affecting our markets, or oversupply of or decrease in demand for data center colocation services could impair our ability to attract new customers or renew existing customers’ leases on favorable terms, and this could adversely affect our ability to maintain or increase revenues.

Leasing Arrangements. As of December 31, 2019, 18% of our leased NRSF was to customers on a gross basis. Under a gross lease, the customer pays a fixed monthly rent amount, and we are responsible for all data center facility electricity, maintenance and repair costs, property taxes, insurance and other utilities associated with that customer’s space. For leases under this model, fluctuations in our customers’ monthly utilization of power and the prices our utility providers charge us impact our profitability. As of December 31, 2019, 82% of our leased NRSF was to customers with separately billed metered power. Under the metered power model, the customer pays us a fixed monthly rent amount, plus its actual costs of sub-metered electricity used to power its data center equipment, plus an estimate of costs for electricity used to power supporting infrastructure for the data center, expressed as a factor of the customer’s actual electricity usage. We are responsible for all other costs listed in the description of the gross lease above. Fluctuations in a customer’s utilization of power and the supplier pricing of power do not impact our profitability under the metered power model. In future periods, we expect more of our contracts to be structured to bill power on a metered power basis.

Growth and Expansion Activities. Our ability to grow our revenue and profitability will depend on our ability to acquire and develop data center space globally at an appropriate cost and to lease the data center space to customers on favorable terms. During the year ended December 31, 2019, we increased our operational NRSF by 6.1%, bringing our total operating NRSF to approximately 7.1 million at December 31, 2019. Our portfolio, as of December 31, 2019, also included approximately 1.7 million NRSF under development, as well as 1.9 million NRSF of additional powered shell space under roof available for development. In addition, we have approximately 499 acres of land that are available for future data center shell development. We expect that the eventual construction of this future development space will enable us to accommodate a portion of the future demand of our existing and future customers and increase our future revenue, profitability and cash flows.

Scheduled Lease Expirations. Our ability to maintain low recurring rent churn and renew expiring customer leases on favorable terms will impact our results of operations. Our data center uncommitted capacity as of December 31, 2019, was approximately 1.7 million NRSF. Excluding month-to-month leases, leases representing 11% and 9% of our total NRSF are scheduled to expire in 2020 and 2021, respectively. These leases represented approximately 15% and 16% of our total annualized rent as of December 31, 2019. Month-to-month leases represented 3% of our total annualized rent as of December 31, 2019. Recurring rent churn was 4.9% for the year ended December 31, 2019, as compared to 5.0% for the year ended December 31, 2018. Our recurring rent churn for each quarter in 2019 ranged from 0.6% to 2.1%, in comparison to a range of 0.5% to 2.6% in 2018.

Conditions in Significant Markets. Our properties are located in 13 distinct markets (10 cities in the U.S., plus London, U.K., Singapore and Frankfurt, Germany). Cincinnati, Dallas, Houston, New York Metro, Northern Virginia, Phoenix and San Antonio accounted for approximately 83% of our annualized rent as of December 31, 2019. We have recently expanded into development in Amsterdam, The Netherlands, and Dublin, the Republic of Ireland. General economic conditions and regulations in these markets could impact our overall profitability.

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Results of Operations

Comparison of Years Ended December 31, 2019 and 2018

 

IN MILLIONS, except per share data
For the Year Ended December 31,	2019			2018			$ Change 2019 vs. 2018			% Change 2019 vs. 2018
Revenue:
Colocation rent	$	793.5		$	684.7		$	108.8		15.9	%
Metered power reimbursements	138.8			104.0			34.8			33.5	%
Equipment sales	29.7			15.3			14.4			94.1	%
Other revenue	19.3			17.4			1.9			10.9	%
Total revenue	981.3			821.4			159.9			19.5	%
Operating expenses:
Property operating expenses	383.4			292.4			91.0			31.1	%
Sales and marketing	20.2			19.6			0.6			3.1	%
General and administrative	83.5			80.6			2.9			3.6	%
Depreciation and amortization	417.7			334.1			83.6			25.0	%
Transaction, acquisition, integration and other related expenses	8.8			5.0			3.8			76.0	%
Impairment losses	0.7			—			0.7			n/m
Total operating expenses	914.3			731.7			182.6			25.0	%
Operating income	67.0			89.7			(22.7		)	(25.3	)%
Interest expense, net	(82.0		)	(94.7		)	12.7			(13.4	)%
Gain on marketable equity investment	132.3			9.9			122.4			n/m
Loss on early extinguishment of debt	(71.8		)	(3.1		)	(68.7		)	n/m
Foreign currency and derivative losses, net	(7.5		)	—			(7.5		)	n/m
Other expense	(0.3		)	—			(0.3		)	n/m
Net income before income taxes	37.7			1.8			35.9			n/m
Income tax benefit (expense)	3.7			(0.6		)	4.3			n/m
Net income	$	41.4		$	1.2		$	40.2		n/m
Operating gross margin	6.8		%	10.9		%
Capital expenditures *:
Asset acquisitions, primarily real estate, net of cash acquired	$	—		$	462.8		$	(462.8	)	n/m
Investment in real estate	866.5			855.2			11.3			1.3	%
Recurring maintenance capital	9.9			10.5			(0.6		)	(5.7	)%
Total	$	876.4		$	1,328.5		$	(452.1	)	(34.0	)%
Metrics information:
CSF*	4,165,000			3,819,000			346,000			9.1	%
Leased rate*	85		%	88		%
Income per share - basic and diluted	$	0.36		$	—
Dividends declared per share	$	1.92		$	1.84

* See “Key Operating Metrics” above for a definition of capital expenditures, CSF and leased rate.

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Operations

As of December 31, 2019, we had approximately 1,000 customers (not including customers that have signed leases but have not begun occupying space), many of which have signed leases for multiple sites and multiple services, amenities and/or features. We generate recurring revenues from leasing colocation space and nonrecurring revenues from equipment sales and installation services. We provide customers with data center services pursuant to leases with initial terms ranging from three to ten years. As of December 31, 2019, the weighted average remaining term was 4.3 years based upon annualized rent. Lease expirations through 2022, excluding month-to-month leases, represent 28% of our total NRSF, or 42% of our aggregate annualized rent as of December 31, 2019. At the end of the lease term, customers may allow the contract to expire, sign a new lease or automatically renew pursuant to the terms of their lease. The automatic renewal period could be for varying lengths, depending on the terms of the contract, such as, for the original lease term, one year or month-to-month. As of December 31, 2019, 1% of our NRSF was subject to month-to-month leases.

Revenue

For the year ended December 31, 2019, revenue was $981.3 million, an increase of $159.9 million, or 19.5% compared to $821.4 million for the year ended December 31, 2018. Recurring rent churn of 4.9%, excluding a 0.4% impact related to a customer that terminated in 2016, for the year ended December 31, 2019 decreased by 0.1% as compared to 5.0% for the year ended December 31, 2018.

The revenue increase of $159.9 million for the year ended December 31, 2019, as compared to the year ended December 31, 2018 is primarily due to the following:

• $125.4 million increase in colocation rent primarily due to increases from existing and new customers, including a $36.1 million increase due to the acquisition of Zenium in August 2018;

• $29.9 million decrease in colocation rent primarily due to rent churn in Houston, Dallas, Cincinnati and New York;

• $34.8 million increase in metered power reimbursements primarily due to a $37.9 million increase from existing and new customers, including a $14.2 million increase due to the acquisition of Zenium in August 2018, offset in part by $3.1 million of rent churn;

• $14.4 million increase in equipment sales and installation services primarily due to one significant customer;

• $7.1 million increase in termination fees;

• $6.3 million increase in interconnection revenue; and

• $1.8 million increase in other revenue from managed services.

Operating Expenses

Property operating expenses

For the year ended December 31, 2019, property operating expenses were $383.4 million, an increase of $91.0 million, or 31.1%, compared to $292.4 million for the year ended December 31, 2018 primarily due to the following:

• $44.1 million increase in property operating expenses primarily due to additional assets placed into service from development activities:

◦ $23.7 million increase in electricity primarily due to increases in usage and rates

◦ $11.2 million increase in repairs and maintenance

◦ $9.2 million increase in contract and security services

• $23.9 million increase in property operating expenses as a result of the acquisition of Zenium in August 2018;

• $11.9 million increase in rent expense for leased property and equipment primarily due to a $15.9 million increase from the implementation of the new accounting standard for leases offset in part by a $4.0 million decrease from lease expirations in 2018;

• $11.4 million increase in equipment cost of sales;

• $0.8 million increase in property taxes and other operating expense; offset in part by

• $1.1 million decrease in other property operating expenses.

Sales and marketing

For the year ended December 31, 2019, sales and marketing expenses were $20.2 million, an increase of $0.6 million, or 3.1%, compared to $19.6 million for the year ended December 31, 2018 primarily related to increased payroll-related costs related to the acquisition of Zenium in August 2018.

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General and administrative expenses

For the year ended December 31, 2019, general and administrative expenses were $83.5 million, an increase of $2.9 million, or 3.6%, compared to $80.6 million for the year ended December 31, 2018, primarily due to the following:

• $4.4 million increase primarily due to the acquisition of Zenium in August 2018;

• $1.7 million increase in legal and professional expenses due to expanding our business activities and lower capitalization under the new leasing standard;

• $1.6 million increase in IT license support and maintenance; partially offset by

• $2.2 million decrease due to a reduction in professional fees associated with implementing new accounting standards;

• $2.0 million decrease for employee-related costs including stock compensation and severance related costs; and

• $0.6 million decrease in other general and administrative expenses.

Depreciation and amortization expense

For the year ended December 31, 2019, depreciation and amortization expense was $417.7 million, an increase of $83.6 million, or 25.0%, compared to $334.1 million for the year ended December 31, 2018. This increase was primarily driven by $39.5 million related to the acquisition of Zenium in August 2018 and $47.9 million related to asset additions that were placed in service after the fourth quarter of 2018, offset in part by $3.8 million related to the derecognition of build-to-suit leases and their classification as operating leases under the new accounting standard for leases discussed in Note 4, Recently Issued Accounting Standards.

Non-Operating Income and Expenses

Interest expense, net

For the year ended December 31, 2019, interest expense, net was $82.0 million, a decrease of $12.7 million, or 13.4%, as compared to $94.7 million for the year ended December 31, 2018.

• $16.1 million increase due to increases in debt balances as compared to the prior year period, offset in part by following;

• $12.6 million decrease related to the cross-currency and interest rate swaps;

• $8.5 million decrease due to higher capitalized interest resulting from increased development activity;

• $7.3 million decrease due to finance leases that were derecognized under the new accounting standard for leases. See Note 4, Recently Issued Accounting Standards; and

• $0.4 million decrease related to higher interest income.

Gain on marketable equity investment

For the year ended December 31, 2019, the gain on our marketable equity investment in GDS was $132.3 million, an increase of $122.4 million, as compared to $9.9 million for the year ended December 31, 2018. For the year ended December 31, 2019, the fair value increased 123.4%. For the year ended December 31, 2018, the fair value increased 2.5%. See Note 9, Equity Investments, related to our sale of a portion of our equity investment in GDS.

Loss on early extinguishment of debt

For the year ended December 31, 2019, loss on early extinguishment of debt was $71.8 million, primarily due to the Company's repayment of the $1.2 billion aggregate outstanding principal balance of existing senior notes upon the completion of a new senior notes offering in December 2019. For the year ended December 31, 2018, loss on early extinguishment of debt was $3.1 million, primarily due to the Company's repayment of the $900.0 million aggregate outstanding principal balance of its previous credit facility upon entering into a new senior unsecured credit agreement in March 2018.

Foreign currency and derivative losses, net

For the year ended December 31, 2019, Foreign currency and derivative losses, net were $7.5 million which was the result of a decrease in the fair value of the portion of our Euro/USD cross-currency swap that were not designated as hedges and changes in the fair value were immediately recognized in earnings. As of December 31, 2019, we have $290.9 million notional Euro/USD cross-currency swaps contracts for €261.1 million not designated and changes in the forward USD/Euro spot exchange rate will impact the fair value of these swaps. If the US dollar weakens versus the Euro, the fair value of the swap liability may increase and since these hedges are not designated, we may incur losses that would be immediately recognized in earnings.

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Impairment loss on real estate

For the year ended December 31, 2019, impairment loss on real estate was $0.7 million, primarily due to an impairment loss on the South Bend - Monroe facility, which is being actively marketed for sale.

Income tax expense

For the year ended December 31, 2019, income tax benefit was $3.7 million, as compared to an income tax expense of $0.6 million for the year ended December 31, 2018 primarily related to the decrease in deferred tax liability related to the acquisition of Zenium in August 2018.

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Results of Operations

Comparison of Years Ended December 31, 2018 and 2017

 

IN MILLIONS, except per share data
For the Year Ended December 31,	2018			2017			$ Change 2018 vs. 2017			% Change 2018 vs. 2017
Revenue:
Colocation rent	$	684.7		$	573.8		$	110.9		19.3	%
Metered power reimbursements	104.0			70.3			33.7			47.9	%
Equipment sales	15.3			12.4			2.9			23.4	%
Other revenue	17.4			15.5			1.9			12.3	%
Total revenue	821.4			672.0			149.4			22.2	%
Operating expenses:
Property operating expenses	292.4			235.1			57.3			24.4	%
Sales and marketing	19.6			17.0			2.6			15.3	%
General and administrative	80.6			67.0			13.6			20.3	%
Depreciation and amortization	334.1			258.9			75.2			29.0	%
Transaction, acquisition, integration and other related expenses	5.0			11.9			(6.9		)	(58.0	)%
Impairment losses	—			58.0			(58.0		)	n/m
Total operating expenses	731.7			647.9			83.8			12.9	%
Operating income	89.7			24.1			65.6			n/m
Interest expense	(94.7		)	(68.1		)	(26.6		)	39.1	%
Unrealized gain on marketable equity investment	9.9			—			9.9			n/m
Loss on early extinguishment of debt	(3.1		)	(36.5		)	33.4			(91.5	)%
Net income (loss) before income taxes	1.8			(80.5		)	82.3			n/m
Income tax expense	(0.6		)	(3.0		)	2.4			(80.0	)%
Net income (loss)	$	1.2		$	(83.5	)	$	84.7		n/m
Operating gross margin	10.9		%	3.6		%
Capital expenditures *:
Asset acquisitions, primarily real estate, net of cash acquired	$	462.8		$	492.3		$	(29.5	)	(6.0	)%
Investment in real estate	855.2			910.1			(54.9		)	(6.0	)%
Recurring maintenance capital	10.5			4.4			6.1			n/m
Total	$	1,328.5		$	1,406.8		$	(78.3	)	(5.6	)%
Metrics information:
CSF*	3,819,000			3,267,000			552,000			17	%
Leased rate*	88		%	83		%
Income (loss) per share - basic and diluted	$	—		$	(0.95	)
Dividends declared per share	$	1.84		$	1.68

* See “Key Operating Metrics” above for a definition of capital expenditures, CSF and leased rate.

Revenue

For the year ended December 31, 2018, revenue was $821.4 million, an increase of $149.4 million, or 22%, compared to $672.0 million for the year ended December 31, 2017. Fluctuations in revenue are dependent upon our ability to maintain our existing

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revenue base, sell new capacity, and maintain or increase rental rates at our properties. Rent churn of 5.0% for the year ended December 31, 2018 increased by 1.1% as compared to the 3.9% for the year ended December 31, 2017. Colocation square feet increased 17% for the year ended December 31, 2018 as compared to the year ended December 31, 2017. Leased CSF as of December 31, 2018 was 88%, a 5% increase as compared to 83% as of December 31, 2017. The occupancy percentage increase is primarily related to data centers in the lease-up stage that moved into stabilized properties (which include data halls that have been in service for at least 24 months or are at least 85% leased) during the year ended December 31, 2018. The properties are located in Austin, Houston, Northern Virginia, Phoenix and San Antonio.

The revenue increase of $149.4 million in 2018, as compared to 2017 is primarily due to the following:

• $144.2 million increase in revenue from existing and new customers including $96.9 million in colocation rent revenue, $28.3 million in metered power rent reimbursements and $6.8 million in interconnection revenue,

• $27.7 million increase as a result of the timing of acquisitions for the year ended December 31, 2018, as compared to the year ended December 31, 2017, as we benefited in 2018 from a full year of revenue related to the acquisition of two data centers completed in February 2017 and the acquisition of Zenium which closed in August 2018 (see Note 7, Acquisitions and Purchases of Fixed Assets, for further information regarding acquisitions), and

• offset in part by a $23.1 million decrease as a result of the increase of 1.1 percent in churn.

Operating Expenses

Property operating expenses

For the year ended December 31, 2018, property operating expenses were $292.4 million, an increase of $57.3 million, or 24%, compared to $235.1 million for the year ended December 31, 2017 primarily due to the following:

• $9.9 million increase in property operating expenses as a result of the timing of acquisitions for the year ended December 31, 2018, as compared to the year ended December 31, 2017, due to the Sentinel acquisition completed in February 2017 and the acquisition of Zenium which closed in August 2018.

• $41.8 million increase primarily due to electricity, repairs and maintenance, and security primarily due to our increased NRSF, higher utility rates, and power usage.

• $2.6 million increase in equipment cost of sales for the year ended December 31, 2018,

• $5.7 million increase in personnel, property taxes and other operating expenses, primarily related to personnel supporting our additional CSF deployed and

• offset in part by a $2.7 million decrease in rental expense due to the expiration of two leased facilities in 2018.

Sales and marketing

For the year ended December 31, 2018, sales and marketing expenses were $19.6 million, an increase of $2.6 million, or 15%, compared to $17.0 million for the year ended December 31, 2017 primarily related to transition costs of $1.6 million related to increases in sales relocation costs for our new Seattle office and payroll-related costs of $0.8 million.

General and administrative

For the year ended December 31, 2018, general and administrative expenses were $80.6 million, an increase of $13.6 million, or 20%, compared to $67.0 million for the year ended December 31, 2017 primarily due to the following:

• $2.9 million increase in 2018 compared to 2017 as a result of the acquisitions of Sentinel and Zenium discussed previously,

• $10.7 million increase in 2018 compared to 2017 due to increases of $6.0 million in personnel expenses and $2.3 million in legal and professional fees associated with implementing new accounting standards, new European privacy regulatory compliance and related system implementation costs, IT license support and legal fees.

Depreciation and amortization

For the year ended December 31, 2018, depreciation and amortization expense was $334.1 million, an increase of $75.2 million, or 29%, compared to $258.9 million for the year ended December 31, 2017. The acquisition of Sentinel and Zenium resulted in an increase in depreciation and amortization expense of $23.7 million for the year ended December 31, 2018. The remaining increase was primarily driven by assets that were placed in service in 2018. Since December 31, 2017, approximately $829.7 million of new data center assets have been placed in service. Depreciation and amortization expense is expected to increase in future periods as we acquire and develop new properties and expand our existing data center facilities.

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Transaction, acquisition, integration and other related expenses

For the year ended December 31, 2018, the Company incurred costs of $5.0 million primarily related to diligence efforts on certain targeted acquisitions. For the year ended December 31, 2017, the Company incurred costs of $11.9 million primarily related to diligence efforts on certain targeted acquisitions and costs incurred for integration of acquisitions.

Impairment losses

There were no impairment losses for the year ended December 31, 2018. For the year ended December 31, 2017, the Company recognized impairments of $58.0 million which includes the impairment loss of $54.4 million for our leased data center facilities in the Connecticut markets and $3.6 million related to our leased facility in Singapore.

Non-Operating Income and Expenses

Interest expense

For the year ended December 31, 2018, interest expense was $94.7 million, an increase of $26.6 million, or 39%, as compared to $68.1 million for the year ended December 31, 2017. The increase in interest expense was partially offset by an increase in our capitalized interest from the year ended December 31, 2017 of $7.4 million due to increased development activity. The gross increase in interest expense was primarily a result of the increase in the average principal balances of senior notes outstanding of $800.0 million for the year ended December 31, 2017, versus $1.2 billion during the year ended December 31, 2018. We anticipate drawing on our $1.7 Billion Revolving Credit Facility to fund, in part, capital investments in data centers, including acquisitions. Accordingly, we anticipate our interest expense to increase in future periods.

Unrealized gain on marketable equity investment

For the year ended December 31, 2018, the unrealized gain on our marketable equity investment in GDS was $9.9 million, primarily as a result of an appreciation in GDS's share price since December 31, 2017.

Loss on early extinguishment of debt

For the year ended December 31, 2018, loss on early extinguishment of debt was $3.1 million, primarily due to the Company's entering into the $3.0 Billion Credit Facility and fully retiring the then-existing facility. For the year ended December 31, 2017, loss on early extinguishment of debt was $36.5 million, primarily due to costs associated with the repurchase of the $474.8 million in aggregate face value of our 2022 Notes ($525.0 million of 6.375% senior notes due 2022 (the "2022 Notes")).

Income tax expense

For the year ended December 31, 2018, income tax expense was $0.6 million, a decrease of $2.4 million, as compared to $3.0 million for the year ended December 31, 2017, primarily related to deferred tax benefits associated with our assets acquired in the Zenium acquisition.

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Significant Balance Sheet Fluctuations

The table below relates to significant fluctuations in certain line items of our Consolidated Balance Sheets from December 31, 2018 to December 31, 2019 (in millions):

	December 31, 2019		December 31, 2018		Difference
Total investment in real estate, net	$	4,710.3	$	4,293.0	$	417.3
Equity investments	135.1		198.1		(63.0		)
Operating lease right-of-use ("ROU") assets, net	161.9		—		161.9
$1.7 Billion Revolving Credit Facility	615.0		143.0		472.0
Term Loans	1,100.0		1,300.0		(200.0		)
Finance lease liabilities	31.8		156.7		(124.9		)
Operating lease liabilities	195.8		—		195.8
Deferred tax liability	60.5		68.9		(8.4		)
Additional paid in capital	3,202.0		2,837.4		364.6

The increase in total investment in real estate, net was primarily due to the continued development of data centers in Amsterdam, Austin, Dallas, Frankfurt, London, Northern Virginia, Phoenix, Raleigh-Durham, San Antonio and Santa Clara, less depreciation expense of $364.4 million. Land purchases for future development were made in Dublin, San Antonio, Santa Clara and Council Bluffs.

The decrease in equity investments was primarily due to the sale of 5.7 million GDS ADSs in April 2019. We continue to hold approximately 2.3 million GDS ADSs. This equity investment had a fair value of $118.7 million as of December 31, 2019. We did not receive any distributions related to our equity investment during the years ended December 31, 2019 or 2018.

The increase in operating lease ROU assets is due to the new accounting standard for leases. For more information, see Note 4, Recently Issued Accounting Standards and Note 6, Leases - As a Lessee.

The increase in borrowing under the $1.7 Billion Revolving Credit Facility was primarily due to borrowing under the U.S. and EUR revolvers to fund development and operations.

The decrease in the term loans was primarily due the repayment of $200.0 million of the 2023 Term Loan using the proceeds of the sale of GDS ADSs.

The decrease in finance lease liabilities and the increase in operating lease liabilities are due to the new accounting standard for leases. For more information, see Note 4, Recently Issued Accounting Standards and Note 6, Leases - As a Lessee.

The decrease in deferred tax liability is primarily related to the decrease in deferred tax liability related to the acquisition of Zenium in August 2018. For more information, see Note 19, Income Taxes.

The increase in additional paid in capital was primarily due to proceeds from sales of the Company's common stock pursuant to the New 2018 ATM Stock Offering Program.

Investing Activities

For the year ended December 31, 2019, capital expenditures were $876.4 million primarily related to the acquisition of land for future development and continued development in key markets, primarily in Amsterdam, Austin, Dallas, Frankfurt, London, Northern Virginia, Phoenix and Raleigh-Durham. Included in capital expenditures are land purchases of $54.7 million in Santa Clara, San Antonio, Dublin and Council Bluffs for future development. We also made a capital contribution of approximately $3.8 million to our investment in ODATA Brasil S.A. and ODATA Colombia S.A.S (collectively "ODATA").

For the year ended December 31, 2018, capital expenditures were $1,328.5 million. Our capital expenditures for 2018 included the acquisition of Zenium for $462.8 million. In addition, 2018 capital expenditures included $865.7 million related primarily to the continued development in key markets, primarily Chicago, Dallas, Northern Virginia and Somerset. We also made an equity investment in ODATA for $12.6 million.

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For the year ended December 31, 2017, capital expenditures were $1,406.8 million, including the purchase price of the Sentinel Properties on February 28, 2017 for $492.3 million. Other capital expenditures for the year ended December 31, 2017 related primarily to development projects underway in Chicago, Cincinnati, Dallas, Northern Virginia, Phoenix and San Antonio; and the purchase of land parcels in Allen, Texas, Atlanta, Georgia and Quincy, Washington for future development for approximately $20.2 million.

Key Performance Indicators - Non-GAAP Financial Measures

In addition to amounts presented in accordance with GAAP, we also present certain supplemental non-GAAP financial measures related to our performance. These non-GAAP financial measures should not be construed as being more important than, or a substitute for, comparable GAAP financial measures. In compliance with SEC requirements, our non-GAAP financial measures presented herein are reconciled to net income (loss), the most directly comparable GAAP financial measure. Neither the SEC nor any regulatory body has passed judgment on these non-GAAP measurements.

Funds from Operations and Normalized Funds from Operations

We use funds from operations ("FFO") and normalized funds from operations ("Normalized FFO"), which are non-GAAP financial measures commonly used in the REIT industry, as supplemental performance measures. We use FFO and Normalized FFO as supplemental performance measures because, when compared period over period, they capture trends in occupancy rates, rental rates and operating costs. We also believe that, as widely recognized measures of the performance of REITs, FFO and Normalized FFO are used by investors as a basis to evaluate REITs.

We calculate FFO as net income (loss) computed in accordance with GAAP before real estate depreciation and amortization and impairment losses and loss on disposal of assets. While it is consistent with the definition of FFO promulgated by the National Association of Real Estate Investment Trusts ("NAREIT"), our computation of FFO may differ from the methodology for calculating FFO used by other REITs. Accordingly, our FFO may not be comparable to others.

We calculate Normalized FFO as FFO plus loss on early extinguishment of debt; gain on marketable equity investment; foreign currency and derivative losses, net; new accounting standards and regulatory compliance and the related system implementation costs; amortization of tradenames; transaction, acquisition, integration and other related expenses; severance and management transition costs; legal claim costs and other items as appropriate. We believe our Normalized FFO calculation provides a comparable measure between different periods. Other REITs may not calculate Normalized FFO in the same manner. Accordingly, our Normalized FFO may not be comparable to others.

In addition, because FFO and Normalized FFO exclude real estate depreciation and amortization, and capture neither the changes in the value of our properties that result from use or from market conditions, nor the level of capital expenditures and leasing commissions necessary to maintain the operating performance of our properties, all of which have real economic effect and could materially impact our results from operations, the utility of FFO and Normalized FFO as measures of our performance is limited. Therefore, FFO and Normalized FFO should be considered only as supplements to net income (loss) presented in accordance with GAAP as measures of our performance. FFO and Normalized FFO should not be used as measures of our liquidity or as indicative of funds available to fund our cash needs, including our ability to make distributions. FFO and Normalized FFO also should not be used as supplements to or substitutes for cash flow from operating activities computed in accordance with GAAP.

On January 1, 2019, we adopted the new accounting standard with respect to leases, see Note 3, Summary of Significant Accounting Policies and Note 6, Leases - As a Lessee, to our audited consolidated financial statements for additional information. We have adopted the new standard using the modified retrospective transition method, where financial statement presentations prior to the date of adoption are not restated. Accordingly, all information related to periods prior to 2019 have not been adjusted, including non-GAAP measurements.

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The following table reflects the reconciliation of GAAP net income (loss) to FFO and Normalized FFO for the years ended December 31, 2019, 2018 and 2017 (amounts in millions):

	Year Ended
	December 31,
	2019			2018			2017
Net income (loss)	$	41.4		$	1.2		$	(83.5	)
Real estate depreciation and amortization(1)	408.5			325.5			250.6
Impairment losses and loss on disposal of assets(1)	1.1			—			58.0
Funds from Operations ("FFO") - NAREIT defined	$	451.0		$	326.7		$	225.1
Loss on early extinguishment of debt	71.8			3.1			36.5
Gain on marketable equity investment	(132.3		)	(9.9		)	—
Foreign currency and derivative losses, net	7.5			—			—
New accounting standards and regulatory compliance and the related system implementation costs	0.8			3.0			2.4
Amortization of tradenames(1)	1.3			1.7			1.4
Transaction, acquisition, integration and other related expenses(1)	8.4			4.8			11.9
Severance and management transition costs	(0.6		)	2.3			0.5
Legal claim costs	1.1			0.6			1.1
Normalized Funds from Operations ("Normalized FFO")	$	409.0		$	332.3		$	278.9

(1) Reflects certain reclassifications of previously reported amortization of customer intangibles and transaction costs to conform with the current presentation.

Net Operating Income

We use Net Operating Income ("NOI"), which is a non-GAAP financial measure commonly used in the REIT industry, as a supplemental performance measure. We use NOI as a supplemental performance measure because, when compared period over period, it captures trends in occupancy rates, rental rates and operating expenses. We also believe that, as a widely recognized measure of the performance of REITs, NOI is used by investors as a basis to evaluate REITs.

We calculate NOI as net income (loss), adjusted for sales and marketing expenses, general and administrative expenses, depreciation and amortization expenses, transaction, acquisition, integration and other related expenses, interest expense, net, gain on marketable equity investment, loss on early extinguishment of debt, impairment losses, foreign currency and derivative losses, net, other expense, income tax (benefit) expense and other items as appropriate. Amortization of deferred leasing costs is presented in depreciation and amortization expenses, which is excluded from NOI. Sales and marketing expenses are not property-specific, rather these expenses support our entire portfolio. As a result, we have excluded these sales and marketing expenses from our NOI calculation, consistent with the treatment of general and administrative expenses, which also support our entire portfolio. Because the calculation of NOI excludes various expenses, the utility of NOI as a measure of our performance is limited. Other REITs may not calculate NOI in the same manner. Accordingly, our NOI may not be comparable to others. Therefore, NOI should be considered only as a supplement to net income (loss) presented in accordance with GAAP as a measure of our performance. NOI should not be used as a measure of our liquidity or as indicative of funds available to fund our cash needs, including our ability to make distributions. NOI also should not be used as a supplement to or substitute for cash flow from operating activities computed in accordance with GAAP.

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The following table reflects the reconciliation of Net Income (Loss) to NOI for the years ended December 31, 2019, 2018 and 2017:

	Year Ended
	December 31,
	2019			2018			2017
Net Income (Loss)	$	41.4		$	1.2		$	(83.5	)
Sales and marketing expenses	20.2			19.6			17.0
General and administrative expenses	83.5			80.6			67.0
Depreciation and amortization expenses	417.7			334.1			258.9
Transaction, acquisition, integration and other related expenses	8.8			5.0			11.9
Interest expense, net	82.0			94.7			68.1
Gain on marketable equity investment	(132.3		)	(9.9		)	—
Loss on early extinguishment of debt	71.8			3.1			36.5
Impairment losses	0.7			—			58.0
Foreign currency and derivative losses, net	7.5			—			—
Other expense	0.3			—			—
Income tax (benefit) expense	(3.7		)	0.6			3.0
Net Operating Income	$	597.9		$	529.0		$	436.9

Financial Condition, Liquidity and Capital Resources and Material Terms of Our Indebtedness

Liquidity and Capital Resources

We are required to distribute at least 90% of our REIT taxable income, determined without regard to the dividends paid deduction and excluding any net capital gains, to our stockholders on an annual basis in order to maintain our status as a REIT for federal income tax purposes. Accordingly, we intend to make, but are not contractually bound to make, regular quarterly distributions to common stockholders from cash flows from operating activities. All such distributions are at the discretion of our board of directors.

We have an effective shelf registration statement that allows us to offer for sale unspecified amounts of various classes of equity and debt securities and warrants. As circumstances arise, we may issue debt, equity and/or warrants from time to time on an opportunistic basis, dependent upon market conditions and available pricing.

During the fourth quarter of 2018, the Board authorized us to enter into sales agreements pursuant to which the Company may issue and sell from time to time shares of its common stock having an aggregate sales price of up to $750.0 million (the “New 2018 ATM Stock Offering Program”). The New 2018 ATM Stock Offering Program replaced our prior at-the-market stock offering program. For the year ended December 31, 2019, we sold approximately 6.5 million shares of our common stock under the New 2018 ATM Stock Offering Program, generating net proceeds of approximately $355.6 million, net of sales commissions, underwriting discounts and estimated expenses of $4.3 million. As of December 31, 2019, there was approximately $290.1 million under the New 2018 ATM Stock Offering Program available for future offerings.

During the fourth quarter of 2019, CyrusOne Inc. entered into a forward sale agreement with a financial institution acting as forward purchaser under the New 2018 ATM Stock Offering Program with respect to 1.6 million shares of its common stock at an initial forward price of $61.67 per share. The Company has twelve months to settle the forward sale agreement. The Company did not receive any proceeds from the sale of its common shares by the forward purchasers. The Company currently expects to fully physically settle the forward equity sale agreement and receive cash proceeds upon one or more settlement dates at the Company’s discretion, prior to the final settlement dates under the forward equity sale agreement in November 2020, in which case we expect to receive aggregate net cash proceeds at settlement equal to the number of shares specified in such forward equity sale agreement multiplied by the relevant forward price per share. The weighted average forward sale price that we expect to receive upon physical settlement of the agreement will be subject to adjustment for (i) a floating interest rate factor equal to a specified daily rate less a spread, (ii) the forward purchasers’ stock borrowing costs and (iii) scheduled dividends during the term of the agreement. We have not settled any portion of this forward equity sale agreement as of the date of this filing.

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Our total common stock issuance for the year ended December 31, 2019 was $357.2 million which included $355.6 million under the New 2018 ATM Stock Offering Program and $1.6 million related to employee stock purchases and stock options exercised.

As of December 31, 2019, the total number of outstanding shares of common stock was approximately 114.8 million.

Short-term Liquidity

Our short-term liquidity requirements primarily consist of operating, sales and marketing, and general and administrative expenses, dividend payments and recurring capital expenditures for our data center properties. We generally expect to meet these requirements from our cash flow from operations, cash balances and availability under our $1.7 Billion Revolving Credit Facility. For the year ended December 31, 2019, our cash provided by operating activities was $365.7 million. This was more than our dividend payment for the year ended December 31, 2019 of $210.4 million.

Available capacity under the $3.0 Billion Credit Facility as of December 31, 2019 was $1,076.8 million related to the $1.7 Billion Revolving Credit Facility. Total liquidity as of December 31, 2019 was approximately $1,153.2 million, which included the $1,076.8 million available revolver capacity and cash and cash equivalents of $76.4 million. For the year ended December 31, 2019, we had borrowings of $615.0 million under the $1.7 Billion Revolving Credit Facility. For the year ended December 31, 2018, we had borrowings of $143.0 million under the $1.7 Billion Revolving Credit Facility.

In January 2020, CyrusOne LP and CyrusOne Finance Corp. closed their previously announced offering of €500.0 million aggregate principal amount of 1.450% Senior Notes due 2027. See Note 23, Subsequent Event.

Long-term Liquidity

Our long-term liquidity requirements primarily consist of our capital expenditures for the development and acquisition of our data centers. For the year ended December 31, 2019, our cash capital expenditures were $876.4 million. Our capital expenditures are primarily discretionary, excluding leases under contract, and have been utilized to expand our existing data center properties, acquire or construct new facilities. We intend to continue to develop and expand properties and are prepared to commit additional resources to support this growth. We expect our total estimated capital expenditures for 2020 to be between $750.0 million and $850.0 million. We expect to meet our long-term liquidity requirements, including potential acquisitions, from cash and cash equivalents, cash flows from our operations, issuances of debt and equity securities, and borrowings under our $1.7 Billion Revolving Credit Facility.

While we regularly monitor commodity and labor pricing trends related to our data center development capital expenditures, a large proportion of our current development project costs are under firm price commitments. Accordingly, while we have experienced price increases in certain selective materials due to recent international trade negotiations and actions, we currently do not anticipate any material adverse effect on our overall development costs.

As of December 31, 2019, all of our outstanding debt matures from March 2023 to November 2029, with a weighted average of 5.2 years to maturity. We expect to refinance these debts at or before their maturities, or retire the debt from the sources described in this section. Our interest rate mix was 51% fixed and 49% floating.

In addition to the sources of capital described herein, we have access to other potential sources of capital including mortgage financing, property dispositions and proceeds from contributions and partial sale of properties into joint ventures.

Material Terms of Our Indebtedness

See Note 12, Debt, for the material terms of our indebtedness under the $3.0 Billion Credit Facility and our 2024 Notes and 2029 Notes.

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Cash Flows

Our primary sources of cash during 2019 were earnings from our operations, net proceeds from our $3.0 Billion Credit Facility, and net proceeds from the issuances of common stock, 2024 Notes and 2029 Notes. Our primary uses of cash during 2019 were capital expenditures for the development of real estate, funding our operations and payment of dividends.

The following table summarizes our cash flows for the years ended December 31, 2019, 2018 and 2017.

IN MILLIONS
For the year ended December 31,	2019			2018			2017
Cash provided by operations	$	365.7		$	309.3		$	289.5
Cash used in investing activities	(679.9		)	(1,341.1		)	(1,506.8		)
Cash provided by financing activities	324.8			944.7			1,354.6

Comparison of Years Ended December 31, 2019 and 2018

Cash provided by operating activities for the year ended December 31, 2019 was $365.7 million compared to $309.3 million for the year ended December 31, 2018. The increase of $56.4 million was due to the following:

• Increases in net cash provided by operating activities of $98.5 million primarily due to the following:

◦ $68.9 million increase due to a $159.9 million increase in revenue offset in part by a $91.0 million increase in property operating expenses;

◦ $10.7 million decrease in prepaid expenses;

◦ $3.1 million decrease in deposits;

◦ $2.9 million increase in other liabilities; and

◦ $12.9 million decrease in all other payments over the corresponding prior year period, partially offset by,

• Decreases in net cash provided by operating activities of $42.1 million primarily due to the following:

◦ $18.9 million decrease in deferred revenue and prepaid rents;

◦ $7.6 million of increased interest payments;

◦ $6.0 million increase in rent and other receivables;

◦ $5.7 million increased property tax payments;

◦ $3.8 million decrease in accounts payable and accrued expenses; and

◦ $0.1 million increase in bonus payments.

Cash used in investing activities for the year ended December 31, 2019 was $679.9 million compared to $1.3 billion for the year ended December 31, 2018. Substantially all of our investing activity for both periods related to our development and acquisition activities. Our capital expenditures for 2019 of $876.4 million primarily related to the acquisition of land for future development and continued development in key markets, primarily in Amsterdam, Austin, Dallas, Frankfurt, London, Northern Virginia, Phoenix and Raleigh-Durham. Included in capital expenditures are land purchases of $54.7 million in Santa Clara, San Antonio, Dublin, and Council Bluffs for future development. We also made a capital contribution of approximately $3.8 million to our ODATA investment. These investment outflows were partially offset by proceeds of $199.0 million from the sale of 5.7 million ADSs from our GDS investment and proceeds from the sale of real estate assets of $1.3 million. Our capital expenditures for 2018 included the acquisition of Zenium for $462.8 million. In addition, 2018 capital expenditures included $865.7 million related primarily to the continued development in key markets, primarily Chicago, Northern Virginia, Dallas and Somerset.

Cash provided by financing activities for the year ended December 31, 2019 was $324.8 million compared to $944.7 million for the year ended December 31, 2018. The decrease of $619.9 million was due to the following:

• $1,300.0 million decrease in proceeds from the unsecured term loan. In 2018, $1,300.0 million was borrowed from the new $3.0 billion credit facility to fully retire the previous credit facility. There were no term loan proceeds during 2019;

• $1,200.0 repayment of the Old 2024 Notes and Old 2027 Notes in December 2019;

• $342.4 million decrease in proceeds from the issuance of common stock primarily due to the New 2018 ATM Stock Offering Program. The Company issued 6.5 million shares in 2019 and 12.2 million shares in 2018 under its at-the-market stock offering programs;

• $72.0 million increase in the payment of debt extinguishment costs for the 2024 Notes and 2027 Notes;

• $31.6 million decrease in proceeds from the revolving credit facility;

• $29.3 million increase in dividend payments due to the increase in the number of common shares outstanding and dividend rate;

• $9.4 million increase in the payment of deferred financing costs related to the 2024 Notes and 2029 Notes, and

• $4.1 million increase in tax payments on the exercise of equity awards, partially offset by,

• $1,197.4 million increase in net proceeds from the issuance of the 2024 Notes and 2029 Notes;

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• $700.0 million decrease in payments of unsecured term loan. In 2019, $200.0 million in proceeds from the sale of our equity investment in GDS were used to pay off a portion of the 2023 Term Loan. In 2018, the $900.0 million balance of the previous credit facility was fully retired with proceeds from the new $3.0 Billion Credit Facility;

• $464.9 million decrease in the payments on the revolving credit facility; and

• $6.6 million decrease in payments on finance lease obligations.

Comparison of Years Ended December 31, 2018 and 2017

Cash provided by operating activities for the year ended December 31, 2018 was $309.3 million compared to $289.5 million for the year ended December 31, 2017, an increase of $19.8 million. The increase was primarily due to an increase in operating income as explained above, partially offset by the increase in interest payments of $46.6 million related to debt, over the corresponding prior year period, and to a lesser extent, payments of annual property taxes and payment of our year-end bonus.

Cash used in investing activities for the year ended December 31, 2018 was $1,341.1 million compared to $1,506.8 million for the year ended December 31, 2017. Substantially all of our investing activity for both periods was related to our development and acquisition activities. Our capital expenditures for 2018 included the acquisition of Zenium for $462.8 million. In addition, 2018 capital expenditures included $865.7 million related primarily to the continued development in key markets, primarily Chicago, Dallas, Northern Virginia and Somerset. We also made an equity investment in ODATA for $12.6 million.

Our capital expenditures for 2017 included the purchase of the Sentinel Properties for $492.3 million. Capital expenditure for 2017 of $914.5 million related primarily to development projects underway in Chicago, Cincinnati, Dallas, Northern Virginia, Phoenix and San Antonio; and the purchase of 66 acres in Allen, Texas, 44 acres outside of Atlanta, Georgia and 48 acres in Quincy, Washington. In addition, we made an investment in GDS of $100.0 million.

Cash provided by financing activities for the year ended December 31, 2018 was $944.7 million compared to $1,354.6 million for the year ended December 31, 2017. During the year ended December 31, 2018, cash provided by financing activities was due to the proceeds from the issuance of debt of $1,845.3 million, the issuance of common stock, net of issuance costs, of $699.6 million and net borrowings under our credit facility of $143.0 million. Cash used in financing activities during the year ended December 31, 2018 primarily related to payments on debt of $1,547.4 million, dividends paid to stockholders of $181.1 million and other items of $14.7 million. Our board of directors increased our dividend rate from $0.38 per share to $0.42 per share effective in the first quarter of 2017 and increased our dividend to $0.46 per share effective in the first quarter of 2018.

During the year ended December 31, 2017, cash provided by financing activities was due to proceeds from the issuance of senior notes of $1,217.8 million, issuance of common stock, net of issuance costs, of $705.7 million and net borrowings under the credit facility of $115.0 million. Cash used in financing activities during the year ended December 31, 2017 was due to the repurchase and redemption of the 2022 Notes of $474.8 million and payment of debt extinguishment of $30.4 million, payment of debt issuance costs relating to the issuance of the Old 2024 Notes and the Old 2027 Notes of $19.0 million, dividends paid to stockholders of $145.7 million, tax payments upon the exercise of equity awards of $6.9 million and other items of $7.1 million.

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Contractual Obligations

The following contractual obligations table summarizes our contractual obligations as of December 31, 2019:

IN MILLIONS	Total		< 1 Year		1-3 Years		3-5 years		Thereafter
2024 Notes(1)	$	600.0	$	—	$	—	$	600.0	$	—
2029 Notes(1)	600.0		—		—		—		600.0
Revolving credit facility	615.0		—		615.0		—		—
Term loans(1)	1,100.0		—		—		800.0		300.0
Finance lease liabilities	31.8		3.4		4.7		1.5		22.2
Interest payments on senior notes, credit agreement, finance lease liabilities and operating lease liabilities(2)	573.6		104.0		202.5		117.7		149.4
Construction commitments and purchase obligations(3)	307.3		304.1		3.2		—		—
Operating lease liabilities and other liabilities(4)	196.0		15.3		30.6		21.7		128.4
Total(5)	$	4,023.7	$	426.8	$	856.0	$	1,540.9	$	1,200.0

 

(1) Represents the principal portion of the 2024 Notes, 2029 Notes and Term Loans.

(2) Includes contractual interest payments on the 2024 Notes, 2029 Notes, $3.0 Billion Credit Facility, finance lease liabilities and operating lease liabilities assuming no early payment of debt in future periods and the exercise of the one-year extension option on the $1.7 Billion Revolving Credit Facility.

(3) We have issued purchase orders for construction related activities. CyrusOne has non-cancellable purchase commitments related to certain services and contracts related to construction of data center facilities and equipment. These agreements range from one to two years and provide for payments for early termination or require minimum payments for the remaining term.

(4) Represents operating lease liabilities of $195.8 million for leased data centers where we are deemed the accounting owner, and asset retirement obligations of $0.2 million.

(5) Employment contracts have been excluded from this table for the Company's named executive officers as the Company's definitive proxy statement and other filings with the SEC contain more information with respect to those agreements. All other employees are subject to at-will employment.

The contractual obligations table is presented as of December 31, 2019. The amount of these obligations can be expected to change over time as new contracts are initiated and existing contracts are completed, terminated or modified.

Contingencies

We are periodically involved in litigation, claims and disputes. Liabilities are established for these claims when losses associated with these matters are judged to be probable and the loss can be reasonably estimated. Based on information currently available, consultation with counsel and established reserves, management believes the outcome of all claims will not individually, nor in the aggregate, have a material effect on our financial position, results of operations or cash flows. For the year ended December 31, 2019, we were not involved in any material lawsuits that required us to recognize an expense.

Off-Balance Sheet Arrangements

Indemnification

During the normal course of business, we make certain indemnities, commitments and guarantees under which we may be required to make payments in relation to certain transactions. These include (i) intellectual property indemnities to customers in connection with the use, sale and/or license of products and services, (ii) indemnities to vendors and service providers pertaining to claims based on our negligence or willful misconduct and (iii) indemnities involving the representations and warranties in certain contracts. In addition, we have made contractual commitments to several employees providing for payments upon the occurrence of certain prescribed events. The majority of these indemnities, commitments and guarantees do not provide for any limitation on the maximum potential for future payments that we could be obligated to make.

Also as a part of our normal course of business we procure certain data center equipment (generally generators and power distribution units) and electricity power under purchase commitments, where we would be required to purchase certain minimum volumes. In general, we expect to manage these contracts such that the committed volume levels are below our current requirements and at prices that are below current spot market prices. However, if our requirements were to decrease or the spot market prices were to decrease, we could be obligated to complete the remaining minimum purchase commitments, holding the excess equipment for future development or disposing at then current prices. As of December 31, 2019, our aggregate commitments under these contracts is approximately $89.9 million.

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ITEM 7A.    Quantitative and Qualitative Disclosures About Market Risk

Interest Rate Risk

We have exposure to interest rate risk, arising from variable-rate borrowings under our $3.0 Billion Credit Facility and our fixed-rate long-term debt.

Our interest rate risk management objectives are to limit the impact of interest rate changes on earnings and cash flows and to lower overall borrowing costs. To achieve the financing objectives, we borrow primarily at fixed rates or variable rates with what we believe are the lowest margins available. With regard to variable rate financing, we manage interest rate cash flow risk by continually identifying and monitoring changes in interest rate exposures that may adversely impact expected future cash flows. We have not entered into, and do not plan to enter into, financial instruments for trading or speculative purposes.

As of December 31, 2019, we had approximately $1.2 billion of contractually outstanding consolidated debt at a weighted average fixed interest rate of approximately 2.66% and $1.7 billion of amounts outstanding under credit facilities with a weighted average variable interest rate of monthly LIBOR plus 1.29%. As of December 31, 2018, we had approximately $1.2 billion of contractually outstanding consolidated debt at a weighted average fixed interest rate of approximately 5.16% and $1.4 billion of amounts outstanding under credit facilities with a weighted average variable interest rate of monthly LIBOR plus 1.21%. Monthly LIBOR as of December 31, 2019 and 2018 was 1.80% and 2.53%, respectively. In August 2019, we entered into swaps on $500.0 million of our 2023 Term Loan variable interest rate of 1-month USD LIBOR in exchange for 1-month EUR LIBOR which was 0.0% as of December 31, 2019.

Interest rate fluctuations will generally not affect our future earnings or cash flows on our fixed rate debt unless such instruments are traded or are otherwise terminated prior to maturity. However, interest rate changes will affect the fair value of our fixed rate instruments.

Conversely, movements in interest rates on variable rate debt would change our future earnings and cash flows, but not significantly affect the fair value of those instruments. We are exposed to interest rate changes primarily as a result of our variable rate debt we incur on our senior unsecured credit agreement and our consolidated cash investments. As of December 31, 2019 and 2018, our floating rate debt outstanding was $1,715.0 million and $1,443.0 million, respectively. We quantify our exposure to interest rate risk based on how changes in interest rates affect our net income. We consider changes in the 30-day LIBOR rate to be most indicative of our interest rate exposure as it is a function of the base rate for our credit facilities. We consider increases of 0.5% to 2.0% in the 30-day LIBOR rate to be reflective of reasonable changes we may experience in the current interest rate environment. The table below reflects the annual consolidated effect of an increase in the 30-day LIBOR to our net income related to our significant variable interest rate exposures as of December 31, 2019 and 2018 (amounts in millions, where positive amounts reflect an increase in net income and bracketed amounts reflect a decrease in net income): 

Variable rate credit facilities expense:

	2.0%			1.5%			1.0%			0.5%
As of December 31, 2019	$	(34.3	)	$	(25.7	)	$	(17.2	)	$	(8.6	)
As of December 31, 2018	$	(28.9	)	$	(21.6	)	$	(14.4	)	$	(7.2	)

Floating rate interest income was $1.3 million for the year ended December 31, 2019, and not significant for the year ended December 31, 2018.

There is no assurance that we would realize such income or expense as such changes in interest rates could alter our asset or liability positions or strategies in response to such changes. Also, where variable rate debt is used to finance development projects, the cost of the development is also impacted. If these costs exceed budgeted interest reserves, we may be required to fund the excess out of other capital sources. The table above reflects interest expense prior to any adjustments for capitalized interest related to developments.

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The following table sets forth the carrying value and fair value face amounts, maturity date and average interest rates at December 31, 2019, for our fixed-rate and variable-rate debt, excluding capital leases and other financing arrangements: 

IN MILLIONS	2020	2021	2022	2023			2024			Thereafter			Total Carrying Value		Total Fair Value
Fixed-rate debt (2024 Notes)	—	—	—	—			$	599.2		—			$	599.2	$	602.1
Average interest rate on fixed-rate debt	—	—	—	—			2.900		%	—
Fixed-rate debt (2029 Notes)	—	—	—	—			—			$	598.2		$	598.2	$	603.1
Average interest rate on fixed-rate debt	—	—	—	—			—			3.450		%
Variable-rate debt (2023 Term Loan)	—	—	—	$	800.0		—			—			$	800.0	$	800.0
Average interest rate on variable-rate debt	—	—	—	3.150		%	—			—
Variable-rate debt (2025 Term Loan)	—	—	—	—			—			$	300.0		$	300.0	$	300.0
Average interest rate on variable-rate debt	—	—	—	—			—			3.450		%
USD loan (2023 Revolving Credit Facility)	—	—	—	$	555.0		—			—			$	555.0	$	555.0
Average interest rate on variable-rate debt	—	—	—	2.970		%	—			—
Euro loan (2023 Revolving Credit Facility)	—	—	—	$	33.6		—			—			$	33.6	$	33.6
Average interest rate on variable-rate debt	—	—	—	1.200		%	—			—
GBP loan (2023 Revolving Credit Facility)	—	—	—	$	26.4		—			—			$	26.4	$	26.4
Average interest rate on variable-rate debt	—	—	—	1.910		%	—			—

The fair values of our 2024 Notes and 2029 Notes as of December 31, 2019, and Old 2024 Notes and Old 2027 Notes as of December 31, 2018 were based on the quoted market prices for these notes, which is considered Level 1 of the fair value hierarchy. The fair value of the GDS equity investment as of December 31, 2019 was based on the quoted market price for the stock which is considered Level 1 of the fair value hierarchy. The carrying value of the $3.0 Billion Revolving Credit Facility, the 2023 Term Loan and the 2025 Term Loan approximates estimated fair value as of December 31, 2019, due to the floating rate nature of the interest rates and the stability of our credit ratings. These fair value measurements are considered Level 3 of the fair value hierarchy.

Interest Rate Swaps

On September 3, 2019, the Company entered into a floating-fixed interest rate swap agreement to convert $300.0 million outstanding of term loan to 1.19% fixed rate debt. The hedge is designed to reduce the Company's exposure to fluctuations in interest rates. We had not entered into any interest rate swaps for the year ended December 31, 2018.

Foreign Currency Risk

As a result of our expansion outside of the United States, including the Zenium acquisition, we have foreign operations in Germany, The Netherlands, United Kingdom, Singapore and the Republic of Ireland that expose us to risk from the effects of exchange rate movements of respective foreign currencies, which may affect future costs and cash flows. Foreign currency risk is the possibility that our results of operations or financial position could be affected by changes in exchange rates. Our exposure to foreign currency primarily relates to our foreign currency denominated in British pound sterling and Euro, included within Total investment in real estate, net, which was $985.1 million and $644.6 million as of December 31, 2019 and 2018, respectively. For the years ended December 31, 2019 and 2018, our foreign currency translation adjustment included within stockholders’ equity was an increase of $11.8 million and a decrease of $10.9 million, respectively.

As a result of our expansion into foreign countries primarily in Europe, our exposure to foreign currency increased in the year ended December 31, 2019 as compared to the year ended December 31, 2018, and is expected to further increase, primarily related to British pound sterling and Euro. We could mitigate future investment and operational foreign currency exposure by borrowing under our $3.0 Billion Credit Facility in the particular foreign currency, subject to availability and applicable borrowing conditions. However, we would expect to incur foreign currency transaction gains and losses, which would impact our consolidated net income, and translation of financial statements from the foreign functional currency to U.S. dollars, which would be included in other comprehensive income or loss and stockholders’ equity. As of December 31, 2019, we have outstanding borrowings under our $1.7 Billion Revolving Credit Facility of $26.4 million which is denominated in British pound sterling and $33.6 million which is denominated in Euros. See Note 12, Debt, for further information.

In 2019, the Company entered into cross-currency swaps whereby the Company pays floating interest rate and receives floating interest rate to hedge the variability of future cash flows attributable to changes in the 1-month USD LIBOR versus EUR LIBOR

70

rates (a pay-floating, receive-floating interest rate swap). As of December 31, 2018, our exposure to foreign currency was not significant, and we had not entered into cross-currency swaps.

As of December 31, 2019, the Company has the following cross-currency contracts:

• EUR/USD contracts to sell $446.8 million and purchase €401.1 million maturing in January 2020 representing a fair value liability of $3.7 million.

• EUR/USD contracts to sell $500.0 million and purchase €450.7 million maturing in March 2023 representing a fair value liability of $7.7 million.

The pay-floating, receive-floating interest rate swap payments are recognized in interest expense, net in the Consolidated Statements of Operations. The Company recognized a $7.5 million loss on cross-currency contracts for the year ended December 31, 2019, which are recognized in Foreign currency and derivative losses, net in the Consolidated Statements of Operations.

Commodity Price Risk

Certain of our operating costs are subject to price fluctuations caused by the volatility of the underlying commodity prices, including electricity used in our data center operations, and building materials, such as steel and copper, used in the construction of our data centers. In addition, the lead time to purchase certain equipment for our data centers is substantial which could result in increased costs for these construction projects. In addition, we have entered into several contracts to purchase electricity. As of December 31, 2019 and December 31, 2018, these contracts represented less than our forecasted usage.

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ITEM 8.    CONSOLIDATED FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

INDEX TO THE CONSOLIDATED FINANCIAL STATEMENTS	Page No.
Reports of Independent Registered Public Accounting Firm	73
Consolidated Financial Statements of CyrusOne Inc.
Consolidated Balance Sheets as of December 31, 2019 and 2018	76
Consolidated Statements of Operations for the years ended December 31, 2019, 2018 and 2017	77
Consolidated Statements of Comprehensive Income (Loss) for the years ended December 31, 2019, 2018 and 2017	78
Consolidated Statements of Equity for the years ended December 31, 2019, 2018 and 2017	79
Consolidated Statements of Cash Flows for the years ended December 31, 2019, 2018 and 2017	80
Notes to Consolidated Financial Statements	81
Note 1 - Description of Business	81
Note 2 - Basis of Presentation	81
Note 3 - Summary of Significant Accounting Policies	81
Note 4 - Recently Issued Accounting Standards	87
Note 5 - Revenue Recognition	89
Note 6 - Leases - As a Lessee	91
Note 7 - Acquisitions and Purchases of Fixed Assets	93
Note 8 - Investment in Real Estate	95
Note 9 - Equity Investments	96
Note 10 - Goodwill, Intangible and Other Long-Lived Assets	97
Note 11 - Other Assets	98
Note 12 - Debt	99
Note 13 - Fair Value of Financial Instruments and Hedging Activities	101
Note 14 - Employee Benefit Plans	104
Note 15 - Income (Loss) Per Share	104
Note 16 - Stockholders' Equity	105
Note 17. Stock-Based Compensation	106
Note 18 - Related Party Transactions	110
Note 19 - Income Taxes	110
Note 20 - Commitments and Contingencies	112
Note 21 - Guarantors	113
Note 22 - Quarterly Financial Information (Unaudited)	121
Note 23 - Subsequent Event	121

72

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholders and the Board of Directors of CyrusOne Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of CyrusOne Inc. (the "Company") as of December 31, 2019 and 2018, the related consolidated statements of operations, comprehensive income (loss), equity, and cash flows, for each of the three years in the period ended December 31, 2019, and the related notes and the schedules listed in the Index at Item 15 (a)(2) (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2019 and 2018, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2019, in conformity with accounting principles generally accepted in the United States of America.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company's internal control over financial reporting as of December 31, 2019, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 20, 2020, expressed an unqualified opinion on the Company's internal control over financial reporting.

Change in Accounting Principle

As discussed in Note 4 to the financial statements, effective January 1, 2019, the Company adopted FASB Accounting Standards Update 2016-02, Leases, using the modified retrospective approach, and effective January 1, 2018, the Company adopted FASB Accounting Standards Update 2016-01, Financial Instruments - Overall, using the modified retrospective approach.

Basis for Opinion

These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company's financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Impairment Losses and Investment in Real Estate - Refer to Note 3 and 8 to the financial statements

Critical Audit Matter Description

The Company’s evaluation of its Investment in Real Estate for impairment involves an initial assessment of each real estate asset to determine whether events or changes in circumstances exist that may indicate that the carrying amounts of real estate assets are no longer recoverable.

The Company makes significant assumptions to evaluate real estate assets for possible indications of impairment. Changes in these assumptions could have a significant impact on the real estate assets identified for further analysis. For the year ended December 31, 2019, the company recognized approximately $0.7 million of impairment loss on real estate assets.

73

We identified the determination of impairment indicators for real estate assets as a critical audit matter because of the significant assumptions management makes when determining whether events or changes in circumstances have occurred indicating that the carrying amounts of real estate assets may not be recoverable. This required a high degree of auditor judgment when performing audit procedures to evaluate whether management appropriately identified impairment indicators.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the Company’s evaluation of Investment in Real Estate for indicators of impairment included the following, among others:

• We tested the effectiveness of controls related to the identification of impairment indicators for Investments in Real Estate.

• We evaluated management’s assumptions regarding the identification of events or circumstances indicating the carrying amount of a real estate investment may not be recoverable and compared the assumptions to Company documentation and external sources.

• We performed site visits at select properties during which we inquired with the property manager of the site regarding the occurrence of any event that may have significantly affected the property's value and observed the overall condition of the premises based on the physical inspection for any signs of deterioration or other indicators of impairment.

/s/ Deloitte & Touche LLP

Dallas, Texas

February 20, 2020

We have served as the Company's auditor since 2011.

74

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholders and the Board of Directors of CyrusOne Inc.

Opinion on Internal Control over Financial Reporting

We have audited the internal control over financial reporting of CyrusOne Inc. (the “Company”) as of December 31, 2019, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2019, based on criteria established in Internal Control - Integrated Framework (2013) issued by COSO.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated financial statements as of and for the year ended December 31, 2019, of the Company and our report dated February 20, 2020, expressed an unqualified opinion on those financial statements, and includes an explanatory paragraph regarding the adoption of the FASB Accounting Standards Update 2016-02, Leases, and FASB Accounting Standards Update 2016-01, Financial Instruments - Overall.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Annual Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ Deloitte & Touche LLP

Dallas, Texas    

February 20, 2020

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CYRUSONE INC.

Consolidated Balance Sheets

IN MILLIONS, except share and per share amounts
As of December 31,	2019			2018
Assets
Investment in real estate:
Land	$	147.6		$	118.5
Buildings and improvements	1,761.4			1,677.5
Equipment	3,028.2			2,630.2
Gross operating real estate	4,937.2			4,426.2
Less accumulated depreciation	(1,379.2		)	(1,054.5		)
Net operating real estate	3,558.0			3,371.7
Construction in progress, including land under development	946.3			744.9
Land held for future development	206.0			176.4
Total investment in real estate, net	4,710.3			4,293.0
Cash and cash equivalents	76.4			64.4
Rent and other receivables (net of allowance for doubtful accounts of $1.8 and $1.7 as of December 31, 2019 and December 31, 2018, respectively)	291.9			234.9
Restricted cash	1.3			—
Operating lease right-of-use assets, net	161.9			—
Equity investments	135.1			198.1
Goodwill	455.1			455.1
Intangible assets (net of accumulated amortization of $207.5 and $166.9 as of December 31, 2019 and December 31, 2018, respectively)	196.1			235.7
Other assets	113.9			111.3
Total assets	$	6,142.0		$	5,592.5
Liabilities and equity
Debt	$	2,886.6		$	2,624.7
Finance lease liabilities	31.8			156.7
Operating lease liabilities	195.8			—
Construction costs payable	176.3			195.3
Accounts payable and accrued expenses	122.7			121.3
Dividends payable	58.6			51.0
Deferred revenue and prepaid rents	163.7			148.6
Deferred tax liability	60.5			68.9
Other liabilities	11.4			—
Total liabilities	3,707.4			3,366.5
Commitment and contingencies
Stockholders' equity
Preferred stock, $.01 par value, 100,000,000 authorized; no shares issued or outstanding	—			—
Common stock, $.01 par value, 500,000,000 shares authorized and 114,808,898 and 108,329,314 shares issued and outstanding at December 31, 2019 and December 31, 2018, respectively	1.1			1.1
Additional paid in capital	3,202.0			2,837.4
Accumulated deficit	(767.3		)	(600.2		)
Accumulated other comprehensive loss	(1.2		)	(12.3		)
Total stockholders’ equity	2,434.6			2,226.0
Total liabilities and equity	$	6,142.0		$	5,592.5

The accompanying notes are an integral part of the consolidated financial statements.

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CYRUSONE INC.

Consolidated Statements of Operations

 

IN MILLIONS, except per share data
For the Year Ended December 31,	2019			2018			2017
Revenue	$	981.3		$	821.4		$	672.0
Operating expenses:
Property operating expenses	383.4			292.4			235.1
Sales and marketing	20.2			19.6			17.0
General and administrative	83.5			80.6			67.0
Depreciation and amortization	417.7			334.1			258.9
Transaction, acquisition, integration and other related expenses	8.8			5.0			11.9
Impairment losses	0.7			—			58.0
Total operating expenses	914.3			731.7			647.9
Operating income	67.0			89.7			24.1
Interest expense, net	(82.0		)	(94.7		)	(68.1		)
Gain on marketable equity investment	132.3			9.9			—
Loss on early extinguishment of debt	(71.8		)	(3.1		)	(36.5		)
Foreign currency and derivative losses, net	(7.5		)	—			—
Other expense	(0.3		)	—			—
Net income (loss) before income taxes	37.7			1.8			(80.5		)
Income tax benefit (expense)	3.7			(0.6		)	(3.0		)
Net income (loss)	$	41.4		$	1.2		$	(83.5	)
Weighted average number of common shares outstanding - basic	112.1			99.8			88.9
Weighted average number of common shares outstanding - diluted	112.5			100.4			88.9
Income (loss) per share - basic	$	0.36		$	—		$	(0.95	)
Income (loss) per share - diluted	$	0.36		$	—		$	(0.95	)

The accompanying notes are an integral part of the consolidated financial statements.

77

CYRUSONE INC.

Consolidated Statements of Comprehensive Income (Loss)

IN MILLIONS
For the Year Ended December 31,	2019			2018			2017
Net income (loss)	$	41.4		$	1.2		$	(83.5	)
Other comprehensive income (loss):
Foreign currency translation adjustment	11.8			(10.9		)	(0.1		)
Net loss on cash flow hedging instruments	(0.7		)	—			—
Unrealized gain on equity investment	—			—			75.6
Comprehensive income (loss)	$	52.5		$	(9.7	)	$	(8.0	)

The accompanying notes are an integral part of the consolidated financial statements.

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CYRUSONE INC.

Consolidated Statements of Equity

IN MILLIONS	Shares of Common Stock Outstanding		Common Stock		Additional Paid-In Capital			Accumulated Deficit			Accumulated Other Comprehensive Income (Loss)			Total Stockholders' Equity
Balance as of January 1, 2017	83.5		$	0.8	$	1,412.3		$	(249.8	)	$	(1.3	)	$	1,162.0
Net loss	—		—		—			(83.5		)	—			(83.5		)
Issuance of common stock, net	12.8		0.2		705.5			—			—			705.7
Stock-based compensation expense	(0.1	)	—		14.7			—			—			14.7
Tax payment upon exercise of equity awards	(0.1	)	—		(6.9		)	—			—			(6.9		)
Foreign currency translation adjustment	—		—		—			—			(0.1		)	(0.1		)
Unrealized gain on equity investment	—		—		—			—			75.6			75.6
Dividends declared, $1.68 per share	—		—		—			(153.6		)	—			(153.6		)
Balance as of December 31, 2017	96.1		$	1.0	$	2,125.6		$	(486.9	)	$	74.2		$	1,713.9
Adoption of accounting standards:
Revenue recognition, cumulative modified retrospective	—		—		—			0.3			—			0.3
Financial instruments (equity investment), cumulative adjustment	—		—		—			75.6			(75.6		)	—
Net income	—		—		—			1.2			—			1.2
Issuance of common stock, net	12.3		0.1		699.5			—			—			699.6
Stock-based compensation expense	—		—		17.5			—			—			17.5
Tax payment upon exercise of equity awards	(0.1	)	—		(5.2		)	—			—			(5.2		)
Foreign currency translation adjustment	—		—		—			—			(10.9		)	(10.9		)
Dividends declared, $1.84 per share	—		—		—			(190.4		)	—			(190.4		)
Balance as of December 31, 2018	108.3		$	1.1	$	2,837.4		$	(600.2	)	$	(12.3	)	$	2,226.0
Adoption of accounting standards:
Impact of adoption of ASU 2016-02 related to leases (See Note 4)	—		—		—			9.5			—			9.5
Net income	—		—		—			41.4			—			41.4
Issuance of common stock, net	6.5		—		357.2			—			—			357.2
Stock-based compensation expense	—		—		16.7			—			—			16.7
Tax payment upon exercise of equity awards	—		—		(9.3		)	—			—			(9.3		)
Foreign currency translation adjustment	—		—		—			—			11.8			11.8
Net loss on cash flow hedging instruments	—		—		—			—			(0.7		)	(0.7		)
Dividends declared, $1.92 per share	—		—		—			(218.0		)	—			(218.0		)
Balance at December 31, 2019	114.8		$	1.1	$	3,202.0		$	(767.3	)	$	(1.2	)	$	2,434.6

The accompanying notes are an integral part of the consolidated financial statements.

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CYRUSONE INC.

Consolidated Statements of Cash Flows

IN MILLIONS
For the Year Ended December 31,	2019			2018			2017
Cash flows from operating activities:
Net income (loss)	$	41.4		$	1.2		$	(83.5	)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	417.7			334.1			258.9
Provision for bad debt expense	1.7			2.6			0.2
Unrealized gain on marketable equity investment	(65.6		)	(9.9		)	—
Realized gain on marketable equity investment	(66.7		)	—			—
Foreign currency and derivative losses, net	7.5			—			—
Proceeds from swap terminations	3.6
Loss on asset disposals	0.4			—			—
Impairment loss on real estate	0.7			—			58.0
Loss on early extinguishment of debt	71.8			3.1			36.5
Interest expense amortization, net	5.0			4.0			4.2
Stock-based compensation expense	16.7			17.5			14.7
Deferred income tax benefit	(7.5		)	—			—
Operating lease cost	20.3			—			—
Other	0.2			(0.6		)	1.5
Change in operating assets and liabilities:
Rent and other receivables, net and other assets	(74.2		)	(80.2		)	(64.3		)
Accounts payable and accrued expenses	(0.8		)	3.0			29.3
Deferred revenue and prepaid rents	15.6			34.5			34.0
Operating lease liabilities	(22.1		)	—			—
Net cash provided by operating activities	365.7			309.3			289.5
Cash flows from investing activities:
Investment in real estate	(876.4		)	(865.7		)	(914.5		)
Asset acquisitions, primarily real estate, net of cash acquired	—			(462.8		)	(492.3		)
Proceeds from sale of equity investments	199.0			—			—
Equity investments	(3.8		)	(12.6		)	(100.0		)
Proceeds from the sale of real estate assets	1.3			—			—
Net cash used in investing activities	(679.9		)	(1,341.1		)	(1,506.8		)
Cash flows from financing activities:
Issuance of common stock, net	357.2			699.6			705.7
Dividends paid	(210.4		)	(181.1		)	(145.7		)
Proceeds from revolving credit facility	656.7			688.3			1,037.3
Repayments of revolving credit facility	(182.5		)	(647.4		)	(1,275.0		)
Proceeds from unsecured term loan	—			1,300.0			350.0
Repayments of unsecured term loan	(200.0		)	(900.0		)	—
Proceeds from senior notes	1,197.4			—			1,217.8
Repayments of senior notes	(1,200.0		)	—			(474.8		)
Payment of debt extinguishment costs	(72.0		)	—			(30.0		)
Payment of deferred financing costs	(9.4		)	—			(16.7		)
Payments on finance lease liabilities	(2.9		)	(9.5		)	(9.8		)
Interest paid by lenders on issuance of the senior notes	—			—			2.7
Tax payment upon exercise of equity awards	(9.3		)	(5.2		)	(6.9		)
Net cash provided by financing activities	324.8			944.7			1,354.6
Effect of exchange rate changes on cash, cash equivalents and restricted cash	2.7			(0.4		)	—
Net increase (decrease) in cash, cash equivalents and restricted cash	13.3			(87.5		)	137.3
Cash, cash equivalents and restricted cash at beginning of period	64.4			151.9			14.6
Cash, cash equivalents and restricted cash at end of period	$	77.7		$	64.4		$	151.9
Supplemental disclosure of cash flow information:
Cash paid for interest, including amounts capitalized of $32.9 million, $24.4 million and $17.0 million in 2019, 2018 and 2017, respectively	$	123.0		$	115.4		$	68.8
Cash paid for income taxes	3.5			3.4			2.2
Non-cash investing and financing activities:
Construction costs payable	176.3			195.3			115.5
Dividends payable	58.6			51.0			41.8

The accompanying notes are an integral part of the consolidated financial statements.

80

CYRUSONE INC.

Notes to Consolidated Financial Statements

1. Description of Business

CyrusOne Inc., together with CyrusOne GP (the "General Partner"), a wholly-owned subsidiary of CyrusOne Inc., through which CyrusOne Inc. wholly owns CyrusOne LP (the "Operating Partnership") and the subsidiaries of the Operating Partnership (collectively, “CyrusOne”, “we”, “us”, “our”, and the “Company”) is an owner, operator and developer of enterprise-class, carrier-neutral, multi-tenant and single-tenant data center properties. As of December 31, 2019, all of the issued and outstanding Operating Partnership units of CyrusOne LP are owned, directly or indirectly, by the Company. Our customers operate in a number of industries, including information technology, financial services, energy, oil and gas, mining, medical, research and consulting services, and consumer goods and services. We currently operate 49 data centers, including two recovery centers, located in the United States, United Kingdom, Germany and Singapore.

On January 24, 2013, the Company completed its initial public offering (the "IPO") of common stock and its common stock currently trades on the NASDAQ Exchange under the ticker symbol "CONE".

2. Basis of Presentation

The accompanying financial statements are prepared on a consolidated basis. In addition, the accompanying financial statements have been prepared in accordance with generally accepted accounting principles in the U.S. (GAAP) and include the accounts of the Company, as well as all wholly-owned subsidiaries and any consolidated variable interest entities. All intercompany transactions and balances have been eliminated in consolidation.

3. Summary of Significant Accounting Policies

Investment in Real Estate

Acquisition of Properties

Investment in real estate consist of land, buildings, improvements and integral equipment utilized in our data center operations. We expect most acquisitions to be an acquisition of assets rather than a business combination as our typical acquisitions consist of properties whereby substantially all the fair value of gross assets acquired is concentrated in a single asset set (land, building and in-place leases), which are treated as asset acquisitions. See Business Combinations and Asset Acquisitions herein.

Business Combinations and Asset Acquisitions

We evaluate whether an acquisition is a business combination or an asset acquisition by determining whether the set of assets is a business.

Asset Acquisitions

When substantially all of the fair value of gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets, the transaction is accounted for as an asset acquisition. Asset acquisitions are recorded at the cumulative acquisition costs and allocated to the assets acquired and liabilities assumed on a relative fair value basis. The Company allocates the purchase price of real estate to identifiable tangible assets such as land, building, land improvements and tenant improvements acquired based on their fair value. In estimating the fair value of each component, management considers appraisals, replacement cost, its own analysis of recently acquired and existing comparable properties, market rental data and other related information. Transaction costs associated with asset acquisitions are capitalized.

Business Combinations

When substantially all of the fair value is not concentrated in a group of similar identifiable assets, the set of assets will generally be considered a business and the Company applies the purchase method for business combinations, where all tangible and identifiable intangible assets acquired and all liabilities assumed are recorded at fair value. Any excess purchase price is recorded as goodwill. Transaction costs associated with business combinations are expensed as incurred.

The following discussion applies to our initial determination of fair value and the resulting subsequent accounting which is generally applicable to both asset acquisitions and business combinations.

The fair value of any tangible real estate assets acquired is determined by valuing the building as if it were vacant, and the fair value is then allocated to land, buildings, equipment and improvements based on available information including replacement cost, appraisal or using net operating income capitalization rates, discounted cash flow analysis or similar fair value models.

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Notes to Consolidated Financial Statements - (continued)

We determine in-place lease values based on our evaluation of the specific characteristics of each tenant’s lease agreement and by applying a fair value model. The estimates of fair value of in-place leases include an estimate of carrying costs during the expected lease up periods considering current market conditions. In estimating fair value of in-place leases, we consider items such as real estate taxes, insurance, leasing commissions, tenant improvements and other operating expenses to execute similar leases as well as projected rental revenue and carrying costs during the expected lease up period. We amortize the value of in-place leases acquired to expense over the approximate weighted average remaining term of the leases, adjusted for projected tenant turnover, on a composite basis.

We determine the value of above-market and below-market in-place leases for acquired properties based on the present value (using an interest rate that reflects the risks associated with the leases acquired) of the difference between (1) the contractual amounts to be paid pursuant to the in-place leases and (2) estimates of current market lease rates for the corresponding in-place leases, measured over a period equal to (i) the remaining non-cancellable lease term for above-market leases, or (ii) the remaining non-cancellable lease term plus any renewal options that we consider are reasonably certain that a lessee will execute such renewal option when a lease commences. We record the fair value of above-market and below-market leases as intangible assets or liabilities, and amortize them as an adjustment to revenue over the lease term. 

We determine the fair value of assumed debt by calculating the net present value of the scheduled debt service payments using current market-based terms for interest rates for debt with similar terms that management believes we could obtain on similar structures and maturities. Any difference between the fair value and stated value of the assumed debt is recorded as a discount or premium and amortized over the remaining term of the loan.

In a business combination, we retain the previous lease classification unless there is a lease modification and that modification is not accounted for as a separate new lease. We elected to apply the short-term lease measurement and recognition exemption available under the new accounting standard for leases (discussed below in Note 4, Recently Issued Accounting Standards) to leases that have a remaining lease term of 12 months or less at the acquisition date, and accordingly, do not recognize an intangible asset if the terms of an operating lease are favorable relative to market terms, or a liability if the terms are unfavorable relative to market terms. Leasehold improvements are amortized over the shorter of the useful life of the assets and the remaining lease term at the date of acquisition.

Capitalization of Costs

We capitalize costs directly related to the development, pre-development or improvement of our investment in real estate, referred to as capital projects and other activities included within this paragraph. Costs associated with our capital projects are capitalized as incurred. If the project is abandoned, these costs are expensed during the period in which the project is abandoned. Costs considered for capitalization include, but are not limited to, construction costs, interest, real estate taxes, insurance and utilities, if appropriate. We capitalize indirect costs such as personnel, office and administrative expenses that are directly related to our development projects based on an estimate of the time spent on the construction and development activities. These costs are capitalized only during the period in which activities necessary to ready an asset for its intended use are in progress and such costs are incremental and identifiable to a specific activity to get the asset ready for its intended use. We determine when the capitalization period begins and ends through communication with project and other managers responsible for the tracking and oversight of individual projects. In the event that the activities to ready the asset for its intended use are suspended, the capitalization period will cease until such activities are resumed. In addition, we capitalize incremental initial direct costs incurred for successful origination of new leases which include internal and external leasing commissions. Interest expense is capitalized based on actual qualifying capital expenditures from the period when development commences until the asset is ready for its intended use, at the weighted average borrowing rate during the period. These costs are included in investment in real estate and depreciated over the estimated useful life of the related assets.

Costs incurred for maintaining and repairing our properties, which do not extend their useful lives, are expensed as incurred.

Impairment Losses

When events or circumstances indicate that the carrying amount of a real estate investment may not be recoverable, we review the carrying value of the asset. When such impairment indicators exist, we review an estimate of the undiscounted future cash flows expected to result from the use of the real estate investment and proceeds from its eventual disposition and compare such amount to the carrying amount of the real estate investment. If our undiscounted cash flows indicate that we are unable to recover the carrying value of the real estate investment, an impairment loss is recognized. An impairment loss is measured as the amount by which the real estate investment's carrying value exceeds its estimated fair value. We recognized an impairment loss of $0.7 million for the year ended December 31, 2019 on our South Bend - Monroe facility. We did not record any impairment losses for the year ended December 31, 2018. We recognized impairment losses of $58.0 million for the year ended December 31, 2017 related to our leased data center facilities in the Connecticut markets and our leased facility in Singapore.

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Notes to Consolidated Financial Statements - (continued)

Cash and Cash Equivalents and Restricted Cash

Cash and cash equivalents include all non-restricted cash held in financial institutions and other non-restricted highly liquid short-term investments with original maturities of three months or less. Restricted cash includes cash equivalents restricted by contract or regulation, including letters of credit.

Equity Investments

We hold investments in various joint ventures where the Company evaluates its ability to influence the operating or financial decisions of the investee in applying the appropriate method of accounting for such investments. Influence tends to be more effective as the investor's percent of ownership in the voting rights of the investee increases. Our equity investments represent less than 20% of the voting rights of the investees and we do not exercise influence over the investee's operating and financial decisions. Accordingly, we do not account for our equity investments using the equity method accounting. For further information about our equity investments, see Note 9, Equity Investments.

Our investment in GDS Holdings Limited (“GDS”) is classified as “available for sale” and is carried at fair value. Changes in the fair value are reported as a component of net income (loss) in Gain (loss) on marketable equity investments.

Our other equity investment is carried at cost because we do not exercise influence over the operating and financial decisions of the venture and there is no readily determinable fair value and our investment is recorded at cost less impairment, if any. Dividends paid from operating profits are reported as a component of net income (loss), while other dividends are reported as a return of capital.

Goodwill

We evaluate goodwill for possible impairment at least annually or upon the occurrence of events or circumstances that indicate that they would more likely than not reduce the fair value of a reporting unit below its carrying amount.

For our annual impairment evaluation, we have the option of performing a qualitative or quantitative goodwill impairment analysis. A qualitative analysis, step zero, analyzes the macro-economic environment in which we operate for any significant changes such as deterioration in the market that the Company operates or overall financial performance such as declining cash flows. Also, entity specific changes are analyzed such as change in management, strategy or composition of reporting unit. This assessment of qualitative factors serves as a basis for determining whether it is necessary to perform the step one test. A quantitative analysis, step one, requires the Company to estimate the fair value of the reporting unit and compare the fair value to the carrying value to identify whether the value of the recorded goodwill is impaired. Changes in certain assumptions could have a significant impact on the impairment test for goodwill under step one. The most critical assumptions are projected future growth rates, operating margins, capital expenditures, tax rates, terminal values and discount rates. These assumptions are subject to change as our long-term plans and strategies are updated each year.

During the fourth quarters of 2019, 2018 and 2017, we performed a qualitative evaluation and determined that the fair value of the reporting unit is substantially in excess of the carrying amount and therefore determined that further quantitative impairment testing was not necessary.

Rent and Other Receivables

Receivables consist principally of rent receivables from customers and straight-line rent receivables with estimated credit losses recorded as an allowance for doubtful accounts. Straight-line rent receivable, net was $156.8 million and $128.7 million at December 31, 2019 and 2018, respectively. The allowance for doubtful accounts is estimated based upon historic patterns of credit losses for aged receivables as well as specific provisions for certain identifiable, potentially uncollectible balances.

Deferred Revenue and Prepaid Rents

Deferred revenue is recorded when a customer makes a contractual payment in excess of revenues recognized in accordance with GAAP. Prepaid rent liability is recorded when a customer makes an advance payment or they are contractually obligated to pay any amounts in advance of the associated lease or service period.

Finance Lease Liabilities

Finance lease liabilities represent leases of land and real estate we classified as finance leases. The Company adopted Accounting Standards Codification (“ASC”) 842, Leases (“ASC 842”), the new accounting standard for leases, effective January 1, 2019 using the modified retrospective approach and prior periods were not restated. Prior to the adoption of ASC 842, the Company had lease

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Notes to Consolidated Financial Statements - (continued)

arrangements where we were involved in the construction of structural improvements to develop buildings into data centers. We substantially bore all the construction period risk, such as managing or funding construction, we were deemed to be the accounting owner of the leased property and, we were required to record at fair value the property and associated liability on our Consolidated Balance Sheets. These transactions did not qualify for sale-leaseback accounting due to our continued involvement in these data center operations. Following the adoption of ASC 842, these leases are classified as operating leases and the liability is included in the Consolidated Balance Sheets under Operating lease liabilities, see Note 6, Leases - As a Lessee, for further information.

Revenue Recognition

Our revenue consists of lease revenue and revenue from contracts with customers.

Lease Revenue:

Our leasing revenue primarily consists of colocation rent, metered power reimbursements and interconnection revenue and is accounted for under ASC 842, Leases. We generally are not entitled to reimbursements for rental expenses including real estate taxes, insurance or other common area operating expenses.

a. Colocation Rent Revenue

Colocation rent revenues, including interconnection revenue, are fixed minimum lease payments generally billed monthly in advance based on the contracted power or leased space. Some contracts may provide initial free rent periods and rents that escalate over the term of the contract. If rents escalate without the lessee gaining access to or control over additional leased power or space at the beginning of the lease term, the rental payments are recognized as revenue on a straight-line basis over the term of the lease. If rents escalate because the lessee gains access to and control over additional power and or leased space, revenue is recognized in proportion to the additional power or space in the periods that the lessee has control over the use of the additional power or space. The excess of revenue recognized over amounts contractually due is recognized as a straight-line receivable, which is included in rent and other receivables in our Consolidated Balance Sheet. Some of our leases are structured on a gross basis in which the customer pays a fixed amount for colocation space and power. The revenue for these types of leases is recorded in colocation rent revenue.

b. Metered Power Reimbursements Revenue

Some of our leases provide that the customer is separately billed for power based upon actual or estimated metered usage at rates then in effect. Metered power reimbursement revenue is variable lease payments generally billed one month in arrears, and an estimate of this revenue is accrued in the month that the associated power is provided and recorded in metered power reimbursements revenue.

Revenue from Contracts with Customers

Managed services, equipment sales, installations and other services are recognized under ASC 606.

Equipment sold by us generally consists of servers, switches, networking equipment, cable infrastructure and cabinets. Revenue is recognized at a point-in-time when control of the equipment transfers to the customer from the Company, which generally occurs upon delivery to the customer.

Managed services include providing of a full-service managed data center, monitoring customer computer equipment, managing backups and storage, utilization reporting and other related ancillary information technology services. Management service contracts generally range from one to five years.

Installation services include mounting, wiring, and testing of customer owned equipment. The installation period is typically short term in duration, and accordingly, revenue from the installation of customer equipment is recognized at a point-in-time once the installation is complete and the performance obligation is satisfied. Other services generally include installation of customer equipment, performing customer system re-boots, server cabinet and cage management, power monitoring, shipping and receiving, resolving technical issues, and other services requested by the customer. Other service revenue is measured based on the consideration specified in the contract and recognized over time as we satisfy the performance obligation.

We adopted the practical expedient in ASC 606 that allows the Company to not disclose information about remaining performance obligations that have original expected durations of one year or less, the amount of the transaction price allocated to the remaining performance obligations and when we expect to recognize that amount as revenue for the year. We have also adopted the “as invoiced” practical expedient, whereby the Company recognizes revenue in the amount that directly corresponds to the amount of value transferred to the customer.

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Notes to Consolidated Financial Statements - (continued)

Depreciation and Amortization Expense

Depreciation expense is recognized over the estimated useful lives of real estate applying the straight-line method. The useful life of leased real estate and leasehold improvements is the lesser of the economic useful life of the asset or the term of the lease, including optional renewal periods if renewal is reasonably certain.

Amortization expense is recognized over the estimated useful lives of finite-lived intangibles. Finite-lived intangibles include trademarks, customer relationships, favorable leasehold interests, in-place leases, trade names and deferred leasing costs. See Note 10, Goodwill, Intangible and Other Long-Lived Assets, for details.

Foreign Currency Translation and Transactions

The financial position of foreign subsidiaries is translated at the exchange rates in effect at the end of the period, while revenues and expenses are translated at average exchange rates during the period. Gains or losses from translation of foreign operations where the local currency is the functional currency are included as components of other comprehensive income (loss). Gains or losses from foreign currency transactions are included in determining net income (loss).

Stock-Based Compensation

We have a stock-based incentive award plan for our employees and directors. Stock-based compensation expense associated with these awards is recognized in general and administrative expenses, property operating expenses and sales and marketing expenses in our Consolidated Statements of Operations. We measure stock-based compensation at the estimated fair value on the grant date and recognize the amortization of stock-based compensation expense over the requisite service period. Fair value is determined based on assumptions related to volatility, interest rates, market and company performance.

Fair Value Measurements

Fair value measurements are utilized in accounting for business combinations, asset acquisitions, testing of goodwill and other long-lived assets for impairment, recording unrealized gain on available-for-sale securities, derivatives and related disclosures. Fair value of financial and non-financial assets and liabilities is defined as an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. The three-tier hierarchy that prioritizes certain inputs used in the methodologies of measuring fair value for asset and liabilities, is as follows:

Level 1—Observable inputs for identical instruments such as quoted market prices;

Level 2—Inputs include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (i.e., interest rates, yield curves, etc.), and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs); and

Level 3—Unobservable inputs that reflect our determination of assumptions that market participants would use in pricing the asset or liability. These inputs are developed based on the best information available, including our own data.

Derivative Instruments

We primarily hedge our foreign currency risk by borrowing in the currencies in which we invest. We may use derivative financial instruments, such as cross-currency swaps to manage foreign currency exchange rate risk related to both our foreign investments and the related earnings. In addition, we occasionally use interest rate swap contracts to manage interest rate risk and limit the impact of future interest rate changes on earnings and cash flows, primarily related to variable-rate debt.

Derivative instruments are measured at fair value and recorded as other assets or other liabilities. The accounting for gains and losses resulting from changes in fair value is dependent on the use of the derivative and whether it is designated and qualifies for hedge accounting.

Designated Derivatives. We may choose to designate our derivative financial instruments, generally cross-currency swaps as net investment hedges in foreign operations. At inception of the transaction, we designate the derivative financial instrument as a hedge of a specific underlying exposure, including the risk management objective and the strategy for undertaking the hedge transaction. We formally assess both at inception and at least quarterly thereafter, the effectiveness of our hedging transactions. Due to the high degree of effectiveness between the hedging instruments and the underlying exposures hedged, fluctuations in the value of the derivative financial instruments will generally be offset by changes in the cash flows or fair values of the underlying exposures being hedged.

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Notes to Consolidated Financial Statements - (continued)

In addition to the net investment hedges described above, we may issue debt in a currency that is not the same functional currency of the borrowing entity to hedge our international investments. We designate the debt and related accrued interest as a net investment hedge to offset the translation and economic exposures related to our international investments. If the debt and related accrued interest exceeds the designated amount of our international investment, the foreign currency remeasurement on the unhedged portion of the debt during the period is recognized in Foreign currency and derivative losses, net.

For cash flow hedges, such as interest rate swaps, we report the effective portion of the gain or loss as a component of other comprehensive income (loss) and reclassify it to the applicable line item in the Consolidated Statements of Operations, generally Interest expense, net over the corresponding period of the underlying hedged item. The ineffective portion of a derivative financial instrument’s change in fair value is recognized in earnings, generally Interest expense, net at the time the ineffectiveness occurred. To the extent the hedged debt related to our interest rate swaps and forwards is paid off early, we write off the remaining balance in other comprehensive income (loss) and recognize the amount in Interest expense, net in the Consolidated Statements of Operations.

Undesignated Derivatives. Derivative instruments, such as cross-currency swaps, for which hedge accounting is not applied are recorded at fair value in other assets and other liabilities and gains and losses resulting from changes in the fair value are reported in Foreign currency and derivative losses, net in the Consolidated Statements of Operations.

In addition, we may choose to not designate our interest rate swap and forward contracts. If a swap or forward contract is not designated as a hedge, the changes in fair value of these instruments is immediately recognized in earnings in Interest expense, net in the Consolidated Statements of Operations.

Segment Information

Our data centers have similar revenues and operating expenses across all geographic locations. The service offerings and delivery of services are provided in a similar manner, using the same types of facilities and similar technologies. Our chief operating decision maker, the Company's Chief Executive Officer, reviews our financial information on an aggregate basis and makes decisions about the allocations of Company resources and as a result, we have one reportable business segment.

One customer represented approximately 21% and 18% of our revenue for the years ended December 31, 2019 and 2018.

Revenues from properties were $981.3 million, $821.4 million and $672.0 million for the years ended December 31, 2019, 2018 and 2017, respectively. We had net investment in real estate of $4.7 billion and $4.3 billion, at December 31, 2019 and 2018, respectively.

Use of Estimates

Preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. These estimates and assumptions are based on management’s knowledge of current events and actions that we may undertake in the future. Significant estimates include and are related to determining lease terms and revenue recognition, the fair value for purchase price allocations for business combinations and asset acquisitions, and the useful lives of real estate and other long-lived assets. Actual results may differ from these estimates and assumptions.

Reclassifications

Certain financial information has been revised to conform to the current year presentation due to changes in the significance of the particular activity. The following items have been reclassified:

Balance Sheet as of December 31, 2018

• Straight-line rent receivable, net, ($128.7 million) is classified within rent and other receivables, net. This item was previously included in other assets.

Statement of Cash Flows for the year ended December 31, 2018

• Proceeds from revolving credit facility and proceeds from unsecured term loan are separate line items in the current presentation. These items were previously combined in proceeds from debt, net ($1,988.3 million) in the comparable prior year period. Repayments of revolving credit facility and repayments of unsecured term loan are separate line items in the current presentation. These items were previously combined in payments on debt ($1,547.4 million) in the comparable prior year period.

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Notes to Consolidated Financial Statements - (continued)

Statement of Cash Flows for the year ended December 31, 2017

• Proceeds from revolving credit facility, proceeds from unsecured term loan, proceeds from senior notes, payment of debt extinguishment costs and payment of deferred financing costs are separate line items in the current presentation. These items were previously combined in proceeds from debt, net ($2,558.4 million) in the comparable prior year period. Repayments of revolving credit facility and repayments of senior notes are separate line items in the current presentation. These items were previously combined in payments on debt ($1,749.8 million) in the comparable prior year period.

4. Recently Issued Accounting Standards

Recently Adopted Accounting Pronouncements

Leases

We adopted ASU 2016-02 (codified in ASC 842, Leases) on January 1, 2019, applied the package of practical expedients included therein and utilized the modified retrospective transition method with the cumulative effect of transition recorded as an adjustment to retained earnings on the effective date. By applying the modified retrospective transition method, the presentation of financial information for periods prior to January 1, 2019 was not restated.

We elected the package of practical expedients, which permits us to not reassess (1) whether any expired or existing contracts are or contain leases, (2) the lease classification for any expired or existing leases, and (3) the treatment of any initial direct costs for any existing leases as of the effective date. We did not elect the hindsight practical expedient, which permits entities to use hindsight in determining the lease term and assessing impairment.

As a Lessee

The ASU requires that a liability be recorded on the balance sheet for all leases where the reporting entity is a lessee, based on the present value of future lease obligations discounted based on the implicit rate or alternatively our incremental borrowing rate. The implicit rate is generally not determinable and, as a result, we use our incremental borrowing rate at the lease commencement date to determine the present value. We determine our incremental borrowing rate based on an estimate of our existing yield curve at the lease commencement. The rates are then adjusted for various factors to estimate the company’s secured rate, including the lease term and collateralization. The determination of our incremental borrowing rate requires judgment. A corresponding right-of-use ("ROU") asset will also be recorded. Amortization of the lease obligation and the ROU asset for leases classified as operating leases are on a straight-line basis. Leases classified as financing leases are required to be accounted for as financing arrangements similar to the accounting treatment for capital leases under ASC 840, Leases (the former accounting standard for all leases, ("ASC 840")).

We elected the practical expedient to combine our lease and related non-lease components by asset class for our leases.

We elected the practical expedient to not evaluate land easements not previously accounted for as leases prior to the entity’s adoption of the new accounting standard for leases.

We elected to apply the short-term lease measurement and recognition exemption available for leases under the new accounting standard for leases that have an original lease term of 12 months or less.

The adoption of ASC 842 had a significant impact on our Consolidated Balance Sheets due to the recognition of approximately $87.0 million of ROU assets and $123.2 million of lease liabilities for operating leases. We recognized a $9.5 million cumulative effect adjustment to retained earnings. The adjustment to retained earnings was driven principally by measurement of operating lease liabilities at the present value of the remaining lease payments at the adoption date of January 1, 2019. The increase was offset in part by impairment of ROU assets associated with one build-to-suit ("BTS") arrangement recognized as an operating lease under the new accounting standard for leases.

Additionally, we de-recognized certain previously recognized BTS lease assets and liabilities which under the new accounting standard for leases are recognized as operating lease ROU assets and lease liabilities. Prior to the adoption of the new accounting standard for leases, these leases were accounted as financing arrangements or BTS leases assets and liabilities and recorded as buildings and improvement and lease financing arrangements. The table below reflects the impact of adoption of the lease standard on our Consolidated Balance Sheets as of December 31, 2019 and 2018 (in millions) related to previously reported BTS leases:

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Notes to Consolidated Financial Statements - (continued)

Impact to the Consolidated Balance Sheets:	As of December 31, 2019		As of December 31, 2018
Buildings and improvements, net of accumulated depreciation	$	—	$	77.4
Operating lease right-of-use assets, net of amortization	44.9		—
Finance lease liabilities	—		123.3
Operating lease liabilities, net of accretion	77.9		—

Prior to the adoption of the new accounting standard for leases, BTS lease assets were amortized over the useful life of the asset and recorded as amortization expense and accretion of BTS lease liability was recorded as an interest expense in the Consolidated Statements of Operations. Upon adoption of the new accounting standard for leases, BTS leases are accounted as operating leases and amortization and accretion of lease liabilities of these operating leases are recorded as lease expenses in property operating expenses in our Consolidated Statements of Operations.

As a Lessor

The accounting for lessors remained largely unchanged from ASC 840. However, the new accounting standard for leases requires that lessors expense certain costs to obtain a lease that are not incremental to origination of a lease. Upon adoption, initial direct costs that are not incremental are expensed as general and administrative expense in our Consolidated Statements of Operations. Prior to the adoption of the new standard, these costs were capitalizable. As a result of electing the package of practical expedients, initial direct costs have not been reassessed prior to the effective date and therefore adoption of the lease standard did not have an impact on our previously reported Consolidated Statements of Operations with respect to initial direct costs.

In addition, under the new accounting standard for leases, certain exceptions under the previous standard for real estate no longer are applicable in the evaluation of the lease classification as an operating, sales type or direct financing lease. In the event that a real estate lease is classified as a sales-type lease, subject to certain conditions, a gain or loss is recognized based on the present value of the lease payments and residual value.

We elected the practical expedient to combine all of our lease and nonlease revenue components into a single combined lease component as nonlease components have the same pattern of transfer as the related predominant operating lease components. Our customer leases include options to extend or terminate the lease agreements. We do not generally include extension or termination options in a customer’s lease term for lease classification purposes or for recognizing lease revenue unless we are reasonably certain the customer will exercise these extension or termination options at lease commencement.

Share-based payments granted to nonemployees

On January 1, 2019, we adopted ASU 2018-07, Compensation-Stock Compensation (Topic 718) which simplifies the accounting for share-based payments granted to nonemployees for goods and services. Under this ASU, the guidance on such payments to nonemployees aligns with the requirements for share-based payments granted to employees. The adoption did not have a significant impact as to how the Company accounts for its share-based payments.

Equity investments

On January 1, 2018, we adopted ASU 2016-01 related to equity investments. Equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) are measured at fair value with changes in fair value recognized in net income. Prior to adoption of this update, changes in fair value for available for sale equity investments were recorded in other comprehensive income (loss). The adoption of the new standard was made through a cumulative-effect adjustment to beginning retained earnings of $75.6 million.

Changes in Shareholders' Equity

In August 2018, the SEC issued Securities Act Release No. 33-10532, Disclosure Update and Simplification, which amends certain of its disclosure requirements and is intended to facilitate the disclosure of information to investors and simplify compliance without significantly altering the total mix of information provided to investors. The amendments became effective on November 5, 2018. Among the amendments is the requirement to present the changes in shareholders’ equity in the interim financial statements (either in a separate statement or footnote) for interim periods on Form 10-Q. In accordance with the SEC's rule, the Company’s first presentation of changes in shareholders’ equity was shown in its Form 10-Q for the quarter ending March 31, 2019.

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Notes to Consolidated Financial Statements - (continued)

New Accounting Pronouncements Not Yet Adopted

In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes, which simplifies various aspects related to the accounting for income taxes, eliminates certain exceptions within ASC 740, Income Taxes, and clarifies certain aspects of the current guidance to promote consistency among reporting entities. The guidance is effective for periods beginning after December 15, 2020, with early adoption permitted. The Company is evaluating the impact of the new standard.

In August 2018, the FASB issued ASU 2018-15, Intangibles-Goodwill and Other-Internal-Use Software, which clarifies the accounting for implementation costs incurred in a hosting arrangement that is a service contract. Capitalization of these implementation costs are accounted for under the same guidance as implementation costs incurred to develop or obtain internal-use software and recorded as a prepaid asset. These capitalized costs are to be expensed ratably over the hosting arrangement term as operating expense, along with the service fees. The guidance is effective for periods beginning after December 15, 2019 and early adoption is allowed. The Company is evaluating the impact of the new standard but does not believe that adoption will have a significant impact on the Company.

In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement, which changes the fair value measurement disclosure requirements of ASC 820, Fair Value Measurement. The amendments are part of the FASB's disclosure framework project to improve the effectiveness of disclosures in the notes to the financial statements by facilitating clear communication of the information required by GAAP that is most important to financial statement users and are intended to improve the effectiveness of disclosures of fair value measurement by using those concepts. The guidance is effective for periods beginning after December 15, 2019 and early adoption is allowed. The Company is evaluating the impact of the new standard but does not believe that adoption will have a significant impact on the Company.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses, providing guidance which requires certain financial assets to be presented at the net amount expected to be collected. The FASB has subsequently issued various amendments to further clarify the scope of the initial guidance. ASU 2016-13 and its related amendments will apply to our rent receivables, notes receivable, net investments in leases and any other future financial assets that have the contractual right to receive cash that we may acquire in the future. FASB further clarified that receivables arising from operating leases are not within the scope of this sub-topic. The guidance is effective for periods beginning after December 15, 2019 and early adoption is allowed. The Company has evaluated the impact of the new standard and does not believe the adoption will have a significant impact on the Company because the Company has limited exposure to financial instruments subject to this standard.

5. Revenue Recognition

Lease Revenue

Lease revenue primarily consists of colocation rent and metered power reimbursements from the lease of our data centers. Colocation leases may include all or portions of a data center, where customers may also lease office space to support their colocation operations. Revenue is primarily based on power usage as well as square footage. Customer lease arrangements customarily contain provisions that allow for renewal or continuation on a month-to-month arrangement, and certain leases contain early termination rights. We do not include any of these extension or termination options in a customer’s lease term for lease classification purposes or for recognizing lease revenue unless we are reasonably certain the customer will exercise these extension or termination options at lease commencement. At lease commencement, early termination is generally not deemed probable due to the significant economic penalty incurred by the lessee to exercise its early termination right and to relocate their equipment installed in our facilities. Generally, our customer lease arrangements do not provide any option to purchase and are classified as operating leases.

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Notes to Consolidated Financial Statements - (continued)

At December 31, 2019, the future minimum lease payments to be received for the next five years under non-cancellable operating leases, excluding month-to-month arrangements and metered power reimbursements are shown below:

IN MILLIONS
2020	$	736.2
2021	620.2
2022	528.2
2023	426.5
2024	328.7
Thereafter	973.9
Total	$	3,613.7

Disclosures related to periods prior to adoption of the New Accounting Standard for Leases

The future minimum lease payments as of December 31, 2018 to be received under non-cancellable operating leases, excluding month-to-month arrangements and metered power reimbursements are shown below:

IN MILLIONS
2019	$	647.6
2020	553.7
2021	453.0
2022	365.5
2023	284.4
Thereafter	835.9
Total	$	3,140.1

Revenue from Contracts with Customers

Revenue from equipment sales and the installation of customer equipment is recognized at a point-in-time. Title to such assets are transferred to the customer, and the benefits of the installation service are typically consumed at the completion of the service.

Disaggregation of Revenue

For the year ended December 31, 2019, lease revenue disaggregated by primary revenue stream is as follows (in millions):

Lease revenue	Year Ended December 31, 2019
Colocation (Minimum lease payments)	$	793.5
Metered power reimbursements (Variable lease payments)	138.8
Total lease revenue	$	932.3

For the years ended December 31, 2019 and 2018 revenue from contracts with customers disaggregated by primary revenue stream is as follows (in millions):

Revenue from contracts with customers	Year Ended December 31, 2019		Year Ended December 31, 2018
Equipment sales and services	$	29.7	$	15.3
Other revenue	19.3		17.4
Total revenue from contracts with customers	$	49.0	$	32.7

Other revenue from contracts with customers includes $15.9 million and $13.5 million of revenue from managed services for the years ended December 31, 2019 and 2018, respectively. Total revenues from contracts with customers generated from operations outside of the United States were $2.9 million for the year ended December 31, 2019 and insignificant for the year ended December 31, 2018.

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Notes to Consolidated Financial Statements - (continued)

The balances from managed services customers accounts receivables were $6.4 million and $9.4 million as of December 31, 2019 and 2018, respectively. Contract assets and liabilities were not material as of both December 31, 2019 and 2018.

The Company had revenue of $981.3 million and $821.4 million for the years ended December 31, 2019 and 2018, respectively. One customer represented approximately 21% and 18% of our revenue for the years ended December 31, 2019 and 2018, respectively.

6. Leases - As a Lessee

ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. ROU assets and lease liabilities are recognized at the lease commencement date based on the estimated present value of lease payments over the lease term. Variable lease payments consisting of non-lease components and services are excluded from the ROU assets and lease liabilities and are recognized in the period in which the obligation is incurred.

The new accounting standard for leases defines initial direct costs as only the incremental costs of signing a lease. Initial direct costs related to leasing that are not incremental are expensed as general and administrative expense in our Consolidated Statements of Operations. As a result of electing the package of practical expedients, initial direct costs incurred prior to the effective date have not been reassessed.

Our operating lease agreements primarily consist of leased real estate and are included within operating lease ROU assets and operating lease liabilities on the Consolidated Balance Sheets. Many of our lease agreements include options to extend the lease, which are not included in our minimum lease payments unless they are reasonably certain to be exercised at lease commencement. Rental expense related to operating leases is recognized on a straight-line basis over the lease term.

We operate five data center facilities and have a data center under development subject to finance leases. During the third quarter of 2019, the Company entered into one ground lease in Dublin, the Republic of Ireland for a term of 999 years (see Note 7, Acquisitions and Purchases of Fixed Assets, for more information). The Dublin finance lease was capitalized as land and included in Construction in progress, including land under development on the Consolidated Balance Sheets. The remaining term of our data center finance leases range from two to twenty-one years with options to extend the initial lease term on all but one lease. As a result of electing the package of practical expedients, data center finance leases are included in buildings and improvements, equipment and finance lease liabilities in our Consolidated Balance Sheets consistent with the presentation under ASC 840 in the prior year. In addition, we lease 12 data centers and 4 offices supporting our sales and corporate activities under operating lease agreements. Our operating leases have remaining lease terms ranging from one to twenty-five years and one ground lease in Houston has a lease term that expires in 2066.

The components of lease expense are as follows (in millions):

	Year Ended December 31, 2019
Operating lease cost	$	20.3
Finance lease cost:
Amortization of assets	2.3
Interest on lease liabilities	1.7
Total net lease cost	$	24.3

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Notes to Consolidated Financial Statements - (continued)

Supplemental balance sheet information related to leases is as follows (in millions, except lease term and discount rate):

	December 31, 2019
Operating leases:
Operating lease right-of-use assets	$	161.9
Operating lease liabilities	$	195.8
Finance leases:
Property and equipment, at cost	$	34.9
Accumulated amortization	(5.0		)
Property and equipment, net	$	29.9
Finance lease liabilities	$	31.8
Weighted average remaining lease term (in years):
Operating leases	15.8
Finance leases(a)	18.1
Weighted average discount rate:
Operating leases	3.9		%
Finance leases(a)	4.9		%

(a) Excludes the 999-year ground lease in Dublin, the Republic of Ireland.

Supplemental cash flow and other information related to leases is as follows (in millions):

	Year Ended December 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	22.1
Operating cash flows from finance leases	1.7
Financing cash flows from finance leases	2.9
Non-cash right-of-use assets obtained in exchange for lease liabilities:
Operating leases	$	175.1
Finance leases	0.8

Maturities of lease liabilities were as follows (in millions):

	As of December 31, 2019
	Operating Leases			Finance Leases
2020	$	22.4		$	5.0
2021	21.0			4.1
2022	22.4			2.9
2023	18.5			1.9
2024	13.9			1.4
Thereafter	165.4			31.1
Total lease payments	$	263.6		$	46.4
Less: Imputed interest	(67.8		)	(14.6		)
Total lease obligations	$	195.8		$	31.8

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CYRUSONE INC.

Notes to Consolidated Financial Statements - (continued)

Disclosures related to periods prior to adoption of the New Accounting Standard for Leases

The following table summarizes aggregate minimum principal payments of the finance lease obligations and future minimum lease payments required under operating leases for the five years subsequent to December 31, 2018, and thereafter (in millions):

	Operating Leases		Capital Leases		Lease Financing Arrangements
2019	$	5.0	$	2.7	$	15.0
2020	4.9		2.8		27.6
2021	3.7		2.9		11.4
2022	3.7		2.0		11.6
2023	3.5		1.0		10.0
Thereafter	43.4		22.0		89.1
Total lease payments	$	64.2	$	33.4	$	164.7

7. Acquisitions and Purchases of Fixed Assets

Land for future development

During the year ended December 31, 2019, the Company purchased approximately 74 acres of land for $54.7 million in Dublin, the Republic of Ireland, San Antonio, Santa Clara and Council Bluffs, Iowa. During the year ended December 31, 2018, the Company purchased approximately 182 acres of land for $182.3 million in Dallas, Frankfurt, Germany, Northern Virginia, Phoenix and Santa Clara.

Leases of real estate

The Company entered into a 999-year ground lease in September 2019 for 16 acres in Dublin, the Republic of Ireland, and purchased 9 acres of land totaling 24 acres for future development of a 6 MW data center. Construction commenced in July 2019. The Company prepaid $6.3 million of the lease payments and concluded that the present value of lease payments was equal to substantially all of the fair value of the land and classified the lease as a finance lease.

In August 2019, the Company entered into a lease for land comprising 3 acres and a building shell of approximately 51,000 square feet in London, UK for 25 years, including an option to extend for an additional 25 years. The Company immediately began development and construction of a 6 MW data center in London. We determined that the option to renew was not reasonably certain to be exercised. The fixed lease payments are £0.9 million per year and we classified the lease as an operating lease because the lease term was not for a major part of the remaining economic life of the building shell; nor did the lease qualify as a finance lease based on the other criteria under ASC 842.

In November 2019, the Company entered into a lease for land comprising 6.5 acres and a building shell of approximately 105,000 square feet in London, UK for 20 years, including an option to extend for an additional 15 years. We determined that the option to renew was not reasonably certain to be exercised. The fixed lease payments are £2.1 million per year and we classified the lease as an operating lease because the lease term was not for a major part of the remaining economic life of the building shell; nor did the lease qualify as a finance lease based on the other criteria under ASC 842.

Acquisitions of Data Centers

On August 24, 2018, the Company completed its previously announced acquisition of Zenium Topco Ltd. and certain other affiliated entities ("Zenium"). Zenium is a hyperscale data center provider in Europe with four operating data centers in London and Frankfurt, and land sites available for development in London and Frankfurt. In connection with the acquisition, and after giving effect to a post-closing working capital adjustment, the Company paid aggregate cash consideration of approximately $462.8 million, net of approximately $12.7 million of cash acquired, and assumed outstanding indebtedness of approximately $86.3 million. In the fourth quarter of 2018, the Company paid approximately $1.0 million related to the post-closing working capital adjustment which is included above in the aggregate cash consideration. The Company financed the acquisition with proceeds from the $300.0 million delayed draw term loan included in the 2023 Term Loan and $174.5 million of borrowings under the $1.7 Billion Revolving Credit Facility (each as defined below).

The Company evaluated the acquisition and determined that substantially all of the fair value of the gross assets was concentrated in a group of similar identifiable assets and accounted for the transaction as an acquisition of assets.

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Notes to Consolidated Financial Statements - (continued)

The consolidated financial statements of CyrusOne Inc. include the operating results of Zenium since the acquisition date, which was August 24, 2018. The following table summarizes the estimated fair values of all assets acquired at the date of acquisition:

IN MILLIONS
Investment in real estate	$	597.3
Cash and cash equivalents	12.7
Rent and other receivables	9.0
Intangible assets:
Trade name	1.8
Leasehold interest	1.7
In-place leases	61.5
Other assets	1.1
Accounts payable	(22.3		)
Deferred revenue	(3.3		)
Capital lease obligations	(25.0		)
Deferred tax liability	(72.7		)
Debt	(86.3		)
Net assets acquired attributable to CyrusOne Inc.	$	475.5
Cash acquired	(12.7		)
Net cash paid at acquisition	$	462.8

Real Estate Investments and Intangibles and Related Depreciation and Amortization

As of December 31, 2019 and 2018, major components of our real estate investments and intangibles and related accumulated depreciation and amortization are as follows (in millions):

	December 31, 2019															December 31, 2018
	Investment in Real Estate						Intangibles									Investment in Real Estate						Intangibles
	Buildings and Improvements			Equipment			Customer Relationships			In-Place Leases			Other Contractual			Buildings and Improvements			Equipment			Customer Relationships			In-Place Leases			Other Contractual
Cost	$	1,761.4		$	3,028.2		$	247.1		$	137.1		$	19.4		$	1,677.5		$	2,630.2		$	247.1		$	136.0		$	19.5
Less: accumulated depreciation and amortization	(545.1		)	(834.1		)	(151.1		)	(46.7		)	(9.7		)	(481.8		)	(572.7		)	(137.9		)	(21.1		)	(7.9		)
Net	$	1,216.3		$	2,194.1		$	96.0		$	90.4		$	9.7		$	1,195.7		$	2,057.5		$	109.2		$	114.9		$	11.6

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CYRUSONE INC.

Notes to Consolidated Financial Statements - (continued)

8. Investment in Real Estate

A schedule of our gross investment in real estate follows:

IN MILLIONS
As of December 31,		2019						2018
	Acquisition Date	Land		Building and Improvements		Equipment		Land		Building and Improvements		Equipment
Austin II	2011	$	2.0	$	23.5	$	13.3	$	2.0	$	23.4	$	8.7
Austin III	2015	3.3		12.6		64.0		3.3		11.7		47.0
Chicago - Aurora I	2016	2.4		32.4		136.3		2.4		32.4		132.9
Chicago - Aurora II	2016	2.6		22.9		70.3		2.6		22.6		68.6
Chicago - Aurora Tower	2018	—		6.4		0.9		—		4.9		0.4
Chicago - Lombard	2008	0.7		4.7		8.1		0.7		4.7		8.1
Cincinnati - 7th Street(1)	1999	0.9		114.1		37.2		0.9		114.1		37.4
Cincinnati - Blue Ash(2)	2009	—		0.7		0.2		—		0.7		0.2
Cincinnati - Goldcoast	2007	—		—		—		0.2		4.0		0.1
Cincinnati - Hamilton(2)	2007	—		43.7		7.8		—		43.7		7.9
Cincinnati - Mason	2004	—		20.3		1.7		—		20.3		1.7
Cincinnati - North Cincinnati	2008	0.9		77.8		16.0		0.9		77.9		12.4
Dallas - Allen	2017	6.5		15.0		39.5		—		—		—
Dallas - Carrollton	2012	16.1		63.8		323.3		16.1		62.2		272.5
Dallas - Lewisville(2)	2010	—		58.1		41.1		—		76.8		39.6
Florence	2005	2.2		42.0		8.7		2.2		42.0		8.4
Frankfurt I	2018	4.0		36.0		123.7		4.1		35.7		124.9
Frankfurt II	2018	7.0		135.1		93.6		7.1		89.8		53.9
Houston - Galleria(3)	2010	—		71.0		24.4		—		71.0		20.2
Houston - Houston West I	2010	1.4		85.2		51.6		1.4		85.2		51.1
Houston - Houston West II	2013	2.7		22.8		52.0		2.7		22.9		50.9
Houston - Houston West III	2013	7.2		18.1		32.3		7.2		18.0		31.4
London - Great Bridgewater(4)	2011	—		—		1.3		—		26.8		1.2
London I(2)	2018	—		44.3		46.4		—		34.1		26.3
London II(2)	2018	—		42.8		93.3		—		25.2		74.8
Northern Virginia - Sterling I	2013	6.9		20.2		62.2		6.9		20.2		60.4
Northern Virginia - Sterling II	2013	—		28.8		112.4		—		28.8		112.4
Northern Virginia - Sterling III	2017	—		22.3		61.8		—		22.2		61.3
Northern Virginia - Sterling IV	2016	4.6		20.1		78.1		4.6		20.0		76.0
Northern Virginia - Sterling V	2016	14.5		81.7		303.7		14.5		80.8		295.8
Northern Virginia - Sterling VI	2018	9.7		60.2		196.9		—		—		77.5
Northern Virginia - Sterling VIII	2018	9.1		7.0		28.0		—		—		—
Norwalk I(4)	2015	—		1.7		10.6		—		13.6		10.1
Phoenix - Chandler I	2011	10.5		58.3		71.5		10.5		58.3		68.7
Phoenix - Chandler II	2014	—		16.2		39.8		—		16.2		39.4
Phoenix - Chandler III	2016	—		11.4		51.3		—		11.4		50.8
Phoenix - Chandler IV	2017	—		18.4		44.3		—		18.4		43.3
Phoenix - Chandler V	2017	—		12.1		54.6		—		10.7		53.4
Phoenix - Chandler VI	2016	2.4		23.3		101.7		2.4		23.3		100.3
Phoenix - Chandler VII	2016	4.2		0.8		0.4		—		—		—
Raleigh-Durham I	2017	2.1		79.8		80.0		2.1		79.8		75.4
San Antonio I	2011	4.6		31.7		36.3		4.6		31.7		35.3
San Antonio II	2013	7.0		30.3		61.0		7.0		30.3		60.8
San Antonio III	2017	—		40.2		99.5		—		40.2		99.0

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Notes to Consolidated Financial Statements - (continued)

IN MILLIONS
As of December 31,		2019						2018
		Land		Building and Improvements		Equipment		Land		Building and Improvements		Equipment
San Antonio IV	2017	$	—	$	56.3	$	50.6	$	—	$	42.1	$	48.2
Santa Clara II	2019	—		2.7		—		—		—		—
Singapore - Inter Business Park(4)	2011	—		—		—		—		—		—
Somerset I	2017	12.1		132.1		101.8		12.1		125.8		91.0
South Bend - Crescent(2)	2008	—		—		—		—		1.7		0.2
South Bend - Monroe	2007	—		1.9		0.3		—		2.5		0.4
Stamford - Omega(4)	2015	—		0.1		0.8		—		2.6		0.7
Stamford - Riverbend(4)	2015	—		0.9		8.6		—		2.9		7.8
Totowa - Commerce(4)	2015	—		0.4		1.7		—		4.1		1.7
Totowa - Madison(4)	2015	—		6.1		60.1		—		28.5		57.7
Wappingers Falls I(4)	2015	—		3.1		23.2		—		11.3		22.0
Total		$	147.6	$	1,761.4	$	3,028.2	$	118.5	$	1,677.5	$	2,630.2
Land held for future development		$	206.0	$	—	$	—	$	176.4	$	—	$	—

1) The information provided for the Cincinnati - 7th Street property includes data for two facilities, one of which we lease and one of which we own.

2) Indicates properties in which we hold a leasehold interest in the building shell and land. All data center infrastructure has been constructed by us and is owned by us.

3) Indicates properties in which we hold a leasehold interest in land. All data center infrastructure has been constructed by us and is owned by us.

4) Indicates properties in which we hold a leasehold interest in the building shell, land, and all data center infrastructure.

As of December 31, 2019 and 2018, construction in progress includes $61.8 million and $69.1 million of land which is under active development, respectively.

In addition, construction in progress was $946.3 million and $744.9 million as of December 31, 2019 and December 31, 2018, respectively, as we continue to build data center facilities.

For the year ended December 31, 2019, our capital expenditures were $876.4 million, as shown on the statement of cash flows. Substantially all of our investing activity related to our development and acquisition activities. Our capital expenditures for 2019 primarily related to the acquisition of land for future development and continued development in key markets, primarily in Amsterdam, Austin, Dallas, Frankfurt, London, Northern Virginia, Phoenix and Raleigh-Durham. Included in capital expenditures are land purchases of $54.7 million in Santa Clara, San Antonio, Dublin and Council Bluffs for future development.

For the year ended December 31, 2018, our capital expenditures were $1,328.5 million, as shown on the statement of cash flows. This included the purchase price of the properties acquired in the Zenium acquisition on August 24, 2018 for $462.8 million and $865.7 million for other developments primarily in Chicago, Cincinnati, Dallas, Northern Virginia, Phoenix and San Antonio; and the purchase of parcels of land in Phoenix, Northern Virginia, Allen, Amsterdam, Santa Clara and Frankfurt for future development.

For the year ended December 31, 2019, impairment charges of $0.7 million were recognized primarily due to an impairment on the South Bend - Monroe facility, which is being actively marketed for sale. No impairment charges were recognized during the year ended December 31, 2018.

9. Equity Investments

The Company has an equity investment in GDS, a developer and operator of high-performance, large-scale data centers in China. We account for our equity investment in GDS using the fair value method. On October 18, 2017, the Company purchased newly issued unregistered ordinary shares equivalent to 8.0 million American depository shares (ADS) at a price per Class A ordinary share equivalent to $12.45 per ADS, a 4% discount to the October 17, 2017 closing price, for a total investment of $100.0 million. Each ADS is equivalent to eight ordinary shares. In April 2019, we sold approximately 5.7 million GDS ADSs for a total sales price of approximately $199.0 million. We continue to hold approximately 2.3 million GDS ADSs. As of December 31, 2019 the ADS Class A ordinary share equivalent was $51.58 per ADS for a total fair value of $118.7 million.

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Notes to Consolidated Financial Statements - (continued)

IN MILLIONS	Year Ended December 31, 2019		Year Ended December 31, 2018
Net gain on marketable equity investment	$	132.3	$	9.9
Less: Net gain recognized on marketable equity investment sold	66.7		—
Unrealized gain on marketable equity investment	$	65.6	$	9.9

The gain on investment is recognized in the Consolidated Statements of Operations in gain on marketable equity investment.

On October 8, 2018, the Company made an $11.9 million investment in exchange for a 10% equity interest in ODATA Brasil S.A. and ODATA Colombia S.A.S. (collectively "ODATA"). ODATA, a Brazilian headquartered company, specializes in providing colocation services to wholesale customers, such as hyperscale cloud providers, financial services and telecommunications companies, and also to enterprises across multiple industries. On October 30, 2018, the Company made an additional investment totaling $0.7 million in ODATA Colombia S.A.S ("ODATA Colombia"). In connection with these investments, CyrusOne and ODATA entered into a commercial agreement covering leasing activity with CyrusOne customers in the ODATA portfolio. In addition, our Chief Technology Officer joined the ODATA board of directors in October 2018. In evaluating the appropriate accounting method for its investment in ODATA, the Company considered its right to appoint a director to the ODATA board of directors, as well as other relevant factors, in evaluating the Company’s ability to exercise significant influence over the operating and financial policies of ODATA and concluded that the investment should be accounted for under the cost method. During the year ended December 31, 2019, the Company made additional investments totaling $3.8 million in ODATA.

10. Goodwill, Intangible and Other Long-Lived Assets

The carrying amount of goodwill was $455.1 million as of December 31, 2019 and 2018. See Note 7, Acquisition and Purchase of Fixed Assets, for the explanation of changes to intangible assets.

Summarized below are the carrying values for the major classes of intangible assets:

IN MILLIONS
For the year ended December 31,		2019							2018
	Weighted- Average  Remaining Life (in years)	Gross Carrying Amount		Accumulated Amortization			Total		Gross Carrying Amount		Accumulated Amortization			Total
Customer relationships	10	$	247.1	$	(151.1	)	$	96.0	$	247.1	$	(137.9	)	$	109.2
Trademark/tradename	4	11.5		(7.8		)	3.7		11.5		(6.7		)	4.8
Favorable leasehold interest	35	5.6		(1.2		)	4.4		5.7		(0.7		)	5.0
In-place customer leases	5	137.1		(46.7		)	90.4		136.0		(21.1		)	114.9
Above and below market leases	6	2.3		(0.7		)	1.6		2.3		(0.5		)	1.8
Total		$	403.6	$	(207.5	)	$	196.1	$	402.6	$	(166.9	)	$	235.7

There were no goodwill or intangible asset impairments for the years ended December 31, 2019 or 2018.

Amortization expense for acquired intangible assets was $39.9 million, $30.6 million and $25.1 million for the years ended December 31, 2019, 2018 and 2017, respectively.

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CYRUSONE INC.

Notes to Consolidated Financial Statements - (continued)

The following table presents estimated amortization expense for each of the next five years and thereafter, commencing January 1, 2020:

IN MILLIONS	Total
2020	$	39.3
2021	32.0
2022	28.6
2023	20.7
2024	18.6
Thereafter	56.9
Total	$	196.1

11. Other Assets

As of December 31, 2019 and 2018, the components of other assets are as follows (in millions):

	12/31/2019		12/31/2018
Deferred leasing and other contract costs	$	53.2	$	43.6
Prepaid expenses	22.1		26.4
Non-real estate assets, net	16.3		18.4
Derivative assets	3.5		—
Other assets	18.8		22.9
Total	$	113.9	$	111.3

Non-real estate assets, net primarily include administrative related equipment and office leasehold improvements, depreciated or amortized over the shorter of the assets useful life or the related lease term. Other assets primarily includes land deposits, fuel inventory, notes receivable, net deferred tax assets and other deferred costs.

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Notes to Consolidated Financial Statements - (continued)

12. Debt

As of December 31, 2019 and 2018, the components of debt are as follows (unless otherwise noted, interest rate and maturity date information are as of December 31, 2019) (in millions):

	December 31, 2019			December 31, 2018			Interest Rate(a)		Maturity Date
$3.0 Billion Credit Facility:
$1.7 Billion Revolving Credit Facility:									March 2022(b)
US Revolver(a)	$	555.0		$	—		Monthly LIBOR + 1.20%
EUR Revolver	33.6			143.0			Monthly EURIBOR + 1.20%
GBP Revolver(a)	26.4			—			Monthly LIBOR + 1.20%
2023 Term Loan	800.0			1,000.0			Monthly LIBOR + 1.35%		March 2023
2025 Term Loan	300.0			300.0			Monthly LIBOR + 1.65%		March 2025
Old 2024 Notes, including bond premium of $5.5 million	—			705.5			5.000	%	March 2024
Old 2027 Notes, including bond premium of $9.1 million	—			509.1			5.375	%	March 2027
2024 Notes, including bond discount of $0.8 million	599.2			—			2.900	%	November 2024
2029 Notes, including bond discount of $1.8 million	598.2			—			3.450	%	November 2029
Deferred financing costs	(25.8		)	(32.9		)	—		—
Total	$	2,886.6		$	2,624.7

(a) - Monthly USD LIBOR and GBP LIBOR as of December 31, 2019 was 1.80% and 0.71%, respectively.

(b) - The Company has an option to exercise a one-year extension option, subject to certain conditions.

Credit facilities

On March 29, 2018, the Company entered into a new $3.0 billion unsecured credit facility. The new credit facility consists of a $1.7 billion revolving credit facility ("$1.7 Billion Revolving Credit Facility"), which includes a $750.0 million multicurrency borrowing sublimit, a 5-year term loan with commitments totaling $1.0 billion ("2023 Term Loan") and a $300.0 million 7-year term loan ("2025 Term Loan") (collectively, the "$3.0 Billion Credit Facility"). We borrowed $700.0 million under the 2023 Term Loan on March 31, 2018, and the 2023 Term Loan includes a delayed draw feature which allows the Company to draw $300.0 million in up to three tranches over a six-month period in multiple currencies. The Company exercised the draw as a part of the acquisition of Zenium. The $1.7 Billion Revolving Credit Facility has the option to borrow in non-USD currencies and includes a one-year option which, if exercised by the Company, would extend the final maturity to March 2023. The $3.0 Billion Credit Facility also includes an accordion feature providing for an aggregate increase in the revolving and term loan components to $3.8 billion, subject to certain conditions. The $1.7 Billion Revolving Credit Facility, 2023 Term Loan and 2025 Term Loan are prepayable at our option. In April 2019, the Company used the proceeds from the sale of GDS shares to pay down $200.0 million of the 2023 Term Loan.

On March 29, 2018, borrowings of $1.0 billion under the $3.0 Billion Credit Facility were used to fully retire a previous $2.0 billion credit facility. The previous $2.0 billion credit facility consisted of a $1.1 billion senior unsecured revolving credit facility ("$1.1 Billion Revolving Credit Facility"), a $250.0 million 5-year term loan and a $650.0 million 7-year term loan ("2022 Term Loan") (collectively, the "$2.0 Billion Credit Facility"). The aggregate outstanding principal balance of the $2.0 Billion Credit Facility at the date of the prepayment was $900.0 million and we recognized a loss on early extinguishment of debt of $3.1 million.

In August 2018, the Company financed the acquisition of Zenium with proceeds from its $300.0 million delayed draw term loan

included in the 2023 Term Loan and $174.5 million of borrowings under the $1.7 Billion Revolving Credit Facility. In connection with the acquisition, the Company assumed a six-year, €100.0 million construction facility, which was paid off in December 2018.

Prior to obtaining an investment grade rating in September 2019 and shifting to a ratings-based pricing grid under the $1.7 Billion Revolving Credit Facility, we paid commitment fees for the unused amount of borrowings on the $1.7 Billion Revolving Credit Facility and fees on any outstanding letters of credit equal to 0.25% per annum of the actual daily amount by which the aggregate revolving commitments exceed the sum of outstanding revolving loans and letter of credit obligations. Following the shift to a

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ratings-based pricing grid, we pay a facility fee calculated based on the aggregate revolving commitments. The facility fee rate varies based on ratings-based pricing levels, and is currently equal to 0.25% per annum of the aggregate revolving commitments. We also paid commitment fees on the $1.1 Billion Revolving Credit Facility through its retirement in March 2018. The facility fee or commitment fee, as applicable, was $2.6 million, $3.8 million and $1.9 million for the years ended December 31, 2019, 2018 and 2017, respectively.

As of December 31, 2019, we had $800.0 million, $300.0 million and $615.0 million outstanding under the 2023 Term Loan, the 2025 Term Loan and the $1.7 Billion Revolving Credit Facility, respectively, and additional borrowing capacity under the $3.0 Billion Credit Facility was approximately $1.1 billion ($1.1 billion under the $1.7 Billion Revolving Credit Facility and zero under the 2023 Term Loan), net of $8.2 million of outstanding letters of credit.

Senior notes

On December 5, 2019, the Operating Partnership and CyrusOne Finance Corp., a single-purpose finance subsidiary, both wholly-owned subsidiaries of the Company (together, the "Issuers") completed a public offering of $600.0 million aggregate principal amount of 2.900% senior notes due 2024 (the "2024 Notes") and $600.0 million aggregate principal amount of 3.450% senior notes due 2029 (the “2029 Notes”). The Company received proceeds of $1,197.4 million, net of underwriting costs and other deferred financing costs. The Company used the proceeds to finance the repurchase of all of its Old 2024 Notes and all of its Old 2027 Notes (each as defined below and together, the "Existing Notes"), including the payment of consent payments, for the redemption and discharge of Existing Notes that remained outstanding after the completion of the tender offers and consent solicitations, for the payment of related premiums, fees, discounts and expenses and for general corporate purposes. In connection with the repurchase of the Existing Notes, the Company recognized a loss on early extinguishment of debt of $71.8 million.

The 2024 Notes and 2029 Notes are senior unsecured obligations of the Issuers guaranteed by CyrusOne Inc., which rank equally in right of payment with all existing and future unsecured senior indebtedness of the Issuers. The 2024 Notes and 2029 Notes are effectively subordinated in right of payment to any secured indebtedness of the Issuers to the extent of the value of the assets securing such indebtedness. The 2024 Notes and 2029 Notes may be redeemed at our option prior to their scheduled maturity dates at the prices and premiums and on the terms set forth in the respective indentures governing the notes.

In September 2019, CyrusOne LP received an investment grade rating and the guarantees of the $3.0 Billion Credit Facility by CyrusOne LP’s existing domestic subsidiaries (“Subsidiary Guarantors”) were released. In connection therewith, the guarantees of the Old 2024 Notes and the Old 2027 Notes by such guarantors were also released.

On March 17, 2017, the Operating Partnership and CyrusOne Finance Corp., completed an offering of $500.0 million aggregate principal amount of 5.000% senior notes due 2024 ("Original Old 2024 Notes") and $300.0 million aggregate principal amount of 5.375% senior notes due 2027 ("Original Old 2027 Notes") in a private offering. The Company received proceeds of $791.2 million, net of underwriting costs and other deferred financing costs.

On November 3, 2017, the Issuers completed an offering of $200.0 million aggregate principal amount of 5.000% senior notes due 2024 ("Additional Old 2024 Notes") and $200.0 million aggregate principal amount of 5.375% senior notes due 2027 ("Additional Old 2027 Notes") in a private offering. The Additional Old 2024 Notes have terms substantially identical to the Original Old 2024 Notes and the Additional Old 2027 Notes have terms substantially identical to the Original Old 2027 Notes. The Original Old 2024 Notes and the Additional Old 2024 Notes form a single class of securities ("Old 2024 Notes"), and the Original Old 2027 Notes and the Additional Old 2027 Notes form a single class of securities ("Old 2027 Notes"). The Company received proceeds of $416.1 million, net of underwriting costs of $4.4 million. The Original Old 2024 Notes and the Additional Old 2024 Notes are referred to as the Old 2024 Notes and the Original Old 2027 Notes and the Additional Old 2027 Notes are referred to as the Old 2027 Notes. On January 8, 2018, the Issuers completed an exchange offer with respect to the Old 2024 Notes and the Old 2027 Notes and all validly tendered Old 2024 Notes and Old 2027 Notes were exchanged for notes registered with the SEC. In December 2019, all of the Old 2024 Notes and Old 2027 Notes were repurchased as described above.

On November 20, 2012, wholly-owned subsidiaries of the Company issued $525.0 million of 6.375% senior notes due 2022 (the "6.375% Notes"). In March 2017, the Company repurchased all of the 6.375% Notes with an aggregate face value of $474.8 million, a net carrying value of $469.0 million, for total consideration of $515.1 million, including accrued and unpaid interest of $10.3 million. In connection with the debt prepayment, we recognized a loss on early extinguishment of debt of $36.5 million.

Financial debt covenants

Our debt agreements contain customary provisions with respect to events of default, affirmative and negative covenants and borrowing conditions. The most restrictive covenants are generally included in the $3.0 Billion Credit Agreement. The $3.0 Billion Credit Agreement requires us to maintain certain financial covenants including the following, in each case on a consolidated basis,

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Notes to Consolidated Financial Statements - (continued)

a minimum fixed charge ratio, maximum total and secured leverage ratios, maximum net operating income to debt service ratio and a maximum ratio of unsecured indebtedness to unencumbered asset value. In order to continue to have access to amounts available under the $3.0 Billion Credit Agreement, the Company must remain in compliance with all of that agreement's covenants. As of December 31, 2019, we believe we are in compliance with all provisions of our debt agreements.

Debt Maturities

The following table summarizes aggregate maturities of the $3.0 Billion Credit Facility and 2024 Notes and 2029 Notes for the five years subsequent to December 31, 2019, and thereafter: 

IN MILLIONS	$3.0 Billion Credit Facility(a)		2024 Notes and 2029 Notes		Total
2020	$	—	$	—	$	—
2021	—		—		—
2022	615.0		—		615.0
2023	800.0		—		800.0
2024	—		600.0		600.0
Thereafter	300.0		600.0		900.0
Total debt	$	1,715.0	$	1,200.0	$	2,915.0

(a) - The Company has an option to exercise a one-year extension option on the $1.7 Billion Revolving Credit Facility, subject to certain conditions, which would extend the final maturity to March 2023.

13. Fair Value of Financial Instruments and Hedging Activities

Fair value measurements are based on the assumptions that market participants would use in pricing the asset or liability. As a basis for considering assumptions in fair value measurements, a fair value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity (observable inputs that are classified within Levels 1 and 2 of the hierarchy) and the reporting entity’s own assumptions about market participant assumptions (unobservable inputs classified within Level 3 of the hierarchy) has been established. 

Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets and liabilities that we have the ability to access. Level 2 inputs are inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. Level 2 inputs may include quoted prices for similar assets and liabilities in active markets, as well as inputs that are observable for the asset or liability (other than quoted prices), such as interest rates and yield curves that are observable at commonly quoted intervals. Level 3 inputs are unobservable inputs for the asset or liability that are typically based on an entity’s own assumptions, as there is little, if any, related market activity. In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the fair value measurement falls is based on the lowest level input that is significant to the fair value measurement in its entirety. Our assessment of the significance of a particular input to the fair value measurement requires judgment and considers factors specific to the asset or liability.

The fair value of cash and cash equivalents, rent and other receivables, construction costs payable, dividends payable and accounts payable and accrued expenses approximate their carrying value because of the short-term nature of these financial instruments. The carrying value, exclusive of deferred financing costs, for the revolving credit facilities and the floating rate term loans approximate estimated fair value as of December 31, 2019 and 2018, due to the floating rate nature of the interest rates and the stability of our credit ratings.

We determine the fair value of our derivative financial instruments using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves, foreign exchange rates and implied volatilities. We determine the fair values of our interest rate swaps using the market standard methodology of netting the discounted future fixed cash receipts or payments and the discounted expected variable cash payments. We base the variable cash payments on an expectation of future interest rates, or forward curves, derived from observable market interest rate curves. We base the fair values of our net investment hedges on the change in the spot rate at the end of the period as compared with the strike price at inception.

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We incorporate credit valuation adjustments to appropriately reflect nonperformance risk for us and the respective counterparty in the fair value measurements. In adjusting the fair value of our derivative contracts for the effect of nonperformance risk, we consider the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts and guarantees.

We have determined that the majority of the inputs used to value our derivatives fall within Level 2 of the fair value hierarchy. Although the credit valuation adjustments associated with our derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by us and our counterparties, we assess the significance of the impact of the credit valuation adjustments on the overall valuation of our derivative positions and have determined that the credit valuation adjustments are not significant to the overall valuation of our derivatives.

The carrying value and fair value of other financial instruments are as follows (in millions):

IN MILLIONS
For the year ended December 31,	2019				2018
	Carrying Value		Fair Value		Carrying Value		Fair Value
Old 2024 Notes - 5.000%	$	—	$	—	$	705.5	$	684.1
Old 2027 Notes - 5.375%	—		—		509.1		488.0
2024 Notes - 2.900%	599.2		602.1		—		—
2029 Notes - 3.450%	598.2		603.1		—		—
GDS Equity investment	118.7		118.7		185.5		185.5

The fair values of our 2024 Notes and 2029 Notes as of December 31, 2019 and Old 2024 Notes and Old 2027 Notes as of December 31, 2018 were based on the quoted market prices for these notes, which is considered Level 1 of the fair value hierarchy. The fair value of the GDS equity investment as of December 31, 2019 and 2018 were based on the quoted market price for the stock which is considered Level 1 of the fair value hierarchy.

For the year ended December 31, 2019, we recognized impairment losses of $0.7 million included in Impairment losses in our Consolidated Statements of Operations. We utilize estimates of the fair value of assets to determine impairment losses. These estimates include Level 3 inputs including market rents, expected occupancy and estimates of additional capital expenditures, and cashflows from each investment. There were no impairment losses for the year ended December 31, 2018.

Hedging Activities

When we use derivative instruments, it is generally to reduce our exposure to fluctuations in interest rates and foreign currency exchange rate movements. We have not entered into, and do not plan to enter into, financial instruments for trading or speculative purposes. To manage foreign currency exposure, we have entered into Euro denominated debt and cross-currency swaps to hedge the Company's net investment in its Euro functional currency consolidated subsidiaries and the variability in EUR-USD exchange rate.

Accounting for changes in the fair value of derivatives depends on the intended use of the derivative and the designation of the derivative, including whether we have elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Derivatives designated and qualifying as a hedge of the exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as foreign currency risk or interest rate risk, are considered fair value hedges. Derivatives designated and qualifying as a hedge of the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. Hedge accounting generally provides for the matching of the timing of gain or loss recognition on the hedging instrument with the recognition of the changes in the fair value of the hedged asset or liability that are attributable to the hedged risk in a fair value hedge or the earnings effect of the hedged forecasted transactions in a cash flow hedge.

For derivatives designated as "cash flow" hedges, the change in the fair value of the derivative is initially reported in other comprehensive income ("OCI") in our Consolidated Statements of Comprehensive Income (Loss) and subsequently reclassified into gain (loss) when the hedged transaction affects earnings, or the hedging relationship is no longer highly effective. We assess the effectiveness of each hedging relationship whenever financial statements are issued, or earnings are reported and at least every three months. We also use derivatives, such as foreign currency swaps, that are not designated as hedges to manage foreign currency exchange rate risks. The changes in fair values of these derivatives that were not designated or did not qualify as hedging instruments

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Notes to Consolidated and Combined Financial Statements - (continued)

are immediately, recognized in earnings within the line item Foreign currency and derivative losses, net in the Consolidated Statements of Operations.

The following table summarizes the Company's derivative positions as of December 31, 2019 and 2018 (in millions):

						December 31, 2019				December 31, 2018
		Maturity Date	Notional Amount		Hedged Risk	Asset		Liability		Asset		Liability
Undesignated derivatives
Cross Currency Swaps
	EUR - USD	01/15/2020	$	265.3	Foreign currency exchange	$	—	$	2.1	$	—	$	—
	EUR - USD	01/15/2020	25.6		Foreign currency exchange	—		0.2		—		—
Designated derivatives
Cross Currency Swaps
	EUR - USD	3/29/2023	250.0		Net investment hedge	—		3.8		—		—
	EUR - USD	3/29/2023	250.0		Net investment hedge	—		3.9		—		—
	EUR - USD	1/15/2020	155.9		Net investment hedge	—		1.4		—		—
Interest Rate Swaps
	USD Libor	3/29/2023	300.0		Interest rate hedge - Float to fixed	3.5		—		—		—
Total			$	1,246.8		$	3.5	$	11.4	$	—	$	—

Cross-Currency Swaps

The Company has entered into cross-currency swaps whereby the Company pays floating interest rate and receives floating interest rate to hedge the variability of future cash flows attributable to changes in the 1-month USD LIBOR versus EUR LIBOR rates (a pay-floating, receive-floating interest rate swap).

As of December 31, 2019, the Company has the following cross-currency contracts:

• EUR/USD contracts to sell $446.8 million and purchase €401.1 million maturing in January 2020 representing a fair value liability of $3.7 million.

• EUR/USD contracts to sell $500.0 million and purchase €450.7 million maturing in March 2023 representing a fair value liability of $7.7 million.

The pay-floating, receive-floating interest rate swap payments are recognized in interest expense, net in the Consolidated Statements of Operations. The Company recognized a $7.5 million loss on cross-currency contracts for the year ended December 31, 2019, which are recognized in Foreign currency and derivative losses, net in the Consolidated Statements of Operations.

Interest Rate Swaps

On September 3, 2019, the Company entered into a floating-fixed interest rate swap agreement to convert $300.0 million outstanding of term loan to 1.19% fixed rate debt.

Net Investment Hedges

Exchange rate variations impact our financial results because the financial results of our foreign subsidiaries are translated to U.S. dollars each period, with the effect of exchange rate variations being recorded in OCI as part of the cumulative foreign currency translation adjustment. As a result, changes in the value of our borrowings under the foreign currency denominated revolver under our $1.7 Billion Revolving Credit Facility and synthetically swapped debt will be reported in the same manner as foreign currency translation adjustments, which are recorded in OCI as part of the cumulative foreign currency translation adjustment. As of December 31, 2019, our cross-currency swaps were a liability of $11.4 million reported in Other liabilities, and interest rate swaps were an asset of $3.5 million reported in Other assets.

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Notes to Consolidated and Combined Financial Statements - (continued)

The fair values of qualifying instruments used in hedging transactions as of December 31, 2019 and 2018 are as follows (in millions):

	Balance Sheet Location	December 31, 2019		December 31, 2018
Derivatives Designated as Hedging Instruments
Assets:
Interest Rate Swap	Other Assets	$	3.5	$	—
Total		$	3.5	$	—
Liabilities:
Cross-Currency Swaps	Other Liabilities	9.1		—
Total		$	9.1	$	—

The following table presents the effect of our derivative financial instruments on our accompanying consolidated financial statements (in millions):

	December 31, 2019			December 31, 2018
Derivatives in Cash Flow Hedging Relationships
Cross-Currency Swaps:
Amount of gain (loss) recognized in OCI for derivatives	$	(0.7	)	$	—
Amount of gain (loss) reclassified from accumulated OCI for derivatives	$	—		$	—
Amount of gain (loss) recognized in earnings	$	(7.5	)	$	—

During the next 12 months, we estimate that immaterial amounts will be reclassified from "Accumulated OCI" to net income (loss).

14. Employee Benefit Plans

Currently, our employees participate in health care plans sponsored by CyrusOne, which provide for medical, dental and vision. We incurred $3.9 million, $3.3 million and $2.7 million of expenses related to these plans for the years ended December 31, 2019, 2018 and 2017, respectively.

CyrusOne offers a defined contribution 401(k) retirement savings plan to its employees. CyrusOne's matching contribution to its retirement savings plan was $1.9 million, $1.8 million and $1.5 million for the years ended December 31, 2019, 2018 and 2017, respectively.

15. Income (Loss) per Share

Basic income (loss) per share is calculated using the weighted average number of shares of common stock outstanding during the period. In addition, net income (loss) applicable to participating securities and the participating securities are both excluded from the computation of basic income (loss) per share.

Diluted income (loss) per share is calculated using the weighted average number of shares of common stock outstanding during the period, including restricted stock outstanding. If there is net income during the period, the dilutive impact of common stock equivalents outstanding are also reflected.

On November 20, 2019, CyrusOne Inc. entered into a forward sale agreement with Jefferies LLC with respect to 1.6 million shares of its common stock at an initial forward price of $61.67 per share. The hedge completion date was November 29, 2019. The Company has twelve months to settle the forward sale agreement.

On September 28, 2018, CyrusOne Inc. completed a public offering of 6.7 million shares of its common stock for $397.3 million, net of underwriting discounts and expenses of approximately $18.1 million. In connection with this offering, on September 25, 2018, CyrusOne Inc. entered into a forward sale agreement with Morgan Stanley & Co. LLC with respect to an additional 2.5 million shares of its common stock. On December 28, 2018, the Company effected a full physical settlement of the previously announced forward sale agreement entered into with Morgan Stanley & Co. LLC. Upon settlement, the Company issued all such shares to Morgan Stanley & Co. LLC in its capacity as forward purchaser, in exchange for net proceeds of approximately $148.2 million, in accordance with the provisions of the forward sales agreement. This agreement and the settlement thereof had no effect on our diluted share count at December 31, 2018.

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Notes to Consolidated Financial Statements - (continued)

The following table reflects the computation of basic and diluted net (loss) income per share:

IN MILLIONS, except per share amounts	Year Ended						Year Ended						Year Ended
For December 31,	2019						2018						2017
	Basic			Diluted			Basic			Diluted			Basic			Diluted
Numerator:
Net income (loss)	$	41.4		$	41.4		$	1.2		$	1.2		$	(83.5	)	$	(83.5	)
Less: Restricted stock dividends	(0.7		)	(0.7		)	(1.1		)	(1.1		)	(0.9		)	(0.9		)
Net income (loss) available to stockholders	$	40.7		$	40.7		$	0.1		$	0.1		$	(84.4	)	$	(84.4	)
Denominator:
Weighted average common outstanding-basic	112.1			112.1			99.8			99.8			88.9			88.9
Performance-based restricted stock and units(1)				0.4						0.6						—
Weighted average shares outstanding-diluted				112.5						100.4						88.9
EPS:
Net income (loss) per share-basic	$	0.36					$	—					$	(0.95	)
Effect of dilutive shares:
Net income (loss) per share-diluted				$	0.36					$	—					$	(0.95	)

⁽¹⁾ We have excluded 0.4 million weighted average shares of restricted stock, and 0.1 million of weighted average stock options which are securities convertible into common stock from our diluted earnings per share as of December 31, 2017. These amounts were deemed anti-dilutive.

16. Stockholders' Equity

Capitalization

During the first quarter of 2018, the Company entered into sales agreements pursuant to which the Company may issue and sell from time to time shares of its common stock having an aggregate sales price of up to $500.0 million (the "2018 ATM Stock Offering Program"). During the fourth quarter of 2018, the Company entered into sales agreements pursuant to which the Company may issue and sell from time to time shares of its common stock having an aggregate sales price of up to $750.0 million (the "New 2018 ATM Stock Offering Program"). The New 2018 ATM Stock Offering Program replaced the 2018 ATM Stock Offering Program. During the year ended December 31, 2019, the Company sold approximately 6.5 million shares of its common stock under its New 2018 ATM Stock Offering Program at an average price of $55.43, generating net proceeds of approximately $355.6 million, net of sales commissions, underwriting discounts and estimated expenses of $4.3 million. As of December 31, 2019, there was approximately $290.1 million under the New 2018 ATM Stock Offering Program available for future offerings. During the year ended December 31, 2018, the Company sold 12.2 million common shares at an average price of $59.28. At December 31, 2019, the Company had approximately 114.8 million shares of common stock outstanding.

On November 20, 2019, CyrusOne Inc. entered into a forward sale agreement with a financial institution acting as forward purchaser under the New 2018 ATM Stock Offering Program with respect to 1.6 million shares of its common stock at an initial forward price of $61.67 per share. The Company has twelve months to settle the forward sale agreement. The Company did not receive any proceeds from the sale of its common shares by the forward purchasers. The Company currently expects to fully physically settle the forward equity sale agreement and receive cash proceeds upon one or more settlement dates at the Company’s discretion, prior to the final settlement dates under the forward equity sale agreement in November 2020, in which case we expect to receive aggregate net cash proceeds at settlement equal to the number of shares specified in such forward equity sale agreement multiplied by the relevant forward price per share. The weighted average forward sale price that we expect to receive upon physical settlement of the agreement will be subject to adjustment for (i) a floating interest rate factor equal to a specified daily rate less a spread, (ii) the forward purchasers’ stock borrowing costs and (iii) scheduled dividends during the term of the agreement. We have not settled any portion of this forward equity sale agreement as of the date of this filing.

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Notes to Consolidated Financial Statements - (continued)

Dividends

We have declared cash dividends on common shares and distributions on operating partnership units for the years ended December 31, 2019 and 2018 as presented in the table below:

Record date	Payment date	Cash dividend per share or operating partnership unit
March 29, 2018	April 13, 2018	$0.46
June 29, 2018	July 13, 2018	$0.46
September 28, 2018	October 12, 2018	$0.46
January 2, 2019	January 11, 2019	$0.46
March 29, 2019	April 12, 2019	$0.46
June 28, 2019	July 12, 2019	$0.46
September 27, 2019	October 11, 2019	$0.50
January 2, 2020	January 10, 2020	$0.50

 

As of December 31, 2019 and 2018 we had a dividend payable of $58.6 million and $51.0 million, respectively. On February 19, 2020, we announced a regular cash dividend of $0.50 per common share payable to shareholders of record as of the close of business on March 27, 2020, payable on April 10, 2020.

17. Stock-Based Compensation

The board of directors of CyrusOne Inc. adopted the 2012 Long-Term Incentive Plan ("LTIP"), prior to the IPO, which was amended and restated on May 2, 2016 and February 18, 2019. The LTIP is administered by the compensation committee of the board of directors. Awards issuable under the LTIP include common stock, restricted stock, restricted stock units, stock options and other incentive awards. CyrusOne Inc. has reserved a total of 8.9 million shares of CyrusOne Inc. common stock for issuance pursuant to the LTIP, which may be adjusted for changes in capitalization and certain corporate transactions. To the extent that an award, if forfeitable, expires, terminates or lapses, or an award is otherwise settled in cash without the delivery of shares of common stock to the participant, then any unpaid shares subject to the award will be available for future grant or issuance under the LTIP. The payment of dividend equivalents in cash in conjunction with any outstanding awards will not be counted against the shares available for issuance under the LTIP. The related stock compensation expense incurred by CyrusOne Inc. is allocated to the operating partnership. Shares available under the LTIP at December 31, 2019, were approximately 4.6 million. Shares vest according to each agreement and as long as the employee remains employed with the Company. The Company has granted awards with time-based vesting, performance-based vesting and market-based vesting features. The performance-based vesting metrics granted have varied and are described in each of the grant years below.

The market-based metric is total stockholder return (TSR) compared to the MSCI US REIT Index (REIT Index) as defined in the award agreements. The market-based restricted stock/units vest annually based upon the achievement of certain criteria for each of the three-year measurement periods. In each of the first two years vesting is limited to 100% of the target. If at the end of the third year total performance over the three-year period exceeds the REIT Index by 2% or more, up to 200% of these awards may vest. The market-based awards will vest based on the below scales. The scales are linear between each point and awards are interpolated between the points.

- If CyrusOne's TSR is less than the return of the REIT Index equals 0%

- If CyrusOne's TSR is equal to or greater than the return of the REIT Index equals 100%; up to 200% if CyrusOne's TSR exceeds the return of the REIT Index by 2%

- If CyrusOne's TSR exceeds the return of the REIT Index, but is negative, any calculated vesting amount will be reduced by 50%

The Company uses the Black-Scholes option-pricing model for time and performance-based options and a Monte Carlo simulation for market-based awards. The fair values of these awards use assumptions such as volatility, risk-free interest rate, and expected term of the awards.

The holders of restricted stock have all the rights and privileges of shareholders including the right to vote. The holders of restricted stock units do not have all of the rights and privileges of shareholders and do not have the right to vote. These rights will be acquired upon the settlement of the restricted stock units and the issuance of shares. The time-based restricted stock units have the right to receive dividends that are payable within ten days following the date the dividends are payable to shareholders. Market-based restricted stock units accrue dividends which are paid upon the vesting and settlement of the units.

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Notes to Consolidated Financial Statements - (continued)

Compensation expense is measured based on the estimated grant-date fair value. Expense for time-based grants is recognized under a straight-line method. For market-based grants, expense is recognized under a graded expense attribution method. For performance-based grants, expense is recognized under a graded expense attribution method if it is probable that the performance targets will be achieved. Any dividends declared with respect to the performance and market-based shares shall be accrued by the Company and distributed on the vesting date provided that the applicable performance goal has been attained.

Stock-based compensation expense was as follows:

For the periods ended December 31,	2019		2018		2017
2014 Grants	$	—	$	—	$	0.1
2015 Grants	—		0.4		1.8
2016 Grants	1.1		5.7		6.6
2017 Grants	3.1		4.6		6.2
2018 Grants	5.4		6.8		—
2019 Grants and ESPP expense	7.1		—		—
Total	$	16.7	$	17.5	$	14.7

2014 Grants

On February 7, 2014, the Company issued performance and market-based awards under the LTIP in the form of restricted stock. For these awards, vesting was tied 50% to the achievement of a non-GAAP financial measure related to the Company's performance (cumulative Adjusted EBITDA targets, as defined in the agreement) over the 2014-2016 performance period, and 50% to a market-based performance measure. The portion of the awards tied to cumulative Adjusted EBITDA vested annually over a three-year period based on the Company attaining predetermined cumulative Adjusted EBITDA targets and as long as the employee remained employed with the Company.

The cumulative EBITDA targets are based on the below scales. The scales are linear between each point and awards are interpolated between the points.

- Below 90% of performance target equals 0%

- At 90% of performance target equals 50%

- At 100% of performance target equals 100%

- At or above 115% of performance target equals up to 200%

In addition, during the year ended December 31, 2014, the Company also granted from time-to-time a total of 46,313 additional time-based restricted shares which had an aggregate value of $1.0 million on the grant date. These shares cliff vested either one year after the grant date or three years after the grant date.

Total awards granted in 2014 had a grant date fair value of $12.9 million. As of December 31, 2019, there was no unearned compensation related to the awards granted in 2014 as all such awards are fully vested.

2015 Grants

On February 10, 2015, the Company issued awards under the LTIP in the form of options and restricted stock. The stock options are time-based and vest annually on a pro-rata basis over three years. Twenty percent of the restricted stock awards are subject to time-based vesting and eighty percent of the restricted stock awards are equally split between performance-based and market-based vesting. The performance-based metric is return on assets, which is a non-GAAP financial measure that is defined in the award agreement. The time-based restricted stock will vest pro-rata annually over three years. The performance and market-based restricted stock will vest annually based upon the achievement of certain criteria for each year of the three-year measurement periods. The first two years are capped at 100% of the target with a cumulative true-up to a maximum of 200% possible in year three.

The performance-based awards will vest based on the same scales as the awards granted during 2014.

In addition, during the year ended December 31, 2015, the Company also granted from time to time a total of 50,300 shares of time-based restricted stock and 67,012 shares of performance-based restricted stock for various new employee hires with vesting schedules ranging from annual to cliff vesting in three years.

Total awards granted in 2015 had a grant date fair value of $13.8 million. As of December 31, 2019, there was no unearned compensation related to the awards granted in 2015 as all such awards are fully vested.

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Notes to Consolidated Financial Statements - (continued)

2016 Grants

On February 1, 2016, the Company issued 641,097 shares of time, performance and market-based awards under the LTIP in the form of restricted stock. The grant date fair value of time and performance-based restricted shares was $36.99. The grant date fair value of market-based restricted shares was $43.66. The Company issued stock options on February 1, 2016. The stock option awards have a contractual life of 10 years from the award date and were granted with an exercise price equal to $36.99. The Company issued 222,461 options with a grant date fair value of $6.99.

The performance-based metric is return on assets, which is a non-GAAP financial measure and is defined in the award agreement. The time-based restricted stock awards generally vest pro-rata annually over a three-year period. The performance and market-based restricted stock awards vest annually based upon the achievement of certain criteria for each of the three-year measurement periods. The first two years are capped at 100% of the target with a cumulative true-up to a maximum of 200% possible in year three. Certain employees were also awarded time-based restricted stock that cliff vest at the end of three years. The stock options are time-based and vest annually on a pro-rata basis over three years.

The performance-based awards will vest based on the same scales as the awards granted during 2014.

In addition, during the year ended December 31, 2016, for various new employee hires, the following grants were made:

• 5,894 shares of time-based restricted stock which cliff vest in three years from the date of each grant.

• 47,667 shares of time-based restricted stock which vest annually on a pro rata basis over a three-year period from the date of each grant.

Total awards granted in 2016 had a grant date fair value of $22.6 million. As of December 31, 2019, there was no unearned compensation related to the awards granted in 2016 as all such awards are fully vested.

2017 Grants

On February 13, 2017, the Company issued time and market-based awards under the LTIP in the form of restricted stock units and restricted stock. The Company granted 119,218 time-based restricted stock units that generally vest annually on a pro-rata basis over a three-year period and 18,179 shares of time-based restricted stock that generally vest over a one-year period with a grant date fair value of $48.13, and 129,146 market-based restricted stock units, at target, with a grant date fair value of $63.23.

In addition, during the year ended December 31, 2017 the Company granted from time to time a total of 20,852 time-based restricted stock units that vest annually on a pro rata basis over a three-year period.

Total awards granted in 2017 had a grant date fair value of $15.9 million. As of December 31, 2019, unearned compensation representing the unvested portion of the awards granted in 2017 totaled $0.5 million, with a weighted average vesting period of 0.1 years.

2018 Grants

On February 26, 2018, the Company issued time and market-based awards under the LTIP in the form of restricted stock units and restricted stock. The Company granted 161,797 time-based restricted stock units that generally vest annually on a pro-rata basis over a three-year period and 17,052 shares of time-based restricted stock that generally vest over a one-year period with a grant date fair value of $51.31, and 160,266 market-based restricted stock units, at target, with a grant date fair value of $52.53.

In addition, during the year ended December 31, 2018 the Company granted from time to time a total of 40,249 time-based restricted stock units that vest annually on a pro rata basis over a three-year period.

Total awards granted in 2018 had a grant date fair value of $20.2 million. As of December 31, 2019, unearned compensation representing the unvested portion of the awards granted in 2018 totaled $5.7 million, with a weighted average vesting period of 0.8 years.

2019 Grants

On February 21, 2019, the Company issued time and market-based awards under the LTIP in the form of restricted stock units and restricted stock. The Company granted 175,073 time-based restricted stock units that generally vest annually on a pro-rata basis over a three-year period and 16,681 shares of time-based restricted stock that generally vest over a one-year period with a grant date fair value of $52.46, and 184,145 market-based restricted stock units, at target, with a grant date fair value of $43.67.

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Notes to Consolidated Financial Statements - (continued)

In addition, during the year ended December 31, 2019, the Company granted from time to time a total of 42,052 time-based restricted stock units that vest annually on a pro rata basis over a three-year period.

Total awards granted in 2019 had a grant date fair value of $20.5 million. As of December 31, 2019, unearned compensation representing the unvested portion of the awards granted in 2019 totaled $11.9 million, with a weighted average vesting period of 1.6 years.

Restricted Stock Units, Restricted Stock and Stock Option Activity

The following tables summarize the unvested restricted stock units, restricted stock and stock options activity and the weighted average fair value of these shares at the date of grant for the year ended December 31, 2019:

Restricted Stock Units ("RSU")

	2019
	Restricted Stock Units		Weighted Average Grant Date Fair Value
Outstanding January 1,	511,409		$	56.23
Granted	401,270		48.90
Vested	(187,176	)	43.37
Forfeited	(78,884	)	52.99
Outstanding December 31,	646,619		$	55.80

Restricted Stock ("RS")

	2019
	Restricted Stock		Weighted Average Grant Date Fair Value
Outstanding January 1,	419,356		$	35.73
Granted	16,681		52.46
Vested	(384,753	)	35.61
Forfeited	(34,603	)	37.09
Outstanding December 31,	16,681		$	52.46

Stock Options

	2019
	Options		Weighted Average Exercise Price
Outstanding January 1,	401,223		$	31.96
Granted	—		—
Exercised	(25,586	)	36.70
Forfeited or expired	(551	)	23.58
Outstanding December 31,	375,086		31.64
Exercisable at December 31,	375,086		31.64
Vested and expected to vest	375,086		$	31.64

The aggregate intrinsic value of options outstanding and options exercisable is based on the Company's closing stock price on the last trading day of the fiscal year for in-the-money options. The aggregate intrinsic value represents the cumulative difference between the fair market value of the underlying common stock and the option exercise prices. The total intrinsic value of options exercised during 2019 was $0.4 million, 2018 was $0.6 million and 2017 was $0.5 million.

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Notes to Consolidated Financial Statements - (continued)

The aggregate intrinsic value of both options outstanding and options exercisable at December 31, 2019 was $13.1 million.

Stock Option Assumptions

The following table summarizes the stock option assumptions for the years ended December 31, 2019, 2018 and 2017:

	Options Outstanding		Options Exercisable		Assumption Range
Exercise Prices	Number of Shares	Weighted Average Remaining Contractual Terms (Years)	Number of Shares	Weighted Average Remaining Contractual Terms (Years)	Risk-Free Interest Rate	Expected Annual Dividend Yield	Expected Terms in Years	Expected Volatility
2017
$23.58	67,322	5.3	67,322	5.3	0.92%	3.4%	6.0	35%
$28.42	143,358	7.1	95,572	7.1	1.6% - 1.75%	4.4%	5.5-6.5	32.5% - 37.5%
$30.74	12,719	7.6	8,479	7.6	1.6% - 1.75%	4.4%	5.5-6.5	32.5% - 37.5%
$36.99	192,060	8.1	64,022	8.1	1.47% - 1.64%	4.1%	5.5-6.5	27.5% - 35.0%
2018
$23.58	53,086	4.3	53,086	4.3	0.92%	3.4%	6.0	35%
$28.42	143,358	6.1	143,358	6.1	1.6% - 1.75%	4.4%	5.5-6.5	32.5% - 37.5%
$30.74	12,719	6.6	12,719	6.6	1.6% - 1.75%	4.4%	5.5-6.5	32.5% - 37.5%
$36.99	192,060	6.8	130,425	6.7	1.47% - 1.64%	4.1%	5.5-6.5	27.5% - 35.0%
2019
$23.58	51,985	3.3	51,985	3.3	0.92%	3.4%	6.0	35%
$28.42	143,358	5.1	143,358	5.1	1.6% - 1.75%	4.4%	5.5-6.5	32.5% - 37.5%
$30.74	12,719	5.6	12,719	5.6	1.6% - 1.75%	4.4%	5.5-6.5	32.5% - 37.5%
$36.99	167,024	6.1	167,024	6.1	1.47% - 1.64%	4.1%	5.5-6.5	27.5% - 35.0%

18. Related Party Transactions

The Company has a strategic partnership with GDS, a developer and operator of high-performance, large-scale data centers in the People's Republic of China. In connection with our investment in GDS, the Company entered into an agreement with GDS for the joint marketing of each company’s data centers. Also as a part of the agreement, the Company's Chief Executive Officer joined the board of directors of GDS on June 22, 2018.

For the years ended December 31, 2019 and 2018, the Company incurred $0.5 million and $0.9 million of commission and referral charges payable to GDS, respectively. The commission and referral charges were capitalized as deferred leasing costs and will be amortized over the terms of the respective customer leases. No significant referral expense was recognized by the Company in 2019, 2018 or 2017. We have not recognized any referral revenue related to the agreement with GDS in 2019, 2018 or 2017. See Note 9, Equity Investments, for additional information related to our GDS investment.

19. Income Taxes

CyrusOne Inc. elected to be taxed as a REIT under the Code, commencing with our taxable year ended December 31, 2013. To remain qualified as a REIT, we are required to distribute at least 90% of our taxable income to our stockholders and meet various other requirements imposed by the Code relating to such matters as operating results, asset holdings, distribution levels and diversity of stock ownership. Provided we continue to qualify for taxation as a REIT, we are generally not subject to corporate level federal income tax on the earnings distributed currently to our stockholders. It is our policy and intent, subject to change, to distribute 100% of our taxable income and therefore no provision is required in the accompanying financial statements for federal income taxes with regards to activities of CyrusOne Inc. and its subsidiary pass-through entities.

The REIT and certain of its subsidiaries are subject to state and local income taxes, franchise taxes, and gross receipts taxes. We have elected to treat certain of our subsidiaries as taxable REIT subsidiaries (TRSs). Our TRSs are subject to U.S. federal, state and local corporate income taxes. Our foreign subsidiaries are subject to corporate income taxes in the jurisdictions in which they operate.

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Notes to Consolidated Financial Statements - (continued)

Income tax expense (benefit) for the years ended December 31, 2019, 2018 and 2017 as reported in the accompanying Consolidated Statements of Operations was comprised of the following:

			Year Ended December 31,
IN MILLIONS			2019			2018			2017
	Current
		Federal	$	1.7		$	1.0		$	1.2
		State	1.9			2.0			1.8
		Foreign	0.2			—			—
		Total current expense	$	3.8		$	3.0		$	3.0
	Deferred:
		Federal	—			—			—
		State	—			—			—
		Foreign	$	(7.5	)	$	(2.4	)	$	—
		Total deferred (benefit) expense	(7.5		)	(2.4		)	—
	Total income tax (benefit) expense		$	(3.7	)	$	0.6		$	3.0

An income tax expense reconciliation between the U.S. statutory tax rate and the effective tax rate is as follows:

		Year Ended December 31,
IN MILLIONS		2019			2018			2017
	Income tax at U.S. federal statutory income tax rate	$	7.9		$	0.4		$	(28.2	)
	State and local taxes, net of federal income tax benefit	1.7			2.0			1.8
	Impact of REIT status	(13.7		)	(2.1		)	28.6
	Permanent differences	(0.7		)	(0.1		)	—
	Foreign tax rate and currency differences	(1.0		)	0.2			—
	Anti-hybrid disallowances	1.6			0.1			—
	Valuation allowance	0.5			0.1			0.8
	Income tax (benefit) expense	$	(3.7	)	$	0.6		$	3.0

The effective tax rate on income from continuing operations differs from tax at the statutory rate primarily due to our status as a REIT and taxation of our foreign subsidiaries.

Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases.

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CYRUSONE INC.

Notes to Consolidated Financial Statements - (continued)

The components of the Company’s deferred tax assets and liabilities are as follows:

			Year Ended December 31,
IN MILLIONS			2019			2018
	Deferred tax assets
		Net operating loss carryforwards	$	16.3		$	15.1
		Accounts receivable/payable and other	8.2			7.4
		Finance leases	0.9			1.8
	Total gross deferred tax assets		$	25.4		$	24.3
	Valuation allowance		(7.6		)	(6.9		)
	Total gross deferred tax assets, net		$	17.8		$	17.4
	Deferred tax liabilities
		Fixed assets	(67.4		)	(73.5		)
		Intangibles	$	(10.9	)	$	(12.8	)
	Total gross deferred tax liabilities		$	(78.3	)	$	(86.3	)
	Total net deferred tax assets/(liabilities)		$	(60.5	)	$	(68.9	)

On August 24, 2018, the Company completed the acquisition of Zenium. The Company recorded a deferred tax liability of $72.7 million in connection with the acquisition, which primarily related to differences between the carrying amounts of the assets and liabilities acquired and their tax bases in the jurisdictions in which they operate.

As of December 31, 2019, the Company’s deferred tax assets were primarily attributable to foreign NOL carryforwards that generally do not expire. A valuation allowance will be recorded to reduce deferred tax assets to amounts that are more likely than not to be realized. As of each reporting date, the Company’s management considers new evidence, both positive and negative, that could impact management’s view with regard to future realization of deferred tax assets. The Company has recorded a valuation allowance of $7.6 million as of December 31, 2019.

The Company and its subsidiaries file tax returns in the U.S. federal jurisdiction, various state and local jurisdictions, and certain foreign jurisdictions. With few exceptions, the Company is no longer subject to examination of its U.S. federal, state and local tax returns for years prior to 2015.

As of December 31, 2019, the Company as no liability for unrecognized tax benefits. If applicable, the Company will recognize interest and penalties related to unrecognized tax benefits as a component of tax expense.

20. Commitments and Contingencies

Operating Leases

We lease certain data center facilities and equipment from third parties. Certain of these leases provide for renewal options with fixed rent escalations beyond the initial lease term.

Standby Letters of Credit

As of December 31, 2019, CyrusOne Inc. had outstanding letters of credit of $8.2 million as security for obligations under the terms of its lessee agreements.

Performance Guarantees

Customer contracts generally require specified levels of performance related to uninterrupted service and cooling temperatures. If these performance standards are not met, we could be obligated to issue billing credits to the customer. Management assesses the probability that a performance standard will not be achieved. As of December 31, 2019 and 2018, no accruals for performance guarantees were required.

Purchase Commitments

The Company has entered into non-cancellable contracted commitments for construction of data center facilities and acquisition of equipment. As of December 31, 2019, these commitments were approximately $217.4 million and are expected to be incurred over the next one to two years. In addition, the Company has entered into equipment and electricity power contracts, which require minimum purchase commitments for power. These agreements range from one to two years and provide for payments for early

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Notes to Consolidated Financial Statements - (continued)

termination or require minimum payments for the remaining term. As of December 31, 2019, the minimum commitments for these arrangements were approximately $89.9 million.

The Company has entered into an Agreement to Lease contract that requires the Company to enter into a lease upon shell completion of building in London, UK totaling 70,000 square feet with annual rent totaling £1.4 million for initial lease terms of 20 years. We expect construction of the shell building to be completed in 2020.

Indemnifications

During the normal course of business, the Company and its subsidiaries have made certain indemnities and commitments to customers, vendors and associated parties related to the use, protection and security of intellectual property and claims for negligence or willful misconduct. Further, customer contracts generally require specified levels of performance related to uninterrupted service and cooling temperatures. Also, in the normal course of our business, the Company is involved in legal, tax and regulatory proceedings arising from the conduct of its business activities. Management assesses the probability that these performance standards, credits, claims or indemnities have been incurred and liabilities or asset reserves are established for loss contingencies when the losses associated are deemed to be probable and the loss can be reasonably estimated. Based on information currently available, the Company believes that the outcome of such matters will not, individually or in the aggregate, have a material effect on its consolidated financial statements.

Contingencies

CyrusOne is involved in legal, tax and regulatory proceedings arising from the conduct of its business activities. Liabilities are established for loss contingencies when losses associated with such claims are deemed to be probable, and the loss can be reasonably estimated. Based on information currently available and consultation with legal counsel, we believe that the outcome of all claims will not, individually or in the aggregate, have a material effect on our financial statements.

21. Guarantors

The 2024 Notes and the 2029 Notes issued by CyrusOne LP (the “LP Co-Issuer”) and CyrusOne Finance Corp. (the “Finance Co-Issuer” and, together with the LP Co-Issuer, the “Co-Issuers”) are fully and unconditionally and jointly and severally guaranteed on a senior unsecured basis by CyrusOne Inc. (the “Parent Guarantor”).

The indentures governing the 2024 Notes and 2029 Notes contain affirmative and negative covenants customarily found in indebtedness of this type, including covenants that restrict, subject to certain exceptions, the Company’s ability to incur secured or unsecured indebtedness. The Company and its subsidiaries are also required to maintain total unencumbered assets of at least 150% of their unsecured debt on a consolidated basis, subject to certain qualifications set forth in the indentures. The covenants contained in the indentures do not restrict the Company’s ability to pay dividends or distributions to stockholders.

The Old 2024 Notes and the Old 2027 Notes issued by the LP Co-Issuer and the Finance Co-Issuer were fully and unconditionally and jointly and severally guaranteed on a senior unsecured basis.

The indentures governing the Old 2024 Notes and Old 2027 Notes contained affirmative and negative covenants customarily found in indebtedness of this type, including covenants that restricted, subject to certain exceptions, the Company’s ability to: incur secured or unsecured indebtedness; pay dividends or distributions on its equity interests, or redeem or repurchase equity interests of the Company; make certain investments or other restricted payments; enter into transactions with affiliates; enter into agreements limiting the ability of the Operating Partnership’s subsidiaries to pay dividends or make certain transfers and other payments to the Operating Partnership or to other subsidiaries; sell assets; and merge, consolidate or transfer all or substantially all of the operating partnership’s assets. The Company and its subsidiaries were also required to maintain total unencumbered assets of at least 150% of their unsecured debt on a consolidated basis, subject to certain qualifications set forth in the indenture.

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Notes to Consolidated Financial Statements - (continued)

Notwithstanding the foregoing, the covenants contained in the indentures did not restrict the Company’s ability to pay dividends or distributions to stockholders to the extent (i) no default or event of default existed or was continuing under the indentures and (ii) the Company believed in good faith that it qualified as a REIT under the Code and the payment of such dividend or distribution was necessary either to maintain its status as a REIT or to enable it to avoid payment of any tax that could be avoided by reason of such dividend or distribution. Subject to the provisions of the indentures governing the Old 2024 Notes and Old 2027 Notes, in certain circumstances, a Guarantor could have been released from its guarantee obligation, including:

• upon the sale or other disposition (including by way of consolidation or merger) of such Guarantor or of all of the capital stock of such Guarantor such that such Guarantor was no longer a restricted subsidiary under the indentures,

• upon the sale or disposition of all or substantially all of the assets of the Guarantor,

• upon the LP Co-issuer designating such Guarantor as an unrestricted subsidiary under the terms of the indentures,

• if such Guarantor was no longer a guarantor or other obligor of any other indebtedness of the LP Co-issuer or the Parent Guarantor,

• upon the LP Co-issuer designating such Guarantor as an excluded subsidiary under the terms of the indentures,

• upon the defeasance or discharge of the Old 2024 Notes or Old 2027 Notes, as applicable, in accordance with the terms of the indentures, and

• upon the Old 2024 Notes or Old 2027 Notes, as applicable, being rated investment grade by at least two rating agencies and no default or event of default having occurred and continuing.

The term “Guarantor Subsidiaries” refers collectively to the Subsidiary Guarantors and the General Partner, who were guarantors of the Old 2024 Notes and Old 2027 Notes prior to May 9, 2019. The term “Non-Guarantors” refers collectively to the Company’s foreign subsidiaries and certain domestic subsidiaries, which are not, and were not, prior to May 9, 2019, guarantors of the Old 2024 Notes or Old 2027 Notes. On and after May 9, 2019, the term “Non-Guarantor Subsidiaries” refers collectively to the Subsidiary Guarantors and the Non-Guarantors.

The Parent Guarantor is a REIT whose only material asset is its ownership of operating partnership units of the LP Co-Issuer. The LP Co-Issuer and its subsidiaries hold substantially all the assets of the Company. The LP Co-Issuer conducts the operations of the business, along with its subsidiaries. The Finance Co-Issuer does not have any operations or revenues.

The following schedules present the consolidating balance sheets as of December 31, 2019, and the consolidating statements of operations, comprehensive income (loss) and cash flows for the years ended December 31, 2019, 2018 and 2017 for the Parent Guarantor, General Partner, each Co-Issuer and Non-Guarantor Subsidiaries. Prior to the release of the Subsidiary Guarantors on May 9, 2019, the following schedules present the consolidating balance sheets as of December 31, 2018, the consolidating statements of operations and comprehensive income (loss), and the statements of cash flows for the years ended December 31, 2018 and 2017 for the Parent Guarantor, General Partner, each Co-Issuer, Guarantor Subsidiaries, and Non-Guarantors. Eliminations and consolidation adjustments primarily relate to the elimination of investments in subsidiaries and equity earnings (loss) related to investments in subsidiaries (in millions).

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Notes to Consolidated Financial Statements - (continued)

Consolidating Balance Sheets

IN MILLIONS	As of December 31, 2019
	Parent Guarantor		General Partner		LP Co-issuer		Finance Co-issuer		Non-Guarantor Subsidiaries		Eliminations/Consolidations			Total
Total investment in real estate, net	$	—	$	—	$	—	$	—	$	4,640.4	$	69.9		$	4,710.3
Cash and cash equivalents	—		—		0.6		—		75.8		—			76.4
Investment in subsidiaries	2,402.2		16.8		3,569.0		—		—		(5,988.0		)	—
Rent and other receivables, net	—		—		—		—		291.9		—			291.9
Restricted cash	—		—		—		—		1.3		—			1.3
Operating lease right-of-use assets, net	—		—		—		—		161.9		—			161.9
Intercompany receivable	21.1		—		1,753.3		—		38.8		(1,813.2		)	—
Equity investments	—		—		—		—		135.1		—			135.1
Goodwill	—		—		—		—		455.1		—			455.1
Intangible assets, net	—		—		—		—		196.1		—			196.1
Other assets	—		—		3.5		—		110.4		—			113.9
Total assets	$	2,423.3	$	16.8	$	5,326.4	$	—	$	6,106.8	$	(7,731.3	)	$	6,142.0
Debt	$	—	$	—	$	2,886.6	$	—	$	—	$	—		$	2,886.6
Intercompany payable	—		—		21.1		—		1,792.1		(1,813.2		)	—
Finance lease liabilities	—		—		—		—		31.8		—			31.8
Operating lease liabilities	—		—		—		—		195.8		—			195.8
Construction costs payable	—		—		—		—		176.3		—			176.3
Accounts payable and accrued expenses	—		—		5.1		—		117.6		—			122.7
Dividends payable	58.6		—		—		—		—		—			58.6
Deferred revenue and prepaid rents	—		—		—		—		163.7		—			163.7
Deferred tax liability	—		—		—		—		60.5		—			60.5
Other liabilities	—		—		11.4		—		—		—			11.4
Total liabilities	58.6		—		2,924.2		—		2,537.8		(1,813.2		)	3,707.4
Total stockholders' equity	2,364.7		16.8		2,402.2		—		3,569.0		(5,918.1		)	2,434.6
Total liabilities and equity	$	2,423.3	$	16.8	$	5,326.4	$	—	$	6,106.8	$	(7,731.3	)	$	6,142.0

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Notes to Consolidated Financial Statements - (continued)

IN MILLIONS	As of December 31, 2018
	Parent Guarantor		General Partner		LP Co-issuer		Finance Co-issuer		Guarantor Subsidiaries		Non- Guarantors		Eliminations/Consolidations			Total
Total investment in real estate, net	$	—	$	—	$	—	$	—	$	3,611.2	$	644.9	$	36.9		$	4,293.0
Cash and cash equivalents	—		—		—		—		27.2		37.2		—			64.4
Investment in subsidiaries	2,216.9		22.2		3,122.5		—		—		—		(5,361.6		)	—
Rent and other receivables, net	—		—		—		—		218.7		16.2		—			234.9
Intercompany receivable	23.2		—		1,761.5		—		6.8		—		(1,791.5		)	—
Equity investments	—		—		—		—		—		198.1		—			198.1
Goodwill	—		—		—		—		455.1		—		—			455.1
Intangible assets, net	—		—		—		—		178.1		57.6		—			235.7
Other assets	—		—		0.5		—		94.4		16.4		—			111.3
Total assets	$	2,240.1	$	22.2	$	4,884.5	$	—	$	4,591.5	$	970.4	$	(7,116.2	)	$	5,592.5
Debt	$	—	$	—	$	2,624.7	$	—	$	—	$	—	$	—		$	2,624.7
Intercompany payable	—		—		23.2		—		1,761.5		6.8		(1,791.5		)	—
Finance lease liabilities	—		—		—		—		104.0		52.7		—			156.7
Construction costs payable	—		—		—		—		175.6		19.7		—			195.3
Accounts payable and accrued expenses	—		—		19.7		—		95.9		5.7		—			121.3
Dividends payable	51.0		—		—		—		—		—		—			51.0
Deferred revenue and prepaid rents	—		—		—		—		144.9		3.7		—			148.6
Deferred tax liability	—		—		—		—		—		68.9		—			68.9
Total liabilities	51.0		—		2,667.6		—		2,281.9		157.5		(1,791.5		)	3,366.5
Total stockholders' equity	2,189.1		22.2		2,216.9		—		2,309.6		812.9		(5,324.7		)	2,226.0
Total liabilities and equity	$	2,240.1	$	22.2	$	4,884.5	$	—	$	4,591.5	$	970.4	$	(7,116.2	)	$	5,592.5

116

CYRUSONE INC.

Notes to Consolidated Financial Statements - (continued)

Consolidating Statements of Operations and Comprehensive Income (Loss)

IN MILLIONS	Year Ended December 31, 2019
	Parent Guarantor		General Partner		LP Co-issuer			Finance Co-issuer		Non-Guarantor Subsidiaries			Eliminations/Consolidations			Total
Revenue	$	—	$	—	$	—		$	—	$	981.3		$	—		$	981.3
Total operating expenses	—		—		—			—		914.3			—			914.3
Operating income	—		—		—			—		67.0			—			67.0
Interest (expense) income, net	—		—		(114.5		)	—		(0.4		)	32.9			(82.0		)
Gain on marketable equity investment	—		—		—			—		132.3			—			132.3
Loss on early extinguishment of debt	—		—		(71.8		)	—		—			—			(71.8		)
Foreign currency and derivative losses, net	—		—		(7.5		)	—		—			—			(7.5		)
Other expense	—		—		—			—		(0.3		)	—			(0.3		)
(Loss) income before income taxes	—		—		(193.8		)	—		198.6			32.9			37.7
Income tax benefit	—		—		—			—		3.7			—			3.7
Equity earnings (loss) related to investment in subsidiaries	19.6		0.1		214.1			—		—			(233.8		)	—
Net income (loss)	19.6		0.1		20.3			—		202.3			(200.9		)	41.4
Other comprehensive income	—		—		(0.7		)	—		11.8			—			11.1
Comprehensive income (loss)	$	19.6	$	0.1	$	19.6		$	—	$	214.1		$	(200.9	)	$	52.5

IN MILLIONS	Year Ended December 31, 2018
	Parent Guarantor			General Partner			LP Co-issuer			Finance Co-issuer		Guarantor Subsidiaries			Non- Guarantors			Eliminations/Consolidations			Total
Revenue	$	—		$	—		$	—		$	—	$	799.7		$	21.7		$	—		$	821.4
Total operating expenses	—			—			—			—		700.2			31.5			—			731.7
Operating income (loss)	—			—			—			—		99.5			(9.8		)	—			89.7
Interest (expense) benefit, net	—			—			(110.6		)	—		—			(3.3		)	19.2			(94.7		)
Gain on marketable equity investment	—			—			—			—		—			9.9			—			9.9
Loss on early extinguishment of debt	—			—			(3.1		)	—		—			—			—			(3.1		)
(Loss) income before income taxes	—			—			(113.7		)	—		99.5			(3.2		)	19.2			1.8
Income tax (expense) benefit	—			—			—			—		(3.0		)	2.4			—			(0.6		)
Equity (loss) earnings related to investment in subsidiaries	(28.9		)	(0.3		)	84.8			—		—			—			(55.6		)	—
Net (loss) income	(28.9		)	(0.3		)	(28.9		)	—		96.5			(0.8		)	(36.4		)	1.2
Other comprehensive loss	—			—			—			—		—			(10.9		)	—			(10.9		)
Comprehensive (loss) income	$	(28.9	)	$	(0.3	)	$	(28.9	)	$	—	$	96.5		$	(11.7	)	$	(36.4	)	$	(9.7	)

IN MILLIONS	Year Ended December 31, 2017
	Parent Guarantor			General Partner			LP Co-issuer			Finance Co-issuer		Guarantor Subsidiaries			Non- Guarantors			Eliminations/Consolidations			Total
Revenue	$	—		$	—		$	—		$	—	$	666.4		$	5.6		$	—		$	672.0
Total operating expenses	—			—			—			—		640.4			7.5			—			647.9
Operating income (loss)	—			—			—			—		26.0			(1.9		)	—			24.1
Interest (expense) benefit, net	—			—			(76.2		)	—		—			(2.6		)	10.7			(68.1		)
Loss on early extinguishment of debt	—			—			(36.5		)	—		—			—			—			(36.5		)
(Loss) income before income taxes	—			—			(112.7		)	—		26.0			(4.5		)	10.7			(80.5		)
Income tax expense	—			—			—			—		(3.0		)	—			—			(3.0		)
Equity (loss) earnings related to investment in subsidiaries	(18.7		)	(0.2		)	94.0			—		(4.6		)	—			(70.5		)	—
Net (loss) income	(18.7		)	(0.2		)	(18.7		)	—		18.4			(4.5		)	(59.8		)	(83.5		)
Other comprehensive income	—			—			—			—		—			75.5			—			75.5
Comprehensive (loss) income	$	(18.7	)	$	(0.2	)	$	(18.7	)	$	—	$	18.4		$	71.0		$	(59.8	)	$	(8.0	)

117

CYRUSONE INC.

Notes to Consolidated Financial Statements - (continued)

Consolidating Statements of Cash Flows

IN MILLIONS	Year Ended December 31, 2019
	Parent Guarantor			General Partner			LP Co-issuer			Finance Co-issuer		Non-Guarantor Subsidiaries			Eliminations/Consolidations			Total
Net cash (used in) provided by operating activities	$	—		$	—		$	(124.9	)	$	—	$	457.7		$	32.9		$	365.7
Cash flows from investing activities:
Investment in real estate	—			—			—			—		(843.5		)	(32.9		)	(876.4		)
Investment in subsidiaries	(357.2		)	(2.5		)	(210.4		)	—		—			570.1			—
Equity investments	—			—			—			—		(3.8		)	—			(3.8		)
Proceeds from sale of equity investments	—			—			—			—		199.0			—			199.0
Proceeds from the sale of real estate assets	—			—			—			—		1.3			—			1.3
Return of investment	210.4			—			—			—		—			(210.4		)	—
Intercompany borrowings	9.3			—			8.2			—		32.0			(49.5		)	—
Net cash (used in) provided by investing activities	(137.5		)	(2.5		)	(202.2		)	—		(615.0		)	277.3			(679.9		)
Cash flows from financing activities:
Issuance of common stock, net	357.2			—			—			—		—			—			357.2
Dividends paid	(210.4		)	—			(210.4		)	—		—			210.4			(210.4		)
Intercompany borrowings	—			—			(9.3		)	—		(40.2		)	49.5			—
Proceeds from revolving credit facility	—			—			656.7			—		—			—			656.7
Repayments of revolving credit facility	—			—			(182.5		)	—		—			—			(182.5		)
Repayments of unsecured term loan	—			—			(200.0		)	—		—			—			(200.0		)
Proceeds from senior notes	—			—			1,197.4			—		—			—			1,197.4
Repayments of senior notes	—			—			(1,200.0		)	—		—			—			(1,200.0		)
Payment of debt extinguishment costs	—			—			(72.0		)	—		—			—			(72.0		)
Payment of deferred financing costs	—			—			(9.4		)	—		—			—			(9.4		)
Payments on finance lease liabilities	—			—			—			—		(2.9		)	—			(2.9		)
Tax payment upon exercise of equity awards	(9.3		)	—			—			—		—			—			(9.3		)
Contributions/distributions from parent	—			2.5			357.2			—		210.4			(570.1		)	—
Net cash provided by (used in) financing activities	137.5			2.5			327.7			—		167.3			(310.2		)	324.8
Effect of exchange rate changes on cash, cash equivalents and restricted cash	—			—			—			—		2.7			—			2.7
Net increase (decrease) in cash, cash equivalents and restricted cash	—			—			0.6			—		12.7			—			13.3
Cash, cash equivalents and restricted cash at beginning of period	—			—			—			—		64.4			—			64.4
Cash, cash equivalents and restricted cash at end of period	$	—		$	—		$	0.6		$	—	$	77.1		$	—		$	77.7

118

CYRUSONE INC.

Notes to Consolidated Financial Statements - (continued)

IN MILLIONS	Year Ended December 31, 2018
	Parent Guarantor			General Partner			LP Co-issuer			Finance Co-issuer		Guarantor Subsidiaries			Non- Guarantors			Eliminations/Consolidations			Total
Net cash (used in) provided by operating activities	$	—		$	—		$	(103.6	)	$	—	$	421.6		$	(27.9	)	$	19.2		$	309.3
Cash flows from investing activities:
Asset acquisitions, primarily real estate, net of cash acquired	—			—			—			—		—			(462.8		)	—			(462.8		)
Investment in real estate	—			—			—			—		(814.6		)	(31.9		)	(19.2		)	(865.7		)
Equity investments	—			—			—			—		—			(12.6		)	—			(12.6		)
Investment in subsidiaries	(700.0		)	(7.0		)	(829.5		)	—		—			—			1,536.5			—
Return of investment	181.1			—			—			—		—			—			(181.1		)	—
Intercompany borrowings	5.6			—			(105.1		)	—		(6.8		)	—			106.3			—
Net cash (used in) provided by investing activities	(513.3		)	(7.0		)	(934.6		)	—		(821.4		)	(507.3		)	1,442.5			(1,341.1		)
Cash flows from financing activities:
Issuance of common stock, net	699.6			—			—			—		—			—			—			699.6
Dividends paid	(181.1		)	—			(181.1		)	—		—			—			181.1			(181.1		)
Intercompany borrowings	—			—			(5.6		)	—		105.1			6.8			(106.3		)	—
Proceeds from revolving credit facility	—			—			658.4			—		—			29.9			—			688.3
Repayments of revolving credit facility	—			—			(532.7		)	—		—			(114.7		)	—			(647.4		)
Proceeds from unsecured term loan	—			—			1,300.0			—		—			—			—			1,300.0
Repayments of unsecured term loan	—			—			(900.0		)	—		—			—			—			(900.0		)
Payments on finance lease liabilities	—			—			—			—		(7.9		)	(1.6		)	—			(9.5		)
Tax payment upon exercise of equity awards	(5.2		)	—			—			—		—			—			—			(5.2		)
Contributions/distributions from parent	—			7.0			700.0			—		178.6			650.9			(1,536.5		)	—
Net cash provided by (used in) financing activities	513.3			7.0			1,039.0			—		275.8			571.3			(1,461.7		)	944.7
Effect of exchange rate changes on cash, cash equivalents and restricted cash	—			—			(0.8		)	—		—			0.4			—			(0.4		)
Net increase (decrease) in cash, cash equivalents and restricted cash	—			—			—			—		(124.0		)	36.5			—			(87.5		)
Cash, cash equivalents and restricted cash at beginning of period	—			—			—			—		151.2			0.7			—			151.9
Cash, cash equivalents and restricted cash at end of period	$	—		$	—		$	—		$	—	$	27.2		$	37.2		$	—		$	64.4

119

CYRUSONE INC.

Notes to Consolidated Financial Statements - (continued)

IN MILLIONS	Year Ended December 31, 2017
	Parent Guarantor			General Partner			LP Co-issuer			Finance Co-issuer		Guarantor Subsidiaries			Non- Guarantors			Eliminations/Consolidations			Total
Net cash (used in) provided by operating activities	$	—		$	—		$	(60.3	)	$	—	$	339.7		$	(0.6	)	$	10.7		$	289.5
Cash flows from investing activities:
Asset acquisitions, primarily real estate, net of cash acquired	—			—			—			—		(492.3		)	—			—			(492.3		)
Investment in real estate	—			—			—			—		(903.8		)	—			(10.7		)	(914.5		)
Equity investments	—			—			—			—		—			(100.0		)	—			(100.0		)
Investment in subsidiaries	(705.3		)	(7.1		)	(705.3		)	—		(0.7		)	—			1,418.4			—
Return of investment	145.7			—			—			—		—			—			(145.7		)	—
Intercompany borrowings	6.5			—			(598.8		)	—		—			0.5			591.8			—
Net cash (used in) provided by investing activities	(553.1		)	(7.1		)	(1,304.1		)	—		(1,396.8		)	(99.5		)	1,853.8			(1,506.8		)
Cash flows from financing activities:
Issuance of common stock, net	705.7			—			—			—		—			—			—			705.7
Dividends paid	(145.7		)	—			(145.7		)	—		—			—			145.7			(145.7		)
Intercompany borrowings	—			—			(6.5		)	—		598.2			—			(591.7		)	—
Proceeds from revolving credit facility	—			—			1,037.3			—		—			—			—			1,037.3
Repayments of revolving credit facility	—			—			(1,275.0		)	—		—			—			—			(1,275.0		)
Proceeds from unsecured term loan	—			—			350.0			—		—			—			—			350.0
Proceeds from senior notes	—			—			1,217.8			—		—			—			—			1,217.8
Repayments of senior notes	—			—			(474.8		)	—		—			—			—			(474.8		)
Payment of debt extinguishment costs	—			—			(30.0		)	—		—			—			—			(30.0		)
Payment of deferred financing costs	—			—			(16.7		)	—		—			—			—			(16.7		)
Payments on finance lease liabilities	—			—			—			—		(8.6		)	(1.2		)	—			(9.8		)
Interest paid by lenders on issuance of the senior notes	—			—			2.7			—		—			—			—			2.7
Tax payment upon exercise of equity awards	(6.9		)	—			—			—		—			—			—			(6.9		)
Contributions/distributions from parent	—			7.1			705.3			—		605.3			100.8			(1,418.5		)	—
Net cash provided by (used in) financing activities	553.1			7.1			1,364.4			—		1,194.9			99.6			(1,864.5		)	1,354.6
Net increase (decrease) in cash, cash equivalents and restricted cash	—			—			—			—		137.8			(0.5		)	—			137.3
Cash, cash equivalents and restricted cash at beginning of period	—			—			—			—		13.4			1.2			—			14.6
Cash, cash equivalents and restricted cash at end of period	$	—		$	—		$	—		$	—	$	151.2		$	0.7		$	—		$	151.9

120

CYRUSONE INC.

Notes to Consolidated Financial Statements - (continued)

22. Quarterly Financial Information (Unaudited)

The table below reflects the unaudited selected quarterly information for the years ended December 31, 2019 and 2018:

IN MILLIONS, except per share amounts
	2019
	First Quarter		Second Quarter			Third Quarter			Fourth Quarter			Total
Revenue	$	225.0	$	251.5		$	250.9		$	253.9		$	981.3
Operating income	11.8		19.7			13.2			22.3			67.0
Net income (loss)	89.4		(8.5		)	12.6			(52.1		)	41.4
Basic income (loss) per share	0.82		(0.08		)	0.11			(0.46		)	0.36
Diluted income (loss) per share	0.82		(0.08		)	0.11			(0.46		)	0.36
IN MILLIONS, except per share amounts
	2018
	First Quarter		Second Quarter			Third Quarter			Fourth Quarter			Total
Revenue	$	196.6	$	196.9		$	206.6		$	221.3		$	821.4
Operating income	27.7		27.0			20.2			14.8			89.7
Net income (loss)	43.5		105.9			(42.4		)	(105.8		)	1.2
Basic income (loss) per share	0.45		1.07			(0.43		)	(1.09		)	—
Diluted income (loss) per share	0.45		1.06			(0.43		)	(1.08		)	—

23. Subsequent Event

On January 22, 2020, the Issuers closed their previously announced offering of €500.0 million aggregate principal amount of 1.450% Senior Notes due 2027 (the “2027 Notes”).

The 2027 Notes have been registered under the Securities Act of 1933, as amended (the “Securities Act”), pursuant to a shelf registration statement on Form S- 3 (File No. 333-231203), as supplemented by the prospectus supplement dated January 15, 2020, filed with the SEC under the Securities Act.

The 2027 Notes are unsecured senior obligations of the Issuers, which rank equally in right of payment with all of the Issuers’ existing and future unsecured senior debt and senior in right of payment to all of the Issuers’ future subordinated debt, if any. The 2027 Notes will be effectively subordinated to any of the Issuers’ future secured debt, if any, to the extent of the value of the assets securing such debt. The 2027 Notes will be guaranteed on a senior unsecured basis by CyrusOne Inc., the sole beneficial owner and sole trustee of CyrusOne GP, which is the sole general partner of CyrusOne LP. The guarantees will rank equally in right of payment with all of CyrusOne Inc.’s existing and future unsecured senior debt and senior in right of payment to all of CyrusOne Inc.’s future subordinated debt, if any. The guarantees will be effectively subordinated to any of CyrusOne Inc.’s future secured debt to the extent of the value of the assets securing such debt. In addition, the 2027 Notes will be structurally subordinated to the liabilities of any subsidiaries of CyrusOne LP (other than CyrusOne Finance Corp.). The guarantees will be structurally subordinated to the liabilities of any subsidiaries of CyrusOne Inc. (other than the Issuers).

121

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

None.

ITEM 9A.    CONTROLS AND PROCEDURES

Conclusion Regarding the Effectiveness of Disclosure Controls and Procedures

Under the supervision and with the participation of our management, including our Chief Executive Officer and our Chief Financial Officer (our principal executive officer and principal financial officer, respectively), we have evaluated our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the Exchange Act)) as of December 31, 2019. Based upon that evaluation, the Chief Executive Officer and the Chief Financial Officer have concluded that, as of December 31, 2019, the Company’s disclosure controls and procedures were effective in ensuring information required to be disclosed by the Company in reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the rules and forms of the SEC and is accumulated and communicated to the Company’s management, including the Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

Management’s Annual Report on Internal Control Over Financial Reporting

Management is responsible for establishing and maintaining adequate internal control over financial reporting. Under the supervision and with the participation of management, including the Chief Executive Officer and Chief Financial Officer, management assessed the effectiveness of internal control over financial reporting as of December 31, 2019 based on the Internal Control-Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on that assessment, management has concluded that our internal control over financial reporting was effective at December 31, 2019, to provide reasonable assurance regarding the reliability of our financial reporting and the preparation of our financial statements for external purposes in accordance with U.S. generally accepted accounting principles. Due to its inherent limitations, internal control over financial reporting may not prevent or detect misstatements.

Deloitte & Touche LLP, our independent registered public accounting firm, has audited our financial statements included in this Annual Report on Form 10-K and has issued its attestation report on the effectiveness of our internal control over financial reporting as of December 31, 2019, which report is included under Item 8 of this Annual Report on Form 10-K.

Changes in Internal Control Over Financial Reporting

There has been no change in our internal control over financial reporting during the fourth quarter ended December 31, 2019 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

ITEM 9B.    OTHER INFORMATION

None.

122

PART III

Item 10. Directors, Executive Officers and Corporate Governance

The information required by this item can be found in the Proxy Statement for the 2020 Annual Meeting of Shareholders and is incorporated herein by reference.

The Company has a Code of Business Conduct and Ethics that applies to all employees, including the Company’s principal executive officer, principal financial officer, and principal accounting officer, as well as to the members of the Board of Directors of the Company. The code is available at investor.cyrusone.com/corporate-governance. The Company intends to disclose any changes in, or waivers from, this code by posting such information on the same website or by filing a Current Report on Form 8-K, in each case to the extent such disclosure is required by rules of the SEC or NASDAQ.

Items 11. Executive Compensation

The information required by this item can be found in the Proxy Statement for the 2020 Annual Meeting of Shareholders and is incorporated herein by reference.

Items 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

The information required by this item can be found in the Proxy Statement for the 2020 Annual Meeting of Shareholders and is incorporated herein by reference.

Item 13. Certain Relationships and Related Transactions, and Director Independence

The information required by this item can be found in the Proxy Statement for the 2020 Annual Meeting of Shareholders and is incorporated herein by reference.

Item 14. Principal Accountant Fees and Services

The information required by this item can be found in the Proxy Statement for the 2020 Annual Meeting of Shareholders and is incorporated herein by reference.

PART IV

ITEM 15.    EXHIBITS, FINANCIAL STATEMENT SCHEDULES

(a)Consolidated Financial Statements and Schedules. The following consolidated financial statements and schedules are included in this report:

(1)FINANCIAL STATEMENTS

The response to this portion of Item 15 is submitted under Item 8 of this Annual Report on Form 10-K.

(2)FINANCIAL STATEMENT SCHEDULES

Schedule II—Valuation and Qualifying Accounts

Schedule III—Consolidated Real Estate and Accumulated Depreciation. The response to this portion of Item 15 is required to be filed by Item 8 of this Annual Report on Form 10-K.

All other schedules for which provision is made in the applicable accounting regulations of the SEC are not required under the related instructions or are inapplicable and therefore have been omitted.

(3)EXHIBITS

See the accompanying Exhibit Index.

Exhibits may be obtained from us upon request at a charge that reflects the reproduction cost of such Exhibits. Requests should be made to the Secretary of CyrusOne Inc., 2850 N. Harwood, Suite 2200, Dallas, Texas 75201. Exhibits are also available, free of charge, on the SEC's website at www.sec.gov.

ITEM 16.    FORM 10-K SUMMARY

None.

123

Schedule II.

Valuation and Qualifying Accounts 

	Beginning		Charge			(Deductions)/			End
(dollars in millions)	of Period		to Expenses			Additions			of Period
Allowance for Doubtful Accounts
2019	$	1.7	$	1.7		$	(1.6	)	$	1.8
2018	2.1		2.3			(2.7		)	1.7
2017	2.1		0.2			(0.2		)	2.1
Deferred Tax Valuation Allowance
2019	$	6.9	$	0.7		$	—		$	7.6
2018	7.2		(0.3		)	—			6.9
2017	6.5		0.7			—			7.2

124

Schedule III. Real Estate Properties and Accumulated Depreciation

CyrusOne Inc.	As of December 31, 2019
(dollars in millions)	Initial Costs						Cost Capitalized Subsequent to Acquisition								Gross Carrying Amount
Description	Land		Building and Improvements		Equipment		Land		Building and Improvements			Equipment			Land		Building and Improvements		Equipment		Accumulated Depreciation		Acquisition
Austin II	$	2.0	$	—	$	—	$	—	$	23.5		$	13.3		$	2.0	$	23.5	$	13.3	$	19.7	2011
Austin III	3.3		—		—		—		12.6			64.0			3.3		12.6		64.0		16.7		2015
Chicago - Aurora I	2.4		26.0		97.3		—		6.4			39.0			2.4		32.4		136.3		57.2		2016
Chicago - Aurora II	2.6		—		—		—		22.9			70.3			2.6		22.9		70.3		14.6		2016
Chicago - Aurora Tower	—		—		—		—		6.4			0.9			—		6.4		0.9		0.5		2018
Chicago - Lombard	0.7		3.2		—		—		1.5			8.1			0.7		4.7		8.1		8.6		2008
Cincinnati - 7th Street	0.9		42.2		—		—		71.9			37.2			0.9		114.1		37.2		99.5		1999
Cincinnati - Blue Ash*	—		2.6		—		—		(1.9		)	0.2			—		0.7		0.2		0.6		2009
Cincinnati - Hamilton	—		9.5		—		—		34.2			7.8			—		43.7		7.8		33.6		2007
Cincinnati - Mason	—		—		—		—		20.3			1.7			—		20.3		1.7		15.8		2004
Cincinnati - North Cincinnati	0.9		12.3		—		—		65.5			16.0			0.9		77.8		16.0		47.7		2008
Dallas - Allen	6.5		—		—		—		15.0			39.5			6.5		15.0		39.5		2.9		2017
Dallas - Carrollton	16.1		—		—		—		63.8			323.3			16.1		63.8		323.3		133.6		2012
Dallas - Lewisville	—		46.2		2.2		—		11.9			38.9			—		58.1		41.1		69.4		2010
Florence	2.2		7.7		—		—		34.3			8.7			2.2		42.0		8.7		36.8		2005
Frankfurt I	4.0		31.0		109.7		—		5.0			13.9			4.0		36.0		123.7		13.7		2018
Frankfurt II	7.0		—		47.7		—		135.1			45.9			7.0		135.1		93.6		12.4		2018
Houston - Galleria	—		56.0		2.0		—		15.0			22.4			—		71.0		24.4		60.1		2010
Houston - Houston West I	1.4		21.4		0.1		—		63.8			51.5			1.4		85.2		51.6		90.6		2010
Houston - Houston West II	2.0		—		—		0.7		22.8			52.0			2.7		22.8		52.0		39.1		2013
Houston - Houston West III	7.1		—		—		0.1		18.1			32.3			7.2		18.1		32.3		13.6		2013
London - Great Bridgewater	—		16.5		—		—		(16.5		)	1.3			—		—		1.3		1.0		2011
London I	—		25.3		20.5		—		19.0			25.9			—		44.3		46.4		6.5		2018
London II	—		19.9		58.7		—		22.9			34.6			—		42.8		93.3		17.4		2018
Northern Virginia - Sterling I	6.9		—		—		—		20.2			62.2			6.9		20.2		62.2		31.1		2013
Northern Virginia - Sterling II	—		—		—		—		28.8			112.4			—		28.8		112.4		36.7		2013
Northern Virginia - Sterling III	—		—		—		—		22.3			61.8			—		22.3		61.8		18.8		2017
Northern Virginia - Sterling IV	4.6		9.6		0.1		—		10.5			78.0			4.6		20.1		78.1		20.5		2016
Northern Virginia - Sterling V	14.5		—		—		—		81.7			303.7			14.5		81.7		303.7		56.6		2016
Northern Virginia - Sterling VI	9.7		—		—		—		60.2			196.9			9.7		60.2		196.9		19.5		2018
Northern Virginia - Sterling VIII	9.1		—		—		—		7.0			28.0			9.1		7.0		28.0		2.0		2018
Norwalk I*	—		18.3		25.3		—		(16.6		)	(14.7		)	—		1.7		10.6		4.5		2015
Phoenix - Chandler I	10.5		—		—		—		58.3			71.5			10.5		58.3		71.5		53.5		2011
Phoenix - Chandler II	—		—		—		—		16.2			39.8			—		16.2		39.8		24.2		2014
Phoenix - Chandler III	—		0.9		2.5		—		10.5			48.8			—		11.4		51.3		16.7		2016
Phoenix - Chandler IV	—		—		—		—		18.4			44.3			—		18.4		44.3		11.6		2017
Phoenix - Chandler V	—		—		—		—		12.1			54.6			—		12.1		54.6		9.3		2017
Phoenix - Chandler VI	2.3		—		—		0.1		23.3			101.7			2.4		23.3		101.7		20.8		2016
Phoenix - Chandler VII	4.2		—		—		—		0.8			0.4			4.2		0.8		0.4		—		2016
Raleigh-Durham I	2.1		73.5		71.3		—		6.3			8.7			2.1		79.8		80.0		34.4		2017
San Antonio I	4.6		3.0		—		—		28.7			36.3			4.6		31.7		36.3		35.5		2011
San Antonio II	6.7		—		—		0.3		30.3			61.0			7.0		30.3		61.0		24.4		2013
San Antonio III	—		—		—		—		40.2			99.5			—		40.2		99.5		29.9		2017
San Antonio IV	—		—		—		—		56.3			50.6			—		56.3		50.6		13.6		2017
Santa Clara II	—		2.7		—		—		—			—			—		2.7		—		1.1		2019
Somerset I	12.1		124.6		83.3		—		7.5			18.5			12.1		132.1		101.8		43.2		2017
South Bend - Monroe	—		—		—		—		1.9			0.3			—		1.9		0.3		2.0		2007
Stamford - Omega*	—		3.2		0.6		—		(3.1		)	0.2			—		0.1		0.8		0.7		2015
Stamford - Riverbend*	—		4.3		13.2		—		(3.4		)	(4.6		)	—		0.9		8.6		6.9		2015

125

(dollars in millions)	Initial Costs						Cost Capitalized Subsequent to Acquisition							Gross Carrying Amount
Description	Land		Building and Improvements		Equipment		Land		Building and Improvements			Equipment		Land		Building and Improvements		Equipment		Accumulated Depreciation		Acquisition
Totowa - Commerce	$	—	$	4.1	$	0.8	$	—	$	(3.7	)	$	0.9	$	—	$	0.4	$	1.7	$	0.9	2015
Totowa - Madison	—		28.3		45.6		—		(22.2		)	14.5		—		6.1		60.1		33.0		2015
Wappingers Falls I	—		9.9		13.3		—		(6.8		)	9.9		—		3.1		23.2		16.2		2015
	$	146.4	$	602.2	$	594.2	$	1.2	$	1,159.2		$	2,433.9	$	147.6	$	1,761.4	$	3,028.2	$	1,379.2
Land held for future development	$	206.0	$	—	$	—	$	—	$	—		$	—	$	206.0	$	—	$	—	$	—

 

The aggregate cost of the total properties for federal income tax purposes was $7,088.2 million at December 31, 2019. In addition, Construction in progress was $946.3 million as we continue to build data center facilities.

* Reductions in Cost Capitalized Subsequent to Acquisition due to impairment losses recorded for the respective facility.

126

Historical Cost and Accumulated Depreciation and Amortization

The following table reconciles the historical cost and accumulated depreciation for the years ended December 31, 2019, 2018 and 2017.

	Years Ended December 31,
(amounts in millions)	2019			2018			2017
Property
Balance—beginning of period	$	5,347.5		$	3,840.8		$	2,601.6
Disposals	(15.8		)	(20.8		)	(3.4		)
Impairments	(0.7		)	—			(71.8		)
Impact of adoption of ASU 2016-02	(97.8		)	—			—
Additions (acquisitions and improvements)	856.3			1,527.5			1,314.4
Balance, end of period(1)	$	6,089.5		$	5,347.5		$	3,840.8
Accumulated Depreciation
Balance—beginning of period	$	1,054.5		$	782.4		$	578.5
Disposals	(14.0		)	(14.0		)	(1.9		)
Impairments	—			—			(14.1		)
Impact of adoption of ASU 2016-02	(19.3		)	—			—
Additions (depreciation and amortization expense)	358.0			286.1			219.9
Balance, end of period	$	1,379.2		$	1,054.5		$	782.4

(1) - Includes construction-in-progress of $946.3 million, $744.9 million and $487.1 million for the years ended December 31, 2019, 2018 and 2017, respectively that is not included in amounts reflected above in Schedule III.

127

EXHIBIT INDEX

Exhibit #	Exhibit Description
2.1	Transaction Agreement, dated as of February 4, 2017, by and among Sentinel Properties - Durham, LLC, Russo-Somerset, LLC, Sentinel Properties - Franklin, LLC, Sentinel NC-1, LLC, 800 Cottontail, LLC and CyrusOne LP (Incorporated by reference to Exhibit 2.1 of Form 10-Q, filed by the Registrant on May 10, 2017 (Registration No. 001-35789)).
2.2	Share Purchase Agreement, dated as of October 18, 2017, between Cheetah Asia Holdings LLC, CyrusOne LLC and GDS Holdings Limited (Incorporated by reference to Exhibit 2.1 of Form 8-K, filed by the Registrant on October 24, 2017 (Registration No. 001-35789)).
2.3(a)	Sale and Purchase Agreement dated December 21, 2017 among Zenium Topco Limited, CyrusOne Dutch Holdings B.V., ZTP Seller Rep, LLC, CyrusOne LP and certain other sellers named thereto (Incorporated by reference to Exhibit 99.1 of Form 8-K, filed by the Registrant on December 28, 2017 (Registration No. 001-35789)).
2.3(b)	Extension Letter to Sale and Purchase Agreement dated December 21, 2017 among Zenium TopCo Limited, CyrusOne Dutch Holdings B.V., ZTP Seller Rep, LLC, CyrusOne LP and certain other sellers named thereto dated April 20, 2018 (Incorporated by reference to Exhibit 99.1 of Form 8-K, filed by CyrusOne Inc. on April 27, 2018 (Registration No. 001-35789)).
2.3(c)	Extension Letter to Sale and Purchase Agreement dated December 21, 2017 among Zenium TopCo Limited, CyrusOne Dutch Holdings B.V., ZTP Seller Rep, LLC, CyrusOne LP and certain other sellers named thereto dated April 26, 2018 (Incorporated by reference to Exhibit 99.2 of Form 8-K, filed by CyrusOne Inc. on April 27, 2018 (Registration No. 001-35789)).
2.3(d)	Extension Letter to Sale and Purchase Agreement dated December 21, 2017 among Zenium TopCo Limited, CyrusOne Dutch Holdings B.V., ZTP Seller Rep, LLC, CyrusOne LP and certain other sellers named thereto dated May 17, 2018 (Incorporated by reference to Exhibit 99.1 of Form 8-K, filed by CyrusOne Inc. on May 21, 2018 (Registration No. 001-35789)).
2.3(e)	Extension Letter to Sale and Purchase Agreement dated December 21, 2017 among Zenium TopCo Limited, CyrusOne Dutch Holdings B.V., ZTP Seller Rep, LLC, CyrusOne LP and certain other sellers named thereto dated May 25, 2018 (Incorporated by reference to Exhibit 99.1 of Form 8-K, filed by CyrusOne Inc. on May 29, 2018 (Registration No. 001-35789)).
2.3(f)	Extension Letter to Sale and Purchase Agreement dated December 21, 2017 among Zenium TopCo Limited, CyrusOne Dutch Holdings B.V., ZTP Seller Rep, LLC, CyrusOne LP and certain other sellers named thereto dated June 28, 2018 (Incorporated by reference to Exhibit 99.1 of Form 8-K, filed by CyrusOne Inc. on June 29, 2018 (Registration No. 001-35789)).
2.3(g)	Extension Letter to Sale and Purchase Agreement dated December 21, 2017 among Zenium TopCo Limited, CyrusOne Dutch Holdings B.V., ZTP Seller Rep, LLC, CyrusOne LP and certain other sellers named thereto dated July 19, 2018 (Incorporated by reference to Exhibit 99.1 of Form 8-K, filed by CyrusOne Inc. on July 20, 2018 (Registration No. 001-35789)).
2.3(h)	Extension Letter to Sale and Purchase Agreement dated December 21, 2017 among Zenium TopCo Limited, CyrusOne Dutch Holdings B.V., ZTP Seller Rep, LLC, CyrusOne LP and certain other sellers named thereto dated July 27, 2018 (Incorporated by reference to Exhibit 99.1 of Form 8-K, filed by CyrusOne Inc. on July 30, 2018 (Registration No. 001-35789)).
2.3(i)	Extension Letter to Sale and Purchase Agreement dated December 21, 2017 among Zenium TopCo Limited, CyrusOne Dutch Holdings B.V., ZTP Seller Rep, LLC, CyrusOne LP and certain other sellers named thereto dated August 10, 2018 (Incorporated by reference to Exhibit 99.1 of Form 8-K, filed by CyrusOne Inc. on August 13, 2018 (Registration No. 001-35789)).
2.3(j)	Extension Letter to Sale and Purchase Agreement dated December 21, 2017 among Zenium TopCo Limited, CyrusOne Dutch Holdings B.V., ZTP Seller Rep, LLC, CyrusOne LP and certain other sellers named thereto dated August 15, 2018 (Incorporated by reference to Exhibit 99.1 of Form 8-K, filed by CyrusOne Inc. on August 17, 2018 (Registration No. 001-35789)).
3.1	Articles of Amendment and Restatement of CyrusOne Inc. (Incorporated by reference to Exhibit 3.1 of Form 8-K, filed by the Registrant on January 25, 2013 (Registration No. 001-35789)).
3.2	Amended and Restated Bylaws of CyrusOne Inc. (Incorporated by reference to Exhibit 3.1 of Form 8-K, filed by the Registrant on March 17, 2017 (Registration No. 001-35789)).

128

4.1(a)	Indenture, dated as of March 17, 2017, by and among CyrusOne LP and CyrusOne Finance Corp., as issuers, the guarantors party thereto and Wells Fargo Bank, N.A., as trustee, relating to the 5.000% Senior Notes due 2024 (Incorporated by reference to Exhibit 4.1 of Form 8-K, filed by the Registrant on March 17, 2017 (Registration No. 001-35789)).
4.1(b)	First Supplemental Indenture dated as of October 2, 2018, by and among C1-Allen LLC, C1-ATL LLC, C1-Mesa LLC, C1-Sterling VIII LLC, Warhol TRS LLC, Warhol Partnership LLC, Warhol REIT LLC, C1-Santa Clara LLC, CyrusOne LP, CyrusOne Finance Corp., the other guarantors party thereto and Wells Fargo Bank, N.A., as trustee, relating to the 5.000% Senior Notes due 2024. (Incorporated by reference to Exhibit 4.1(b) of Form 10-K, filed by CyrusOne Inc. on February 22, 2019 (Registration No. 001-35789))
4.1(c)	Second Supplemental Indenture, dated as of October 30, 2019, by and among CyrusOne LP and CyrusOne Finance Corp., as issuers, the guarantors party thereto and Wells Fargo Bank, N.A., as trustee, relating to the 5.000% Senior Notes due 2024 (Incorporated by reference to Exhibit 4.1(c) of Form 10-Q, filed by CyrusOne Inc. on October 31, 2019 (Registration No. 001-35789)).
4.1(d)	Third Supplemental Indenture, dated as of December 5, 2019, by and among CyrusOne LP and CyrusOne Finance Corp., as issuers, the guarantors party thereto and Wells Fargo Bank, N.A., as trustee, relating to the 5.000% Senior Notes due 2024 (Incorporated by reference to Exhibit 4.4 of Form 8-K, filed by CyrusOne Inc. on December 5, 2019 (Registration No. 001-35789)).
4.2(a)	Indenture, dated as of March 17, 2017, by and among CyrusOne LP and CyrusOne Finance Corp., as issuers, the guarantors party thereto and Wells Fargo Bank, N.A., as trustee, relating to the 5.375% Senior Notes due 2027 (Incorporated by reference to Exhibit 4.2 of Form 8-K, filed by the Registrant on March 17, 2017 (Registration No. 001-35789)).
4.2(b)	First Supplemental Indenture dated as of October 2, 2018, by and among C1-Allen LLC, C1-ATL LLC, C1-Mesa LLC, C1-Sterling VIII LLC, Warhol TRS LLC, Warhol Partnership LLC, Warhol REIT LLC, C1-Santa Clara LLC, CyrusOneLP,CyrusOne Finance Corp., the other guarantors party thereto and Wells Fargo Bank, N.A., as trustee, relating to the 5.375%Senior Notes due 2027. (Incorporated by reference to Exhibit 4.2(b) of Form 10-K, filed by CyrusOne Inc. on February 22, 2019 (Registration No. 001-35789)).
4.2(c)	Second Supplemental Indenture, dated as of October 30, 2019, by and among CyrusOne LP and CyrusOne Finance Corp., as issuers, the guarantors party thereto and Wells Fargo Bank, N.A., as trustee, relating to the 5.375% Senior Notes due 2027 (Incorporated by reference to Exhibit 4.2(c) of Form 10-Q, filed by CyrusOne Inc. on October 31, 2019 (Registration No. 001-35789)).
4.2(d)	Third Supplemental Indenture, dated as of December 5, 2019, by and among CyrusOne LP and CyrusOne Finance Corp., as issuers, the guarantors party thereto and Wells Fargo Bank, N.A., as trustee, relating to the 5.375% Senior Notes due 2027 (Incorporated by reference to Exhibit 4.5 of Form 8-K, filed by CyrusOne Inc. on December 5, 2019 (Registration No. 001-35789)).
4.3(a)	Indenture, dated as of December 5, 2019, by and among CyrusOne LP and CyrusOne Finance Corp., as issuers, and Wells Fargo Bank, N.A., as trustee (Incorporated by reference to Exhibit 4.1 of Form 8-K, filed by CyrusOne Inc. on December 5, 2019 (Registration No. 001-35789)).
4.3(b)	First Supplemental Indenture, dated as of December 5, 2019, by and among CyrusOne LP and CyrusOne Finance Corp., as issuers, CyrusOne Inc., as guarantor and Wells Fargo Bank, N.A., as trustee, relating to the 2.900% Senior Notes due 2024 (Incorporated by reference to Exhibit 4.2 of Form 8-K, filed by CyrusOne Inc. on December 5, 2019 (Registration No. 001-35789)).
4.3(c)	Second Supplemental Indenture, dated as of December 5, 2019, by and among CyrusOne LP and CyrusOne Finance Corp., as issuers, CyrusOne Inc., as guarantor and Wells Fargo Bank, N.A., as trustee, relating to the 3.450% Senior Notes due 2029 (Incorporated by reference to Exhibit 4.3 of Form 8-K, filed by CyrusOne Inc. on December 5, 2019 (Registration No. 001-35789)).
4.3(d)	Third Supplemental Indenture, dated as of January 22, 2020, by and among CyrusOne LP and CyrusOne Finance Corp., as issuers, CyrusOne Inc., as guarantor, Wells Fargo Bank, N.A., as trustee, and Deutsche Bank Trust Company Americas, as paying agent and security registrar (Incorporated by reference to Exhibit 4.2 of Form 8-K, filed by CyrusOne Inc. on January 22, 2020 (Registration No. 001-35789)).
4.4	Form of Certificate for Common Stock of CyrusOne Inc. (Incorporated by reference to Exhibit 4.1 of Amendment No. 5 to the Registrant’s Registration Statement on Form S-11/A, filed by the Registrant on December 13, 2012 (Registration No. 333-183132)).
4.5+	Description of Securities.
10.1	Certificate of Limited Partnership of CyrusOne LP (Incorporated by reference to Exhibit 3.3 of Form S-4, filed by CyrusOne LP on October 28, 2015 (Registration No. 333-207647)).

129

10.2	Amended and Restated Limited Partnership Agreement of CyrusOne LP (Incorporated by reference to Exhibit 10.1 of Form 8-K, filed by CyrusOne Inc. on May 4, 2016 (Registration No. 001-35789)).
10.3	First Amendment to the Amended and Restated Agreement of Limited Partnership of CyrusOne LP, dated as of February 18, 2019. (Incorporated by reference to Exhibit 10.3 of Form 10-K, filed by CyrusOne Inc. on February 22, 2019 (Registration No. 001-35789))
10.4(a)	Credit Agreement, dated as of March 29, 2018, among CyrusOne LP, the subsidiary borrowers party thereto, the lenders party thereto, JPMorgan Chase Bank, N.A., as administrative agent for the lenders, KeyBank National Association, as syndication agent, and JPMorgan Chase Bank, N.A., KeyBanc Capital Markets Inc., Barclays Bank PLC, RBC Capital Markets, LLC and TD Securities (USA) LLC, as joint lead arrangers and joint bookrunners (Incorporated by reference to Exhibit 10.1 of Form 8-K, filed by the Registrant on April 4, 2018 (Registration No. 001-35789)).
10.4(b)	Joinder Agreement dated as of October 2, 2018, by and among C1-Allen LLC, C1-ATL LLC, C1-Mesa LLC, C1-Sterling VIII LLC, Warhol TRS LLC, Warhol Partnership LLC, Warhol REIT LLC, C1-Santa Clara LLC and acknowledged by JPMorgan Chase Bank, N.A., relating to the Credit Agreement, dated as of March 29, 2018, among CyrusOne LP, the subsidiary borrowers party thereto, the lenders party thereto, JPMorgan Chase Bank, N.A., as administrative agent for the lenders, KeyBank National Association, as syndication agent, and JPMorgan Chase Bank, N.A., KeyBanc Capital Markets Inc., Barclays Bank PLC, RBC Capital Markets, LLC and TD Securities (USA) LLC, as joint lead arrangers and joint bookrunners (Incorporated by reference to Exhibit 10.5(b) of Form 10-K, filed by CyrusOne Inc. on February 22, 2019 (Registration No. 001-35789)).
10.5	Form of 2018 Sales Agreement, dated February 27, 2018, by and among CyrusOne Inc., CyrusOne GP, CyrusOne LP and each of Barclays Capital Inc., Deutsche Bank Securities Inc., Goldman Sachs & Co. LLC, Jefferies LLC, KeyBanc Capital Markets Inc., Merrill Lynch, Pierce, Fenner & Smith Incorporated, Morgan Stanley & Co. LLC, Raymond James & Associates, Inc., RBC Capital Markets, LLC, Stifel, Nicolaus & Company, Incorporated and SunTrust Robinson Humphrey, Inc. (Incorporated by reference to Exhibit 1.1 of Form 8-K, filed by the Registrant on February 27, 2018 (Registration No. 001-35789)).
10.6	Forward Sale Agreement, dated September 25, 2018, between CyrusOne Inc. and Morgan Stanley & Co. LLC (Incorporated by reference to Exhibit 1.2 of Form 8-K, filed by CyrusOne Inc. on October 1, 2018 (Registration No. 001-35789)).
10.7	Form of Forward/Primary Sales Agreement, dated November 19, 2018, by and among CyrusOne Inc., CyrusOne GP, CyrusOne LP and each of Barclays Capital Inc., BMO Capital Markets Corp., Deutsche Bank Securities Inc., Goldman Sachs & Co. LLC, Jefferies LLC, KeyBanc Capital Markets Inc., Merrill Lynch, Pierce, Fenner & Smith Incorporated, Morgan Stanley & Co. LLC, MUFG Securities Americas Inc., Raymond James & Associates, Inc. and RBC Capital Markets, LLC (Incorporated by reference to Exhibit 1.1 of Form 8-K, filed by CyrusOne Inc. on November 19, 2018 (Registration No. 001-35789)).
10.8	Form of Primary Sales Agreement, dated November 19, 2018, by and among CyrusOne Inc., CyrusOne GP, CyrusOne LP and each of Capital One Securities, Inc., Stifel, Nicolaus & Company, Incorporated, SunTrust Robinson Humphrey, Inc. and TD Securities (USA) LLC (Incorporated by reference to Exhibit 1.2 of Form 8-K, filed by CyrusOne Inc. on November 19, 2018 (Registration No. 001-35789)).
10.9(a)	Form of Indemnification Agreement between CyrusOne Inc. and its directors and officers. (Incorporated by reference to Exhibit 10.5 of Amendment No. 5 to the Registrant’s Registration Statement on Form S-11/A, filed by the Registrant on December 13, 2012 (Registration No. 333-183132)).
10.9(b)	Form of Indemnification Agreement between CyrusOne Inc. and its directors and officers. (Incorporated by reference to Exhibit 10.1 of Form 8-K, filed by CyrusOne Inc. on July 27, 2016 (Registration No. 001-35789)).
10.10†	CyrusOne 2012 Long Term Incentive Plan. (Incorporated by reference to Exhibit 10.7 of Amendment No. 3 to the Registrant’s Registration Statement on Form S-11/A, filed by the Registrant on November 16, 2012 (Registration No. 333-183132)).
10.11†	CyrusOne 2013 Short Term Incentive Plan (Incorporated by reference to Exhibit 10.8 of Amendment No. 3 to the Registrant’s Registration Statement on Form S-11/A, filed by the Registrant on November 16, 2012 (Registration No. 333-183132)).
10.12†	Employment Agreement, dated as of January 24, 2013, by and between CyrusOne LLC and Gary J. Wojtaszek (Incorporated by reference to Exhibit 10.5 of Form 8-K, filed by the Registrant on January 29, 2013 (Registration No. 001-35789)).
10.13†	Employment Agreement, dated as of January 24, 2013, by and between CyrusOne LLC and Kevin L. Timmons (Incorporated by reference to Exhibit 10.8 of Form 8-K, filed by the Registrant on January 29, 2013 (Registration No. 001-35789)).

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10.14(a)†	Employment Agreement, dated as of January 24, 2013, by and between CyrusOne LLC and Venkatesh S. Durvasula (Incorporated by reference to Exhibit 10.18 of Form 10-K, filed by the Registrant on March 29, 2013 (Registration No. 001-35789)).
10.14(b)†	Long-Term International Assignment Letter, dated October 30, 2018, by and between CyrusOne LLC and Venkatesh S. Durvasula (Incorporated by reference to Exhibit 10.15(a) of Form 10-K, filed by CyrusOne Inc. on February 22, 2019 (Registration No. 001-35789)).
10.14(c)†	Offer Letter, dated as of November 6, 2018, by and between CyrusOne LLC and Venkatesh S. Durvasula (Incorporated by reference to Exhibit 10.15(b) of Form 10-K, filed by CyrusOne Inc. on February 22, 2019 (Registration No. 001-35789)).
10.14(d)†	Transition and Separation Agreement dated as of January 13, 2020 by and between Venkatesh S. Durvasula and CyrusOne LLC (Incorporated by reference to Exhibit 10.1 of Form 8-K/A, filed by CyrusOne Inc. on January 17, 2020) (Registration No. 001-35789).
10.15†	Employment Agreement dated as of July 31, 2015, by and between CyrusOne LLC and Robert M. Jackson (Incorporated by reference to Exhibit 10.1 of Form 8-K, filed by the Registrant on August 3, 2015 (Registration No. 001-35789)).
10.16†	Employment Agreement, dated as of July 31, 2015, by and between CyrusOne LLC and Amitabh Rai (Incorporated by reference to Exhibit 10.3 of Form 8-K, filed by CyrusOne Inc. on August 3, 2015 (Registration No. 001-35789)).
10.17†	Form of Executive Non-Statutory Performance Stock Option Award under the provisions of the CyrusOne 2012 Long Term Incentive Plan (Incorporated by reference to Exhibit 10.1 of Form 8-K, filed by the Registrant on April 22, 2013 (Registration No. 001-35789)).
10.18†	Form of Employee Non-Statutory Performance Stock Option Award under the provisions of the CyrusOne 2012 Long Term Incentive Plan (Incorporated by reference to Exhibit 10.2 of Form 8-K, filed by the Registrant on April 22, 2013 (Registration No. 001-35789)).
10.19†	Form of Executive Time-Based Restricted Stock Award under the provisions of the CyrusOne 2012 Long Term Incentive Plan (Incorporated by reference to Exhibit 10.7 of Form 10-Q, filed by CyrusOne Inc. on August 7, 2015 (Registration No. 001-35789)).
10.20†	Form of Executive Performance Restricted Stock Award under the provisions of the CyrusOne 2012 Long Term Incentive Plan (Incorporated by reference to Exhibit 10.8 of Form 10-Q, filed by CyrusOne Inc. on August 7, 2015 (Registration No. 001-35789)).
10.21†	Form of Executive Non-Statutory Stock Option Award under the provisions of the CyrusOne 2012 Long Term Incentive Plan (Incorporated by reference to Exhibit 10.9 of Form 10-Q, filed by CyrusOne Inc. on August 7, 2015 (Registration No. 001-35789)).
10.22†	Form of Employee Time-Based Restricted Stock Award under the provisions of the CyrusOne 2012 Long Term Incentive Plan (Incorporated by reference to Exhibit 10.3 of Form 10-Q, filed by CyrusOne Inc. on May 6, 2016 (Registration No. 001-35789)).
10.23†	Form of Director Restricted Stock Award under the provisions of the CyrusOne 2012 Long Term Incentive Plan (Incorporated by reference to Exhibit 10.4 of Form 10-Q, filed by CyrusOne Inc. on May 6, 2016 (Registration No. 001-35789))
10.24†	Form of Executive Non-Statutory Stock Option Award under the provisions of the CyrusOne 2012 Long Term Incentive Plan (Incorporated by reference to Exhibit 10.5 of Form 10-Q, filed by CyrusOne Inc. on May 6, 2016 (Registration No. 001-35789))
10.25†	Form of Executive Performance Restricted Stock Award under the provisions of the CyrusOne 2012 Long Term Incentive Plan (Incorporated by reference to Exhibit 10.6 of Form 10-Q, filed by CyrusOne Inc. on May 6, 2016 (Registration No. 001-35789))
10.26†	Form of Executive Time-Based Restricted Stock Award under the provisions of the CyrusOne 2012 Long Term Incentive Plan (Incorporated by reference to Exhibit 10.7 of Form 10-Q, filed by CyrusOne Inc. on May 6, 2016 (Registration No. 001-35789))
10.27†	Form of Executive Retention Restricted Stock Award under the provisions of the CyrusOne 2012 Long Term Incentive Plan (Incorporated by reference to Exhibit 10.8 of Form 10-Q, filed by CyrusOne Inc. on May 6, 2016 (Registration No. 001-35789))
10.28†	Form of Employee Retention Restricted Stock Award under the provisions of the CyrusOne 2012 Long Term Incentive Plan (Incorporated by reference to Exhibit 10.9 of Form 10-Q, filed by CyrusOne Inc. on May 6, 2016 (Registration No. 001-35789)).

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10.29†	Employment Agreement, dated as of November 14, 2016, by and between CyrusOne LLC and Diane M. Morefield (Incorporated by reference to Exhibit 10.1 of Form 8-K, filed by CyrusOne Inc. on October 31, 2016 (Registration No. 001-35789))
10.30†	CyrusOne Restated 2012 Long Term Incentive Plan (Incorporated by reference to Exhibit 99.1 of Form S-8, filed by CyrusOne Inc. on July 1, 2016 (Registration No. 001-35789)).
10.31†	Form of Time-Based Restricted Stock Award under the Restated CyrusOne 2012 Long Term Incentive Plan (Incorporated by reference to Exhibit 10.42 of Form 10-K/A, filed by CyrusOne Inc. on February 28, 2017 (Registration No. 001-35789))
10.32†	Form of Director Restricted Stock Award under the provisions of the CyrusOne Restated 2012 Long Term Incentive Plan. (Incorporated by reference to Exhibit 10.1 of Form 10-Q, filed by CyrusOne Inc. on May 10, 2017 (Registration No. 001-35789)).
10.33†	Form of Executive Time-Based Restricted Stock Unit Award under the provisions of the CyrusOne Restated 2012 Long Term Incentive Plan. (Incorporated by reference to Exhibit 10.2 of Form 10-Q, filed by CyrusOne Inc. on May 10, 2017 (Registration No. 001-35789)).
10.34†	Form of Executive Performance-Based Restricted Stock Unit Award under the provisions of the CyrusOne Restated 2012 Long Term Incentive Plan. (Incorporated by reference to Exhibit 10.3 of Form 10-Q, filed by CyrusOne Inc. on May 10, 2017 (Registration No. 001-35789)).
10.35†	CyrusOne Restated 2012 Long Term Incentive Plan (as amended and restated February 18, 2019) (Incorporated by reference to Exhibit 10.36 of Form 10-K, filed by CyrusOne Inc. on February 22, 2019 (Registration No. 001-35789)).
10.36+	Form of Amendment to 2017-2019 PSU Grant Agreements
21.1+	Subsidiaries of the Registrant
23.1+	Consent of Deloitte & Touche LLP
31.1+	Certification pursuant to 18 U.S.C. § 1350, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2+	Certification pursuant to 18 U.S.C. § 1350, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1++	Certification pursuant to 18 U.S.C. § 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2++	Certification pursuant to 18 U.S.C. § 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
(101.INS)*	XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
(101.SCH)*	XBRL Taxonomy Extension Schema Document.
(101.CAL)*	XBRL Taxonomy Extension Calculation Linkbase Document.
(101.DEF)*	XBRL Taxonomy Extension Definition Linkbase Document.
(101.LAB)*	XBRL Taxonomy Extension Label Linkbase Document.
(101.PRE)*	XBRL Taxonomy Extension Presentation Linkbase Document.
(104)*	Cover Page Interactive Data File - the cover page interactive data file does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document (included in Exhibit 101).
+	Filed herewith.
++	Furnished herewith.
*	Submitted electronically with this report.
†	This exhibit is a management contract or compensation plan or arrangement.

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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized, on the 20th day of February, 2020, and this report has been signed below on such date by the following persons on behalf of the registrant and in the capacities indicated.

CyrusOne Inc.
By:	/s/ Gary J. Wojtaszek
	Gary J. Wojtaszek
	President, Chief Executive Officer, and Director
	(Principal Executive Officer)
By:	/s/ Diane M. Morefield
	Diane M. Morefield
	Executive Vice President and Chief Financial Officer
	(Principal Financial Officer)
By:	/s/ Mark E. Skomal
	Mark E. Skomal
	Senior Vice President and Chief Accounting Officer
	(Principal Accounting Officer)

133

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the date indicated.

Signature	Title	Date
/s/ Gary J. Wojtaszek	President, Chief Executive Officer	February 20, 2020
Gary J. Wojtaszek	and Director
/s/ Alex Shumate	Chairman of the Board of Directors	February 20, 2020
Alex Shumate
/s/ David H. Ferdman	Director	February 20, 2020
David H. Ferdman
/s/ John W. Gamble Jr.	Director	February 20, 2020
John W. Gamble Jr.
/s/ Michael A. Klayko	Director	February 20, 2020
Michael A. Klayko
/s/ T. Tod Nielsen	Director	February 20, 2020
T. Tod Nielsen
/s/ William E. Sullivan	Director	February 20, 2020
William E. Sullivan
/s/ Lynn Wentworth	Director	February 20, 2020
Lynn Wentworth

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EX-4.5

Exhibit 4.5

DESCRIPTION OF THE REGISTRANT’S SECURITIES

REGISTERED PURSUANT TO SECTION 12 OF THE

SECURITIES EXCHANGE ACT OF 1934

The following is a summary of the general terms of the common stock of CyrusOne Inc., a Maryland corporation (“we,” “our,” “us” and “our company”). This description does not purport to be complete and is subject to, and qualified in its entirety by, reference to the Maryland General Corporation Law (the ”MGCL”) and our charter (the “charter”) and bylaws (“bylaws”). Copies of our charter and bylaws are filed as exhibits to our most recent Annual Report on Form 10-K with the United States Securities and Exchange Commission, and are incorporated herein by reference.

GENERAL

Our charter provides that we may issue up to 500,000,000 shares of common stock, $0.01 par value per share, and 100,000,000 shares of preferred stock, $0.01 par value per share. Our charter authorizes our board of directors, without stockholder approval, to amend our charter to increase or decrease the aggregate number of shares of stock that we are authorized to issue or the number of authorized shares of any class or series of stock. Under Maryland law, our stockholders generally are not liable for our debts or obligations solely as a result of their status as stockholders.

COMMON STOCK

Distributions

Subject to the preferential rights, if any, of holders of any other class or series of our stock and to the provisions of our charter relating to the restrictions on ownership and transfer of our stock, holders of our common stock are entitled to receive distributions when authorized by our board of directors and declared by us out of assets legally available for distribution to our stockholders and are entitled to share ratably in our assets legally available for distribution to our stockholders in the event of our liquidation, dissolution or winding up after payment of or adequate provision for all of our known debts and liabilities.

Voting Rights

Subject to the provisions of our charter regarding the restrictions on ownership and transfer of our stock and except as may be otherwise specified in the terms of any class or series of common stock, each outstanding share of common stock entitles the holder to one vote on all matters submitted to a vote of stockholders, including the election of directors, and, except as may be provided with respect to any other class or series of our stock, the holders of shares of our common stock possess the exclusive voting power. There is no cumulative voting in the election of directors. Consequently, the holders of a majority of the outstanding shares of our common stock can elect all of the directors then standing for election, and the holders of the

remaining shares will not be able to elect any directors. Directors are elected by a plurality of all of the votes cast in the election of directors.

Under the MGCL, a Maryland corporation generally cannot dissolve, amend its charter, merge or consolidate with, or convert to, another entity, sell all or substantially all of its assets or engage in a statutory share exchange unless the action is advised by the board of directors and approved by the affirmative vote of stockholders entitled to cast at least two-thirds of the votes entitled to be cast on the matter, unless a lesser percentage (but not less than a majority of all of the votes entitled to be cast on the matter) is specified in the corporation’s charter. Our charter provides that these actions must be approved by a majority of all of the votes entitled to be cast on the matter.

Maryland law also permits a corporation to transfer all or substantially all of its assets without the approval of its stockholders to an entity owned, directly or indirectly, by the corporation. Because our operating assets are held by our operating partnership’s subsidiaries, these subsidiaries may be able to merge or transfer all or substantially all of their assets without the approval of our stockholders.

Other Rights

Holders of shares of our common stock have no preference, conversion, exchange, sinking fund, redemption or appraisal rights and have no preemptive rights to subscribe for any securities of our company. Subject to the provisions of our charter regarding the restrictions on ownership and transfer of our stock, shares of our common stock have equal distribution, liquidation and other rights.

Power to Increase or Decrease Authorized Shares of Common Stock, Reclassify Unissued Shares of Common Stock and Issue Additional Shares of Common Stock

Our charter authorizes our board of directors, with the approval of a majority of the entire board and without stockholder approval, to amend our charter to increase or decrease the aggregate number of shares of stock or the number of shares of any class or series of stock that we are authorized to issue. In addition, our charter authorizes our board of directors to authorize the issuance from time to time of shares of our common stock.

Our charter also authorizes our board of directors to classify and reclassify any unissued shares of our common stock into other classes or series of stock, including one or more classes or series of stock that have priority over our common stock with respect to voting rights, distributions or upon liquidation, and authorize us to issue the newly classified shares. Prior to the issuance of shares of each new class or series of stock, our board of directors is required by Maryland law and by our charter to set, subject to the provisions of our charter regarding the restrictions on ownership and transfer of our stock, the preferences, conversion and other rights, voting powers, restrictions, limitations as to distributions, qualifications and terms and conditions of redemption for each class or series. Therefore, although our board of directors does not currently intend to do so, it could authorize the issuance of shares of common stock with terms and conditions that could have the effect of delaying, deferring or preventing a change in control

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or other transaction that might involve a premium price for shares of our common stock or otherwise be in the best interests of our stockholders.

We believe that the power of our board of directors to approve amendments to our charter to increase or decrease the number of authorized shares of stock, to authorize us to issue additional authorized but unissued shares of common stock and to classify or reclassify unissued shares of common stock and thereafter to authorize us to issue such classified or reclassified shares of stock provides us with increased flexibility in structuring possible future financings and acquisitions and in meeting other needs that might arise.

Transfer Agent and Registrar

The transfer agent and registrar for our common stock is Computershare Trust Company N.A.

Listing

Our common stock is listed on the NASDAQ Global Select Market under the symbol “CONE.”

Restrictions on Ownership and Transfer

In order for us to qualify as a real estate investment trust (“REIT”) under the Internal Revenue Code of 1986, as amended (the “Code”), shares of our stock must be owned by 100 or more persons during at least 335 days of a taxable year of 12 months (other than the first year for which an election to qualify as a REIT has been made) or during a proportionate part of a shorter taxable year. Also, not more than 50% of the value of the outstanding shares of our stock may be owned, directly or indirectly, by five or fewer individuals (as defined in the Code to include certain entities such as private foundations) during the last half of a taxable year (other than the first year for which an election to be a REIT has been made). To qualify as a REIT, we must satisfy other requirements as well.

Our charter contains restrictions on the ownership and transfer of our stock. Our board may, from time to time, grant waivers from these restrictions, in its sole discretion. The relevant sections of our charter provide that, subject to the exceptions described below, no person or entity may own, or be deemed to own, beneficially or by virtue of the applicable constructive ownership provisions of the Code, more than 9.8%, in value or in number of shares, whichever is more restrictive, of the outstanding shares of our common stock (the “common stock ownership limit”) or 9.8% in value of the outstanding shares of all classes or series of our stock (the “aggregate stock ownership limit”). We refer to the common stock ownership limit and the aggregate stock ownership limit collectively as the “ownership limits.” We refer to the person or entity that, but for operation of the ownership limits or another restriction on ownership and transfer of our stock as described below, would beneficially own or constructively own shares of our stock in violation of such limits or restrictions and, if appropriate in the context, a person or entity that would have been the record owner of such shares of our stock as a “prohibited owner.”

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The constructive ownership rules under the Code are complex and may cause shares of stock owned beneficially or constructively by a group of related individuals and/or entities to be owned beneficially or constructively by one individual or entity. As a result, the acquisition of less than 9.8%, in value or in number of shares, whichever is more restrictive, of the outstanding shares of our common stock, or less than 9.8% in value of the outstanding shares of all classes and series of our stock (or the acquisition by an individual or entity of an interest in an entity that owns, beneficially or constructively, shares of our stock), could, nevertheless, cause that individual or entity, or another individual or entity, to own beneficially or constructively shares of our stock in excess of the ownership limits.

Our board of directors, in its sole discretion, may exempt, prospectively or retroactively, a particular stockholder from the ownership limits or establish a different limit on ownership (the “excepted holder limit”) if our board of directors determines that:

• no individual’s beneficial or constructive ownership of our stock will result in our being “closely held” under Section 856(h) of the Code (without regard to whether the ownership interest is held during the last half of a taxable year) or otherwise failing to qualify as a REIT; and

• such stockholder does not and will not own, actually or constructively, an interest in a tenant of ours (or a tenant of any entity owned or controlled by us) that would cause us to own, actually or constructively, more than a 9.9% interest (as set forth in Section 856(d)(2)(B) of the Code) in such tenant (or our board of directors determines that revenue derived from such tenant will not affect our ability to qualify as a REIT).

Any violation or attempted violation of any such representations or undertakings will result in such stockholder’s shares of stock being automatically transferred to a charitable trust. As a condition of granting the waiver or establishing the excepted holder limit, our board of directors may require an opinion of counsel or a ruling from the IRS, in either case in form and substance satisfactory to our board of directors, in its sole discretion, in order to determine or ensure our status as a REIT and such representations and undertakings from the person requesting the exception as our board of directors may require in its sole discretion to make the determinations above. Our board of directors may impose such conditions or restrictions as it deems appropriate in connection with granting such a waiver or establishing an excepted holder limit. As of the date hereof, our board has granted limited waivers to certain holders of our common stock.

In connection with granting a waiver of the ownership limits or creating an excepted holder limit or at any other time, our board of directors may from time to time increase or decrease the common stock ownership limit, the aggregate stock ownership limit or both, for all other persons, unless, after giving effect to such increase, five or fewer individuals could beneficially own, in the aggregate, more than 49.9% in value of our outstanding stock or we would otherwise fail to qualify as a REIT. A reduced ownership limit will not apply to any person or entity whose percentage ownership of our common stock or our stock of all classes and series, as applicable, is, at the effective time of such reduction, in excess of such decreased ownership limit until such time as such person’s or entity’s percentage ownership of our common

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stock or our stock of all classes and series, as applicable, equals or falls below the decreased ownership limit, but any further acquisition of shares of our common stock or stock of all other classes or series, as applicable, will violate the decreased ownership limit.

Our charter further prohibits:

• any person from beneficially or constructively owning, applying certain attribution rules of the Code, shares of our stock that would result in our being “closely held” under Section 856(h) of the Code (without regard to whether the ownership interest is held during the last half of a taxable year) or otherwise cause us to fail to qualify as a REIT;

• any person from transferring shares of our stock if the transfer would result in shares of our stock being beneficially owned by fewer than 100 persons (determined under the principles of Section 856(a)(5) of the Code); and

• any person from beneficially owning shares of our stock to the extent such ownership would result in our failing to qualify as a “domestically controlled qualified investment entity” within the meaning of Section 897(h) of the Code.

Any person who acquires or attempts or intends to acquire beneficial or constructive ownership of shares of our stock that will or may violate the ownership limits or any of the other restrictions on ownership and transfer of our stock described above, or who would have owned shares of our stock transferred to the trust as described below, must immediately give notice to us of such event or, in the case of an attempted or proposed transaction, give us at least 15 days’ prior written notice and provide us with such other information as we may request in order to determine the effect of such transfer on our status as a REIT.

If any transfer of shares of our stock would result in shares of our stock being beneficially owned by fewer than 100 persons, the transfer will be null and void and the intended transferee will acquire no rights in the shares. In addition, if any purported transfer of shares of our stock or any other event would otherwise result in any person violating the ownership limits or an excepted holder limit established by our board of directors, or in our being “closely held” under Section 856(h) of the Code (without regard to whether the ownership interest is held during the last half of a taxable year) or otherwise failing to qualify as a REIT or as a “domestically controlled qualified investment entity” within the meaning of Section 897(h) of the Code, then that number of shares (rounded up to the nearest whole share) that would cause the violation will be automatically transferred to, and held by, a trust for the exclusive benefit of one or more charitable organizations selected by us, and the intended transferee or other prohibited owner will acquire no rights in the shares. The automatic transfer will be effective as of the close of business on the business day prior to the date of the violative transfer or other event that results in a transfer to the trust. If the transfer to the trust as described above is not automatically effective, for any reason, to prevent violation of the applicable ownership limits or our being “closely held” under Section 856(h) of the Code (without regard to whether the ownership interest is held during the last half of a taxable year) or our otherwise failing to qualify as a REIT or as a “domestically controlled qualified investment entity,” then our charter provides that the

5

transfer of the shares will be null and void and the intended transferee will acquire no rights in such shares.

Shares of our stock held in the trust will be issued and outstanding shares. The prohibited owner will not benefit economically from ownership of any shares of our stock held in the trust and will have no rights to distributions and no rights to vote or other rights attributable to the shares of our stock held in the trust. The trustee of the trust will exercise all voting rights and receive all distributions with respect to shares held in the trust for the exclusive benefit of the charitable beneficiary of the trust. Any distribution made before we discover that the shares have been transferred to a trust as described above must be repaid by the recipient to the trustee upon demand by us. Subject to Maryland law, effective as of the date that the shares have been transferred to the trust, the trustee will have the authority to rescind as void any vote cast by a prohibited owner before our discovery that the shares have been transferred to the trust and to recast the vote in accordance with the desires of the trustee acting for the benefit of the charitable beneficiary of the trust. However, if we have already taken irreversible corporate action, then the trustee may not rescind and recast the vote.

Shares of our stock transferred to the trustee are deemed offered for sale to us, or our designee, at a price per share equal to the lesser of (i) the price paid by the prohibited owner for the shares (or, in the case of a devise or gift, the market price at the time of such devise or gift) and (ii) the market price on the date we accept, or our designee, accepts such offer. We may reduce the amount so payable to the trustee by the amount of any distribution that we made to the prohibited owner before we discovered that the shares had been automatically transferred to the trust and that are then owed by the prohibited owner to the trustee as described above, and we may pay the amount of any such reduction to the trustee for distribution to the charitable beneficiary. We have the right to accept such offer until the trustee has sold the shares of our stock held in the trust as discussed below. Upon a sale to us, the interest of the charitable beneficiary in the shares sold terminates, and the trustee must distribute the net proceeds of the sale to the prohibited owner and must distribute any distributions held by the trustee with respect to such shares to the charitable beneficiary.

If we do not buy the shares, the trustee must, within 20 days of receiving notice from us of the transfer of shares to the trust, sell the shares to a person or entity designated by the trustee who could own the shares without violating the ownership limits or the other restrictions on ownership and transfer of our stock. After the sale of the shares, the interest of the charitable beneficiary in the shares transferred to the trust will terminate and the trustee must distribute to the prohibited owner an amount equal to the lesser of (i) the price paid by the prohibited owner for the shares (or, if the prohibited owner did not give value for the shares in connection with the event causing the shares to be held in the trust (for example, in the case of a gift, devise or other such transaction), the market price of the shares on the day of the event causing the shares to be held in the trust) and (ii) the sales proceeds (net of any commissions and other expenses of sale) received by the trust for the shares. The trustee may reduce the amount payable to the prohibited owner by the amount of any distribution that we paid to the prohibited owner before we discovered that the shares had been automatically transferred to the trust and that are then owed by the prohibited owner to the trustee as described above. Any net sales proceeds in excess of

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the amount payable to the prohibited owner must be paid immediately to the charitable beneficiary, together with any distributions thereon. In addition, if, prior to the discovery by us that shares of stock have been transferred to a trust, such shares of stock are sold by a prohibited owner, then such shares will be deemed to have been sold on behalf of the trust and, to the extent that the prohibited owner received an amount for or in respect of such shares that exceeds the amount that such prohibited owner was entitled to receive, such excess amount will be paid to the trustee upon demand. The prohibited owner has no rights in the shares held by the trustee.

In addition, if our board of directors determines in good faith that a transfer or other event has occurred that would violate the restrictions on ownership and transfer of our stock described above, our board of directors may take such action as it deems advisable to refuse to give effect to or to prevent such transfer, including, but not limited to, causing us to redeem shares of our stock, refusing to give effect to the transfer on our books or instituting proceedings to enjoin the transfer.

Every owner of 5% or more (or such lower percentage as required by the Code or the regulations promulgated thereunder) of our stock, within 30 days after the end of each taxable year, must give us written notice stating the stockholder’s name and address, the number of shares of each class and series of our stock that the stockholder beneficially owns and a description of the manner in which the shares are held. Each such owner must provide to us in writing such additional information as we may request in order to determine the effect, if any, of the stockholder’s beneficial ownership on our status as a REIT and to ensure compliance with the ownership limits. In addition, any person or entity that is a beneficial owner or constructive owner of shares of our stock and any person or entity (including the stockholder of record) who is holding shares of our stock for a beneficial owner or constructive owner must, on request, provide to us such information as we may request in good faith in order to determine our status as a REIT and to comply with the requirements of any taxing authority or governmental authority or to determine such compliance and to ensure compliance with the ownership limits.

Any certificates representing shares of our stock will bear a legend referring to the restrictions on ownership and transfer of our stock described above.

These restrictions on ownership and transfer of our stock will not apply if our board of directors determines that it is no longer in our best interests to attempt to qualify, or to continue to qualify, as a REIT or that compliance is no longer required in order for us to qualify as a REIT.

The restrictions on ownership and transfer of our stock described above could delay, defer or prevent a transaction or a change in control that might involve a premium price for our common stock or otherwise be in the best interests of our stockholders.

CERTAIN PROVISIONS OF MARYLAND LAW AND OF OUR CHARTER AND BYLAWS

Our Board of Directors

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Our board of directors currently consists of eight directors. Our charter and bylaws provide that the number of directors constituting our board of directors may be increased or decreased only by a majority vote of our board of directors, provided that the number of directors may not be decreased to fewer than the minimum number required under the MGCL, nor increased to more than 15.

Subject to the terms of any class or series of preferred stock, vacancies on our board of directors may be filled only by a majority of the remaining directors, even if the remaining directors do not constitute a quorum, and any director elected to fill a vacancy will hold office for the remainder of the full term of the directorship in which the vacancy occurred and until his or her successor is duly elected and qualifies.

Each of our directors is elected by our stockholders to serve until the next annual meeting of our stockholders and until his or her successor is duly elected and qualifies. Holders of shares of our common stock have no right to cumulative voting in the election of directors. Consequently, the holders of a majority of the outstanding shares of our common stock can elect all of the directors then standing for election, and the holders of the remaining shares will not be able to elect any directors. Directors are elected by a plurality of all of the votes cast in the election of directors.

Removal of Directors

Our charter provides that a director may be removed only for cause (as defined in our charter) and only by the affirmative vote of a majority of the votes entitled to be cast generally in the election of directors. This provision, when coupled with the exclusive power of our board of directors to fill vacancies on our board of directors, precludes stockholders from removing incumbent directors (except for cause and upon a substantial affirmative vote) and filling the vacancies created by such removal with their own nominees.

Business Combinations

Under the MGCL, certain “business combinations” (including a merger, consolidation, statutory share exchange or, in certain circumstances, an asset transfer or issuance or reclassification of equity securities) between a Maryland corporation and an interested stockholder (defined generally as any person who beneficially owns, directly or indirectly, 10% or more of the voting power of the corporation’s outstanding voting stock or an affiliate or associate of the corporation who, at any time during the two-year period immediately prior to the date in question, was the beneficial owner of 10% or more of the voting power of the then-outstanding stock of the corporation) or an affiliate of such an interested stockholder are prohibited for five years after the most recent date on which the interested stockholder becomes an interested stockholder. Thereafter, any such business combination must generally be recommended by the board of directors of the corporation and approved by the affirmative vote of at least (i) 80% of the votes entitled to be cast by holders of outstanding shares of voting stock of the corporation and (ii) two-thirds of the votes entitled to be cast by holders of voting stock of the corporation, other than shares held by the interested stockholder with whom (or with whose affiliate) the business combination is to be effected or held by an affiliate or associate of the

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interested stockholder, unless, among other conditions, the corporation’s common stockholders receive a minimum price (as defined in the MGCL) for their shares and the consideration is received in cash or in the same form as previously paid by the interested stockholder for its shares. A person is not an interested stockholder under the statute if the board of directors approved in advance the transaction by which the person otherwise would have become an interested stockholder. A corporation’s board of directors may provide that its approval is subject to compliance, at or after the time of approval, with any terms and conditions determined by the board.

Pursuant to the statute, our board of directors has by resolution exempted business combinations between us and any other person, provided that the business combination is first approved by our board of directors (including a majority of our directors who are not affiliates or associates of such person). Consequently, the five-year prohibition and the supermajority vote requirements will not apply to a business combination between us and any other person if the board of directors has first approved the combination. As a result, any person described in the preceding sentence may be able to enter into business combinations with us that may not be in the best interests of our stockholders, without compliance with the supermajority vote requirements and other provisions of the statute. We cannot assure you that our board of directors will not amend or repeal this resolution in the future.

Control Share Acquisitions

The MGCL provides that holders of “control shares” of a Maryland corporation acquired in a “control share acquisition” have no voting rights with respect to such shares except to the extent approved by the affirmative vote of at least two-thirds of the votes entitled to be cast on the matter. Shares owned by the acquirer, an officer of the corporation or an employee of the corporation who is also a director of the corporation are excluded from shares entitled to vote on the matter.

“Control shares” are voting shares of stock that, if aggregated with all other such shares of stock owned by the acquirer, or in respect of which the acquirer is able to exercise or direct the exercise of voting power (except solely by virtue of a revocable proxy), would entitle the acquirer to exercise voting power in electing directors within one of the following ranges of voting power:

• one-tenth or more but less than one-third;

• one-third or more but less than a majority; or

• a majority or more of all voting power.

Control shares do not include shares that the acquiring person is then entitled to vote as a result of having previously obtained stockholder approval or shares acquired directly from the corporation. A “control share acquisition” means the acquisition of issued and outstanding control shares, subject to certain exceptions.

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A person who has made or proposes to make a control share acquisition, upon satisfaction of certain conditions (including an undertaking to pay expenses and making an “acquiring person statement” as described in the MGCL), may compel the board of directors to call a special meeting of stockholders to be held within 50 days of demand to consider the voting rights of the shares. If no request for a meeting is made, the corporation may itself present the question at any stockholders meeting.

If voting rights are not approved at the meeting or if the acquiring person does not deliver an “acquiring person statement” as required by the statute, then, subject to certain conditions and limitations, the corporation may redeem for fair value any or all of the control shares (except those for which voting rights have previously been approved). Fair value is determined, without regard to the absence of voting rights for the control shares, as of the date of the last control share acquisition by the acquirer or, if a meeting of stockholders is held at which the voting rights of such shares are considered and not approved, as of the date of such meeting. If voting rights for control shares are approved at a stockholders’ meeting and the acquirer becomes entitled to vote a majority of the shares entitled to vote, all other stockholders may exercise appraisal rights. The fair value of the shares as determined for purposes of such appraisal rights may not be less than the highest price per share paid by the acquirer in the control share acquisition.

The control share acquisition statute does not apply to shares acquired in a merger, consolidation or statutory share exchange if the corporation is a party to the transaction or acquisitions approved or exempted by the charter or bylaws of the corporation.

Our bylaws contain a provision exempting from the control share acquisition statute any and all acquisitions by any person of shares of our stock. This provision may be amended or eliminated at any time in the future by our board of directors.

Subtitle 8

Subtitle 8 of Title 3 of the MGCL permits a Maryland corporation with a class of equity securities registered under the Securities Exchange Act of 1934, as amended, and at least three independent directors to elect to be subject, by provision in its charter or bylaws or a resolution of its board of directors and notwithstanding any contrary provision in the charter or bylaws, to any or all of five provisions of the MGCL that provide, respectively, for:

• a classified board;

• a two-thirds vote requirement for removing a director;

• a requirement that the number of directors be fixed only by vote of the board of directors;

• a requirement that a vacancy on the board be filled only by the remaining directors in office and (if the board is classified) for the remainder of the full term of the class of directors in which the vacancy occurred; and

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• a majority requirement for the calling of a stockholder-requested special meeting of stockholders.

Pursuant to Subtitle 8, we have elected to provide that vacancies on our board may be filled only by the remaining directors and that directors elected by the board to fill vacancies will serve for the remainder of the full term of the directorship in which the vacancy occurred. Through provisions in our charter and bylaws unrelated to Subtitle 8, we already (i) vest in the board the exclusive power to fix the number of directorships and (ii) require, unless called by our chairman of the board, our chief executive officer, our president or our board of directors, the written request of stockholders entitled to cast a majority of all of the votes entitled to be cast at such a meeting to call a special meeting.

Meetings of Stockholders

Pursuant to our bylaws, a meeting of our stockholders for the election of directors and the transaction of any business will be held annually on a date and at the time and place set by our board of directors. The chairman of our board of directors, our chief executive officer, our president or our board of directors may call a special meeting of our stockholders. Subject to the provisions of our bylaws, a special meeting of our stockholders to act on any matter that may properly be brought before a meeting of our stockholders must also be called by our secretary upon the written request of the stockholders entitled to cast a majority of all the votes entitled to be cast on such matter at the meeting and containing the information required by our bylaws. Our secretary will inform the requesting stockholders of the reasonably estimated cost of preparing and delivering the notice of meeting (including our proxy materials), and the requesting stockholder must pay such estimated cost before our secretary is required to prepare and deliver the notice of the special meeting.

Amendments to Our Charter and Bylaws

Except for those amendments permitted to be made without stockholder approval under Maryland law or our charter, our charter generally may be amended only if the amendment is first declared advisable by our board of directors and thereafter approved by the affirmative vote of stockholders entitled to cast a majority of all of the votes entitled to be cast on the matter.

Our board of directors has the power to adopt, alter or repeal any provision of our bylaws and to make new bylaws. In addition, stockholders may alter or repeal any provision of our bylaws and adopt new bylaws with the approval by a majority of the votes entitled to be cast on the matter.

Forum Selection

Our bylaws require, subject to limited exceptions, that any derivative action or proceeding brought on our behalf, any action asserting a claim of breach of any duty owed by any of our directors, officers or other employees to us or our stockholders and other similar actions, may be brought only in specified courts in the State of Maryland. Although we believe this provision will benefit us by limiting costly and time-consuming litigation in multiple forums

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and by providing increased consistency in the application of Maryland law in the types of lawsuits to which it applies, the provision may have the effect of discouraging lawsuits against us or our directors, officers and other employees. This provision is intended to cover internal corporate claims and not actions arising under the federal securities laws.

Transactions Outside the Ordinary Course of Business

Under the MGCL, a Maryland corporation generally may not dissolve, merge or consolidate with, or convert to, another entity, sell all or substantially all of its assets or engage in a statutory share exchange unless the action is declared advisable by the board of directors and approved by the affirmative vote of stockholders entitled to cast at least two-thirds of the votes entitled to be cast on the matter, unless a lesser percentage (but not less than a majority of all of the votes entitled to be cast on the matter) is specified in the corporation’s charter. Our charter provides that these actions must be approved by a majority of all of the votes entitled to be cast on the matter.

Advance Notice of Director Nominations and New Business

Our bylaws provide that, with respect to an annual meeting of our stockholders, nominations of individuals for election to our board of directors and the proposal of other business to be considered by our stockholders may be made only (i) pursuant to our notice of the meeting, (ii) by or at the direction of our board of directors or (iii) by any stockholder who was a stockholder of record at the record date set by the board of directors for the purpose of determining stockholders entitled to vote at the meeting, at the time of giving the notice required by our bylaws and at the time of the meeting (or any postponement or adjournment thereof), who is entitled to vote at the meeting on such business or in the election of such nominee and has provided notice to us within the time period, and containing the information and other materials, specified in the advance notice provisions of our bylaws.

With respect to special meetings of stockholders, only the business specified in our notice of meeting may be brought before the meeting. Nominations of individuals for election to our board of directors may be made only (i) by or at the direction of our board of directors or (ii) if the meeting has been called for the purpose of electing directors, by any stockholder who was a stockholder of record at the record date set by the board of directors for the purpose of determining stockholders entitled to vote at the meeting, at the time of giving the notice required by our bylaws and at the time of the meeting (or any postponement or adjournment thereof), who is entitled to vote at the meeting in the election of each such nominee and who has provided notice to us within the time period, and containing the information and other materials, specified in the advance notice provisions of our bylaws.

The advance notice procedures of our bylaws provide that, to be timely, a stockholder’s notice with respect to director nominations or other proposals for an annual meeting must be delivered to our corporate secretary at our principal executive office not earlier than the 150th day nor later than 5:00 p.m., Eastern Time, on the 120th day prior to the first anniversary of the date of the proxy statement for our preceding year’s annual meeting. In the event that the date of the annual meeting is advanced or delayed by more than 30 days from the first

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anniversary of the date of the preceding year’s annual meeting, to be timely, a stockholder’s notice must be delivered not earlier than the 150th day prior to the date of such annual meeting and not later than 5:00 p.m., Eastern Time, on the close of business on the later of the 120th day prior to the date of such annual meeting or the tenth day following the day on which public announcement of the date of such meeting is first made.

REIT Qualification

Our charter provides that our board of directors may authorize us to revoke or otherwise terminate our REIT election, without approval of our stockholders, if it determines that it is no longer in our best interests to continue to qualify as a REIT.

Effects of Certain Provisions of Maryland Law and of Our Charter and Bylaws

Our charter and bylaws and Maryland law contain provisions that may delay, defer or prevent a change in control or other transaction that might involve a premium price for shares of our common stock or otherwise be in the best interests of our stockholders, including business combination provisions, supermajority vote requirements and advance notice requirements for director nominations and other stockholder proposals. Likewise, if the provision in our bylaws opting out of the control share acquisition provisions of the MGCL were rescinded or if we were to opt in to the classified board or other provisions of Subtitle 8, these provisions of the MGCL could have similar anti-takeover effects.

Indemnification and Limitation of Directors’ and Officers’ Liability

Maryland law permits a Maryland corporation to include in its charter a provision limiting the liability of its directors and officers to the corporation and its stockholders for money damages, except for liability resulting from (i) actual receipt of an improper benefit or profit in money, property or services or (ii) active and deliberate dishonesty that is established by a final judgment and that is material to the cause of action. Our charter contains a provision that eliminates the liability of our directors and officers to the maximum extent permitted by Maryland law.

The MGCL requires us (unless our charter provides otherwise, which our charter does not) to indemnify a director or officer who has been successful, on the merits or otherwise, in the defense of any proceeding to which he or she is made a party by reason of his or her service in that capacity. The MGCL permits us to indemnify our present and former directors and officers, among others, against judgments, penalties, fines, settlements and reasonable expenses actually incurred by them in connection with any proceeding to which they may be made or threatened to be made a party by reason of their service in those or other capacities unless it is established that:

• the act or omission of the director or officer was material to the matter giving rise to the proceeding and (a) was committed in bad faith or (b) was the result of active and deliberate dishonesty;

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• the director or officer actually received an improper personal benefit in money, property or services; or

• in the case of any criminal proceeding, the director or officer had reasonable cause to believe that the act or omission was unlawful.

Under the MGCL, we may not indemnify a director or officer in a suit by us or in our right in which the director or officer was adjudged liable to us or in a suit in which the director or officer was adjudged liable on the basis that personal benefit was improperly received. A court may order indemnification if it determines that the director or officer is fairly and reasonably entitled to indemnification, even though the director or officer did not meet the prescribed standard of conduct or was adjudged liable on the basis that personal benefit was improperly received. However, indemnification for an adverse judgment in a suit by us or in our right, or for a judgment of liability on the basis that personal benefit was improperly received, is limited to expenses.

In addition, the MGCL permits us to advance reasonable expenses to a director or officer upon our receipt of:

• a written affirmation by the director or officer of his or her good faith belief that he or she has met the standard of conduct necessary for indemnification by us; and

• a written undertaking by or on behalf of the director or officer to repay the amount paid or reimbursed by us if it is ultimately determined that the director or officer did not meet the standard of conduct.

Our charter authorizes us to obligate ourselves, and our bylaws obligate us, to the maximum extent permitted by Maryland law in effect from time to time, to indemnify and, without requiring a preliminary determination of the ultimate entitlement to indemnification, pay or reimburse reasonable expenses in advance of final disposition of a proceeding to:

• any present or former director or officer who is made or threatened to be made a party to, or witness in, a proceeding by reason of his or her service in that capacity; or

• any individual who, while a director or officer of our company and at our request, serves or has served as a director, officer, partner, trustee, member or manager of another corporation, REIT, limited liability company, partnership, joint venture, trust, employee benefit plan or any other enterprise and who is made or threatened to be made a party to the proceeding by reason of his or her service in that capacity.

Our charter and bylaws also permit us to indemnify and advance expenses to any person who served a predecessor of ours in any of the capacities described above and to any employee or agent of our company or a predecessor of our company.

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We have entered into indemnification agreements with each of our directors and executive officers that provide for indemnification to the maximum extent permitted by Maryland law.

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EX-10.36

Exhibit 10.36

AMENDMENT TO 2017, 2018, AND 2019 PSU AWARD AGREEMENTS

All Performance-Based Restricted Stock Unit Awards granted in 2017, 2018, and 2019 under the provisions of the CyrusOne Restated 2012 Long Term Incentive Plan to employees who are current employees as of March 13, 2019 are hereby modified to include the following provision (except as otherwise defined herein, capitalized terms shall have the meaning set forth in the applicable Award Agreement):

Vesting Upon Certain Terminations of Employment. If the Company terminates your employment other than by reason of your death or disability or other than for Cause, or you terminate your employment for Good Reason, then, you shall vest, as of the applicable Vesting Date, pursuant to the Performance Vesting Section of your Award Agreement, with respect to any Performance Period that ends on or before your date of termination, even if the Vesting Date occurs after your date of termination. In addition, with respect to any Performance Period that ends after your date of termination, you shall vest, as of the applicable Vesting Date, in a portion of the number of Earned PSUs calculated by multiplying the number of PSUs determined pursuant to the Award Agreement (including Exhibit A) by a fraction, the numerator of which is the number of days from the beginning of the Performance Period through your date of termination and the denominator of which is the number of days in the Performance Period, and then subtracting Earned PSUs for any prior Performance Period. For purposes of this provision, “Vesting Date” shall mean the date on which Earned PSUs vest under the Award Agreement, either following the completion of a Performance Period; due to your death or disability; or upon a Change in Control if the acquirer does not assume, substitute, or otherwise continue this Award. Notwithstanding any provision of an Employment Agreement or the Award Agreement to the contrary, this section shall control over any other provisions of such agreements.

For purposes of this Agreement, “Cause” shall have the meaning set forth in any Employment Agreement, or, if you do not have an Employment Agreement, shall mean the occurrence of any one of the following: (i) your material dereliction of your duties, your gross negligence or substantial failure to perform your duties with the Company (other than any such failure resulting from incapacity due to physical or mental illness); (ii) your engaging in (A) misconduct that is materially injurious to the Company or (B) illegal conduct; (iii) your material breach of any written agreement by and between you and the Company; (iv) your violation of any material provision of the Company’s Code of Business Conduct and Ethics; or (v) your willful failure to cooperate in good faith with an investigation by any governmental authority.

For purposes of this Agreement, “Good Reason” shall have the meaning set forth in any Employment Agreement (which may refer to it as a Constructive Termination), or, if you do not have an Employment Agreement or such agreement does not include a definition of Good Reason, shall mean, without Employee’s consent, (A) there is a material adverse change in Employee’s reporting responsibilities set forth in the Employment Agreement or there is otherwise a material reduction by the CyrusOne Group in Employee’s authority, reporting relationship or responsibilities, (B) there is a material reduction by the CyrusOne Group in Employee’s base salary or bonus target, or (C) Employee’s principal place of employment is changed to a location more than fifty (50) miles outside the Dallas, Texas metro area. Notwithstanding the foregoing, no such event shall constitute Good Reason unless Employee notifies CyrusOne of the occurrence of such event within ninety (90) days after Employee first has actual knowledge of such occurrence, CyrusOne fails to cure such event to Employee’s reasonable satisfaction within thirty (30) days after receipt of such notice, and Employee resigns within thirty (30) days after the end of such cure period.

*****

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EX-21.1

Exhibit 21.1

Subsidiaries of the Registrant

(as of December 31, 2019)

Subsidiary Name	State or Country of Incorporation or Formation
CyrusOne GP	Maryland
CyrusOne LP	Maryland
CyrusOne Finance Corp.	Maryland
CyrusOne LLC	Delaware
CyrusOne TRS Inc.	Delaware
CyrusOne Foreign Holdings LLC	Delaware
CyrusOne Government Services LLC	Delaware
Cervalis Holdings LLC	Delaware
Cervalis LLC	Delaware
Cyrus One UK Holdco LLP	United Kingdom
Cyrus One UK Limited	United Kingdom
CyrusOne NC LLC	Delaware
CyrusOne NJ LLC	Delaware
C1-Allen LLC	Delaware
Cheetah Asia Holdings LLC	Delaware
Warhol TRS LLC	Delaware
Warhol Partnership LLC	Delaware
Warhol REIT LLC	Delaware
CyrusOne Dutch Holdings B.V.	Netherlands
C1-Santa Clara LLC	Delaware
C1-ATL LLC	Delaware
Interlude Properties LLC	Delaware
GK Properties IV LLC	Delaware
CyrusOne New Services TRS	Delaware
C1- Mesa LLC	Delaware
Zenium Management Limited	United Kingdom
CyrusOne Irish Datcentres Dublin II Limited	Ireland
CyrusOne Germany GmbH	Germany
CyrusOne UK3 Limited	United Kingdom
CyrusOne Dutch TRS B.V.	Netherlands
C1-Sterling VIII LLC	Delaware
Zenium Topco Limited	Cayman Islands
CyrusOne Irish Datcentres Holdings Limited	Ireland
CyrusOne Paris SAS	France
CyrusOne UK4 Limited	United Kingdom
C1 BTE Holdings LLC	Delaware
CyrusOne UK TRS Limited	United Kingdom
CyrusOne German TRS GmbH	Germany
C1-Sterling IX LLC	Delaware
Zenium Holdings Limited	Ireland
CyrusOne AMS3 B.V.	Netherlands
CyrusOne France SAS	France
C1 BTE Holdings Columbia LLC	Delaware
CyrusOne France SAS	France
CyrusOne UK5 Limited	United Kingdom
Zenium Technology Partners Limited	United Kingdom
Zenium UK Limited	United Kingdom
Zenium Germany GmbH	Germany
Echo 4 GmbH	Germany
C1 - Manassas LLC	Delaware
C1 San Antonio V	Delaware
CyrusOne Holding LLC	Delaware
C1 - Quincy LLC	Delaware
C1 - Council Bluffs LLC	Delaware
C1 BTE Holdings Chile LLC	Delaware
C1 BTE Holdings Mexico LLC	Delaware
CyrusOne Frankfurt 4 Holdings B.V.	Netherlands

EX-23.1

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement Nos. 333-212375 and 333-196432 on Form S-8, and Registration Statement Nos. 333-231203 on Form S-3ASR of our reports dated February 20, 2020, relating to (1) the consolidated financial statements of CyrusOne Inc. and (2) the effectiveness of CyrusOne Inc.’s internal control over financial reporting, appearing in this Annual Report on Form 10-K of CyrusOne Inc. for the year ended December 31, 2019.

/s/ Deloitte & Touche LLP

Dallas, Texas

February 20, 2020

EX-31.1

Exhibit 31.1

Principal Officer's Certification

Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Gary J. Wojtaszek, President and Chief Executive Officer, certify that:

1. I have reviewed this annual report on Form 10-K of CyrusOne Inc. (“registrant”);

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

February 20, 2020	/s/ Gary J. Wojtaszek
	Gary J. Wojtaszek
	President and Chief Executive Officer

EX-31.2

Exhibit 31.2

Principal Officer's Certification

Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Diane M. Morefield, Chief Financial Officer, certify that:

1. I have reviewed this annual report on Form 10-K of CyrusOne Inc. (“registrant”);

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

February 20, 2020	/s/ Diane M. Morefield
	Diane M. Morefield
	Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report on Form 10-K of CyrusOne Inc. (the “Company”) for the year ending December 31, 2019 as filed with the Securities and Exchange Commission (the “Report”), I, Gary J. Wojtaszek, President and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Gary J. Wojtaszek

Gary J. Wojtaszek

President and Chief Executive Officer

February 20, 2020

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report on Form 10-K of CyrusOne Inc. (the “Company”) for the year ending December 31, 2019 as filed with the Securities and Exchange Commission (the “Report”), I, Diane M. Morefield, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Diane M. Morefield

Diane M. Morefield

Chief Financial Officer

February 20, 2020

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Revenue Recognition - Narrative (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contracts with customers	$ 253.9	$ 250.9	$ 251.5	$ 225.0	$ 221.3	$ 206.6	$ 196.9	$ 196.6	$ 981.3	$ 821.4	$ 672.0
Balances from customers accounts receivables	$ 6.4				$ 9.4				6.4	9.4
Contracts with customers
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contracts with customers									$ 15.9	$ 13.5
Customer concentration risk | Revenue | Customer 1
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Concentration risk (as a percent)									21.00%	18.00%
Outside of the United States
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contracts with customers									$ 2.9

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Quarterly Financial Information (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Schedule of Unaudited Selected Quarterly Financial Information

The table below reflects the unaudited selected quarterly information for the years ended December 31, 2019 and 2018:

IN MILLIONS, except per share amounts
	2019
	First Quarter		Second Quarter			Third Quarter			Fourth Quarter			Total
Revenue	$	225.0	$	251.5		$	250.9		$	253.9		$	981.3
Operating income	11.8		19.7			13.2			22.3			67.0
Net income (loss)	89.4		(8.5		)	12.6			(52.1		)	41.4
Basic income (loss) per share	0.82		(0.08		)	0.11			(0.46		)	0.36
Diluted income (loss) per share	0.82		(0.08		)	0.11			(0.46		)	0.36
IN MILLIONS, except per share amounts
	2018
	First Quarter		Second Quarter			Third Quarter			Fourth Quarter			Total
Revenue	$	196.6	$	196.9		$	206.6		$	221.3		$	821.4
Operating income	27.7		27.0			20.2			14.8			89.7
Net income (loss)	43.5		105.9			(42.4		)	(105.8		)	1.2
Basic income (loss) per share	0.45		1.07			(0.43		)	(1.09		)	—
Diluted income (loss) per share	0.45		1.06			(0.43		)	(1.08		)	—

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Recently Issued Accounting Standards - Impact of Adoption of the Lease Standard (Details) - USD ($) $ in Millions	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Buildings and improvements, net of accumulated depreciation	$ 1,761.4		$ 1,677.5
Operating lease right-of-use assets, net of amortization	161.9
Finance lease liabilities			156.7
Operating lease liabilities, net of accretion	195.8		0.0
ASC 842
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets, net of amortization		$ 87.0
Operating lease liabilities, net of accretion		$ 123.2
BTS leases
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Buildings and improvements, net of accumulated depreciation			77.4
Finance lease liabilities			$ 123.3
BTS leases | ASC 842
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets, net of amortization	44.9
Operating lease liabilities, net of accretion	$ 77.9

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Fair Value of Financial Instruments and Hedging Activities - Effect of Derivative Financial Instruments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivative [Line Items]
Amount of gain (loss) recognized in OCI for derivatives	$ (0.7)	$ 0.0	$ 0.0
Amount of gain (loss) recognized in earnings	(7.5)
Cross-Currency Swaps
Derivative [Line Items]
Amount of gain (loss) recognized in OCI for derivatives	(0.7)	0.0
Amount of gain (loss) reclassified from accumulated OCI for derivatives	0.0	0.0
Amount of gain (loss) recognized in earnings	$ (7.5)	$ 0.0

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Other Assets (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deferred leasing and other contract costs	$ 53.2	$ 43.6
Prepaid expenses	22.1	26.4
Non-real estate assets, net	16.3	18.4
Derivative assets	3.5	0.0
Other assets	18.8	22.9
Total	$ 113.9	$ 111.3

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Equity Investments - Unrealized Gain (Loss) on Marketable Equity Investment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Net gain on marketable equity investment	$ 132.3	$ 9.9	$ 0.0
Less: Net gain recognized on marketable equity investment sold	66.7	0.0	0.0
Unrealized gain on marketable equity investment	$ 65.6	$ 9.9	$ 0.0

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Fair Value of Financial Instruments and Hedging Activities - Carrying and Fair Value (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Oct. 18, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	$ 2,886.6	$ 2,624.7
GDS Equity investment	135.1	198.1
GDS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
GDS Equity investment	$ 118.7		$ 100.0
Senior Notes | Old 2024 Notes - 5.000%
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Stated interest rate	5.00%
Senior Notes | Old 2027 Notes - 5.375%
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Stated interest rate	5.375%
Senior Notes | 2024 Notes - 2.900%
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Stated interest rate	2.90%
Senior Notes | 2029 Notes - 3.450%
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Stated interest rate	3.45%
Carrying Value | GDS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
GDS Equity investment	$ 118.7	185.5
Carrying Value | Senior Notes | Old 2024 Notes - 5.000%
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	0.0	705.5
Carrying Value | Senior Notes | Old 2027 Notes - 5.375%
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	0.0	509.1
Carrying Value | Senior Notes | 2024 Notes - 2.900%
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	599.2	0.0
Carrying Value | Senior Notes | 2029 Notes - 3.450%
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	598.2	0.0
Fair Value | GDS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
GDS Equity investment	118.7	185.5
Fair Value | Senior Notes | Old 2024 Notes - 5.000%
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	0.0	684.1
Fair Value | Senior Notes | Old 2027 Notes - 5.375%
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	0.0	488.0
Fair Value | Senior Notes | 2024 Notes - 2.900%
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	602.1	0.0
Fair Value | Senior Notes | 2029 Notes - 3.450%
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	$ 603.1	$ 0.0

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Recently Issued Accounting Standards

12 Months Ended

Dec. 31, 2019

Accounting Changes and Error Corrections [Abstract]

Recently Issued Accounting Standards

Recently Issued Accounting Standards

Recently Adopted Accounting Pronouncements

Leases

We adopted ASU 2016-02 (codified in ASC 842, Leases) on January 1, 2019, applied the package of practical expedients included therein and utilized the modified retrospective transition method with the cumulative effect of transition recorded as an adjustment to retained earnings on the effective date. By applying the modified retrospective transition method, the presentation of financial information for periods prior to January 1, 2019 was not restated.

We elected the package of practical expedients, which permits us to not reassess (1) whether any expired or existing contracts are or contain leases, (2) the lease classification for any expired or existing leases, and (3) the treatment of any initial direct costs for any existing leases as of the effective date. We did not elect the hindsight practical expedient, which permits entities to use hindsight in determining the lease term and assessing impairment.

As a Lessee

The ASU requires that a liability be recorded on the balance sheet for all leases where the reporting entity is a lessee, based on the present value of future lease obligations discounted based on the implicit rate or alternatively our incremental borrowing rate. The implicit rate is generally not determinable and, as a result, we use our incremental borrowing rate at the lease commencement date to determine the present value. We determine our incremental borrowing rate based on an estimate of our existing yield curve at the lease commencement. The rates are then adjusted for various factors to estimate the company’s secured rate, including the lease term and collateralization. The determination of our incremental borrowing rate requires judgment. A corresponding right-of-use ("ROU") asset will also be recorded. Amortization of the lease obligation and the ROU asset for leases classified as operating leases are on a straight-line basis. Leases classified as financing leases are required to be accounted for as financing arrangements similar to the accounting treatment for capital leases under ASC 840, Leases (the former accounting standard for all leases, ("ASC 840")).

We elected the practical expedient to combine our lease and related non-lease components by asset class for our leases.

We elected the practical expedient to not evaluate land easements not previously accounted for as leases prior to the entity’s adoption of the new accounting standard for leases.

We elected to apply the short-term lease measurement and recognition exemption available for leases under the new accounting standard for leases that have an original lease term of 12 months or less.

The adoption of ASC 842 had a significant impact on our Consolidated Balance Sheets due to the recognition of approximately $87.0 million of ROU assets and $123.2 million of lease liabilities for operating leases. We recognized a $9.5 million cumulative effect adjustment to retained earnings. The adjustment to retained earnings was driven principally by measurement of operating lease liabilities at the present value of the remaining lease payments at the adoption date of January 1, 2019. The increase was offset in part by impairment of ROU assets associated with one build-to-suit ("BTS") arrangement recognized as an operating lease under the new accounting standard for leases.

Additionally, we de-recognized certain previously recognized BTS lease assets and liabilities which under the new accounting standard for leases are recognized as operating lease ROU assets and lease liabilities. Prior to the adoption of the new accounting standard for leases, these leases were accounted as financing arrangements or BTS leases assets and liabilities and recorded as buildings and improvement and lease financing arrangements. The table below reflects the impact of adoption of the lease standard on our Consolidated Balance Sheets as of December 31, 2019 and 2018 (in millions) related to previously reported BTS leases:

Impact to the Consolidated Balance Sheets:	As of December 31, 2019		As of December 31, 2018
Buildings and improvements, net of accumulated depreciation	$	—	$	77.4
Operating lease right-of-use assets, net of amortization	44.9		—
Finance lease liabilities	—		123.3
Operating lease liabilities, net of accretion	77.9		—

Prior to the adoption of the new accounting standard for leases, BTS lease assets were amortized over the useful life of the asset and recorded as amortization expense and accretion of BTS lease liability was recorded as an interest expense in the Consolidated Statements of Operations. Upon adoption of the new accounting standard for leases, BTS leases are accounted as operating leases and amortization and accretion of lease liabilities of these operating leases are recorded as lease expenses in property operating expenses in our Consolidated Statements of Operations.

As a Lessor

The accounting for lessors remained largely unchanged from ASC 840. However, the new accounting standard for leases requires that lessors expense certain costs to obtain a lease that are not incremental to origination of a lease. Upon adoption, initial direct costs that are not incremental are expensed as general and administrative expense in our Consolidated Statements of Operations. Prior to the adoption of the new standard, these costs were capitalizable. As a result of electing the package of practical expedients, initial direct costs have not been reassessed prior to the effective date and therefore adoption of the lease standard did not have an impact on our previously reported Consolidated Statements of Operations with respect to initial direct costs.

In addition, under the new accounting standard for leases, certain exceptions under the previous standard for real estate no longer are applicable in the evaluation of the lease classification as an operating, sales type or direct financing lease. In the event that a real estate lease is classified as a sales-type lease, subject to certain conditions, a gain or loss is recognized based on the present value of the lease payments and residual value.

We elected the practical expedient to combine all of our lease and nonlease revenue components into a single combined lease component as nonlease components have the same pattern of transfer as the related predominant operating lease components. Our customer leases include options to extend or terminate the lease agreements. We do not generally include extension or termination options in a customer’s lease term for lease classification purposes or for recognizing lease revenue unless we are reasonably certain the customer will exercise these extension or termination options at lease commencement.

Share-based payments granted to nonemployees

On January 1, 2019, we adopted ASU 2018-07, Compensation-Stock Compensation (Topic 718) which simplifies the accounting for share-based payments granted to nonemployees for goods and services. Under this ASU, the guidance on such payments to nonemployees aligns with the requirements for share-based payments granted to employees. The adoption did not have a significant impact as to how the Company accounts for its share-based payments.

Equity investments

On January 1, 2018, we adopted ASU 2016-01 related to equity investments. Equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) are measured at fair value with changes in fair value recognized in net income. Prior to adoption of this update, changes in fair value for available for sale equity investments were recorded in other comprehensive income (loss). The adoption of the new standard was made through a cumulative-effect adjustment to beginning retained earnings of $75.6 million.

Changes in Shareholders' Equity

In August 2018, the SEC issued Securities Act Release No. 33-10532, Disclosure Update and Simplification, which amends certain of its disclosure requirements and is intended to facilitate the disclosure of information to investors and simplify compliance without significantly altering the total mix of information provided to investors. The amendments became effective on November 5, 2018. Among the amendments is the requirement to present the changes in shareholders’ equity in the interim financial statements (either in a separate statement or footnote) for interim periods on Form 10-Q. In accordance with the SEC's rule, the Company’s first presentation of changes in shareholders’ equity was shown in its Form 10-Q for the quarter ending March 31, 2019.

New Accounting Pronouncements Not Yet Adopted

In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes, which simplifies various aspects related to the accounting for income taxes, eliminates certain exceptions within ASC 740, Income Taxes, and clarifies certain aspects of the current guidance to promote consistency among reporting entities. The guidance is effective for periods beginning after December 15, 2020, with early adoption permitted. The Company is evaluating the impact of the new standard.

In August 2018, the FASB issued ASU 2018-15, Intangibles-Goodwill and Other-Internal-Use Software, which clarifies the accounting for implementation costs incurred in a hosting arrangement that is a service contract. Capitalization of these implementation costs are accounted for under the same guidance as implementation costs incurred to develop or obtain internal-use software and recorded as a prepaid asset. These capitalized costs are to be expensed ratably over the hosting arrangement term as operating expense, along with the service fees. The guidance is effective for periods beginning after December 15, 2019 and early adoption is allowed. The Company is evaluating the impact of the new standard but does not believe that adoption will have a significant impact on the Company.

In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement, which changes the fair value measurement disclosure requirements of ASC 820, Fair Value Measurement. The amendments are part of the FASB's disclosure framework project to improve the effectiveness of disclosures in the notes to the financial statements by facilitating clear communication of the information required by GAAP that is most important to financial statement users and are intended to improve the effectiveness of disclosures of fair value measurement by using those concepts. The guidance is effective for periods beginning after December 15, 2019 and early adoption is allowed. The Company is evaluating the impact of the new standard but does not believe that adoption will have a significant impact on the Company.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses, providing guidance which requires certain financial assets to be presented at the net amount expected to be collected. The FASB has subsequently issued various amendments to further clarify the scope of the initial guidance. ASU 2016-13 and its related amendments will apply to our rent receivables, notes receivable, net investments in leases and any other future financial assets that have the contractual right to receive cash that we may acquire in the future. FASB further clarified that receivables arising from operating leases are not within the scope of this sub-topic. The guidance is effective for periods beginning after December 15, 2019 and early adoption is allowed. The Company has evaluated the impact of the new standard and does not believe the adoption will have a significant impact on the Company because the Company has limited exposure to financial instruments subject to this standard.

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Investment in Real Estate

12 Months Ended

Dec. 31, 2019

Real Estate [Abstract]

Investment in Real Estate

Investment in Real Estate

A schedule of our gross investment in real estate follows:

IN MILLIONS
As of December 31,		2019						2018
	Acquisition Date	Land		Building and Improvements		Equipment		Land		Building and Improvements		Equipment
Austin II	2011	$	2.0	$	23.5	$	13.3	$	2.0	$	23.4	$	8.7
Austin III	2015	3.3		12.6		64.0		3.3		11.7		47.0
Chicago - Aurora I	2016	2.4		32.4		136.3		2.4		32.4		132.9
Chicago - Aurora II	2016	2.6		22.9		70.3		2.6		22.6		68.6
Chicago - Aurora Tower	2018	—		6.4		0.9		—		4.9		0.4
Chicago - Lombard	2008	0.7		4.7		8.1		0.7		4.7		8.1
Cincinnati - 7th Street(1)	1999	0.9		114.1		37.2		0.9		114.1		37.4
Cincinnati - Blue Ash(2)	2009	—		0.7		0.2		—		0.7		0.2
Cincinnati - Goldcoast	2007	—		—		—		0.2		4.0		0.1
Cincinnati - Hamilton(2)	2007	—		43.7		7.8		—		43.7		7.9
Cincinnati - Mason	2004	—		20.3		1.7		—		20.3		1.7
Cincinnati - North Cincinnati	2008	0.9		77.8		16.0		0.9		77.9		12.4
Dallas - Allen	2017	6.5		15.0		39.5		—		—		—
Dallas - Carrollton	2012	16.1		63.8		323.3		16.1		62.2		272.5
Dallas - Lewisville(2)	2010	—		58.1		41.1		—		76.8		39.6
Florence	2005	2.2		42.0		8.7		2.2		42.0		8.4
Frankfurt I	2018	4.0		36.0		123.7		4.1		35.7		124.9
Frankfurt II	2018	7.0		135.1		93.6		7.1		89.8		53.9
Houston - Galleria(3)	2010	—		71.0		24.4		—		71.0		20.2
Houston - Houston West I	2010	1.4		85.2		51.6		1.4		85.2		51.1
Houston - Houston West II	2013	2.7		22.8		52.0		2.7		22.9		50.9
Houston - Houston West III	2013	7.2		18.1		32.3		7.2		18.0		31.4
London - Great Bridgewater(4)	2011	—		—		1.3		—		26.8		1.2
London I(2)	2018	—		44.3		46.4		—		34.1		26.3
London II(2)	2018	—		42.8		93.3		—		25.2		74.8
Northern Virginia - Sterling I	2013	6.9		20.2		62.2		6.9		20.2		60.4
Northern Virginia - Sterling II	2013	—		28.8		112.4		—		28.8		112.4
Northern Virginia - Sterling III	2017	—		22.3		61.8		—		22.2		61.3
Northern Virginia - Sterling IV	2016	4.6		20.1		78.1		4.6		20.0		76.0
Northern Virginia - Sterling V	2016	14.5		81.7		303.7		14.5		80.8		295.8
Northern Virginia - Sterling VI	2018	9.7		60.2		196.9		—		—		77.5
Northern Virginia - Sterling VIII	2018	9.1		7.0		28.0		—		—		—
Norwalk I(4)	2015	—		1.7		10.6		—		13.6		10.1
Phoenix - Chandler I	2011	10.5		58.3		71.5		10.5		58.3		68.7
Phoenix - Chandler II	2014	—		16.2		39.8		—		16.2		39.4
Phoenix - Chandler III	2016	—		11.4		51.3		—		11.4		50.8
Phoenix - Chandler IV	2017	—		18.4		44.3		—		18.4		43.3
Phoenix - Chandler V	2017	—		12.1		54.6		—		10.7		53.4
Phoenix - Chandler VI	2016	2.4		23.3		101.7		2.4		23.3		100.3
Phoenix - Chandler VII	2016	4.2		0.8		0.4		—		—		—
Raleigh-Durham I	2017	2.1		79.8		80.0		2.1		79.8		75.4
San Antonio I	2011	4.6		31.7		36.3		4.6		31.7		35.3
San Antonio II	2013	7.0		30.3		61.0		7.0		30.3		60.8
San Antonio III	2017	—		40.2		99.5		—		40.2		99.0

IN MILLIONS
As of December 31,		2019						2018
		Land		Building and Improvements		Equipment		Land		Building and Improvements		Equipment
San Antonio IV	2017	$	—	$	56.3	$	50.6	$	—	$	42.1	$	48.2
Santa Clara II	2019	—		2.7		—		—		—		—
Singapore - Inter Business Park(4)	2011	—		—		—		—		—		—
Somerset I	2017	12.1		132.1		101.8		12.1		125.8		91.0
South Bend - Crescent(2)	2008	—		—		—		—		1.7		0.2
South Bend - Monroe	2007	—		1.9		0.3		—		2.5		0.4
Stamford - Omega(4)	2015	—		0.1		0.8		—		2.6		0.7
Stamford - Riverbend(4)	2015	—		0.9		8.6		—		2.9		7.8
Totowa - Commerce(4)	2015	—		0.4		1.7		—		4.1		1.7
Totowa - Madison(4)	2015	—		6.1		60.1		—		28.5		57.7
Wappingers Falls I(4)	2015	—		3.1		23.2		—		11.3		22.0
Total		$	147.6	$	1,761.4	$	3,028.2	$	118.5	$	1,677.5	$	2,630.2
Land held for future development		$	206.0	$	—	$	—	$	176.4	$	—	$	—

1) The information provided for the Cincinnati - 7th Street property includes data for two facilities, one of which we lease and one of which we own.

2) Indicates properties in which we hold a leasehold interest in the building shell and land. All data center infrastructure has been constructed by us and is owned by us.

3) Indicates properties in which we hold a leasehold interest in land. All data center infrastructure has been constructed by us and is owned by us.

4) Indicates properties in which we hold a leasehold interest in the building shell, land, and all data center infrastructure.

As of December 31, 2019 and 2018, construction in progress includes $61.8 million and $69.1 million of land which is under active development, respectively.

In addition, construction in progress was $946.3 million and $744.9 million as of December 31, 2019 and December 31, 2018, respectively, as we continue to build data center facilities.

For the year ended December 31, 2019, our capital expenditures were $876.4 million, as shown on the statement of cash flows. Substantially all of our investing activity related to our development and acquisition activities. Our capital expenditures for 2019 primarily related to the acquisition of land for future development and continued development in key markets, primarily in Amsterdam, Austin, Dallas, Frankfurt, London, Northern Virginia, Phoenix and Raleigh-Durham. Included in capital expenditures are land purchases of $54.7 million in Santa Clara, San Antonio, Dublin and Council Bluffs for future development.

For the year ended December 31, 2018, our capital expenditures were $1,328.5 million, as shown on the statement of cash flows. This included the purchase price of the properties acquired in the Zenium acquisition on August 24, 2018 for $462.8 million and $865.7 million for other developments primarily in Chicago, Cincinnati, Dallas, Northern Virginia, Phoenix and San Antonio; and the purchase of parcels of land in Phoenix, Northern Virginia, Allen, Amsterdam, Santa Clara and Frankfurt for future development.

For the year ended December 31, 2019, impairment charges of $0.7 million were recognized primarily due to an impairment on the South Bend - Monroe facility, which is being actively marketed for sale. No impairment charges were recognized during the year ended December 31, 2018.

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Schedule III. Real Estate Properties and Accumulated Depreciation

12 Months Ended

Dec. 31, 2019

SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract]

Schedule III. Real Estate Properties and Accumulated Depreciation

Schedule III. Real Estate Properties and Accumulated Depreciation

CyrusOne Inc.	As of December 31, 2019
(dollars in millions)	Initial Costs						Cost Capitalized Subsequent to Acquisition								Gross Carrying Amount
Description	Land		Building and Improvements		Equipment		Land		Building and Improvements			Equipment			Land		Building and Improvements		Equipment		Accumulated Depreciation		Acquisition
Austin II	$	2.0	$	—	$	—	$	—	$	23.5		$	13.3		$	2.0	$	23.5	$	13.3	$	19.7	2011
Austin III	3.3		—		—		—		12.6			64.0			3.3		12.6		64.0		16.7		2015
Chicago - Aurora I	2.4		26.0		97.3		—		6.4			39.0			2.4		32.4		136.3		57.2		2016
Chicago - Aurora II	2.6		—		—		—		22.9			70.3			2.6		22.9		70.3		14.6		2016
Chicago - Aurora Tower	—		—		—		—		6.4			0.9			—		6.4		0.9		0.5		2018
Chicago - Lombard	0.7		3.2		—		—		1.5			8.1			0.7		4.7		8.1		8.6		2008
Cincinnati - 7th Street	0.9		42.2		—		—		71.9			37.2			0.9		114.1		37.2		99.5		1999
Cincinnati - Blue Ash*	—		2.6		—		—		(1.9		)	0.2			—		0.7		0.2		0.6		2009
Cincinnati - Hamilton	—		9.5		—		—		34.2			7.8			—		43.7		7.8		33.6		2007
Cincinnati - Mason	—		—		—		—		20.3			1.7			—		20.3		1.7		15.8		2004
Cincinnati - North Cincinnati	0.9		12.3		—		—		65.5			16.0			0.9		77.8		16.0		47.7		2008
Dallas - Allen	6.5		—		—		—		15.0			39.5			6.5		15.0		39.5		2.9		2017
Dallas - Carrollton	16.1		—		—		—		63.8			323.3			16.1		63.8		323.3		133.6		2012
Dallas - Lewisville	—		46.2		2.2		—		11.9			38.9			—		58.1		41.1		69.4		2010
Florence	2.2		7.7		—		—		34.3			8.7			2.2		42.0		8.7		36.8		2005
Frankfurt I	4.0		31.0		109.7		—		5.0			13.9			4.0		36.0		123.7		13.7		2018
Frankfurt II	7.0		—		47.7		—		135.1			45.9			7.0		135.1		93.6		12.4		2018
Houston - Galleria	—		56.0		2.0		—		15.0			22.4			—		71.0		24.4		60.1		2010
Houston - Houston West I	1.4		21.4		0.1		—		63.8			51.5			1.4		85.2		51.6		90.6		2010
Houston - Houston West II	2.0		—		—		0.7		22.8			52.0			2.7		22.8		52.0		39.1		2013
Houston - Houston West III	7.1		—		—		0.1		18.1			32.3			7.2		18.1		32.3		13.6		2013
London - Great Bridgewater	—		16.5		—		—		(16.5		)	1.3			—		—		1.3		1.0		2011
London I	—		25.3		20.5		—		19.0			25.9			—		44.3		46.4		6.5		2018
London II	—		19.9		58.7		—		22.9			34.6			—		42.8		93.3		17.4		2018
Northern Virginia - Sterling I	6.9		—		—		—		20.2			62.2			6.9		20.2		62.2		31.1		2013
Northern Virginia - Sterling II	—		—		—		—		28.8			112.4			—		28.8		112.4		36.7		2013
Northern Virginia - Sterling III	—		—		—		—		22.3			61.8			—		22.3		61.8		18.8		2017
Northern Virginia - Sterling IV	4.6		9.6		0.1		—		10.5			78.0			4.6		20.1		78.1		20.5		2016
Northern Virginia - Sterling V	14.5		—		—		—		81.7			303.7			14.5		81.7		303.7		56.6		2016
Northern Virginia - Sterling VI	9.7		—		—		—		60.2			196.9			9.7		60.2		196.9		19.5		2018
Northern Virginia - Sterling VIII	9.1		—		—		—		7.0			28.0			9.1		7.0		28.0		2.0		2018
Norwalk I*	—		18.3		25.3		—		(16.6		)	(14.7		)	—		1.7		10.6		4.5		2015
Phoenix - Chandler I	10.5		—		—		—		58.3			71.5			10.5		58.3		71.5		53.5		2011
Phoenix - Chandler II	—		—		—		—		16.2			39.8			—		16.2		39.8		24.2		2014
Phoenix - Chandler III	—		0.9		2.5		—		10.5			48.8			—		11.4		51.3		16.7		2016
Phoenix - Chandler IV	—		—		—		—		18.4			44.3			—		18.4		44.3		11.6		2017
Phoenix - Chandler V	—		—		—		—		12.1			54.6			—		12.1		54.6		9.3		2017
Phoenix - Chandler VI	2.3		—		—		0.1		23.3			101.7			2.4		23.3		101.7		20.8		2016
Phoenix - Chandler VII	4.2		—		—		—		0.8			0.4			4.2		0.8		0.4		—		2016
Raleigh-Durham I	2.1		73.5		71.3		—		6.3			8.7			2.1		79.8		80.0		34.4		2017
San Antonio I	4.6		3.0		—		—		28.7			36.3			4.6		31.7		36.3		35.5		2011
San Antonio II	6.7		—		—		0.3		30.3			61.0			7.0		30.3		61.0		24.4		2013
San Antonio III	—		—		—		—		40.2			99.5			—		40.2		99.5		29.9		2017
San Antonio IV	—		—		—		—		56.3			50.6			—		56.3		50.6		13.6		2017
Santa Clara II	—		2.7		—		—		—			—			—		2.7		—		1.1		2019
Somerset I	12.1		124.6		83.3		—		7.5			18.5			12.1		132.1		101.8		43.2		2017
South Bend - Monroe	—		—		—		—		1.9			0.3			—		1.9		0.3		2.0		2007
Stamford - Omega*	—		3.2		0.6		—		(3.1		)	0.2			—		0.1		0.8		0.7		2015
Stamford - Riverbend*	—		4.3		13.2		—		(3.4		)	(4.6		)	—		0.9		8.6		6.9		2015

(dollars in millions)	Initial Costs						Cost Capitalized Subsequent to Acquisition							Gross Carrying Amount
Description	Land		Building and Improvements		Equipment		Land		Building and Improvements			Equipment		Land		Building and Improvements		Equipment		Accumulated Depreciation		Acquisition
Totowa - Commerce	$	—	$	4.1	$	0.8	$	—	$	(3.7	)	$	0.9	$	—	$	0.4	$	1.7	$	0.9	2015
Totowa - Madison	—		28.3		45.6		—		(22.2		)	14.5		—		6.1		60.1		33.0		2015
Wappingers Falls I	—		9.9		13.3		—		(6.8		)	9.9		—		3.1		23.2		16.2		2015
	$	146.4	$	602.2	$	594.2	$	1.2	$	1,159.2		$	2,433.9	$	147.6	$	1,761.4	$	3,028.2	$	1,379.2
Land held for future development	$	206.0	$	—	$	—	$	—	$	—		$	—	$	206.0	$	—	$	—	$	—

 

The aggregate cost of the total properties for federal income tax purposes was $7,088.2 million at December 31, 2019. In addition, Construction in progress was $946.3 million as we continue to build data center facilities.

* Reductions in Cost Capitalized Subsequent to Acquisition due to impairment losses recorded for the respective facility.

Historical Cost and Accumulated Depreciation and Amortization

The following table reconciles the historical cost and accumulated depreciation for the years ended December 31, 2019, 2018 and 2017.

	Years Ended December 31,
(amounts in millions)	2019			2018			2017
Property
Balance—beginning of period	$	5,347.5		$	3,840.8		$	2,601.6
Disposals	(15.8		)	(20.8		)	(3.4		)
Impairments	(0.7		)	—			(71.8		)
Impact of adoption of ASU 2016-02	(97.8		)	—			—
Additions (acquisitions and improvements)	856.3			1,527.5			1,314.4
Balance, end of period(1)	$	6,089.5		$	5,347.5		$	3,840.8
Accumulated Depreciation
Balance—beginning of period	$	1,054.5		$	782.4		$	578.5
Disposals	(14.0		)	(14.0		)	(1.9		)
Impairments	—			—			(14.1		)
Impact of adoption of ASU 2016-02	(19.3		)	—			—
Additions (depreciation and amortization expense)	358.0			286.1			219.9
Balance, end of period	$	1,379.2		$	1,054.5		$	782.4

(1) - Includes construction-in-progress of $946.3 million, $744.9 million and $487.1 million for the years ended December 31, 2019, 2018 and 2017, respectively that is not included in amounts reflected above in Schedule III.

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Guarantors

12 Months Ended

Dec. 31, 2019

Condensed Financial Information Disclosure [Abstract]

Guarantors

Guarantors

The 2024 Notes and the 2029 Notes issued by CyrusOne LP (the “LP Co-Issuer”) and CyrusOne Finance Corp. (the “Finance Co-Issuer” and, together with the LP Co-Issuer, the “Co-Issuers”) are fully and unconditionally and jointly and severally guaranteed on a senior unsecured basis by CyrusOne Inc. (the “Parent Guarantor”).

The indentures governing the 2024 Notes and 2029 Notes contain affirmative and negative covenants customarily found in indebtedness of this type, including covenants that restrict, subject to certain exceptions, the Company’s ability to incur secured or unsecured indebtedness. The Company and its subsidiaries are also required to maintain total unencumbered assets of at least 150% of their unsecured debt on a consolidated basis, subject to certain qualifications set forth in the indentures. The covenants contained in the indentures do not restrict the Company’s ability to pay dividends or distributions to stockholders.

The Old 2024 Notes and the Old 2027 Notes issued by the LP Co-Issuer and the Finance Co-Issuer were fully and unconditionally and jointly and severally guaranteed on a senior unsecured basis.

The indentures governing the Old 2024 Notes and Old 2027 Notes contained affirmative and negative covenants customarily found in indebtedness of this type, including covenants that restricted, subject to certain exceptions, the Company’s ability to: incur secured or unsecured indebtedness; pay dividends or distributions on its equity interests, or redeem or repurchase equity interests of the Company; make certain investments or other restricted payments; enter into transactions with affiliates; enter into agreements limiting the ability of the Operating Partnership’s subsidiaries to pay dividends or make certain transfers and other payments to the Operating Partnership or to other subsidiaries; sell assets; and merge, consolidate or transfer all or substantially all of the operating partnership’s assets. The Company and its subsidiaries were also required to maintain total unencumbered assets of at least 150% of their unsecured debt on a consolidated basis, subject to certain qualifications set forth in the indenture.

Notwithstanding the foregoing, the covenants contained in the indentures did not restrict the Company’s ability to pay dividends or distributions to stockholders to the extent (i) no default or event of default existed or was continuing under the indentures and (ii) the Company believed in good faith that it qualified as a REIT under the Code and the payment of such dividend or distribution was necessary either to maintain its status as a REIT or to enable it to avoid payment of any tax that could be avoided by reason of such dividend or distribution. Subject to the provisions of the indentures governing the Old 2024 Notes and Old 2027 Notes, in certain circumstances, a Guarantor could have been released from its guarantee obligation, including:

• upon the sale or other disposition (including by way of consolidation or merger) of such Guarantor or of all of the capital stock of such Guarantor such that such Guarantor was no longer a restricted subsidiary under the indentures,

• upon the sale or disposition of all or substantially all of the assets of the Guarantor,

• upon the LP Co-issuer designating such Guarantor as an unrestricted subsidiary under the terms of the indentures,

• if such Guarantor was no longer a guarantor or other obligor of any other indebtedness of the LP Co-issuer or the Parent Guarantor,

• upon the LP Co-issuer designating such Guarantor as an excluded subsidiary under the terms of the indentures,

• upon the defeasance or discharge of the Old 2024 Notes or Old 2027 Notes, as applicable, in accordance with the terms of the indentures, and

• upon the Old 2024 Notes or Old 2027 Notes, as applicable, being rated investment grade by at least two rating agencies and no default or event of default having occurred and continuing.

The term “Guarantor Subsidiaries” refers collectively to the Subsidiary Guarantors and the General Partner, who were guarantors of the Old 2024 Notes and Old 2027 Notes prior to May 9, 2019. The term “Non-Guarantors” refers collectively to the Company’s foreign subsidiaries and certain domestic subsidiaries, which are not, and were not, prior to May 9, 2019, guarantors of the Old 2024 Notes or Old 2027 Notes. On and after May 9, 2019, the term “Non-Guarantor Subsidiaries” refers collectively to the Subsidiary Guarantors and the Non-Guarantors.

The Parent Guarantor is a REIT whose only material asset is its ownership of operating partnership units of the LP Co-Issuer. The LP Co-Issuer and its subsidiaries hold substantially all the assets of the Company. The LP Co-Issuer conducts the operations of the business, along with its subsidiaries. The Finance Co-Issuer does not have any operations or revenues.

The following schedules present the consolidating balance sheets as of December 31, 2019, and the consolidating statements of operations, comprehensive income (loss) and cash flows for the years ended December 31, 2019, 2018 and 2017 for the Parent Guarantor, General Partner, each Co-Issuer and Non-Guarantor Subsidiaries. Prior to the release of the Subsidiary Guarantors on May 9, 2019, the following schedules present the consolidating balance sheets as of December 31, 2018, the consolidating statements of operations and comprehensive income (loss), and the statements of cash flows for the years ended December 31, 2018 and 2017 for the Parent Guarantor, General Partner, each Co-Issuer, Guarantor Subsidiaries, and Non-Guarantors. Eliminations and consolidation adjustments primarily relate to the elimination of investments in subsidiaries and equity earnings (loss) related to investments in subsidiaries (in millions).

Consolidating Balance Sheets

IN MILLIONS	As of December 31, 2019
	Parent Guarantor		General Partner		LP Co-issuer		Finance Co-issuer		Non-Guarantor Subsidiaries		Eliminations/Consolidations			Total
Total investment in real estate, net	$	—	$	—	$	—	$	—	$	4,640.4	$	69.9		$	4,710.3
Cash and cash equivalents	—		—		0.6		—		75.8		—			76.4
Investment in subsidiaries	2,402.2		16.8		3,569.0		—		—		(5,988.0		)	—
Rent and other receivables, net	—		—		—		—		291.9		—			291.9
Restricted cash	—		—		—		—		1.3		—			1.3
Operating lease right-of-use assets, net	—		—		—		—		161.9		—			161.9
Intercompany receivable	21.1		—		1,753.3		—		38.8		(1,813.2		)	—
Equity investments	—		—		—		—		135.1		—			135.1
Goodwill	—		—		—		—		455.1		—			455.1
Intangible assets, net	—		—		—		—		196.1		—			196.1
Other assets	—		—		3.5		—		110.4		—			113.9
Total assets	$	2,423.3	$	16.8	$	5,326.4	$	—	$	6,106.8	$	(7,731.3	)	$	6,142.0
Debt	$	—	$	—	$	2,886.6	$	—	$	—	$	—		$	2,886.6
Intercompany payable	—		—		21.1		—		1,792.1		(1,813.2		)	—
Finance lease liabilities	—		—		—		—		31.8		—			31.8
Operating lease liabilities	—		—		—		—		195.8		—			195.8
Construction costs payable	—		—		—		—		176.3		—			176.3
Accounts payable and accrued expenses	—		—		5.1		—		117.6		—			122.7
Dividends payable	58.6		—		—		—		—		—			58.6
Deferred revenue and prepaid rents	—		—		—		—		163.7		—			163.7
Deferred tax liability	—		—		—		—		60.5		—			60.5
Other liabilities	—		—		11.4		—		—		—			11.4
Total liabilities	58.6		—		2,924.2		—		2,537.8		(1,813.2		)	3,707.4
Total stockholders' equity	2,364.7		16.8		2,402.2		—		3,569.0		(5,918.1		)	2,434.6
Total liabilities and equity	$	2,423.3	$	16.8	$	5,326.4	$	—	$	6,106.8	$	(7,731.3	)	$	6,142.0

IN MILLIONS	As of December 31, 2018
	Parent Guarantor		General Partner		LP Co-issuer		Finance Co-issuer		Guarantor Subsidiaries		Non- Guarantors		Eliminations/Consolidations			Total
Total investment in real estate, net	$	—	$	—	$	—	$	—	$	3,611.2	$	644.9	$	36.9		$	4,293.0
Cash and cash equivalents	—		—		—		—		27.2		37.2		—			64.4
Investment in subsidiaries	2,216.9		22.2		3,122.5		—		—		—		(5,361.6		)	—
Rent and other receivables, net	—		—		—		—		218.7		16.2		—			234.9
Intercompany receivable	23.2		—		1,761.5		—		6.8		—		(1,791.5		)	—
Equity investments	—		—		—		—		—		198.1		—			198.1
Goodwill	—		—		—		—		455.1		—		—			455.1
Intangible assets, net	—		—		—		—		178.1		57.6		—			235.7
Other assets	—		—		0.5		—		94.4		16.4		—			111.3
Total assets	$	2,240.1	$	22.2	$	4,884.5	$	—	$	4,591.5	$	970.4	$	(7,116.2	)	$	5,592.5
Debt	$	—	$	—	$	2,624.7	$	—	$	—	$	—	$	—		$	2,624.7
Intercompany payable	—		—		23.2		—		1,761.5		6.8		(1,791.5		)	—
Finance lease liabilities	—		—		—		—		104.0		52.7		—			156.7
Construction costs payable	—		—		—		—		175.6		19.7		—			195.3
Accounts payable and accrued expenses	—		—		19.7		—		95.9		5.7		—			121.3
Dividends payable	51.0		—		—		—		—		—		—			51.0
Deferred revenue and prepaid rents	—		—		—		—		144.9		3.7		—			148.6
Deferred tax liability	—		—		—		—		—		68.9		—			68.9
Total liabilities	51.0		—		2,667.6		—		2,281.9		157.5		(1,791.5		)	3,366.5
Total stockholders' equity	2,189.1		22.2		2,216.9		—		2,309.6		812.9		(5,324.7		)	2,226.0
Total liabilities and equity	$	2,240.1	$	22.2	$	4,884.5	$	—	$	4,591.5	$	970.4	$	(7,116.2	)	$	5,592.5

Consolidating Statements of Operations and Comprehensive Income (Loss)

IN MILLIONS	Year Ended December 31, 2019
	Parent Guarantor		General Partner		LP Co-issuer			Finance Co-issuer		Non-Guarantor Subsidiaries			Eliminations/Consolidations			Total
Revenue	$	—	$	—	$	—		$	—	$	981.3		$	—		$	981.3
Total operating expenses	—		—		—			—		914.3			—			914.3
Operating income	—		—		—			—		67.0			—			67.0
Interest (expense) income, net	—		—		(114.5		)	—		(0.4		)	32.9			(82.0		)
Gain on marketable equity investment	—		—		—			—		132.3			—			132.3
Loss on early extinguishment of debt	—		—		(71.8		)	—		—			—			(71.8		)
Foreign currency and derivative losses, net	—		—		(7.5		)	—		—			—			(7.5		)
Other expense	—		—		—			—		(0.3		)	—			(0.3		)
(Loss) income before income taxes	—		—		(193.8		)	—		198.6			32.9			37.7
Income tax benefit	—		—		—			—		3.7			—			3.7
Equity earnings (loss) related to investment in subsidiaries	19.6		0.1		214.1			—		—			(233.8		)	—
Net income (loss)	19.6		0.1		20.3			—		202.3			(200.9		)	41.4
Other comprehensive income	—		—		(0.7		)	—		11.8			—			11.1
Comprehensive income (loss)	$	19.6	$	0.1	$	19.6		$	—	$	214.1		$	(200.9	)	$	52.5

IN MILLIONS	Year Ended December 31, 2018
	Parent Guarantor			General Partner			LP Co-issuer			Finance Co-issuer		Guarantor Subsidiaries			Non- Guarantors			Eliminations/Consolidations			Total
Revenue	$	—		$	—		$	—		$	—	$	799.7		$	21.7		$	—		$	821.4
Total operating expenses	—			—			—			—		700.2			31.5			—			731.7
Operating income (loss)	—			—			—			—		99.5			(9.8		)	—			89.7
Interest (expense) benefit, net	—			—			(110.6		)	—		—			(3.3		)	19.2			(94.7		)
Gain on marketable equity investment	—			—			—			—		—			9.9			—			9.9
Loss on early extinguishment of debt	—			—			(3.1		)	—		—			—			—			(3.1		)
(Loss) income before income taxes	—			—			(113.7		)	—		99.5			(3.2		)	19.2			1.8
Income tax (expense) benefit	—			—			—			—		(3.0		)	2.4			—			(0.6		)
Equity (loss) earnings related to investment in subsidiaries	(28.9		)	(0.3		)	84.8			—		—			—			(55.6		)	—
Net (loss) income	(28.9		)	(0.3		)	(28.9		)	—		96.5			(0.8		)	(36.4		)	1.2
Other comprehensive loss	—			—			—			—		—			(10.9		)	—			(10.9		)
Comprehensive (loss) income	$	(28.9	)	$	(0.3	)	$	(28.9	)	$	—	$	96.5		$	(11.7	)	$	(36.4	)	$	(9.7	)

IN MILLIONS	Year Ended December 31, 2017
	Parent Guarantor			General Partner			LP Co-issuer			Finance Co-issuer		Guarantor Subsidiaries			Non- Guarantors			Eliminations/Consolidations			Total
Revenue	$	—		$	—		$	—		$	—	$	666.4		$	5.6		$	—		$	672.0
Total operating expenses	—			—			—			—		640.4			7.5			—			647.9
Operating income (loss)	—			—			—			—		26.0			(1.9		)	—			24.1
Interest (expense) benefit, net	—			—			(76.2		)	—		—			(2.6		)	10.7			(68.1		)
Loss on early extinguishment of debt	—			—			(36.5		)	—		—			—			—			(36.5		)
(Loss) income before income taxes	—			—			(112.7		)	—		26.0			(4.5		)	10.7			(80.5		)
Income tax expense	—			—			—			—		(3.0		)	—			—			(3.0		)
Equity (loss) earnings related to investment in subsidiaries	(18.7		)	(0.2		)	94.0			—		(4.6		)	—			(70.5		)	—
Net (loss) income	(18.7		)	(0.2		)	(18.7		)	—		18.4			(4.5		)	(59.8		)	(83.5		)
Other comprehensive income	—			—			—			—		—			75.5			—			75.5
Comprehensive (loss) income	$	(18.7	)	$	(0.2	)	$	(18.7	)	$	—	$	18.4		$	71.0		$	(59.8	)	$	(8.0	)

Consolidating Statements of Cash Flows

IN MILLIONS	Year Ended December 31, 2019
	Parent Guarantor			General Partner			LP Co-issuer			Finance Co-issuer		Non-Guarantor Subsidiaries			Eliminations/Consolidations			Total
Net cash (used in) provided by operating activities	$	—		$	—		$	(124.9	)	$	—	$	457.7		$	32.9		$	365.7
Cash flows from investing activities:
Investment in real estate	—			—			—			—		(843.5		)	(32.9		)	(876.4		)
Investment in subsidiaries	(357.2		)	(2.5		)	(210.4		)	—		—			570.1			—
Equity investments	—			—			—			—		(3.8		)	—			(3.8		)
Proceeds from sale of equity investments	—			—			—			—		199.0			—			199.0
Proceeds from the sale of real estate assets	—			—			—			—		1.3			—			1.3
Return of investment	210.4			—			—			—		—			(210.4		)	—
Intercompany borrowings	9.3			—			8.2			—		32.0			(49.5		)	—
Net cash (used in) provided by investing activities	(137.5		)	(2.5		)	(202.2		)	—		(615.0		)	277.3			(679.9		)
Cash flows from financing activities:
Issuance of common stock, net	357.2			—			—			—		—			—			357.2
Dividends paid	(210.4		)	—			(210.4		)	—		—			210.4			(210.4		)
Intercompany borrowings	—			—			(9.3		)	—		(40.2		)	49.5			—
Proceeds from revolving credit facility	—			—			656.7			—		—			—			656.7
Repayments of revolving credit facility	—			—			(182.5		)	—		—			—			(182.5		)
Repayments of unsecured term loan	—			—			(200.0		)	—		—			—			(200.0		)
Proceeds from senior notes	—			—			1,197.4			—		—			—			1,197.4
Repayments of senior notes	—			—			(1,200.0		)	—		—			—			(1,200.0		)
Payment of debt extinguishment costs	—			—			(72.0		)	—		—			—			(72.0		)
Payment of deferred financing costs	—			—			(9.4		)	—		—			—			(9.4		)
Payments on finance lease liabilities	—			—			—			—		(2.9		)	—			(2.9		)
Tax payment upon exercise of equity awards	(9.3		)	—			—			—		—			—			(9.3		)
Contributions/distributions from parent	—			2.5			357.2			—		210.4			(570.1		)	—
Net cash provided by (used in) financing activities	137.5			2.5			327.7			—		167.3			(310.2		)	324.8
Effect of exchange rate changes on cash, cash equivalents and restricted cash	—			—			—			—		2.7			—			2.7
Net increase (decrease) in cash, cash equivalents and restricted cash	—			—			0.6			—		12.7			—			13.3
Cash, cash equivalents and restricted cash at beginning of period	—			—			—			—		64.4			—			64.4
Cash, cash equivalents and restricted cash at end of period	$	—		$	—		$	0.6		$	—	$	77.1		$	—		$	77.7

IN MILLIONS	Year Ended December 31, 2018
	Parent Guarantor			General Partner			LP Co-issuer			Finance Co-issuer		Guarantor Subsidiaries			Non- Guarantors			Eliminations/Consolidations			Total
Net cash (used in) provided by operating activities	$	—		$	—		$	(103.6	)	$	—	$	421.6		$	(27.9	)	$	19.2		$	309.3
Cash flows from investing activities:
Asset acquisitions, primarily real estate, net of cash acquired	—			—			—			—		—			(462.8		)	—			(462.8		)
Investment in real estate	—			—			—			—		(814.6		)	(31.9		)	(19.2		)	(865.7		)
Equity investments	—			—			—			—		—			(12.6		)	—			(12.6		)
Investment in subsidiaries	(700.0		)	(7.0		)	(829.5		)	—		—			—			1,536.5			—
Return of investment	181.1			—			—			—		—			—			(181.1		)	—
Intercompany borrowings	5.6			—			(105.1		)	—		(6.8		)	—			106.3			—
Net cash (used in) provided by investing activities	(513.3		)	(7.0		)	(934.6		)	—		(821.4		)	(507.3		)	1,442.5			(1,341.1		)
Cash flows from financing activities:
Issuance of common stock, net	699.6			—			—			—		—			—			—			699.6
Dividends paid	(181.1		)	—			(181.1		)	—		—			—			181.1			(181.1		)
Intercompany borrowings	—			—			(5.6		)	—		105.1			6.8			(106.3		)	—
Proceeds from revolving credit facility	—			—			658.4			—		—			29.9			—			688.3
Repayments of revolving credit facility	—			—			(532.7		)	—		—			(114.7		)	—			(647.4		)
Proceeds from unsecured term loan	—			—			1,300.0			—		—			—			—			1,300.0
Repayments of unsecured term loan	—			—			(900.0		)	—		—			—			—			(900.0		)
Payments on finance lease liabilities	—			—			—			—		(7.9		)	(1.6		)	—			(9.5		)
Tax payment upon exercise of equity awards	(5.2		)	—			—			—		—			—			—			(5.2		)
Contributions/distributions from parent	—			7.0			700.0			—		178.6			650.9			(1,536.5		)	—
Net cash provided by (used in) financing activities	513.3			7.0			1,039.0			—		275.8			571.3			(1,461.7		)	944.7
Effect of exchange rate changes on cash, cash equivalents and restricted cash	—			—			(0.8		)	—		—			0.4			—			(0.4		)
Net increase (decrease) in cash, cash equivalents and restricted cash	—			—			—			—		(124.0		)	36.5			—			(87.5		)
Cash, cash equivalents and restricted cash at beginning of period	—			—			—			—		151.2			0.7			—			151.9
Cash, cash equivalents and restricted cash at end of period	$	—		$	—		$	—		$	—	$	27.2		$	37.2		$	—		$	64.4

IN MILLIONS	Year Ended December 31, 2017
	Parent Guarantor			General Partner			LP Co-issuer			Finance Co-issuer		Guarantor Subsidiaries			Non- Guarantors			Eliminations/Consolidations			Total
Net cash (used in) provided by operating activities	$	—		$	—		$	(60.3	)	$	—	$	339.7		$	(0.6	)	$	10.7		$	289.5
Cash flows from investing activities:
Asset acquisitions, primarily real estate, net of cash acquired	—			—			—			—		(492.3		)	—			—			(492.3		)
Investment in real estate	—			—			—			—		(903.8		)	—			(10.7		)	(914.5		)
Equity investments	—			—			—			—		—			(100.0		)	—			(100.0		)
Investment in subsidiaries	(705.3		)	(7.1		)	(705.3		)	—		(0.7		)	—			1,418.4			—
Return of investment	145.7			—			—			—		—			—			(145.7		)	—
Intercompany borrowings	6.5			—			(598.8		)	—		—			0.5			591.8			—
Net cash (used in) provided by investing activities	(553.1		)	(7.1		)	(1,304.1		)	—		(1,396.8		)	(99.5		)	1,853.8			(1,506.8		)
Cash flows from financing activities:
Issuance of common stock, net	705.7			—			—			—		—			—			—			705.7
Dividends paid	(145.7		)	—			(145.7		)	—		—			—			145.7			(145.7		)
Intercompany borrowings	—			—			(6.5		)	—		598.2			—			(591.7		)	—
Proceeds from revolving credit facility	—			—			1,037.3			—		—			—			—			1,037.3
Repayments of revolving credit facility	—			—			(1,275.0		)	—		—			—			—			(1,275.0		)
Proceeds from unsecured term loan	—			—			350.0			—		—			—			—			350.0
Proceeds from senior notes	—			—			1,217.8			—		—			—			—			1,217.8
Repayments of senior notes	—			—			(474.8		)	—		—			—			—			(474.8		)
Payment of debt extinguishment costs	—			—			(30.0		)	—		—			—			—			(30.0		)
Payment of deferred financing costs	—			—			(16.7		)	—		—			—			—			(16.7		)
Payments on finance lease liabilities	—			—			—			—		(8.6		)	(1.2		)	—			(9.8		)
Interest paid by lenders on issuance of the senior notes	—			—			2.7			—		—			—			—			2.7
Tax payment upon exercise of equity awards	(6.9		)	—			—			—		—			—			—			(6.9		)
Contributions/distributions from parent	—			7.1			705.3			—		605.3			100.8			(1,418.5		)	—
Net cash provided by (used in) financing activities	553.1			7.1			1,364.4			—		1,194.9			99.6			(1,864.5		)	1,354.6
Net increase (decrease) in cash, cash equivalents and restricted cash	—			—			—			—		137.8			(0.5		)	—			137.3
Cash, cash equivalents and restricted cash at beginning of period	—			—			—			—		13.4			1.2			—			14.6
Cash, cash equivalents and restricted cash at end of period	$	—		$	—		$	—		$	—	$	151.2		$	0.7		$	—		$	151.9

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Leases - As a Lessee (Tables)

12 Months Ended

Dec. 31, 2019

Leases [Abstract]

Lease, Cost

The components of lease expense are as follows (in millions):

	Year Ended December 31, 2019
Operating lease cost	$	20.3
Finance lease cost:
Amortization of assets	2.3
Interest on lease liabilities	1.7
Total net lease cost	$	24.3

Supplemental cash flow and other information related to leases is as follows (in millions):

	Year Ended December 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	22.1
Operating cash flows from finance leases	1.7
Financing cash flows from finance leases	2.9
Non-cash right-of-use assets obtained in exchange for lease liabilities:
Operating leases	$	175.1
Finance leases	0.8

Assets And Liabilities, Lessee

Supplemental balance sheet information related to leases is as follows (in millions, except lease term and discount rate):

	December 31, 2019
Operating leases:
Operating lease right-of-use assets	$	161.9
Operating lease liabilities	$	195.8
Finance leases:
Property and equipment, at cost	$	34.9
Accumulated amortization	(5.0		)
Property and equipment, net	$	29.9
Finance lease liabilities	$	31.8
Weighted average remaining lease term (in years):
Operating leases	15.8
Finance leases(a)	18.1
Weighted average discount rate:
Operating leases	3.9		%
Finance leases(a)	4.9		%

(a) Excludes the 999-year ground lease in Dublin, the Republic of Ireland.

Lessee, Operating Lease, Liability, Maturity

Maturities of lease liabilities were as follows (in millions):

	As of December 31, 2019
	Operating Leases			Finance Leases
2020	$	22.4		$	5.0
2021	21.0			4.1
2022	22.4			2.9
2023	18.5			1.9
2024	13.9			1.4
Thereafter	165.4			31.1
Total lease payments	$	263.6		$	46.4
Less: Imputed interest	(67.8		)	(14.6		)
Total lease obligations	$	195.8		$	31.8

Finance Lease, Liability, Maturity

Maturities of lease liabilities were as follows (in millions):

	As of December 31, 2019
	Operating Leases			Finance Leases
2020	$	22.4		$	5.0
2021	21.0			4.1
2022	22.4			2.9
2023	18.5			1.9
2024	13.9			1.4
Thereafter	165.4			31.1
Total lease payments	$	263.6		$	46.4
Less: Imputed interest	(67.8		)	(14.6		)
Total lease obligations	$	195.8		$	31.8

Schedule of Future Minimum Rental Payments for Operating Leases

The following table summarizes aggregate minimum principal payments of the finance lease obligations and future minimum lease payments required under operating leases for the five years subsequent to December 31, 2018, and thereafter (in millions):

	Operating Leases		Capital Leases		Lease Financing Arrangements
2019	$	5.0	$	2.7	$	15.0
2020	4.9		2.8		27.6
2021	3.7		2.9		11.4
2022	3.7		2.0		11.6
2023	3.5		1.0		10.0
Thereafter	43.4		22.0		89.1
Total lease payments	$	64.2	$	33.4	$	164.7

Schedule of Future Minimum Lease Payments for Finance Leases

The following table summarizes aggregate minimum principal payments of the finance lease obligations and future minimum lease payments required under operating leases for the five years subsequent to December 31, 2018, and thereafter (in millions):

	Operating Leases		Capital Leases		Lease Financing Arrangements
2019	$	5.0	$	2.7	$	15.0
2020	4.9		2.8		27.6
2021	3.7		2.9		11.4
2022	3.7		2.0		11.6
2023	3.5		1.0		10.0
Thereafter	43.4		22.0		89.1
Total lease payments	$	64.2	$	33.4	$	164.7

XML

Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Cash Flows [Abstract]
Capitalized interest	$ 32.9	$ 24.4	$ 17.0

XML

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (52.1)	$ 12.6	$ (8.5)	$ 89.4	$ (105.8)	$ (42.4)	$ 105.9	$ 43.5	$ 41.4	$ 1.2	$ (83.5)
Other comprehensive income (loss):
Foreign currency translation adjustment									11.8	(10.9)	(0.1)
Net loss on cash flow hedging instruments									(0.7)	0.0	0.0
Unrealized gain on equity investment									0.0	0.0	75.6
Comprehensive income (loss)									$ 52.5	$ (9.7)	$ (8.0)

XML

Cover Page - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2019	Feb. 14, 2020	Jun. 30, 2019
Cover page.
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2019
Document Transition Report	false
Entity File Number	001-35789
Entity Registrant Name	CyrusOne Inc.
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	46-0691837
Entity Address, Address Line One	2850 N. Harwood Street
Entity Address, Address Line Two	Suite 2200
Entity Address, City or Town	Dallas
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75201
City Area Code	972
Local Phone Number	350-0060
Title of 12(b) Security	Common Stock, $.01 par value
Trading Symbol	CONE
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 6.5
Entity Common Stock, Shares Outstanding		114,848,445
Entity Central Index Key	0001553023
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Amendment Flag	false

XML

Commitments and Contingencies

12 Months Ended

Dec. 31, 2019

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Operating Leases

We lease certain data center facilities and equipment from third parties. Certain of these leases provide for renewal options with fixed rent escalations beyond the initial lease term.

Standby Letters of Credit

As of December 31, 2019, CyrusOne Inc. had outstanding letters of credit of $8.2 million as security for obligations under the terms of its lessee agreements.

Performance Guarantees

Customer contracts generally require specified levels of performance related to uninterrupted service and cooling temperatures. If these performance standards are not met, we could be obligated to issue billing credits to the customer. Management assesses the probability that a performance standard will not be achieved. As of December 31, 2019 and 2018, no accruals for performance guarantees were required.

Purchase Commitments

The Company has entered into non-cancellable contracted commitments for construction of data center facilities and acquisition of equipment. As of December 31, 2019, these commitments were approximately $217.4 million and are expected to be incurred over the next one to two years. In addition, the Company has entered into equipment and electricity power contracts, which require minimum purchase commitments for power. These agreements range from one to two years and provide for payments for early

termination or require minimum payments for the remaining term. As of December 31, 2019, the minimum commitments for these arrangements were approximately $89.9 million.

The Company has entered into an Agreement to Lease contract that requires the Company to enter into a lease upon shell completion of building in London, UK totaling 70,000 square feet with annual rent totaling £1.4 million for initial lease terms of 20 years. We expect construction of the shell building to be completed in 2020.

Indemnifications

During the normal course of business, the Company and its subsidiaries have made certain indemnities and commitments to customers, vendors and associated parties related to the use, protection and security of intellectual property and claims for negligence or willful misconduct. Further, customer contracts generally require specified levels of performance related to uninterrupted service and cooling temperatures. Also, in the normal course of our business, the Company is involved in legal, tax and regulatory proceedings arising from the conduct of its business activities. Management assesses the probability that these performance standards, credits, claims or indemnities have been incurred and liabilities or asset reserves are established for loss contingencies when the losses associated are deemed to be probable and the loss can be reasonably estimated. Based on information currently available, the Company believes that the outcome of such matters will not, individually or in the aggregate, have a material effect on its consolidated financial statements.

Contingencies

CyrusOne is involved in legal, tax and regulatory proceedings arising from the conduct of its business activities. Liabilities are established for loss contingencies when losses associated with such claims are deemed to be probable, and the loss can be reasonably estimated. Based on information currently available and consultation with legal counsel, we believe that the outcome of all claims will not, individually or in the aggregate, have a material effect on our financial statements.

XML

Debt

12 Months Ended

Dec. 31, 2019

Debt Disclosure [Abstract]

Debt

Debt

As of December 31, 2019 and 2018, the components of debt are as follows (unless otherwise noted, interest rate and maturity date information are as of December 31, 2019) (in millions):

	December 31, 2019			December 31, 2018			Interest Rate(a)		Maturity Date
$3.0 Billion Credit Facility:
$1.7 Billion Revolving Credit Facility:									March 2022(b)
US Revolver(a)	$	555.0		$	—		Monthly LIBOR + 1.20%
EUR Revolver	33.6			143.0			Monthly EURIBOR + 1.20%
GBP Revolver(a)	26.4			—			Monthly LIBOR + 1.20%
2023 Term Loan	800.0			1,000.0			Monthly LIBOR + 1.35%		March 2023
2025 Term Loan	300.0			300.0			Monthly LIBOR + 1.65%		March 2025
Old 2024 Notes, including bond premium of $5.5 million	—			705.5			5.000	%	March 2024
Old 2027 Notes, including bond premium of $9.1 million	—			509.1			5.375	%	March 2027
2024 Notes, including bond discount of $0.8 million	599.2			—			2.900	%	November 2024
2029 Notes, including bond discount of $1.8 million	598.2			—			3.450	%	November 2029
Deferred financing costs	(25.8		)	(32.9		)	—		—
Total	$	2,886.6		$	2,624.7

(a) - Monthly USD LIBOR and GBP LIBOR as of December 31, 2019 was 1.80% and 0.71%, respectively.

(b) - The Company has an option to exercise a one-year extension option, subject to certain conditions.

Credit facilities

On March 29, 2018, the Company entered into a new $3.0 billion unsecured credit facility. The new credit facility consists of a $1.7 billion revolving credit facility ("$1.7 Billion Revolving Credit Facility"), which includes a $750.0 million multicurrency borrowing sublimit, a 5-year term loan with commitments totaling $1.0 billion ("2023 Term Loan") and a $300.0 million 7-year term loan ("2025 Term Loan") (collectively, the "$3.0 Billion Credit Facility"). We borrowed $700.0 million under the 2023 Term Loan on March 31, 2018, and the 2023 Term Loan includes a delayed draw feature which allows the Company to draw $300.0 million in up to three tranches over a six-month period in multiple currencies. The Company exercised the draw as a part of the acquisition of Zenium. The $1.7 Billion Revolving Credit Facility has the option to borrow in non-USD currencies and includes a one-year option which, if exercised by the Company, would extend the final maturity to March 2023. The $3.0 Billion Credit Facility also includes an accordion feature providing for an aggregate increase in the revolving and term loan components to $3.8 billion, subject to certain conditions. The $1.7 Billion Revolving Credit Facility, 2023 Term Loan and 2025 Term Loan are prepayable at our option. In April 2019, the Company used the proceeds from the sale of GDS shares to pay down $200.0 million of the 2023 Term Loan.

On March 29, 2018, borrowings of $1.0 billion under the $3.0 Billion Credit Facility were used to fully retire a previous $2.0 billion credit facility. The previous $2.0 billion credit facility consisted of a $1.1 billion senior unsecured revolving credit facility ("$1.1 Billion Revolving Credit Facility"), a $250.0 million 5-year term loan and a $650.0 million 7-year term loan ("2022 Term Loan") (collectively, the "$2.0 Billion Credit Facility"). The aggregate outstanding principal balance of the $2.0 Billion Credit Facility at the date of the prepayment was $900.0 million and we recognized a loss on early extinguishment of debt of $3.1 million.

In August 2018, the Company financed the acquisition of Zenium with proceeds from its $300.0 million delayed draw term loan

included in the 2023 Term Loan and $174.5 million of borrowings under the $1.7 Billion Revolving Credit Facility. In connection with the acquisition, the Company assumed a six-year, €100.0 million construction facility, which was paid off in December 2018.

Prior to obtaining an investment grade rating in September 2019 and shifting to a ratings-based pricing grid under the $1.7 Billion Revolving Credit Facility, we paid commitment fees for the unused amount of borrowings on the $1.7 Billion Revolving Credit Facility and fees on any outstanding letters of credit equal to 0.25% per annum of the actual daily amount by which the aggregate revolving commitments exceed the sum of outstanding revolving loans and letter of credit obligations. Following the shift to a

ratings-based pricing grid, we pay a facility fee calculated based on the aggregate revolving commitments. The facility fee rate varies based on ratings-based pricing levels, and is currently equal to 0.25% per annum of the aggregate revolving commitments. We also paid commitment fees on the $1.1 Billion Revolving Credit Facility through its retirement in March 2018. The facility fee or commitment fee, as applicable, was $2.6 million, $3.8 million and $1.9 million for the years ended December 31, 2019, 2018 and 2017, respectively.

As of December 31, 2019, we had $800.0 million, $300.0 million and $615.0 million outstanding under the 2023 Term Loan, the 2025 Term Loan and the $1.7 Billion Revolving Credit Facility, respectively, and additional borrowing capacity under the $3.0 Billion Credit Facility was approximately $1.1 billion ($1.1 billion under the $1.7 Billion Revolving Credit Facility and zero under the 2023 Term Loan), net of $8.2 million of outstanding letters of credit.

Senior notes

On December 5, 2019, the Operating Partnership and CyrusOne Finance Corp., a single-purpose finance subsidiary, both wholly-owned subsidiaries of the Company (together, the "Issuers") completed a public offering of $600.0 million aggregate principal amount of 2.900% senior notes due 2024 (the "2024 Notes") and $600.0 million aggregate principal amount of 3.450% senior notes due 2029 (the “2029 Notes”). The Company received proceeds of $1,197.4 million, net of underwriting costs and other deferred financing costs. The Company used the proceeds to finance the repurchase of all of its Old 2024 Notes and all of its Old 2027 Notes (each as defined below and together, the "Existing Notes"), including the payment of consent payments, for the redemption and discharge of Existing Notes that remained outstanding after the completion of the tender offers and consent solicitations, for the payment of related premiums, fees, discounts and expenses and for general corporate purposes. In connection with the repurchase of the Existing Notes, the Company recognized a loss on early extinguishment of debt of $71.8 million.

The 2024 Notes and 2029 Notes are senior unsecured obligations of the Issuers guaranteed by CyrusOne Inc., which rank equally in right of payment with all existing and future unsecured senior indebtedness of the Issuers. The 2024 Notes and 2029 Notes are effectively subordinated in right of payment to any secured indebtedness of the Issuers to the extent of the value of the assets securing such indebtedness. The 2024 Notes and 2029 Notes may be redeemed at our option prior to their scheduled maturity dates at the prices and premiums and on the terms set forth in the respective indentures governing the notes.

In September 2019, CyrusOne LP received an investment grade rating and the guarantees of the $3.0 Billion Credit Facility by CyrusOne LP’s existing domestic subsidiaries (“Subsidiary Guarantors”) were released. In connection therewith, the guarantees of the Old 2024 Notes and the Old 2027 Notes by such guarantors were also released.

On March 17, 2017, the Operating Partnership and CyrusOne Finance Corp., completed an offering of $500.0 million aggregate principal amount of 5.000% senior notes due 2024 ("Original Old 2024 Notes") and $300.0 million aggregate principal amount of 5.375% senior notes due 2027 ("Original Old 2027 Notes") in a private offering. The Company received proceeds of $791.2 million, net of underwriting costs and other deferred financing costs.

On November 3, 2017, the Issuers completed an offering of $200.0 million aggregate principal amount of 5.000% senior notes due 2024 ("Additional Old 2024 Notes") and $200.0 million aggregate principal amount of 5.375% senior notes due 2027 ("Additional Old 2027 Notes") in a private offering. The Additional Old 2024 Notes have terms substantially identical to the Original Old 2024 Notes and the Additional Old 2027 Notes have terms substantially identical to the Original Old 2027 Notes. The Original Old 2024 Notes and the Additional Old 2024 Notes form a single class of securities ("Old 2024 Notes"), and the Original Old 2027 Notes and the Additional Old 2027 Notes form a single class of securities ("Old 2027 Notes"). The Company received proceeds of $416.1 million, net of underwriting costs of $4.4 million. The Original Old 2024 Notes and the Additional Old 2024 Notes are referred to as the Old 2024 Notes and the Original Old 2027 Notes and the Additional Old 2027 Notes are referred to as the Old 2027 Notes. On January 8, 2018, the Issuers completed an exchange offer with respect to the Old 2024 Notes and the Old 2027 Notes and all validly tendered Old 2024 Notes and Old 2027 Notes were exchanged for notes registered with the SEC. In December 2019, all of the Old 2024 Notes and Old 2027 Notes were repurchased as described above.

On November 20, 2012, wholly-owned subsidiaries of the Company issued $525.0 million of 6.375% senior notes due 2022 (the "6.375% Notes"). In March 2017, the Company repurchased all of the 6.375% Notes with an aggregate face value of $474.8 million, a net carrying value of $469.0 million, for total consideration of $515.1 million, including accrued and unpaid interest of $10.3 million. In connection with the debt prepayment, we recognized a loss on early extinguishment of debt of $36.5 million.

Financial debt covenants

Our debt agreements contain customary provisions with respect to events of default, affirmative and negative covenants and borrowing conditions. The most restrictive covenants are generally included in the $3.0 Billion Credit Agreement. The $3.0 Billion Credit Agreement requires us to maintain certain financial covenants including the following, in each case on a consolidated basis,

a minimum fixed charge ratio, maximum total and secured leverage ratios, maximum net operating income to debt service ratio and a maximum ratio of unsecured indebtedness to unencumbered asset value. In order to continue to have access to amounts available under the $3.0 Billion Credit Agreement, the Company must remain in compliance with all of that agreement's covenants. As of December 31, 2019, we believe we are in compliance with all provisions of our debt agreements.

Debt Maturities

The following table summarizes aggregate maturities of the $3.0 Billion Credit Facility and 2024 Notes and 2029 Notes for the five years subsequent to December 31, 2019, and thereafter: 

IN MILLIONS	$3.0 Billion Credit Facility(a)		2024 Notes and 2029 Notes		Total
2020	$	—	$	—	$	—
2021	—		—		—
2022	615.0		—		615.0
2023	800.0		—		800.0
2024	—		600.0		600.0
Thereafter	300.0		600.0		900.0
Total debt	$	1,715.0	$	1,200.0	$	2,915.0

(a) - The Company has an option to exercise a one-year extension option on the $1.7 Billion Revolving Credit Facility, subject to certain conditions, which would extend the final maturity to March 2023.

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Stock-Based Compensation

12 Months Ended

Dec. 31, 2019

Share-based Payment Arrangement [Abstract]

Stock-Based Compensation

Stock-Based Compensation

The board of directors of CyrusOne Inc. adopted the 2012 Long-Term Incentive Plan ("LTIP"), prior to the IPO, which was amended and restated on May 2, 2016 and February 18, 2019. The LTIP is administered by the compensation committee of the board of directors. Awards issuable under the LTIP include common stock, restricted stock, restricted stock units, stock options and other incentive awards. CyrusOne Inc. has reserved a total of 8.9 million shares of CyrusOne Inc. common stock for issuance pursuant to the LTIP, which may be adjusted for changes in capitalization and certain corporate transactions. To the extent that an award, if forfeitable, expires, terminates or lapses, or an award is otherwise settled in cash without the delivery of shares of common stock to the participant, then any unpaid shares subject to the award will be available for future grant or issuance under the LTIP. The payment of dividend equivalents in cash in conjunction with any outstanding awards will not be counted against the shares available for issuance under the LTIP. The related stock compensation expense incurred by CyrusOne Inc. is allocated to the operating partnership. Shares available under the LTIP at December 31, 2019, were approximately 4.6 million. Shares vest according to each agreement and as long as the employee remains employed with the Company. The Company has granted awards with time-based vesting, performance-based vesting and market-based vesting features. The performance-based vesting metrics granted have varied and are described in each of the grant years below.

The market-based metric is total stockholder return (TSR) compared to the MSCI US REIT Index (REIT Index) as defined in the award agreements. The market-based restricted stock/units vest annually based upon the achievement of certain criteria for each of the three-year measurement periods. In each of the first two years vesting is limited to 100% of the target. If at the end of the third year total performance over the three-year period exceeds the REIT Index by 2% or more, up to 200% of these awards may vest. The market-based awards will vest based on the below scales. The scales are linear between each point and awards are interpolated between the points.

- If CyrusOne's TSR is less than the return of the REIT Index equals 0%

- If CyrusOne's TSR is equal to or greater than the return of the REIT Index equals 100%; up to 200% if CyrusOne's TSR exceeds the return of the REIT Index by 2%

- If CyrusOne's TSR exceeds the return of the REIT Index, but is negative, any calculated vesting amount will be reduced by 50%

The Company uses the Black-Scholes option-pricing model for time and performance-based options and a Monte Carlo simulation for market-based awards. The fair values of these awards use assumptions such as volatility, risk-free interest rate, and expected term of the awards.

The holders of restricted stock have all the rights and privileges of shareholders including the right to vote. The holders of restricted stock units do not have all of the rights and privileges of shareholders and do not have the right to vote. These rights will be acquired upon the settlement of the restricted stock units and the issuance of shares. The time-based restricted stock units have the right to receive dividends that are payable within ten days following the date the dividends are payable to shareholders. Market-based restricted stock units accrue dividends which are paid upon the vesting and settlement of the units.

Compensation expense is measured based on the estimated grant-date fair value. Expense for time-based grants is recognized under a straight-line method. For market-based grants, expense is recognized under a graded expense attribution method. For performance-based grants, expense is recognized under a graded expense attribution method if it is probable that the performance targets will be achieved. Any dividends declared with respect to the performance and market-based shares shall be accrued by the Company and distributed on the vesting date provided that the applicable performance goal has been attained.

Stock-based compensation expense was as follows:

For the periods ended December 31,	2019		2018		2017
2014 Grants	$	—	$	—	$	0.1
2015 Grants	—		0.4		1.8
2016 Grants	1.1		5.7		6.6
2017 Grants	3.1		4.6		6.2
2018 Grants	5.4		6.8		—
2019 Grants and ESPP expense	7.1		—		—
Total	$	16.7	$	17.5	$	14.7

2014 Grants

On February 7, 2014, the Company issued performance and market-based awards under the LTIP in the form of restricted stock. For these awards, vesting was tied 50% to the achievement of a non-GAAP financial measure related to the Company's performance (cumulative Adjusted EBITDA targets, as defined in the agreement) over the 2014-2016 performance period, and 50% to a market-based performance measure. The portion of the awards tied to cumulative Adjusted EBITDA vested annually over a three-year period based on the Company attaining predetermined cumulative Adjusted EBITDA targets and as long as the employee remained employed with the Company.

The cumulative EBITDA targets are based on the below scales. The scales are linear between each point and awards are interpolated between the points.

- Below 90% of performance target equals 0%

- At 90% of performance target equals 50%

- At 100% of performance target equals 100%

- At or above 115% of performance target equals up to 200%

In addition, during the year ended December 31, 2014, the Company also granted from time-to-time a total of 46,313 additional time-based restricted shares which had an aggregate value of $1.0 million on the grant date. These shares cliff vested either one year after the grant date or three years after the grant date.

Total awards granted in 2014 had a grant date fair value of $12.9 million. As of December 31, 2019, there was no unearned compensation related to the awards granted in 2014 as all such awards are fully vested.

2015 Grants

On February 10, 2015, the Company issued awards under the LTIP in the form of options and restricted stock. The stock options are time-based and vest annually on a pro-rata basis over three years. Twenty percent of the restricted stock awards are subject to time-based vesting and eighty percent of the restricted stock awards are equally split between performance-based and market-based vesting. The performance-based metric is return on assets, which is a non-GAAP financial measure that is defined in the award agreement. The time-based restricted stock will vest pro-rata annually over three years. The performance and market-based restricted stock will vest annually based upon the achievement of certain criteria for each year of the three-year measurement periods. The first two years are capped at 100% of the target with a cumulative true-up to a maximum of 200% possible in year three.

The performance-based awards will vest based on the same scales as the awards granted during 2014.

In addition, during the year ended December 31, 2015, the Company also granted from time to time a total of 50,300 shares of time-based restricted stock and 67,012 shares of performance-based restricted stock for various new employee hires with vesting schedules ranging from annual to cliff vesting in three years.

Total awards granted in 2015 had a grant date fair value of $13.8 million. As of December 31, 2019, there was no unearned compensation related to the awards granted in 2015 as all such awards are fully vested.

2016 Grants

On February 1, 2016, the Company issued 641,097 shares of time, performance and market-based awards under the LTIP in the form of restricted stock. The grant date fair value of time and performance-based restricted shares was $36.99. The grant date fair value of market-based restricted shares was $43.66. The Company issued stock options on February 1, 2016. The stock option awards have a contractual life of 10 years from the award date and were granted with an exercise price equal to $36.99. The Company issued 222,461 options with a grant date fair value of $6.99.

The performance-based metric is return on assets, which is a non-GAAP financial measure and is defined in the award agreement. The time-based restricted stock awards generally vest pro-rata annually over a three-year period. The performance and market-based restricted stock awards vest annually based upon the achievement of certain criteria for each of the three-year measurement periods. The first two years are capped at 100% of the target with a cumulative true-up to a maximum of 200% possible in year three. Certain employees were also awarded time-based restricted stock that cliff vest at the end of three years. The stock options are time-based and vest annually on a pro-rata basis over three years.

The performance-based awards will vest based on the same scales as the awards granted during 2014.

In addition, during the year ended December 31, 2016, for various new employee hires, the following grants were made:

• 5,894 shares of time-based restricted stock which cliff vest in three years from the date of each grant.

• 47,667 shares of time-based restricted stock which vest annually on a pro rata basis over a three-year period from the date of each grant.

Total awards granted in 2016 had a grant date fair value of $22.6 million. As of December 31, 2019, there was no unearned compensation related to the awards granted in 2016 as all such awards are fully vested.

2017 Grants

On February 13, 2017, the Company issued time and market-based awards under the LTIP in the form of restricted stock units and restricted stock. The Company granted 119,218 time-based restricted stock units that generally vest annually on a pro-rata basis over a three-year period and 18,179 shares of time-based restricted stock that generally vest over a one-year period with a grant date fair value of $48.13, and 129,146 market-based restricted stock units, at target, with a grant date fair value of $63.23.

In addition, during the year ended December 31, 2017 the Company granted from time to time a total of 20,852 time-based restricted stock units that vest annually on a pro rata basis over a three-year period.

Total awards granted in 2017 had a grant date fair value of $15.9 million. As of December 31, 2019, unearned compensation representing the unvested portion of the awards granted in 2017 totaled $0.5 million, with a weighted average vesting period of 0.1 years.

2018 Grants

On February 26, 2018, the Company issued time and market-based awards under the LTIP in the form of restricted stock units and restricted stock. The Company granted 161,797 time-based restricted stock units that generally vest annually on a pro-rata basis over a three-year period and 17,052 shares of time-based restricted stock that generally vest over a one-year period with a grant date fair value of $51.31, and 160,266 market-based restricted stock units, at target, with a grant date fair value of $52.53.

In addition, during the year ended December 31, 2018 the Company granted from time to time a total of 40,249 time-based restricted stock units that vest annually on a pro rata basis over a three-year period.

Total awards granted in 2018 had a grant date fair value of $20.2 million. As of December 31, 2019, unearned compensation representing the unvested portion of the awards granted in 2018 totaled $5.7 million, with a weighted average vesting period of 0.8 years.

2019 Grants

On February 21, 2019, the Company issued time and market-based awards under the LTIP in the form of restricted stock units and restricted stock. The Company granted 175,073 time-based restricted stock units that generally vest annually on a pro-rata basis over a three-year period and 16,681 shares of time-based restricted stock that generally vest over a one-year period with a grant date fair value of $52.46, and 184,145 market-based restricted stock units, at target, with a grant date fair value of $43.67.

In addition, during the year ended December 31, 2019, the Company granted from time to time a total of 42,052 time-based restricted stock units that vest annually on a pro rata basis over a three-year period.

Total awards granted in 2019 had a grant date fair value of $20.5 million. As of December 31, 2019, unearned compensation representing the unvested portion of the awards granted in 2019 totaled $11.9 million, with a weighted average vesting period of 1.6 years.

Restricted Stock Units, Restricted Stock and Stock Option Activity

The following tables summarize the unvested restricted stock units, restricted stock and stock options activity and the weighted average fair value of these shares at the date of grant for the year ended December 31, 2019:

Restricted Stock Units ("RSU")

	2019
	Restricted Stock Units		Weighted Average Grant Date Fair Value
Outstanding January 1,	511,409		$	56.23
Granted	401,270		48.90
Vested	(187,176	)	43.37
Forfeited	(78,884	)	52.99
Outstanding December 31,	646,619		$	55.80

Restricted Stock ("RS")

	2019
	Restricted Stock		Weighted Average Grant Date Fair Value
Outstanding January 1,	419,356		$	35.73
Granted	16,681		52.46
Vested	(384,753	)	35.61
Forfeited	(34,603	)	37.09
Outstanding December 31,	16,681		$	52.46

Stock Options

	2019
	Options		Weighted Average Exercise Price
Outstanding January 1,	401,223		$	31.96
Granted	—		—
Exercised	(25,586	)	36.70
Forfeited or expired	(551	)	23.58
Outstanding December 31,	375,086		31.64
Exercisable at December 31,	375,086		31.64
Vested and expected to vest	375,086		$	31.64

The aggregate intrinsic value of options outstanding and options exercisable is based on the Company's closing stock price on the last trading day of the fiscal year for in-the-money options. The aggregate intrinsic value represents the cumulative difference between the fair market value of the underlying common stock and the option exercise prices. The total intrinsic value of options exercised during 2019 was $0.4 million, 2018 was $0.6 million and 2017 was $0.5 million.

The aggregate intrinsic value of both options outstanding and options exercisable at December 31, 2019 was $13.1 million.

Stock Option Assumptions

The following table summarizes the stock option assumptions for the years ended December 31, 2019, 2018 and 2017:

	Options Outstanding		Options Exercisable		Assumption Range
Exercise Prices	Number of Shares	Weighted Average Remaining Contractual Terms (Years)	Number of Shares	Weighted Average Remaining Contractual Terms (Years)	Risk-Free Interest Rate	Expected Annual Dividend Yield	Expected Terms in Years	Expected Volatility
2017
$23.58	67,322	5.3	67,322	5.3	0.92%	3.4%	6.0	35%
$28.42	143,358	7.1	95,572	7.1	1.6% - 1.75%	4.4%	5.5-6.5	32.5% - 37.5%
$30.74	12,719	7.6	8,479	7.6	1.6% - 1.75%	4.4%	5.5-6.5	32.5% - 37.5%
$36.99	192,060	8.1	64,022	8.1	1.47% - 1.64%	4.1%	5.5-6.5	27.5% - 35.0%
2018
$23.58	53,086	4.3	53,086	4.3	0.92%	3.4%	6.0	35%
$28.42	143,358	6.1	143,358	6.1	1.6% - 1.75%	4.4%	5.5-6.5	32.5% - 37.5%
$30.74	12,719	6.6	12,719	6.6	1.6% - 1.75%	4.4%	5.5-6.5	32.5% - 37.5%
$36.99	192,060	6.8	130,425	6.7	1.47% - 1.64%	4.1%	5.5-6.5	27.5% - 35.0%
2019
$23.58	51,985	3.3	51,985	3.3	0.92%	3.4%	6.0	35%
$28.42	143,358	5.1	143,358	5.1	1.6% - 1.75%	4.4%	5.5-6.5	32.5% - 37.5%
$30.74	12,719	5.6	12,719	5.6	1.6% - 1.75%	4.4%	5.5-6.5	32.5% - 37.5%
$36.99	167,024	6.1	167,024	6.1	1.47% - 1.64%	4.1%	5.5-6.5	27.5% - 35.0%

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Guarantors - Narrative (Details)	12 Months Ended
	Dec. 31, 2019
Condensed Financial Information Disclosure [Abstract]
Minimum unencumbered asset value percentage of unsecured debt (as a percent)	150.00%

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Debt (Tables)

12 Months Ended

Dec. 31, 2019

Debt Disclosure [Abstract]

Schedule of Long-term debt Instruments

As of December 31, 2019 and 2018, the components of debt are as follows (unless otherwise noted, interest rate and maturity date information are as of December 31, 2019) (in millions):

	December 31, 2019			December 31, 2018			Interest Rate(a)		Maturity Date
$3.0 Billion Credit Facility:
$1.7 Billion Revolving Credit Facility:									March 2022(b)
US Revolver(a)	$	555.0		$	—		Monthly LIBOR + 1.20%
EUR Revolver	33.6			143.0			Monthly EURIBOR + 1.20%
GBP Revolver(a)	26.4			—			Monthly LIBOR + 1.20%
2023 Term Loan	800.0			1,000.0			Monthly LIBOR + 1.35%		March 2023
2025 Term Loan	300.0			300.0			Monthly LIBOR + 1.65%		March 2025
Old 2024 Notes, including bond premium of $5.5 million	—			705.5			5.000	%	March 2024
Old 2027 Notes, including bond premium of $9.1 million	—			509.1			5.375	%	March 2027
2024 Notes, including bond discount of $0.8 million	599.2			—			2.900	%	November 2024
2029 Notes, including bond discount of $1.8 million	598.2			—			3.450	%	November 2029
Deferred financing costs	(25.8		)	(32.9		)	—		—
Total	$	2,886.6		$	2,624.7

(a) - Monthly USD LIBOR and GBP LIBOR as of December 31, 2019 was 1.80% and 0.71%, respectively.

(b) - The Company has an option to exercise a one-year extension option, subject to certain conditions.

Schedule of Maturities of Long-term Debt

The following table summarizes aggregate maturities of the $3.0 Billion Credit Facility and 2024 Notes and 2029 Notes for the five years subsequent to December 31, 2019, and thereafter: 

IN MILLIONS	$3.0 Billion Credit Facility(a)		2024 Notes and 2029 Notes		Total
2020	$	—	$	—	$	—
2021	—		—		—
2022	615.0		—		615.0
2023	800.0		—		800.0
2024	—		600.0		600.0
Thereafter	300.0		600.0		900.0
Total debt	$	1,715.0	$	1,200.0	$	2,915.0

(a) - The Company has an option to exercise a one-year extension option on the $1.7 Billion Revolving Credit Facility, subject to certain conditions, which would extend the final maturity to March 2023.

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Investment in Real Estate (Tables)

12 Months Ended

Dec. 31, 2019

Real Estate [Abstract]

Schedule of Gross Investment in Real Estate

As of December 31, 2019 and 2018, major components of our real estate investments and intangibles and related accumulated depreciation and amortization are as follows (in millions):

	December 31, 2019															December 31, 2018
	Investment in Real Estate						Intangibles									Investment in Real Estate						Intangibles
	Buildings and Improvements			Equipment			Customer Relationships			In-Place Leases			Other Contractual			Buildings and Improvements			Equipment			Customer Relationships			In-Place Leases			Other Contractual
Cost	$	1,761.4		$	3,028.2		$	247.1		$	137.1		$	19.4		$	1,677.5		$	2,630.2		$	247.1		$	136.0		$	19.5
Less: accumulated depreciation and amortization	(545.1		)	(834.1		)	(151.1		)	(46.7		)	(9.7		)	(481.8		)	(572.7		)	(137.9		)	(21.1		)	(7.9		)
Net	$	1,216.3		$	2,194.1		$	96.0		$	90.4		$	9.7		$	1,195.7		$	2,057.5		$	109.2		$	114.9		$	11.6

A schedule of our gross investment in real estate follows:

IN MILLIONS
As of December 31,		2019						2018
	Acquisition Date	Land		Building and Improvements		Equipment		Land		Building and Improvements		Equipment
Austin II	2011	$	2.0	$	23.5	$	13.3	$	2.0	$	23.4	$	8.7
Austin III	2015	3.3		12.6		64.0		3.3		11.7		47.0
Chicago - Aurora I	2016	2.4		32.4		136.3		2.4		32.4		132.9
Chicago - Aurora II	2016	2.6		22.9		70.3		2.6		22.6		68.6
Chicago - Aurora Tower	2018	—		6.4		0.9		—		4.9		0.4
Chicago - Lombard	2008	0.7		4.7		8.1		0.7		4.7		8.1
Cincinnati - 7th Street(1)	1999	0.9		114.1		37.2		0.9		114.1		37.4
Cincinnati - Blue Ash(2)	2009	—		0.7		0.2		—		0.7		0.2
Cincinnati - Goldcoast	2007	—		—		—		0.2		4.0		0.1
Cincinnati - Hamilton(2)	2007	—		43.7		7.8		—		43.7		7.9
Cincinnati - Mason	2004	—		20.3		1.7		—		20.3		1.7
Cincinnati - North Cincinnati	2008	0.9		77.8		16.0		0.9		77.9		12.4
Dallas - Allen	2017	6.5		15.0		39.5		—		—		—
Dallas - Carrollton	2012	16.1		63.8		323.3		16.1		62.2		272.5
Dallas - Lewisville(2)	2010	—		58.1		41.1		—		76.8		39.6
Florence	2005	2.2		42.0		8.7		2.2		42.0		8.4
Frankfurt I	2018	4.0		36.0		123.7		4.1		35.7		124.9
Frankfurt II	2018	7.0		135.1		93.6		7.1		89.8		53.9
Houston - Galleria(3)	2010	—		71.0		24.4		—		71.0		20.2
Houston - Houston West I	2010	1.4		85.2		51.6		1.4		85.2		51.1
Houston - Houston West II	2013	2.7		22.8		52.0		2.7		22.9		50.9
Houston - Houston West III	2013	7.2		18.1		32.3		7.2		18.0		31.4
London - Great Bridgewater(4)	2011	—		—		1.3		—		26.8		1.2
London I(2)	2018	—		44.3		46.4		—		34.1		26.3
London II(2)	2018	—		42.8		93.3		—		25.2		74.8
Northern Virginia - Sterling I	2013	6.9		20.2		62.2		6.9		20.2		60.4
Northern Virginia - Sterling II	2013	—		28.8		112.4		—		28.8		112.4
Northern Virginia - Sterling III	2017	—		22.3		61.8		—		22.2		61.3
Northern Virginia - Sterling IV	2016	4.6		20.1		78.1		4.6		20.0		76.0
Northern Virginia - Sterling V	2016	14.5		81.7		303.7		14.5		80.8		295.8
Northern Virginia - Sterling VI	2018	9.7		60.2		196.9		—		—		77.5
Northern Virginia - Sterling VIII	2018	9.1		7.0		28.0		—		—		—
Norwalk I(4)	2015	—		1.7		10.6		—		13.6		10.1
Phoenix - Chandler I	2011	10.5		58.3		71.5		10.5		58.3		68.7
Phoenix - Chandler II	2014	—		16.2		39.8		—		16.2		39.4
Phoenix - Chandler III	2016	—		11.4		51.3		—		11.4		50.8
Phoenix - Chandler IV	2017	—		18.4		44.3		—		18.4		43.3
Phoenix - Chandler V	2017	—		12.1		54.6		—		10.7		53.4
Phoenix - Chandler VI	2016	2.4		23.3		101.7		2.4		23.3		100.3
Phoenix - Chandler VII	2016	4.2		0.8		0.4		—		—		—
Raleigh-Durham I	2017	2.1		79.8		80.0		2.1		79.8		75.4
San Antonio I	2011	4.6		31.7		36.3		4.6		31.7		35.3
San Antonio II	2013	7.0		30.3		61.0		7.0		30.3		60.8
San Antonio III	2017	—		40.2		99.5		—		40.2		99.0

IN MILLIONS
As of December 31,		2019						2018
		Land		Building and Improvements		Equipment		Land		Building and Improvements		Equipment
San Antonio IV	2017	$	—	$	56.3	$	50.6	$	—	$	42.1	$	48.2
Santa Clara II	2019	—		2.7		—		—		—		—
Singapore - Inter Business Park(4)	2011	—		—		—		—		—		—
Somerset I	2017	12.1		132.1		101.8		12.1		125.8		91.0
South Bend - Crescent(2)	2008	—		—		—		—		1.7		0.2
South Bend - Monroe	2007	—		1.9		0.3		—		2.5		0.4
Stamford - Omega(4)	2015	—		0.1		0.8		—		2.6		0.7
Stamford - Riverbend(4)	2015	—		0.9		8.6		—		2.9		7.8
Totowa - Commerce(4)	2015	—		0.4		1.7		—		4.1		1.7
Totowa - Madison(4)	2015	—		6.1		60.1		—		28.5		57.7
Wappingers Falls I(4)	2015	—		3.1		23.2		—		11.3		22.0
Total		$	147.6	$	1,761.4	$	3,028.2	$	118.5	$	1,677.5	$	2,630.2
Land held for future development		$	206.0	$	—	$	—	$	176.4	$	—	$	—

1) The information provided for the Cincinnati - 7th Street property includes data for two facilities, one of which we lease and one of which we own.

2) Indicates properties in which we hold a leasehold interest in the building shell and land. All data center infrastructure has been constructed by us and is owned by us.

3) Indicates properties in which we hold a leasehold interest in land. All data center infrastructure has been constructed by us and is owned by us.

4) Indicates properties in which we hold a leasehold interest in the building shell, land, and all data center infrastructure.

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Quarterly Financial Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Revenue	$ 253.9	$ 250.9	$ 251.5	$ 225.0	$ 221.3	$ 206.6	$ 196.9	$ 196.6	$ 981.3	$ 821.4	$ 672.0
Operating income	22.3	13.2	19.7	11.8	14.8	20.2	27.0	27.7	67.0	89.7	24.1
Net income (loss)	$ (52.1)	$ 12.6	$ (8.5)	$ 89.4	$ (105.8)	$ (42.4)	$ 105.9	$ 43.5	$ 41.4	$ 1.2	$ (83.5)
Basic income (loss) per share (in dollars per share)	$ (0.46)	$ 0.11	$ (0.08)	$ 0.82	$ (1.09)	$ (0.43)	$ 1.07	$ 0.45	$ 0.36	$ 0	$ (0.95)
Diluted income (loss) per share (in dollars per share)	$ (0.46)	$ 0.11	$ (0.08)	$ 0.82	$ (1.08)	$ (0.43)	$ 1.06	$ 0.45	$ 0.36	$ 0	$ (0.95)

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Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2019

Equity [Abstract]

Schedule of Declared Cash Dividends and Distributions

We have declared cash dividends on common shares and distributions on operating partnership units for the years ended December 31, 2019 and 2018 as presented in the table below:

Record date	Payment date	Cash dividend per share or operating partnership unit
March 29, 2018	April 13, 2018	$0.46
June 29, 2018	July 13, 2018	$0.46
September 28, 2018	October 12, 2018	$0.46
January 2, 2019	January 11, 2019	$0.46
March 29, 2019	April 12, 2019	$0.46
June 28, 2019	July 12, 2019	$0.46
September 27, 2019	October 11, 2019	$0.50
January 2, 2020	January 10, 2020	$0.50

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Stockholders' Equity - Declared Cash Dividends and Distributions (Details) - $ / shares	Jan. 10, 2020	Oct. 11, 2019	Jul. 12, 2019	Apr. 12, 2019	Jan. 11, 2019	Oct. 12, 2018	Jul. 13, 2018	Apr. 13, 2018
Class of Stock [Line Items]
Declared cash dividends and distributions (in dollars per share)		$ 0.50	$ 0.46	$ 0.46	$ 0.46	$ 0.46	$ 0.46	$ 0.46
Subsequent Event
Class of Stock [Line Items]
Declared cash dividends and distributions (in dollars per share)	$ 0.50

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Leases - As a Lessee - Supplemental Cash Flow (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 22.1
Operating cash flows from finance leases	1.7
Financing cash flows from finance leases	2.9
Non-cash right-of-use assets obtained in exchange for lease liabilities:
Operating leases	175.1
Finance leases	$ 0.8

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Acquisitions and Purchases of Fixed Assets - Assets Acquired and Liabilities Assumed (Details) - Zenium $ in Millions	Aug. 24, 2018 USD ($)
Business Acquisition [Line Items]
Investment in real estate	$ 597.3
Cash and cash equivalents	12.7
Rent and other receivables	9.0
Other assets	1.1
Accounts payable	(22.3)
Deferred revenue	(3.3)
Capital lease obligations	(25.0)
Deferred tax liability	(72.7)
Debt	(86.3)
Net assets acquired attributable to CyrusOne Inc.	475.5
Cash acquired	(12.7)
Net cash paid at acquisition	462.8
Trade name
Business Acquisition [Line Items]
Intangible assets	1.8
Leasehold interest
Business Acquisition [Line Items]
Intangible assets	1.7
In-place leases
Business Acquisition [Line Items]
Intangible assets	$ 61.5

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Related Party Transactions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
GDS Holdings Limited | Investee
Related Party Transaction [Line Items]
Commission and referral charges payable	$ 0.5	$ 0.9

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Consolidated Statements of Operations - USD ($) shares in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Revenue	$ 981,300,000	$ 821,400,000	$ 672,000,000.0
Operating expenses:
Property operating expenses	383,400,000	292,400,000	235,100,000
Sales and marketing	20,200,000	19,600,000	17,000,000.0
General and administrative	83,500,000	80,600,000	67,000,000.0
Depreciation and amortization	417,700,000	334,100,000	258,900,000
Transaction, acquisition, integration and other related expenses	8,800,000	5,000,000.0	11,900,000
Impairment losses	700,000	0	58,000,000.0
Total operating expenses	914,300,000	731,700,000	647,900,000
Operating income	67,000,000.0	89,700,000	24,100,000
Interest expense, net	(82,000,000.0)	(94,700,000)	(68,100,000)
Gain on marketable equity investment	132,300,000	9,900,000	0
Loss on early extinguishment of debt	(71,800,000)	(3,100,000)	(36,500,000)
Foreign currency and derivative losses, net	(7,500,000)	0	0
Other expense	(300,000)	0	0
Net income (loss) before income taxes	37,700,000	1,800,000	(80,500,000)
Income tax benefit (expense)	3,700,000	(600,000)	(3,000,000.0)
Net income (loss)	$ 41,400,000	$ 1,200,000	$ (83,500,000)
Weighted average number of common shares outstanding - basic (in shares)	112.1	99.8	88.9
Weighted average number of common shares outstanding - diluted (in shares)	112.5	100.4	88.9
Income (loss) per share - basic (in dollars per share)	$ 0.36	$ 0	$ (0.95)
Income (loss) per share - diluted (in dollars per share)	$ 0.36	$ 0	$ (0.95)

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Consolidated Statements of Cash Flows	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Cash flows from operating activities:
Net income (loss)	$ 41,400,000	$ 1,200,000	$ (83,500,000)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	417,700,000	334,100,000	258,900,000
Provision for bad debt expense	1,700,000	2,600,000	200,000
Unrealized gain on marketable equity investment	(65,600,000)	(9,900,000)	0
Realized gain on marketable equity investment	(66,700,000)	0	0
Foreign currency and derivative losses, net	7,500,000	0	0
Proceeds from swap terminations	3,600,000
Loss on asset disposals	400,000	0	0
Impairment loss on real estate	700,000	0	58,000,000.0
Loss on early extinguishment of debt	71,800,000	3,100,000	36,500,000
Interest expense amortization, net	5,000,000.0	4,000,000.0	4,200,000
Stock-based compensation expense	16,700,000	17,500,000	14,700,000
Deferred income tax benefit	(7,500,000)	0	0
Operating lease cost	20,300,000	0	0
Other	200,000	(600,000)	1,500,000
Change in operating assets and liabilities:
Rent and other receivables, net and other assets	(74,200,000)	(80,200,000)	(64,300,000)
Accounts payable and accrued expenses	(800,000)	3,000,000.0	29,300,000
Deferred revenue and prepaid rents	15,600,000	34,500,000	34,000,000.0
Operating lease liabilities	(22,100,000)	0	0
Net cash provided by operating activities	365,700,000	309,300,000	289,500,000
Cash flows from investing activities:
Investment in real estate	(876,400,000)	(865,700,000)	(914,500,000)
Asset acquisitions, primarily real estate, net of cash acquired	0	(462,800,000)	(492,300,000)
Proceeds from sale of equity investments	199,000,000.0	0	0
Equity investments	(3,800,000)	(12,600,000)	(100,000,000.0)
Proceeds from the sale of real estate assets	1,300,000	0	0
Net cash used in investing activities	(679,900,000)	(1,341,100,000)	(1,506,800,000)
Cash flows from financing activities:
Issuance of common stock, net	357,200,000	699,600,000	705,700,000
Dividends paid	(210,400,000)	(181,100,000)	(145,700,000)
Proceeds from revolving credit facility	656,700,000	688,300,000	1,037,300,000
Repayments of revolving credit facility	(182,500,000)	(647,400,000)	(1,275,000,000.0)
Proceeds from unsecured term loan	0	1,300,000,000.0	350,000,000.0
Repayments of unsecured term loan	(200,000,000.0)	(900,000,000.0)	0
Proceeds from senior notes	1,197,400,000	0	1,217,800,000
Repayments of senior notes	(1,200,000,000.0)	0	(474,800,000)
Payment of debt extinguishment costs	(72,000,000.0)	0	(30,000,000.0)
Payment of deferred financing costs	(9,400,000)	0	(16,700,000)
Payments on finance lease liabilities	(2,900,000)	(9,500,000)	(9,800,000)
Interest paid by lenders on issuance of the senior notes	0	0	2,700,000
Tax payment upon exercise of equity awards	(9,300,000)	(5,200,000)	(6,900,000)
Net cash provided by financing activities	324,800,000	944,700,000	1,354,600,000
Effect of exchange rate changes on cash, cash equivalents and restricted cash	2,700,000	(400,000)	0
Net increase (decrease) in cash, cash equivalents and restricted cash	13,300,000	(87,500,000)	137,300,000
Cash, cash equivalents and restricted cash at beginning of period	64,400,000	151,900,000	14,600,000
Cash, cash equivalents and restricted cash at end of period	77,700,000	64,400,000	151,900,000
Supplemental disclosure of cash flow information:
Cash paid for interest, including amounts capitalized of $32.9 million, $24.4 million and $17.0 million in 2019, 2018 and 2017, respectively	123,000,000.0	115,400,000	68,800,000
Cash paid for income taxes	3,500,000	3,400,000	2,200,000
Non-cash investing and financing activities:
Construction costs payable	176,300,000	195,300,000	115,500,000
Dividends payable	$ 58,600,000	$ 51,000,000.0	$ 41,800,000

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Other Assets

12 Months Ended

Dec. 31, 2019

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Other Assets

Other Assets

As of December 31, 2019 and 2018, the components of other assets are as follows (in millions):

	12/31/2019		12/31/2018
Deferred leasing and other contract costs	$	53.2	$	43.6
Prepaid expenses	22.1		26.4
Non-real estate assets, net	16.3		18.4
Derivative assets	3.5		—
Other assets	18.8		22.9
Total	$	113.9	$	111.3

Non-real estate assets, net primarily include administrative related equipment and office leasehold improvements, depreciated or amortized over the shorter of the assets useful life or the related lease term. Other assets primarily includes land deposits, fuel inventory, notes receivable, net deferred tax assets and other deferred costs.

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Income (Loss) per Share

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Income (Loss) per Share

Income (Loss) per Share

Basic income (loss) per share is calculated using the weighted average number of shares of common stock outstanding during the period. In addition, net income (loss) applicable to participating securities and the participating securities are both excluded from the computation of basic income (loss) per share.

Diluted income (loss) per share is calculated using the weighted average number of shares of common stock outstanding during the period, including restricted stock outstanding. If there is net income during the period, the dilutive impact of common stock equivalents outstanding are also reflected.

On November 20, 2019, CyrusOne Inc. entered into a forward sale agreement with Jefferies LLC with respect to 1.6 million shares of its common stock at an initial forward price of $61.67 per share. The hedge completion date was November 29, 2019. The Company has twelve months to settle the forward sale agreement.

On September 28, 2018, CyrusOne Inc. completed a public offering of 6.7 million shares of its common stock for $397.3 million, net of underwriting discounts and expenses of approximately $18.1 million. In connection with this offering, on September 25, 2018, CyrusOne Inc. entered into a forward sale agreement with Morgan Stanley & Co. LLC with respect to an additional 2.5 million shares of its common stock. On December 28, 2018, the Company effected a full physical settlement of the previously announced forward sale agreement entered into with Morgan Stanley & Co. LLC. Upon settlement, the Company issued all such shares to Morgan Stanley & Co. LLC in its capacity as forward purchaser, in exchange for net proceeds of approximately $148.2 million, in accordance with the provisions of the forward sales agreement. This agreement and the settlement thereof had no effect on our diluted share count at December 31, 2018.

The following table reflects the computation of basic and diluted net (loss) income per share:

IN MILLIONS, except per share amounts	Year Ended						Year Ended						Year Ended
For December 31,	2019						2018						2017
	Basic			Diluted			Basic			Diluted			Basic			Diluted
Numerator:
Net income (loss)	$	41.4		$	41.4		$	1.2		$	1.2		$	(83.5	)	$	(83.5	)
Less: Restricted stock dividends	(0.7		)	(0.7		)	(1.1		)	(1.1		)	(0.9		)	(0.9		)
Net income (loss) available to stockholders	$	40.7		$	40.7		$	0.1		$	0.1		$	(84.4	)	$	(84.4	)
Denominator:
Weighted average common outstanding-basic	112.1			112.1			99.8			99.8			88.9			88.9
Performance-based restricted stock and units(1)				0.4						0.6						—
Weighted average shares outstanding-diluted				112.5						100.4						88.9
EPS:
Net income (loss) per share-basic	$	0.36					$	—					$	(0.95	)
Effect of dilutive shares:
Net income (loss) per share-diluted				$	0.36					$	—					$	(0.95	)

⁽¹⁾ We have excluded 0.4 million weighted average shares of restricted stock, and 0.1 million of weighted average stock options which are securities convertible into common stock from our diluted earnings per share as of December 31, 2017. These amounts were deemed anti-dilutive.

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Income Taxes

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

CyrusOne Inc. elected to be taxed as a REIT under the Code, commencing with our taxable year ended December 31, 2013. To remain qualified as a REIT, we are required to distribute at least 90% of our taxable income to our stockholders and meet various other requirements imposed by the Code relating to such matters as operating results, asset holdings, distribution levels and diversity of stock ownership. Provided we continue to qualify for taxation as a REIT, we are generally not subject to corporate level federal income tax on the earnings distributed currently to our stockholders. It is our policy and intent, subject to change, to distribute 100% of our taxable income and therefore no provision is required in the accompanying financial statements for federal income taxes with regards to activities of CyrusOne Inc. and its subsidiary pass-through entities.

The REIT and certain of its subsidiaries are subject to state and local income taxes, franchise taxes, and gross receipts taxes. We have elected to treat certain of our subsidiaries as taxable REIT subsidiaries (TRSs). Our TRSs are subject to U.S. federal, state and local corporate income taxes. Our foreign subsidiaries are subject to corporate income taxes in the jurisdictions in which they operate.

Income tax expense (benefit) for the years ended December 31, 2019, 2018 and 2017 as reported in the accompanying Consolidated Statements of Operations was comprised of the following:

			Year Ended December 31,
IN MILLIONS			2019			2018			2017
	Current
		Federal	$	1.7		$	1.0		$	1.2
		State	1.9			2.0			1.8
		Foreign	0.2			—			—
		Total current expense	$	3.8		$	3.0		$	3.0
	Deferred:
		Federal	—			—			—
		State	—			—			—
		Foreign	$	(7.5	)	$	(2.4	)	$	—
		Total deferred (benefit) expense	(7.5		)	(2.4		)	—
	Total income tax (benefit) expense		$	(3.7	)	$	0.6		$	3.0

An income tax expense reconciliation between the U.S. statutory tax rate and the effective tax rate is as follows:

		Year Ended December 31,
IN MILLIONS		2019			2018			2017
	Income tax at U.S. federal statutory income tax rate	$	7.9		$	0.4		$	(28.2	)
	State and local taxes, net of federal income tax benefit	1.7			2.0			1.8
	Impact of REIT status	(13.7		)	(2.1		)	28.6
	Permanent differences	(0.7		)	(0.1		)	—
	Foreign tax rate and currency differences	(1.0		)	0.2			—
	Anti-hybrid disallowances	1.6			0.1			—
	Valuation allowance	0.5			0.1			0.8
	Income tax (benefit) expense	$	(3.7	)	$	0.6		$	3.0

The effective tax rate on income from continuing operations differs from tax at the statutory rate primarily due to our status as a REIT and taxation of our foreign subsidiaries.

Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases.

The components of the Company’s deferred tax assets and liabilities are as follows:

			Year Ended December 31,
IN MILLIONS			2019			2018
	Deferred tax assets
		Net operating loss carryforwards	$	16.3		$	15.1
		Accounts receivable/payable and other	8.2			7.4
		Finance leases	0.9			1.8
	Total gross deferred tax assets		$	25.4		$	24.3
	Valuation allowance		(7.6		)	(6.9		)
	Total gross deferred tax assets, net		$	17.8		$	17.4
	Deferred tax liabilities
		Fixed assets	(67.4		)	(73.5		)
		Intangibles	$	(10.9	)	$	(12.8	)
	Total gross deferred tax liabilities		$	(78.3	)	$	(86.3	)
	Total net deferred tax assets/(liabilities)		$	(60.5	)	$	(68.9	)

On August 24, 2018, the Company completed the acquisition of Zenium. The Company recorded a deferred tax liability of $72.7 million in connection with the acquisition, which primarily related to differences between the carrying amounts of the assets and liabilities acquired and their tax bases in the jurisdictions in which they operate.

As of December 31, 2019, the Company’s deferred tax assets were primarily attributable to foreign NOL carryforwards that generally do not expire. A valuation allowance will be recorded to reduce deferred tax assets to amounts that are more likely than not to be realized. As of each reporting date, the Company’s management considers new evidence, both positive and negative, that could impact management’s view with regard to future realization of deferred tax assets. The Company has recorded a valuation allowance of $7.6 million as of December 31, 2019.

The Company and its subsidiaries file tax returns in the U.S. federal jurisdiction, various state and local jurisdictions, and certain foreign jurisdictions. With few exceptions, the Company is no longer subject to examination of its U.S. federal, state and local tax returns for years prior to 2015.

As of December 31, 2019, the Company as no liability for unrecognized tax benefits. If applicable, the Company will recognize interest and penalties related to unrecognized tax benefits as a component of tax expense.

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit)

Income tax expense (benefit) for the years ended December 31, 2019, 2018 and 2017 as reported in the accompanying Consolidated Statements of Operations was comprised of the following:

			Year Ended December 31,
IN MILLIONS			2019			2018			2017
	Current
		Federal	$	1.7		$	1.0		$	1.2
		State	1.9			2.0			1.8
		Foreign	0.2			—			—
		Total current expense	$	3.8		$	3.0		$	3.0
	Deferred:
		Federal	—			—			—
		State	—			—			—
		Foreign	$	(7.5	)	$	(2.4	)	$	—
		Total deferred (benefit) expense	(7.5		)	(2.4		)	—
	Total income tax (benefit) expense		$	(3.7	)	$	0.6		$	3.0

Schedule of Effective Income Tax Rate Reconciliation

An income tax expense reconciliation between the U.S. statutory tax rate and the effective tax rate is as follows:

		Year Ended December 31,
IN MILLIONS		2019			2018			2017
	Income tax at U.S. federal statutory income tax rate	$	7.9		$	0.4		$	(28.2	)
	State and local taxes, net of federal income tax benefit	1.7			2.0			1.8
	Impact of REIT status	(13.7		)	(2.1		)	28.6
	Permanent differences	(0.7		)	(0.1		)	—
	Foreign tax rate and currency differences	(1.0		)	0.2			—
	Anti-hybrid disallowances	1.6			0.1			—
	Valuation allowance	0.5			0.1			0.8
	Income tax (benefit) expense	$	(3.7	)	$	0.6		$	3.0

Schedule of Deferred Tax Assets and Liabilities

The components of the Company’s deferred tax assets and liabilities are as follows:

			Year Ended December 31,
IN MILLIONS			2019			2018
	Deferred tax assets
		Net operating loss carryforwards	$	16.3		$	15.1
		Accounts receivable/payable and other	8.2			7.4
		Finance leases	0.9			1.8
	Total gross deferred tax assets		$	25.4		$	24.3
	Valuation allowance		(7.6		)	(6.9		)
	Total gross deferred tax assets, net		$	17.8		$	17.4
	Deferred tax liabilities
		Fixed assets	(67.4		)	(73.5		)
		Intangibles	$	(10.9	)	$	(12.8	)
	Total gross deferred tax liabilities		$	(78.3	)	$	(86.3	)
	Total net deferred tax assets/(liabilities)		$	(60.5	)	$	(68.9	)

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Commitments and Contingencies (Details) ft² in Thousands, £ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2019 GBP (£) ft²	Dec. 31, 2019 USD ($) ft²	Dec. 31, 2018 USD ($)
Loss Contingencies [Line Items]
Outstanding letters of credit			$ 8,200,000
Annual rent				$ 64,200,000
Minimum
Loss Contingencies [Line Items]
Initial lease term		1 year	1 year
Maximum
Loss Contingencies [Line Items]
Initial lease term		25 years	25 years
Performance Guarantee
Loss Contingencies [Line Items]
Accruals for performance guarantees			$ 0	$ 0
Data Center Facilities and Equipment
Loss Contingencies [Line Items]
Commitments expected to be incurred	$ 217,400,000
Data Center Facilities and Equipment | Minimum
Loss Contingencies [Line Items]
Commitment term	1 year
Data Center Facilities and Equipment | Maximum
Loss Contingencies [Line Items]
Commitment term	2 years
Services
Loss Contingencies [Line Items]
Commitments expected to be incurred	$ 89,900,000
Services | Minimum
Loss Contingencies [Line Items]
Commitment term	1 year
Services | Maximum
Loss Contingencies [Line Items]
Commitment term	2 years
London, UK
Loss Contingencies [Line Items]
Area leased (in square feet) | ft²		70	70
Annual rent | £		£ 1.4
Land | London, UK
Loss Contingencies [Line Items]
Initial lease term		20 years	20 years

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Fair Value of Financial Instruments and Hedging Activities (Tables)

12 Months Ended

Dec. 31, 2019

Fair Value Disclosures [Abstract]

Carrying Value and Fair Value of Other Financial Instruments

The carrying value and fair value of other financial instruments are as follows (in millions):

IN MILLIONS
For the year ended December 31,	2019				2018
	Carrying Value		Fair Value		Carrying Value		Fair Value
Old 2024 Notes - 5.000%	$	—	$	—	$	705.5	$	684.1
Old 2027 Notes - 5.375%	—		—		509.1		488.0
2024 Notes - 2.900%	599.2		602.1		—		—
2029 Notes - 3.450%	598.2		603.1		—		—
GDS Equity investment	118.7		118.7		185.5		185.5

Summary of Derivative Positions

The following table summarizes the Company's derivative positions as of December 31, 2019 and 2018 (in millions):

						December 31, 2019				December 31, 2018
		Maturity Date	Notional Amount		Hedged Risk	Asset		Liability		Asset		Liability
Undesignated derivatives
Cross Currency Swaps
	EUR - USD	01/15/2020	$	265.3	Foreign currency exchange	$	—	$	2.1	$	—	$	—
	EUR - USD	01/15/2020	25.6		Foreign currency exchange	—		0.2		—		—
Designated derivatives
Cross Currency Swaps
	EUR - USD	3/29/2023	250.0		Net investment hedge	—		3.8		—		—
	EUR - USD	3/29/2023	250.0		Net investment hedge	—		3.9		—		—
	EUR - USD	1/15/2020	155.9		Net investment hedge	—		1.4		—		—
Interest Rate Swaps
	USD Libor	3/29/2023	300.0		Interest rate hedge - Float to fixed	3.5		—		—		—
Total			$	1,246.8		$	3.5	$	11.4	$	—	$	—

Fair Values of Qualifying Instruments

The fair values of qualifying instruments used in hedging transactions as of December 31, 2019 and 2018 are as follows (in millions):

	Balance Sheet Location	December 31, 2019		December 31, 2018
Derivatives Designated as Hedging Instruments
Assets:
Interest Rate Swap	Other Assets	$	3.5	$	—
Total		$	3.5	$	—
Liabilities:
Cross-Currency Swaps	Other Liabilities	9.1		—
Total		$	9.1	$	—

Effect of Derivative Financial Instruments

The following table presents the effect of our derivative financial instruments on our accompanying consolidated financial statements (in millions):

	December 31, 2019			December 31, 2018
Derivatives in Cash Flow Hedging Relationships
Cross-Currency Swaps:
Amount of gain (loss) recognized in OCI for derivatives	$	(0.7	)	$	—
Amount of gain (loss) reclassified from accumulated OCI for derivatives	$	—		$	—
Amount of gain (loss) recognized in earnings	$	(7.5	)	$	—

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Equity Investments (Tables)

12 Months Ended

Dec. 31, 2019

Investments, Debt and Equity Securities [Abstract]

Unrealized Gain (Loss) on Marketable Equity Investment

IN MILLIONS	Year Ended December 31, 2019		Year Ended December 31, 2018
Net gain on marketable equity investment	$	132.3	$	9.9
Less: Net gain recognized on marketable equity investment sold	66.7		—
Unrealized gain on marketable equity investment	$	65.6	$	9.9

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Guarantors - Consolidating Statements of Cash Flows (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	$ 365.7	$ 309.3	$ 289.5
Cash flows from investing activities:
Asset acquisitions, primarily real estate, net of cash acquired	0.0	(462.8)	(492.3)
Investment in real estate	(876.4)	(865.7)	(914.5)
Investment in subsidiaries	0.0	0.0	0.0
Equity investments	(3.8)	(12.6)	(100.0)
Proceeds from sale of equity investments	199.0	0.0	0.0
Proceeds from the sale of real estate assets	1.3	0.0	0.0
Return of investment	0.0	0.0	0.0
Intercompany borrowings	0.0	0.0	0.0
Net cash used in investing activities	(679.9)	(1,341.1)	(1,506.8)
Cash flows from financing activities:
Issuance of common stock, net	357.2	699.6	705.7
Dividends paid	(210.4)	(181.1)	(145.7)
Intercompany borrowings	0.0	0.0	0.0
Proceeds from revolving credit facility	656.7	688.3	1,037.3
Repayments of revolving credit facility	(182.5)	(647.4)	(1,275.0)
Proceeds from unsecured term loan	0.0	1,300.0	350.0
Repayments of unsecured term loan	(200.0)	(900.0)	0.0
Proceeds from senior notes	1,197.4	0.0	1,217.8
Repayments of senior notes	(1,200.0)	0.0	(474.8)
Payment of debt extinguishment costs	(72.0)	0.0	(30.0)
Payment of deferred financing costs	(9.4)	0.0	(16.7)
Payments on finance lease liabilities	(2.9)	(9.5)	(9.8)
Interest paid by lenders on issuance of the senior notes	0.0	0.0	2.7
Tax payment upon exercise of equity awards	(9.3)	(5.2)	(6.9)
Contributions/distributions from parent	0.0	0.0	0.0
Net cash provided by financing activities	324.8	944.7	1,354.6
Effect of exchange rate changes on cash, cash equivalents and restricted cash	2.7	(0.4)	0.0
Net increase (decrease) in cash, cash equivalents and restricted cash	13.3	(87.5)	137.3
Cash, cash equivalents and restricted cash at beginning of period	64.4	151.9	14.6
Cash, cash equivalents and restricted cash at end of period	77.7	64.4	151.9
General Partner
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	0.0	0.0	0.0
Cash flows from investing activities:
Asset acquisitions, primarily real estate, net of cash acquired		0.0	0.0
Investment in real estate	0.0	0.0	0.0
Investment in subsidiaries	(2.5)	(7.0)	(7.1)
Equity investments	0.0	0.0	0.0
Proceeds from sale of equity investments	0.0
Proceeds from the sale of real estate assets	0.0
Return of investment	0.0	0.0	0.0
Intercompany borrowings	0.0	0.0	0.0
Net cash used in investing activities	(2.5)	(7.0)	(7.1)
Cash flows from financing activities:
Issuance of common stock, net	0.0	0.0	0.0
Dividends paid	0.0	0.0	0.0
Intercompany borrowings	0.0	0.0	0.0
Proceeds from revolving credit facility	0.0	0.0	0.0
Repayments of revolving credit facility	0.0	0.0	0.0
Proceeds from unsecured term loan		0.0	0.0
Repayments of unsecured term loan	0.0	0.0
Proceeds from senior notes	0.0		0.0
Repayments of senior notes	0.0		0.0
Payment of debt extinguishment costs	0.0		0.0
Payment of deferred financing costs	0.0		0.0
Payments on finance lease liabilities	0.0	0.0	0.0
Interest paid by lenders on issuance of the senior notes			0.0
Tax payment upon exercise of equity awards	0.0	0.0	0.0
Contributions/distributions from parent	2.5	7.0	7.1
Net cash provided by financing activities	2.5	7.0	7.1
Effect of exchange rate changes on cash, cash equivalents and restricted cash	0.0	0.0
Net increase (decrease) in cash, cash equivalents and restricted cash	0.0	0.0	0.0
Cash, cash equivalents and restricted cash at beginning of period	0.0	0.0	0.0
Cash, cash equivalents and restricted cash at end of period	0.0	0.0	0.0
Parent Guarantor
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	0.0	0.0	0.0
Cash flows from investing activities:
Asset acquisitions, primarily real estate, net of cash acquired		0.0	0.0
Investment in real estate	0.0	0.0	0.0
Investment in subsidiaries	(357.2)	(700.0)	(705.3)
Equity investments	0.0	0.0	0.0
Proceeds from sale of equity investments	0.0
Proceeds from the sale of real estate assets	0.0
Return of investment	210.4	181.1	145.7
Intercompany borrowings	9.3	5.6	6.5
Net cash used in investing activities	(137.5)	(513.3)	(553.1)
Cash flows from financing activities:
Issuance of common stock, net	357.2	699.6	705.7
Dividends paid	(210.4)	(181.1)	(145.7)
Intercompany borrowings	0.0	0.0	0.0
Proceeds from revolving credit facility	0.0	0.0	0.0
Repayments of revolving credit facility	0.0	0.0	0.0
Proceeds from unsecured term loan		0.0	0.0
Repayments of unsecured term loan	0.0	0.0
Proceeds from senior notes	0.0		0.0
Repayments of senior notes	0.0		0.0
Payment of debt extinguishment costs	0.0		0.0
Payment of deferred financing costs	0.0		0.0
Payments on finance lease liabilities	0.0	0.0	0.0
Interest paid by lenders on issuance of the senior notes			0.0
Tax payment upon exercise of equity awards	(9.3)	(5.2)	(6.9)
Contributions/distributions from parent	0.0	0.0	0.0
Net cash provided by financing activities	137.5	513.3	553.1
Effect of exchange rate changes on cash, cash equivalents and restricted cash	0.0	0.0
Net increase (decrease) in cash, cash equivalents and restricted cash	0.0	0.0	0.0
Cash, cash equivalents and restricted cash at beginning of period	0.0	0.0	0.0
Cash, cash equivalents and restricted cash at end of period	0.0	0.0	0.0
LP Co-issuer
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	(124.9)	(103.6)	(60.3)
Cash flows from investing activities:
Asset acquisitions, primarily real estate, net of cash acquired		0.0	0.0
Investment in real estate	0.0	0.0	0.0
Investment in subsidiaries	(210.4)	(829.5)	(705.3)
Equity investments	0.0	0.0	0.0
Proceeds from sale of equity investments	0.0
Proceeds from the sale of real estate assets	0.0
Return of investment	0.0	0.0	0.0
Intercompany borrowings	8.2	(105.1)	(598.8)
Net cash used in investing activities	(202.2)	(934.6)	(1,304.1)
Cash flows from financing activities:
Issuance of common stock, net	0.0	0.0	0.0
Dividends paid	(210.4)	(181.1)	(145.7)
Intercompany borrowings	(9.3)	(5.6)	(6.5)
Proceeds from revolving credit facility	656.7	658.4	1,037.3
Repayments of revolving credit facility	(182.5)	(532.7)	(1,275.0)
Proceeds from unsecured term loan		1,300.0	350.0
Repayments of unsecured term loan	(200.0)	(900.0)
Proceeds from senior notes	1,197.4		1,217.8
Repayments of senior notes	(1,200.0)		(474.8)
Payment of debt extinguishment costs	(72.0)		(30.0)
Payment of deferred financing costs	(9.4)		(16.7)
Payments on finance lease liabilities	0.0	0.0	0.0
Interest paid by lenders on issuance of the senior notes			2.7
Tax payment upon exercise of equity awards	0.0	0.0	0.0
Contributions/distributions from parent	357.2	700.0	705.3
Net cash provided by financing activities	327.7	1,039.0	1,364.4
Effect of exchange rate changes on cash, cash equivalents and restricted cash	0.0	(0.8)
Net increase (decrease) in cash, cash equivalents and restricted cash	0.6	0.0	0.0
Cash, cash equivalents and restricted cash at beginning of period	0.0	0.0	0.0
Cash, cash equivalents and restricted cash at end of period	0.6	0.0	0.0
Finance Co-issuer
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	0.0	0.0	0.0
Cash flows from investing activities:
Asset acquisitions, primarily real estate, net of cash acquired		0.0	0.0
Investment in real estate	0.0	0.0	0.0
Investment in subsidiaries	0.0	0.0	0.0
Equity investments	0.0	0.0	0.0
Proceeds from sale of equity investments	0.0
Proceeds from the sale of real estate assets	0.0
Return of investment	0.0	0.0	0.0
Intercompany borrowings	0.0	0.0	0.0
Net cash used in investing activities	0.0	0.0	0.0
Cash flows from financing activities:
Issuance of common stock, net	0.0	0.0	0.0
Dividends paid	0.0	0.0	0.0
Intercompany borrowings	0.0	0.0	0.0
Proceeds from revolving credit facility	0.0	0.0	0.0
Repayments of revolving credit facility	0.0	0.0	0.0
Proceeds from unsecured term loan		0.0	0.0
Repayments of unsecured term loan	0.0	0.0
Proceeds from senior notes	0.0		0.0
Repayments of senior notes	0.0		0.0
Payment of debt extinguishment costs	0.0		0.0
Payment of deferred financing costs	0.0		0.0
Payments on finance lease liabilities	0.0	0.0	0.0
Interest paid by lenders on issuance of the senior notes			0.0
Tax payment upon exercise of equity awards	0.0	0.0	0.0
Contributions/distributions from parent	0.0	0.0	0.0
Net cash provided by financing activities	0.0	0.0	0.0
Effect of exchange rate changes on cash, cash equivalents and restricted cash	0.0	0.0
Net increase (decrease) in cash, cash equivalents and restricted cash	0.0	0.0	0.0
Cash, cash equivalents and restricted cash at beginning of period	0.0	0.0	0.0
Cash, cash equivalents and restricted cash at end of period	0.0	0.0	0.0
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	457.7
Cash flows from investing activities:
Investment in real estate	(843.5)
Investment in subsidiaries	0.0
Equity investments	(3.8)
Proceeds from sale of equity investments	199.0
Proceeds from the sale of real estate assets	1.3
Return of investment	0.0
Intercompany borrowings	32.0
Net cash used in investing activities	(615.0)
Cash flows from financing activities:
Issuance of common stock, net	0.0
Dividends paid	0.0
Intercompany borrowings	(40.2)
Proceeds from revolving credit facility	0.0
Repayments of revolving credit facility	0.0
Repayments of unsecured term loan	0.0
Proceeds from senior notes	0.0
Repayments of senior notes	0.0
Payment of debt extinguishment costs	0.0
Payment of deferred financing costs	0.0
Payments on finance lease liabilities	(2.9)
Tax payment upon exercise of equity awards	0.0
Contributions/distributions from parent	210.4
Net cash provided by financing activities	167.3
Effect of exchange rate changes on cash, cash equivalents and restricted cash	2.7
Net increase (decrease) in cash, cash equivalents and restricted cash	12.7
Cash, cash equivalents and restricted cash at beginning of period	64.4
Cash, cash equivalents and restricted cash at end of period	77.1	64.4
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities		421.6	339.7
Cash flows from investing activities:
Asset acquisitions, primarily real estate, net of cash acquired		0.0	(492.3)
Investment in real estate		(814.6)	(903.8)
Investment in subsidiaries		0.0	(0.7)
Equity investments		0.0	0.0
Return of investment		0.0	0.0
Intercompany borrowings		(6.8)	0.0
Net cash used in investing activities		(821.4)	(1,396.8)
Cash flows from financing activities:
Issuance of common stock, net		0.0	0.0
Dividends paid		0.0	0.0
Intercompany borrowings		105.1	598.2
Proceeds from revolving credit facility		0.0	0.0
Repayments of revolving credit facility		0.0	0.0
Proceeds from unsecured term loan		0.0	0.0
Repayments of unsecured term loan		0.0
Proceeds from senior notes			0.0
Repayments of senior notes			0.0
Payment of debt extinguishment costs			0.0
Payment of deferred financing costs			0.0
Payments on finance lease liabilities		(7.9)	(8.6)
Interest paid by lenders on issuance of the senior notes			0.0
Tax payment upon exercise of equity awards		0.0	0.0
Contributions/distributions from parent		178.6	605.3
Net cash provided by financing activities		275.8	1,194.9
Effect of exchange rate changes on cash, cash equivalents and restricted cash		0.0
Net increase (decrease) in cash, cash equivalents and restricted cash		(124.0)	137.8
Cash, cash equivalents and restricted cash at beginning of period	27.2	151.2	13.4
Cash, cash equivalents and restricted cash at end of period		27.2	151.2
Non- Guarantors
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities		(27.9)	(0.6)
Cash flows from investing activities:
Asset acquisitions, primarily real estate, net of cash acquired		(462.8)	0.0
Investment in real estate		(31.9)	0.0
Investment in subsidiaries		0.0	0.0
Equity investments		(12.6)	(100.0)
Return of investment		0.0	0.0
Intercompany borrowings		0.0	0.5
Net cash used in investing activities		(507.3)	(99.5)
Cash flows from financing activities:
Issuance of common stock, net		0.0	0.0
Dividends paid		0.0	0.0
Intercompany borrowings		6.8	0.0
Proceeds from revolving credit facility		29.9	0.0
Repayments of revolving credit facility		(114.7)	0.0
Proceeds from unsecured term loan		0.0	0.0
Repayments of unsecured term loan		0.0
Proceeds from senior notes			0.0
Repayments of senior notes			0.0
Payment of debt extinguishment costs			0.0
Payment of deferred financing costs			0.0
Payments on finance lease liabilities		(1.6)	(1.2)
Interest paid by lenders on issuance of the senior notes			0.0
Tax payment upon exercise of equity awards		0.0	0.0
Contributions/distributions from parent		650.9	100.8
Net cash provided by financing activities		571.3	99.6
Effect of exchange rate changes on cash, cash equivalents and restricted cash		0.4
Net increase (decrease) in cash, cash equivalents and restricted cash		36.5	(0.5)
Cash, cash equivalents and restricted cash at beginning of period	37.2	0.7	1.2
Cash, cash equivalents and restricted cash at end of period		37.2	0.7
Eliminations/Consolidations
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	32.9	19.2	10.7
Cash flows from investing activities:
Asset acquisitions, primarily real estate, net of cash acquired		0.0	0.0
Investment in real estate	(32.9)	(19.2)	(10.7)
Investment in subsidiaries	570.1	1,536.5	1,418.4
Equity investments	0.0	0.0	0.0
Proceeds from sale of equity investments	0.0
Proceeds from the sale of real estate assets	0.0
Return of investment	(210.4)	(181.1)	(145.7)
Intercompany borrowings	(49.5)	106.3	591.8
Net cash used in investing activities	277.3	1,442.5	1,853.8
Cash flows from financing activities:
Issuance of common stock, net	0.0	0.0	0.0
Dividends paid	210.4	181.1	145.7
Intercompany borrowings	49.5	(106.3)	(591.7)
Proceeds from revolving credit facility	0.0	0.0	0.0
Repayments of revolving credit facility	0.0	0.0	0.0
Proceeds from unsecured term loan		0.0	0.0
Repayments of unsecured term loan	0.0	0.0
Proceeds from senior notes	0.0		0.0
Repayments of senior notes	0.0		0.0
Payment of debt extinguishment costs	0.0		0.0
Payment of deferred financing costs	0.0		0.0
Payments on finance lease liabilities	0.0	0.0	0.0
Interest paid by lenders on issuance of the senior notes			0.0
Tax payment upon exercise of equity awards	0.0	0.0	0.0
Contributions/distributions from parent	(570.1)	(1,536.5)	(1,418.5)
Net cash provided by financing activities	(310.2)	(1,461.7)	(1,864.5)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	0.0	0.0
Net increase (decrease) in cash, cash equivalents and restricted cash	0.0	0.0	0.0
Cash, cash equivalents and restricted cash at beginning of period	0.0	0.0	0.0
Cash, cash equivalents and restricted cash at end of period	$ 0.0	$ 0.0	$ 0.0

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Stock-Based Compensation - Compensation Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total compensation expense	$ 16.7	$ 17.5	$ 14.7
2014 Grants
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total compensation expense	0.0	0.0	0.1
2015 Grants
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total compensation expense	0.0	0.4	1.8
2016 Grants
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total compensation expense	1.1	5.7	6.6
2017 Grants
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total compensation expense	3.1	4.6	6.2
2018 Grants
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total compensation expense	5.4	6.8	0.0
2019 Grants and ESPP expense
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total compensation expense	$ 7.1	$ 0.0	$ 0.0

XML

Leases - As a Lessee - Supplemental Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Operating leases:
Operating lease right-of-use assets, net of amortization	$ 161.9
Operating lease liabilities	195.8	$ 0.0
Finance leases:
Property and equipment, at cost	34.9
Accumulated amortization	(5.0)
Property and equipment, net	29.9
Finance lease liabilities	$ 31.8
Weighted average remaining lease term (in years):
Operating leases	15 years 9 months 18 days
Finance leases	18 years 1 month 6 days
Weighted average discount rate:
Operating leases	3.90%
Finance leases	4.90%

XML

Acquisitions and Purchases of Fixed Assets - Narrative (Details) ft² in Thousands, £ in Millions		1 Months Ended			12 Months Ended
	Aug. 24, 2018 USD ($) data_center	Nov. 30, 2019 GBP (£) ft² a	Sep. 30, 2019 USD ($) a MW	Aug. 31, 2019 GBP (£) ft² a MW	Dec. 31, 2019 USD ($) a	Dec. 31, 2018 USD ($) a	Aug. 31, 2018 USD ($)	Mar. 31, 2018 USD ($)	Mar. 29, 2018 USD ($)
Business Acquisition [Line Items]
Number of acres purchased | a					74
Fixed lease payments					$ 20,300,000
Data Centers | Zenium Topco Ltd.
Business Acquisition [Line Items]
Number of operating data centers | data_center	4
Aggregate cash consideration after post-closing working capital adjustment	$ 462,800,000
Cash acquired	12,700,000
Outstanding indebtedness assumed	86,300,000
Payments related to post-closing working capital adjustment						$ 1,000,000.0
Borrowings on line of credit	174,500,000
Dublin, Ireland, San Antonio, Santa Clara and Council Bluffs | Land
Business Acquisition [Line Items]
Purchase price					54,700,000
Dallas, Frankfurt, Northern Virginia, Phoenix and Santa Clara | Land
Business Acquisition [Line Items]
Number of acres purchased | a						182
Purchase price						$ 182,300,000
Dublin, Ireland | Area leased and purchased for future development
Business Acquisition [Line Items]
Area of land leased (in acres) | a			24
Dublin, Ireland | Ground Lease 1
Business Acquisition [Line Items]
Area of land leased (in acres) | a			16
Datacenter output (MW) | MW			6
Prepaid lease payments			$ 6,300,000
Dublin, Ireland | Area purchased for future development
Business Acquisition [Line Items]
Area of land leased (in acres) | a			9
London, UK | Ground Lease 1
Business Acquisition [Line Items]
Area of land leased (in acres) | a				3
Datacenter output (MW) | MW				6
Area of building shell (in square feet) | ft²				51
Operating lease, term of contract				25 years
Operating lease, renewal term				25 years
Fixed lease payments | £				£ 0.9
London, UK | Ground Lease 2
Business Acquisition [Line Items]
Area of land leased (in acres) | a		6.5
Area of building shell (in square feet) | ft²		105
Operating lease, term of contract		20 years
Operating lease, renewal term		15 years
Fixed lease payments | £		£ 2.1
Ground Lease 1 | Dublin, Ireland
Business Acquisition [Line Items]
Finance lease, term of contract			999 years
Term Loan
Business Acquisition [Line Items]
Borrowings on line of credit							$ 174,500,000
2023 Term Loan | Term Loan
Business Acquisition [Line Items]
Proceeds from delayed draw term loan							300,000,000.0		$ 300,000,000.0
Borrowings on line of credit					800,000,000.0	$ 1,000,000,000.0		$ 700,000,000.0
Maximum borrowing capacity									1,000,000,000.0
2023 Term Loan | Term Loan | Data Centers | Zenium Topco Ltd.
Business Acquisition [Line Items]
Proceeds from delayed draw term loan	300,000,000.0
Revolving Credit Facility | $1.7 Billion Revolving Credit Facility
Business Acquisition [Line Items]
Borrowings on line of credit					615,000,000.0
Maximum borrowing capacity					$ 1,700,000,000		$ 1,700,000,000		$ 1,700,000,000
Revolving Credit Facility | $1.7 Billion Revolving Credit Facility | Data Centers | Zenium Topco Ltd.
Business Acquisition [Line Items]
Maximum borrowing capacity	$ 1,700,000,000

XML

Stock-Based Compensation - Option Valuation Assumptions (Details) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Number of Shares (in shares)	375,086	401,223
Options Exercisable, Number of Shares (in shares)	375,086
$23.58
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices (in dollars per share)	$ 23.58	$ 23.58	$ 23.58
Options Outstanding, Number of Shares (in shares)	51,985	53,086	67,322
Options Outstanding, Weighted Average Remaining Contractual Terms (Years)	3 years 3 months 18 days	4 years 3 months 18 days	5 years 3 months 18 days
Options Exercisable, Number of Shares (in shares)	51,985	53,086	67,322
Options Exercisable, Weighted Average Remaining Contractual Terms (Years)	3 years 3 months 18 days	4 years 3 months 18 days	5 years 3 months 18 days
Risk-Free Interest Rate (as a percent)	0.92%	0.92%	0.92%
Expected Annual Dividend Yield (as a percent)	3.40%	3.40%	3.40%
Expected Terms in Years	6 years	6 years	6 years
Expected Volatility (as a percent)	35.00%	35.00%	35.00%
$28.42
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices (in dollars per share)	$ 28.42	$ 28.42	$ 28.42
Options Outstanding, Number of Shares (in shares)	143,358	143,358	143,358
Options Outstanding, Weighted Average Remaining Contractual Terms (Years)	5 years 1 month 6 days	6 years 1 month 6 days	7 years 1 month 6 days
Options Exercisable, Number of Shares (in shares)	143,358	143,358	95,572
Options Exercisable, Weighted Average Remaining Contractual Terms (Years)	5 years 1 month 6 days	6 years 1 month 6 days	7 years 1 month 6 days
Expected Annual Dividend Yield (as a percent)	4.40%	4.40%	4.40%
$30.74
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices (in dollars per share)	$ 30.74	$ 30.74	$ 30.74
Options Outstanding, Number of Shares (in shares)	12,719	12,719	12,719
Options Outstanding, Weighted Average Remaining Contractual Terms (Years)	5 years 7 months 6 days	6 years 7 months 6 days	7 years 7 months 6 days
Options Exercisable, Number of Shares (in shares)	12,719	12,719	8,479
Options Exercisable, Weighted Average Remaining Contractual Terms (Years)	5 years 7 months 6 days	6 years 7 months 6 days	7 years 7 months 6 days
Expected Annual Dividend Yield (as a percent)	4.40%	4.40%	4.40%
$36.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices (in dollars per share)	$ 36.99	$ 36.99	$ 36.99
Options Outstanding, Number of Shares (in shares)	167,024	192,060	192,060
Options Outstanding, Weighted Average Remaining Contractual Terms (Years)	6 years 1 month 6 days	6 years 9 months 18 days	8 years 1 month 6 days
Options Exercisable, Number of Shares (in shares)	167,024	130,425	64,022
Options Exercisable, Weighted Average Remaining Contractual Terms (Years)	6 years 1 month 6 days	6 years 8 months 12 days	8 years 1 month 6 days
Expected Annual Dividend Yield (as a percent)	4.10%	4.10%	4.10%
Minimum | $28.42
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-Free Interest Rate (as a percent)	1.60%	1.60%	1.60%
Expected Terms in Years	5 years 6 months	5 years 6 months	5 years 6 months
Expected Volatility (as a percent)	32.50%	32.50%	32.50%
Minimum | $30.74
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-Free Interest Rate (as a percent)	1.60%	1.60%	1.60%
Expected Terms in Years	5 years 6 months	5 years 6 months	5 years 6 months
Expected Volatility (as a percent)	32.50%	32.50%	32.50%
Minimum | $36.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-Free Interest Rate (as a percent)	1.47%	1.47%	1.47%
Expected Terms in Years	5 years 6 months	5 years 6 months	5 years 6 months
Expected Volatility (as a percent)	27.50%	27.50%	27.50%
Maximum | $28.42
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-Free Interest Rate (as a percent)	1.75%	1.75%	1.75%
Expected Terms in Years	6 years 6 months	6 years 6 months	6 years 6 months
Expected Volatility (as a percent)	37.50%	37.50%	37.50%
Maximum | $30.74
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-Free Interest Rate (as a percent)	1.75%	1.75%	1.75%
Expected Terms in Years	6 years 6 months	6 years 6 months	6 years 6 months
Expected Volatility (as a percent)	37.50%	37.50%	37.50%
Maximum | $36.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-Free Interest Rate (as a percent)	1.64%	1.64%	1.64%
Expected Terms in Years	6 years 6 months	6 years 6 months	6 years 6 months
Expected Volatility (as a percent)	35.00%	35.00%	35.00%

XML

Guarantors (Tables)

12 Months Ended

Dec. 31, 2019

Condensed Financial Information Disclosure [Abstract]

Consolidating Balance Sheet

Consolidating Balance Sheets

IN MILLIONS	As of December 31, 2019
	Parent Guarantor		General Partner		LP Co-issuer		Finance Co-issuer		Non-Guarantor Subsidiaries		Eliminations/Consolidations			Total
Total investment in real estate, net	$	—	$	—	$	—	$	—	$	4,640.4	$	69.9		$	4,710.3
Cash and cash equivalents	—		—		0.6		—		75.8		—			76.4
Investment in subsidiaries	2,402.2		16.8		3,569.0		—		—		(5,988.0		)	—
Rent and other receivables, net	—		—		—		—		291.9		—			291.9
Restricted cash	—		—		—		—		1.3		—			1.3
Operating lease right-of-use assets, net	—		—		—		—		161.9		—			161.9
Intercompany receivable	21.1		—		1,753.3		—		38.8		(1,813.2		)	—
Equity investments	—		—		—		—		135.1		—			135.1
Goodwill	—		—		—		—		455.1		—			455.1
Intangible assets, net	—		—		—		—		196.1		—			196.1
Other assets	—		—		3.5		—		110.4		—			113.9
Total assets	$	2,423.3	$	16.8	$	5,326.4	$	—	$	6,106.8	$	(7,731.3	)	$	6,142.0
Debt	$	—	$	—	$	2,886.6	$	—	$	—	$	—		$	2,886.6
Intercompany payable	—		—		21.1		—		1,792.1		(1,813.2		)	—
Finance lease liabilities	—		—		—		—		31.8		—			31.8
Operating lease liabilities	—		—		—		—		195.8		—			195.8
Construction costs payable	—		—		—		—		176.3		—			176.3
Accounts payable and accrued expenses	—		—		5.1		—		117.6		—			122.7
Dividends payable	58.6		—		—		—		—		—			58.6
Deferred revenue and prepaid rents	—		—		—		—		163.7		—			163.7
Deferred tax liability	—		—		—		—		60.5		—			60.5
Other liabilities	—		—		11.4		—		—		—			11.4
Total liabilities	58.6		—		2,924.2		—		2,537.8		(1,813.2		)	3,707.4
Total stockholders' equity	2,364.7		16.8		2,402.2		—		3,569.0		(5,918.1		)	2,434.6
Total liabilities and equity	$	2,423.3	$	16.8	$	5,326.4	$	—	$	6,106.8	$	(7,731.3	)	$	6,142.0

IN MILLIONS	As of December 31, 2018
	Parent Guarantor		General Partner		LP Co-issuer		Finance Co-issuer		Guarantor Subsidiaries		Non- Guarantors		Eliminations/Consolidations			Total
Total investment in real estate, net	$	—	$	—	$	—	$	—	$	3,611.2	$	644.9	$	36.9		$	4,293.0
Cash and cash equivalents	—		—		—		—		27.2		37.2		—			64.4
Investment in subsidiaries	2,216.9		22.2		3,122.5		—		—		—		(5,361.6		)	—
Rent and other receivables, net	—		—		—		—		218.7		16.2		—			234.9
Intercompany receivable	23.2		—		1,761.5		—		6.8		—		(1,791.5		)	—
Equity investments	—		—		—		—		—		198.1		—			198.1
Goodwill	—		—		—		—		455.1		—		—			455.1
Intangible assets, net	—		—		—		—		178.1		57.6		—			235.7
Other assets	—		—		0.5		—		94.4		16.4		—			111.3
Total assets	$	2,240.1	$	22.2	$	4,884.5	$	—	$	4,591.5	$	970.4	$	(7,116.2	)	$	5,592.5
Debt	$	—	$	—	$	2,624.7	$	—	$	—	$	—	$	—		$	2,624.7
Intercompany payable	—		—		23.2		—		1,761.5		6.8		(1,791.5		)	—
Finance lease liabilities	—		—		—		—		104.0		52.7		—			156.7
Construction costs payable	—		—		—		—		175.6		19.7		—			195.3
Accounts payable and accrued expenses	—		—		19.7		—		95.9		5.7		—			121.3
Dividends payable	51.0		—		—		—		—		—		—			51.0
Deferred revenue and prepaid rents	—		—		—		—		144.9		3.7		—			148.6
Deferred tax liability	—		—		—		—		—		68.9		—			68.9
Total liabilities	51.0		—		2,667.6		—		2,281.9		157.5		(1,791.5		)	3,366.5
Total stockholders' equity	2,189.1		22.2		2,216.9		—		2,309.6		812.9		(5,324.7		)	2,226.0
Total liabilities and equity	$	2,240.1	$	22.2	$	4,884.5	$	—	$	4,591.5	$	970.4	$	(7,116.2	)	$	5,592.5

Consolidating Statements of Operations and Comprehensive Income (Loss)

Consolidating Statements of Operations and Comprehensive Income (Loss)

IN MILLIONS	Year Ended December 31, 2019
	Parent Guarantor		General Partner		LP Co-issuer			Finance Co-issuer		Non-Guarantor Subsidiaries			Eliminations/Consolidations			Total
Revenue	$	—	$	—	$	—		$	—	$	981.3		$	—		$	981.3
Total operating expenses	—		—		—			—		914.3			—			914.3
Operating income	—		—		—			—		67.0			—			67.0
Interest (expense) income, net	—		—		(114.5		)	—		(0.4		)	32.9			(82.0		)
Gain on marketable equity investment	—		—		—			—		132.3			—			132.3
Loss on early extinguishment of debt	—		—		(71.8		)	—		—			—			(71.8		)
Foreign currency and derivative losses, net	—		—		(7.5		)	—		—			—			(7.5		)
Other expense	—		—		—			—		(0.3		)	—			(0.3		)
(Loss) income before income taxes	—		—		(193.8		)	—		198.6			32.9			37.7
Income tax benefit	—		—		—			—		3.7			—			3.7
Equity earnings (loss) related to investment in subsidiaries	19.6		0.1		214.1			—		—			(233.8		)	—
Net income (loss)	19.6		0.1		20.3			—		202.3			(200.9		)	41.4
Other comprehensive income	—		—		(0.7		)	—		11.8			—			11.1
Comprehensive income (loss)	$	19.6	$	0.1	$	19.6		$	—	$	214.1		$	(200.9	)	$	52.5

IN MILLIONS	Year Ended December 31, 2018
	Parent Guarantor			General Partner			LP Co-issuer			Finance Co-issuer		Guarantor Subsidiaries			Non- Guarantors			Eliminations/Consolidations			Total
Revenue	$	—		$	—		$	—		$	—	$	799.7		$	21.7		$	—		$	821.4
Total operating expenses	—			—			—			—		700.2			31.5			—			731.7
Operating income (loss)	—			—			—			—		99.5			(9.8		)	—			89.7
Interest (expense) benefit, net	—			—			(110.6		)	—		—			(3.3		)	19.2			(94.7		)
Gain on marketable equity investment	—			—			—			—		—			9.9			—			9.9
Loss on early extinguishment of debt	—			—			(3.1		)	—		—			—			—			(3.1		)
(Loss) income before income taxes	—			—			(113.7		)	—		99.5			(3.2		)	19.2			1.8
Income tax (expense) benefit	—			—			—			—		(3.0		)	2.4			—			(0.6		)
Equity (loss) earnings related to investment in subsidiaries	(28.9		)	(0.3		)	84.8			—		—			—			(55.6		)	—
Net (loss) income	(28.9		)	(0.3		)	(28.9		)	—		96.5			(0.8		)	(36.4		)	1.2
Other comprehensive loss	—			—			—			—		—			(10.9		)	—			(10.9		)
Comprehensive (loss) income	$	(28.9	)	$	(0.3	)	$	(28.9	)	$	—	$	96.5		$	(11.7	)	$	(36.4	)	$	(9.7	)

IN MILLIONS	Year Ended December 31, 2017
	Parent Guarantor			General Partner			LP Co-issuer			Finance Co-issuer		Guarantor Subsidiaries			Non- Guarantors			Eliminations/Consolidations			Total
Revenue	$	—		$	—		$	—		$	—	$	666.4		$	5.6		$	—		$	672.0
Total operating expenses	—			—			—			—		640.4			7.5			—			647.9
Operating income (loss)	—			—			—			—		26.0			(1.9		)	—			24.1
Interest (expense) benefit, net	—			—			(76.2		)	—		—			(2.6		)	10.7			(68.1		)
Loss on early extinguishment of debt	—			—			(36.5		)	—		—			—			—			(36.5		)
(Loss) income before income taxes	—			—			(112.7		)	—		26.0			(4.5		)	10.7			(80.5		)
Income tax expense	—			—			—			—		(3.0		)	—			—			(3.0		)
Equity (loss) earnings related to investment in subsidiaries	(18.7		)	(0.2		)	94.0			—		(4.6		)	—			(70.5		)	—
Net (loss) income	(18.7		)	(0.2		)	(18.7		)	—		18.4			(4.5		)	(59.8		)	(83.5		)
Other comprehensive income	—			—			—			—		—			75.5			—			75.5
Comprehensive (loss) income	$	(18.7	)	$	(0.2	)	$	(18.7	)	$	—	$	18.4		$	71.0		$	(59.8	)	$	(8.0	)

Consolidating Statements of Cash Flows

Consolidating Statements of Cash Flows

IN MILLIONS	Year Ended December 31, 2019
	Parent Guarantor			General Partner			LP Co-issuer			Finance Co-issuer		Non-Guarantor Subsidiaries			Eliminations/Consolidations			Total
Net cash (used in) provided by operating activities	$	—		$	—		$	(124.9	)	$	—	$	457.7		$	32.9		$	365.7
Cash flows from investing activities:
Investment in real estate	—			—			—			—		(843.5		)	(32.9		)	(876.4		)
Investment in subsidiaries	(357.2		)	(2.5		)	(210.4		)	—		—			570.1			—
Equity investments	—			—			—			—		(3.8		)	—			(3.8		)
Proceeds from sale of equity investments	—			—			—			—		199.0			—			199.0
Proceeds from the sale of real estate assets	—			—			—			—		1.3			—			1.3
Return of investment	210.4			—			—			—		—			(210.4		)	—
Intercompany borrowings	9.3			—			8.2			—		32.0			(49.5		)	—
Net cash (used in) provided by investing activities	(137.5		)	(2.5		)	(202.2		)	—		(615.0		)	277.3			(679.9		)
Cash flows from financing activities:
Issuance of common stock, net	357.2			—			—			—		—			—			357.2
Dividends paid	(210.4		)	—			(210.4		)	—		—			210.4			(210.4		)
Intercompany borrowings	—			—			(9.3		)	—		(40.2		)	49.5			—
Proceeds from revolving credit facility	—			—			656.7			—		—			—			656.7
Repayments of revolving credit facility	—			—			(182.5		)	—		—			—			(182.5		)
Repayments of unsecured term loan	—			—			(200.0		)	—		—			—			(200.0		)
Proceeds from senior notes	—			—			1,197.4			—		—			—			1,197.4
Repayments of senior notes	—			—			(1,200.0		)	—		—			—			(1,200.0		)
Payment of debt extinguishment costs	—			—			(72.0		)	—		—			—			(72.0		)
Payment of deferred financing costs	—			—			(9.4		)	—		—			—			(9.4		)
Payments on finance lease liabilities	—			—			—			—		(2.9		)	—			(2.9		)
Tax payment upon exercise of equity awards	(9.3		)	—			—			—		—			—			(9.3		)
Contributions/distributions from parent	—			2.5			357.2			—		210.4			(570.1		)	—
Net cash provided by (used in) financing activities	137.5			2.5			327.7			—		167.3			(310.2		)	324.8
Effect of exchange rate changes on cash, cash equivalents and restricted cash	—			—			—			—		2.7			—			2.7
Net increase (decrease) in cash, cash equivalents and restricted cash	—			—			0.6			—		12.7			—			13.3
Cash, cash equivalents and restricted cash at beginning of period	—			—			—			—		64.4			—			64.4
Cash, cash equivalents and restricted cash at end of period	$	—		$	—		$	0.6		$	—	$	77.1		$	—		$	77.7

IN MILLIONS	Year Ended December 31, 2018
	Parent Guarantor			General Partner			LP Co-issuer			Finance Co-issuer		Guarantor Subsidiaries			Non- Guarantors			Eliminations/Consolidations			Total
Net cash (used in) provided by operating activities	$	—		$	—		$	(103.6	)	$	—	$	421.6		$	(27.9	)	$	19.2		$	309.3
Cash flows from investing activities:
Asset acquisitions, primarily real estate, net of cash acquired	—			—			—			—		—			(462.8		)	—			(462.8		)
Investment in real estate	—			—			—			—		(814.6		)	(31.9		)	(19.2		)	(865.7		)
Equity investments	—			—			—			—		—			(12.6		)	—			(12.6		)
Investment in subsidiaries	(700.0		)	(7.0		)	(829.5		)	—		—			—			1,536.5			—
Return of investment	181.1			—			—			—		—			—			(181.1		)	—
Intercompany borrowings	5.6			—			(105.1		)	—		(6.8		)	—			106.3			—
Net cash (used in) provided by investing activities	(513.3		)	(7.0		)	(934.6		)	—		(821.4		)	(507.3		)	1,442.5			(1,341.1		)
Cash flows from financing activities:
Issuance of common stock, net	699.6			—			—			—		—			—			—			699.6
Dividends paid	(181.1		)	—			(181.1		)	—		—			—			181.1			(181.1		)
Intercompany borrowings	—			—			(5.6		)	—		105.1			6.8			(106.3		)	—
Proceeds from revolving credit facility	—			—			658.4			—		—			29.9			—			688.3
Repayments of revolving credit facility	—			—			(532.7		)	—		—			(114.7		)	—			(647.4		)
Proceeds from unsecured term loan	—			—			1,300.0			—		—			—			—			1,300.0
Repayments of unsecured term loan	—			—			(900.0		)	—		—			—			—			(900.0		)
Payments on finance lease liabilities	—			—			—			—		(7.9		)	(1.6		)	—			(9.5		)
Tax payment upon exercise of equity awards	(5.2		)	—			—			—		—			—			—			(5.2		)
Contributions/distributions from parent	—			7.0			700.0			—		178.6			650.9			(1,536.5		)	—
Net cash provided by (used in) financing activities	513.3			7.0			1,039.0			—		275.8			571.3			(1,461.7		)	944.7
Effect of exchange rate changes on cash, cash equivalents and restricted cash	—			—			(0.8		)	—		—			0.4			—			(0.4		)
Net increase (decrease) in cash, cash equivalents and restricted cash	—			—			—			—		(124.0		)	36.5			—			(87.5		)
Cash, cash equivalents and restricted cash at beginning of period	—			—			—			—		151.2			0.7			—			151.9
Cash, cash equivalents and restricted cash at end of period	$	—		$	—		$	—		$	—	$	27.2		$	37.2		$	—		$	64.4

IN MILLIONS	Year Ended December 31, 2017
	Parent Guarantor			General Partner			LP Co-issuer			Finance Co-issuer		Guarantor Subsidiaries			Non- Guarantors			Eliminations/Consolidations			Total
Net cash (used in) provided by operating activities	$	—		$	—		$	(60.3	)	$	—	$	339.7		$	(0.6	)	$	10.7		$	289.5
Cash flows from investing activities:
Asset acquisitions, primarily real estate, net of cash acquired	—			—			—			—		(492.3		)	—			—			(492.3		)
Investment in real estate	—			—			—			—		(903.8		)	—			(10.7		)	(914.5		)
Equity investments	—			—			—			—		—			(100.0		)	—			(100.0		)
Investment in subsidiaries	(705.3		)	(7.1		)	(705.3		)	—		(0.7		)	—			1,418.4			—
Return of investment	145.7			—			—			—		—			—			(145.7		)	—
Intercompany borrowings	6.5			—			(598.8		)	—		—			0.5			591.8			—
Net cash (used in) provided by investing activities	(553.1		)	(7.1		)	(1,304.1		)	—		(1,396.8		)	(99.5		)	1,853.8			(1,506.8		)
Cash flows from financing activities:
Issuance of common stock, net	705.7			—			—			—		—			—			—			705.7
Dividends paid	(145.7		)	—			(145.7		)	—		—			—			145.7			(145.7		)
Intercompany borrowings	—			—			(6.5		)	—		598.2			—			(591.7		)	—
Proceeds from revolving credit facility	—			—			1,037.3			—		—			—			—			1,037.3
Repayments of revolving credit facility	—			—			(1,275.0		)	—		—			—			—			(1,275.0		)
Proceeds from unsecured term loan	—			—			350.0			—		—			—			—			350.0
Proceeds from senior notes	—			—			1,217.8			—		—			—			—			1,217.8
Repayments of senior notes	—			—			(474.8		)	—		—			—			—			(474.8		)
Payment of debt extinguishment costs	—			—			(30.0		)	—		—			—			—			(30.0		)
Payment of deferred financing costs	—			—			(16.7		)	—		—			—			—			(16.7		)
Payments on finance lease liabilities	—			—			—			—		(8.6		)	(1.2		)	—			(9.8		)
Interest paid by lenders on issuance of the senior notes	—			—			2.7			—		—			—			—			2.7
Tax payment upon exercise of equity awards	(6.9		)	—			—			—		—			—			—			(6.9		)
Contributions/distributions from parent	—			7.1			705.3			—		605.3			100.8			(1,418.5		)	—
Net cash provided by (used in) financing activities	553.1			7.1			1,364.4			—		1,194.9			99.6			(1,864.5		)	1,354.6
Net increase (decrease) in cash, cash equivalents and restricted cash	—			—			—			—		137.8			(0.5		)	—			137.3
Cash, cash equivalents and restricted cash at beginning of period	—			—			—			—		13.4			1.2			—			14.6
Cash, cash equivalents and restricted cash at end of period	$	—		$	—		$	—		$	—	$	151.2		$	0.7		$	—		$	151.9

XML

Recently Issued Accounting Standards - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018	Jan. 01, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
ROU assets	$ 161.9
Operating lease liabilities	$ 195.8		$ 0.0
ASC 842
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
ROU assets		$ 87.0
Operating lease liabilities		123.2
Retained earnings | ASC 842
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment		$ 9.5
Retained earnings | ASU 2016-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment				$ 75.6

XML

Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Revenue	$ 253.9	$ 250.9	$ 251.5	$ 225.0	$ 221.3	$ 206.6	$ 196.9	$ 196.6	$ 981.3	$ 821.4	$ 672.0
Lease revenue
Disaggregation of Revenue [Line Items]
Revenue									932.3
Colocation (Minimum lease payments)
Disaggregation of Revenue [Line Items]
Revenue									793.5
Metered power reimbursements (Variable lease payments)
Disaggregation of Revenue [Line Items]
Revenue									138.8
Revenue from contracts with customers
Disaggregation of Revenue [Line Items]
Revenue									49.0	32.7
Equipment sales and services
Disaggregation of Revenue [Line Items]
Revenue									29.7	15.3
Other revenue
Disaggregation of Revenue [Line Items]
Revenue									$ 19.3	$ 17.4

XML

Employee Benefit Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Retirement Benefits [Abstract]
Health care plan expenses	$ 3.9	$ 3.3	$ 2.7
Retirement savings plan matching contributions	$ 1.9	$ 1.8	$ 1.5

XML

Debt - Components of Debt (Details) - USD ($)		9 Months Ended	12 Months Ended
	Mar. 29, 2018	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Aug. 31, 2018	Mar. 31, 2018
Debt Instrument [Line Items]
Deferred financing costs			$ (25,800,000)	$ (32,900,000)
Total			2,886,600,000	2,624,700,000
US Revolver | Revolving Credit Facility
Debt Instrument [Line Items]
Credit facilities			555,000,000.0	0
EUR Revolver | Revolving Credit Facility
Debt Instrument [Line Items]
Credit facilities			33,600,000	143,000,000.0
GBP Revolver | Revolving Credit Facility
Debt Instrument [Line Items]
Credit facilities			26,400,000	0
$1.7 Billion Revolving Credit Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Credit facilities			615,000,000.0
Maximum borrowing capacity	$ 1,700,000,000		1,700,000,000		$ 1,700,000,000
Option to extend maturity of debt, period	1 year	1 year
Term Loan
Debt Instrument [Line Items]
Credit facilities					$ 174,500,000
Term Loan | 2023 Term Loan
Debt Instrument [Line Items]
Credit facilities			800,000,000.0	1,000,000,000.0		$ 700,000,000.0
Maximum borrowing capacity	$ 1,000,000,000.0
Term Loan | 2025 Term Loan
Debt Instrument [Line Items]
Credit facilities			300,000,000.0	300,000,000.0
Maximum borrowing capacity	$ 300,000,000.0
Senior Notes | Old 2024 Notes, including bond premium of $5.5 million
Debt Instrument [Line Items]
Long-term debt, gross			$ 0	705,500,000
Interest Rate			5.00%
Bond premium			$ 5,500,000
Senior Notes | Old 2027 Notes, including bond premium of $9.1 million
Debt Instrument [Line Items]
Long-term debt, gross			$ 0	509,100,000
Interest Rate			5.375%
Bond premium			$ 9,100,000
Senior Notes | 2024 Notes, including bond discount of $0.8 million
Debt Instrument [Line Items]
Long-term debt, gross			$ 599,200,000	0
Interest Rate			2.90%
Bond discount			$ 800,000
Senior Notes | 2029 Notes, including bond discount of $1.8 million
Debt Instrument [Line Items]
Long-term debt, gross			$ 598,200,000	$ 0
Interest Rate			3.45%
Bond discount			$ 1,800,000
LIBOR | US Revolver | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate			1.20%
LIBOR | GBP Revolver | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate			1.20%
LIBOR | Term Loan | 2023 Term Loan
Debt Instrument [Line Items]
Basis spread on variable rate			1.35%
LIBOR | Term Loan | 2025 Term Loan
Debt Instrument [Line Items]
Basis spread on variable rate			1.65%
EURIBOR | EUR Revolver | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate			1.20%
USD | LIBOR
Debt Instrument [Line Items]
Interest Rate			1.80%
GBP | LIBOR
Debt Instrument [Line Items]
Interest Rate			0.71%

XML

Goodwill, Intangible and Other Long-Lived Assets - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 455,100,000	$ 455,100,000
Impairment of goodwill	0	0
Impairment of intangible assets	0	0
Amortization expense for acquired intangible assets	$ 39,900,000	$ 30,600,000	$ 25,100,000

XML

Fair Value of Financial Instruments and Hedging Activities - Narrative (Details) € in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2019 EUR (€)	Sep. 03, 2019 USD ($)	Aug. 31, 2018 USD ($)	Mar. 29, 2018 USD ($)
Debt Instrument [Line Items]
Impairment losses	$ 700,000	$ 0	$ 58,000,000.0
Loss on cross-currency contracts	7,500,000
Derivative liabilities	11,400,000	0
Derivative assets	3,500,000	0
$1.7 Billion Revolving Credit Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	1,700,000,000					$ 1,700,000,000	$ 1,700,000,000
Cross-Currency Swaps
Debt Instrument [Line Items]
Loss on cross-currency contracts	7,500,000	$ 0
Term Loan | Interest Rate Swaps
Debt Instrument [Line Items]
Derivative contracts					$ 300,000,000.0
Fixed interest rate					1.19%
Maturing January 2020 | Term Loan | Cross-Currency Swaps
Debt Instrument [Line Items]
Derivative contracts	446,800,000			€ 401.1
Fair value liability	3,700,000
Maturing March 2023 | Term Loan | Cross-Currency Swaps
Debt Instrument [Line Items]
Derivative contracts	500,000,000.0			€ 450.7
Fair value liability	$ 7,700,000

XML

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

Investment in Real Estate

Acquisition of Properties

Investment in real estate consist of land, buildings, improvements and integral equipment utilized in our data center operations. We expect most acquisitions to be an acquisition of assets rather than a business combination as our typical acquisitions consist of properties whereby substantially all the fair value of gross assets acquired is concentrated in a single asset set (land, building and in-place leases), which are treated as asset acquisitions. See Business Combinations and Asset Acquisitions herein.

Business Combinations and Asset Acquisitions

We evaluate whether an acquisition is a business combination or an asset acquisition by determining whether the set of assets is a business.

Asset Acquisitions

When substantially all of the fair value of gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets, the transaction is accounted for as an asset acquisition. Asset acquisitions are recorded at the cumulative acquisition costs and allocated to the assets acquired and liabilities assumed on a relative fair value basis. The Company allocates the purchase price of real estate to identifiable tangible assets such as land, building, land improvements and tenant improvements acquired based on their fair value. In estimating the fair value of each component, management considers appraisals, replacement cost, its own analysis of recently acquired and existing comparable properties, market rental data and other related information. Transaction costs associated with asset acquisitions are capitalized.

Business Combinations

When substantially all of the fair value is not concentrated in a group of similar identifiable assets, the set of assets will generally be considered a business and the Company applies the purchase method for business combinations, where all tangible and identifiable intangible assets acquired and all liabilities assumed are recorded at fair value. Any excess purchase price is recorded as goodwill. Transaction costs associated with business combinations are expensed as incurred.

The following discussion applies to our initial determination of fair value and the resulting subsequent accounting which is generally applicable to both asset acquisitions and business combinations.

The fair value of any tangible real estate assets acquired is determined by valuing the building as if it were vacant, and the fair value is then allocated to land, buildings, equipment and improvements based on available information including replacement cost, appraisal or using net operating income capitalization rates, discounted cash flow analysis or similar fair value models.

We determine in-place lease values based on our evaluation of the specific characteristics of each tenant’s lease agreement and by applying a fair value model. The estimates of fair value of in-place leases include an estimate of carrying costs during the expected lease up periods considering current market conditions. In estimating fair value of in-place leases, we consider items such as real estate taxes, insurance, leasing commissions, tenant improvements and other operating expenses to execute similar leases as well as projected rental revenue and carrying costs during the expected lease up period. We amortize the value of in-place leases acquired to expense over the approximate weighted average remaining term of the leases, adjusted for projected tenant turnover, on a composite basis.

We determine the value of above-market and below-market in-place leases for acquired properties based on the present value (using an interest rate that reflects the risks associated with the leases acquired) of the difference between (1) the contractual amounts to be paid pursuant to the in-place leases and (2) estimates of current market lease rates for the corresponding in-place leases, measured over a period equal to (i) the remaining non-cancellable lease term for above-market leases, or (ii) the remaining non-cancellable lease term plus any renewal options that we consider are reasonably certain that a lessee will execute such renewal option when a lease commences. We record the fair value of above-market and below-market leases as intangible assets or liabilities, and amortize them as an adjustment to revenue over the lease term. 

We determine the fair value of assumed debt by calculating the net present value of the scheduled debt service payments using current market-based terms for interest rates for debt with similar terms that management believes we could obtain on similar structures and maturities. Any difference between the fair value and stated value of the assumed debt is recorded as a discount or premium and amortized over the remaining term of the loan.

In a business combination, we retain the previous lease classification unless there is a lease modification and that modification is not accounted for as a separate new lease. We elected to apply the short-term lease measurement and recognition exemption available under the new accounting standard for leases (discussed below in Note 4, Recently Issued Accounting Standards) to leases that have a remaining lease term of 12 months or less at the acquisition date, and accordingly, do not recognize an intangible asset if the terms of an operating lease are favorable relative to market terms, or a liability if the terms are unfavorable relative to market terms. Leasehold improvements are amortized over the shorter of the useful life of the assets and the remaining lease term at the date of acquisition.

Capitalization of Costs

We capitalize costs directly related to the development, pre-development or improvement of our investment in real estate, referred to as capital projects and other activities included within this paragraph. Costs associated with our capital projects are capitalized as incurred. If the project is abandoned, these costs are expensed during the period in which the project is abandoned. Costs considered for capitalization include, but are not limited to, construction costs, interest, real estate taxes, insurance and utilities, if appropriate. We capitalize indirect costs such as personnel, office and administrative expenses that are directly related to our development projects based on an estimate of the time spent on the construction and development activities. These costs are capitalized only during the period in which activities necessary to ready an asset for its intended use are in progress and such costs are incremental and identifiable to a specific activity to get the asset ready for its intended use. We determine when the capitalization period begins and ends through communication with project and other managers responsible for the tracking and oversight of individual projects. In the event that the activities to ready the asset for its intended use are suspended, the capitalization period will cease until such activities are resumed. In addition, we capitalize incremental initial direct costs incurred for successful origination of new leases which include internal and external leasing commissions. Interest expense is capitalized based on actual qualifying capital expenditures from the period when development commences until the asset is ready for its intended use, at the weighted average borrowing rate during the period. These costs are included in investment in real estate and depreciated over the estimated useful life of the related assets.

Costs incurred for maintaining and repairing our properties, which do not extend their useful lives, are expensed as incurred.

Impairment Losses

When events or circumstances indicate that the carrying amount of a real estate investment may not be recoverable, we review the carrying value of the asset. When such impairment indicators exist, we review an estimate of the undiscounted future cash flows expected to result from the use of the real estate investment and proceeds from its eventual disposition and compare such amount to the carrying amount of the real estate investment. If our undiscounted cash flows indicate that we are unable to recover the carrying value of the real estate investment, an impairment loss is recognized. An impairment loss is measured as the amount by which the real estate investment's carrying value exceeds its estimated fair value. We recognized an impairment loss of $0.7 million for the year ended December 31, 2019 on our South Bend - Monroe facility. We did not record any impairment losses for the year ended December 31, 2018. We recognized impairment losses of $58.0 million for the year ended December 31, 2017 related to our leased data center facilities in the Connecticut markets and our leased facility in Singapore.

Cash and Cash Equivalents and Restricted Cash

Cash and cash equivalents include all non-restricted cash held in financial institutions and other non-restricted highly liquid short-term investments with original maturities of three months or less. Restricted cash includes cash equivalents restricted by contract or regulation, including letters of credit.

Equity Investments

We hold investments in various joint ventures where the Company evaluates its ability to influence the operating or financial decisions of the investee in applying the appropriate method of accounting for such investments. Influence tends to be more effective as the investor's percent of ownership in the voting rights of the investee increases. Our equity investments represent less than 20% of the voting rights of the investees and we do not exercise influence over the investee's operating and financial decisions. Accordingly, we do not account for our equity investments using the equity method accounting. For further information about our equity investments, see Note 9, Equity Investments.

Our investment in GDS Holdings Limited (“GDS”) is classified as “available for sale” and is carried at fair value. Changes in the fair value are reported as a component of net income (loss) in Gain (loss) on marketable equity investments.

Our other equity investment is carried at cost because we do not exercise influence over the operating and financial decisions of the venture and there is no readily determinable fair value and our investment is recorded at cost less impairment, if any. Dividends paid from operating profits are reported as a component of net income (loss), while other dividends are reported as a return of capital.

Goodwill

We evaluate goodwill for possible impairment at least annually or upon the occurrence of events or circumstances that indicate that they would more likely than not reduce the fair value of a reporting unit below its carrying amount.

For our annual impairment evaluation, we have the option of performing a qualitative or quantitative goodwill impairment analysis. A qualitative analysis, step zero, analyzes the macro-economic environment in which we operate for any significant changes such as deterioration in the market that the Company operates or overall financial performance such as declining cash flows. Also, entity specific changes are analyzed such as change in management, strategy or composition of reporting unit. This assessment of qualitative factors serves as a basis for determining whether it is necessary to perform the step one test. A quantitative analysis, step one, requires the Company to estimate the fair value of the reporting unit and compare the fair value to the carrying value to identify whether the value of the recorded goodwill is impaired. Changes in certain assumptions could have a significant impact on the impairment test for goodwill under step one. The most critical assumptions are projected future growth rates, operating margins, capital expenditures, tax rates, terminal values and discount rates. These assumptions are subject to change as our long-term plans and strategies are updated each year.

During the fourth quarters of 2019, 2018 and 2017, we performed a qualitative evaluation and determined that the fair value of the reporting unit is substantially in excess of the carrying amount and therefore determined that further quantitative impairment testing was not necessary.

Rent and Other Receivables

Receivables consist principally of rent receivables from customers and straight-line rent receivables with estimated credit losses recorded as an allowance for doubtful accounts. Straight-line rent receivable, net was $156.8 million and $128.7 million at December 31, 2019 and 2018, respectively. The allowance for doubtful accounts is estimated based upon historic patterns of credit losses for aged receivables as well as specific provisions for certain identifiable, potentially uncollectible balances.

Deferred Revenue and Prepaid Rents

Deferred revenue is recorded when a customer makes a contractual payment in excess of revenues recognized in accordance with GAAP. Prepaid rent liability is recorded when a customer makes an advance payment or they are contractually obligated to pay any amounts in advance of the associated lease or service period.

Finance Lease Liabilities

Finance lease liabilities represent leases of land and real estate we classified as finance leases. The Company adopted Accounting Standards Codification (“ASC”) 842, Leases (“ASC 842”), the new accounting standard for leases, effective January 1, 2019 using the modified retrospective approach and prior periods were not restated. Prior to the adoption of ASC 842, the Company had lease

arrangements where we were involved in the construction of structural improvements to develop buildings into data centers. We substantially bore all the construction period risk, such as managing or funding construction, we were deemed to be the accounting owner of the leased property and, we were required to record at fair value the property and associated liability on our Consolidated Balance Sheets. These transactions did not qualify for sale-leaseback accounting due to our continued involvement in these data center operations. Following the adoption of ASC 842, these leases are classified as operating leases and the liability is included in the Consolidated Balance Sheets under Operating lease liabilities, see Note 6, Leases - As a Lessee, for further information.

Revenue Recognition

Our revenue consists of lease revenue and revenue from contracts with customers.

Lease Revenue:

Our leasing revenue primarily consists of colocation rent, metered power reimbursements and interconnection revenue and is accounted for under ASC 842, Leases. We generally are not entitled to reimbursements for rental expenses including real estate taxes, insurance or other common area operating expenses.

a. Colocation Rent Revenue

Colocation rent revenues, including interconnection revenue, are fixed minimum lease payments generally billed monthly in advance based on the contracted power or leased space. Some contracts may provide initial free rent periods and rents that escalate over the term of the contract. If rents escalate without the lessee gaining access to or control over additional leased power or space at the beginning of the lease term, the rental payments are recognized as revenue on a straight-line basis over the term of the lease. If rents escalate because the lessee gains access to and control over additional power and or leased space, revenue is recognized in proportion to the additional power or space in the periods that the lessee has control over the use of the additional power or space. The excess of revenue recognized over amounts contractually due is recognized as a straight-line receivable, which is included in rent and other receivables in our Consolidated Balance Sheet. Some of our leases are structured on a gross basis in which the customer pays a fixed amount for colocation space and power. The revenue for these types of leases is recorded in colocation rent revenue.

b. Metered Power Reimbursements Revenue

Some of our leases provide that the customer is separately billed for power based upon actual or estimated metered usage at rates then in effect. Metered power reimbursement revenue is variable lease payments generally billed one month in arrears, and an estimate of this revenue is accrued in the month that the associated power is provided and recorded in metered power reimbursements revenue.

Revenue from Contracts with Customers

Managed services, equipment sales, installations and other services are recognized under ASC 606.

Equipment sold by us generally consists of servers, switches, networking equipment, cable infrastructure and cabinets. Revenue is recognized at a point-in-time when control of the equipment transfers to the customer from the Company, which generally occurs upon delivery to the customer.

Managed services include providing of a full-service managed data center, monitoring customer computer equipment, managing backups and storage, utilization reporting and other related ancillary information technology services. Management service contracts generally range from one to five years.

Installation services include mounting, wiring, and testing of customer owned equipment. The installation period is typically short term in duration, and accordingly, revenue from the installation of customer equipment is recognized at a point-in-time once the installation is complete and the performance obligation is satisfied. Other services generally include installation of customer equipment, performing customer system re-boots, server cabinet and cage management, power monitoring, shipping and receiving, resolving technical issues, and other services requested by the customer. Other service revenue is measured based on the consideration specified in the contract and recognized over time as we satisfy the performance obligation.

We adopted the practical expedient in ASC 606 that allows the Company to not disclose information about remaining performance obligations that have original expected durations of one year or less, the amount of the transaction price allocated to the remaining performance obligations and when we expect to recognize that amount as revenue for the year. We have also adopted the “as invoiced” practical expedient, whereby the Company recognizes revenue in the amount that directly corresponds to the amount of value transferred to the customer.

Depreciation and Amortization Expense

Depreciation expense is recognized over the estimated useful lives of real estate applying the straight-line method. The useful life of leased real estate and leasehold improvements is the lesser of the economic useful life of the asset or the term of the lease, including optional renewal periods if renewal is reasonably certain.

Amortization expense is recognized over the estimated useful lives of finite-lived intangibles. Finite-lived intangibles include trademarks, customer relationships, favorable leasehold interests, in-place leases, trade names and deferred leasing costs. See Note 10, Goodwill, Intangible and Other Long-Lived Assets, for details.

Foreign Currency Translation and Transactions

The financial position of foreign subsidiaries is translated at the exchange rates in effect at the end of the period, while revenues and expenses are translated at average exchange rates during the period. Gains or losses from translation of foreign operations where the local currency is the functional currency are included as components of other comprehensive income (loss). Gains or losses from foreign currency transactions are included in determining net income (loss).

Stock-Based Compensation

We have a stock-based incentive award plan for our employees and directors. Stock-based compensation expense associated with these awards is recognized in general and administrative expenses, property operating expenses and sales and marketing expenses in our Consolidated Statements of Operations. We measure stock-based compensation at the estimated fair value on the grant date and recognize the amortization of stock-based compensation expense over the requisite service period. Fair value is determined based on assumptions related to volatility, interest rates, market and company performance.

Fair Value Measurements

Fair value measurements are utilized in accounting for business combinations, asset acquisitions, testing of goodwill and other long-lived assets for impairment, recording unrealized gain on available-for-sale securities, derivatives and related disclosures. Fair value of financial and non-financial assets and liabilities is defined as an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. The three-tier hierarchy that prioritizes certain inputs used in the methodologies of measuring fair value for asset and liabilities, is as follows:

Level 1—Observable inputs for identical instruments such as quoted market prices;

Level 2—Inputs include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (i.e., interest rates, yield curves, etc.), and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs); and

Level 3—Unobservable inputs that reflect our determination of assumptions that market participants would use in pricing the asset or liability. These inputs are developed based on the best information available, including our own data.

Derivative Instruments

We primarily hedge our foreign currency risk by borrowing in the currencies in which we invest. We may use derivative financial instruments, such as cross-currency swaps to manage foreign currency exchange rate risk related to both our foreign investments and the related earnings. In addition, we occasionally use interest rate swap contracts to manage interest rate risk and limit the impact of future interest rate changes on earnings and cash flows, primarily related to variable-rate debt.

Derivative instruments are measured at fair value and recorded as other assets or other liabilities. The accounting for gains and losses resulting from changes in fair value is dependent on the use of the derivative and whether it is designated and qualifies for hedge accounting.

Designated Derivatives. We may choose to designate our derivative financial instruments, generally cross-currency swaps as net investment hedges in foreign operations. At inception of the transaction, we designate the derivative financial instrument as a hedge of a specific underlying exposure, including the risk management objective and the strategy for undertaking the hedge transaction. We formally assess both at inception and at least quarterly thereafter, the effectiveness of our hedging transactions. Due to the high degree of effectiveness between the hedging instruments and the underlying exposures hedged, fluctuations in the value of the derivative financial instruments will generally be offset by changes in the cash flows or fair values of the underlying exposures being hedged.

In addition to the net investment hedges described above, we may issue debt in a currency that is not the same functional currency of the borrowing entity to hedge our international investments. We designate the debt and related accrued interest as a net investment hedge to offset the translation and economic exposures related to our international investments. If the debt and related accrued interest exceeds the designated amount of our international investment, the foreign currency remeasurement on the unhedged portion of the debt during the period is recognized in Foreign currency and derivative losses, net.

For cash flow hedges, such as interest rate swaps, we report the effective portion of the gain or loss as a component of other comprehensive income (loss) and reclassify it to the applicable line item in the Consolidated Statements of Operations, generally Interest expense, net over the corresponding period of the underlying hedged item. The ineffective portion of a derivative financial instrument’s change in fair value is recognized in earnings, generally Interest expense, net at the time the ineffectiveness occurred. To the extent the hedged debt related to our interest rate swaps and forwards is paid off early, we write off the remaining balance in other comprehensive income (loss) and recognize the amount in Interest expense, net in the Consolidated Statements of Operations.

Undesignated Derivatives. Derivative instruments, such as cross-currency swaps, for which hedge accounting is not applied are recorded at fair value in other assets and other liabilities and gains and losses resulting from changes in the fair value are reported in Foreign currency and derivative losses, net in the Consolidated Statements of Operations.

In addition, we may choose to not designate our interest rate swap and forward contracts. If a swap or forward contract is not designated as a hedge, the changes in fair value of these instruments is immediately recognized in earnings in Interest expense, net in the Consolidated Statements of Operations.

Segment Information

Our data centers have similar revenues and operating expenses across all geographic locations. The service offerings and delivery of services are provided in a similar manner, using the same types of facilities and similar technologies. Our chief operating decision maker, the Company's Chief Executive Officer, reviews our financial information on an aggregate basis and makes decisions about the allocations of Company resources and as a result, we have one reportable business segment.

One customer represented approximately 21% and 18% of our revenue for the years ended December 31, 2019 and 2018.

Revenues from properties were $981.3 million, $821.4 million and $672.0 million for the years ended December 31, 2019, 2018 and 2017, respectively. We had net investment in real estate of $4.7 billion and $4.3 billion, at December 31, 2019 and 2018, respectively.

Use of Estimates

Preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. These estimates and assumptions are based on management’s knowledge of current events and actions that we may undertake in the future. Significant estimates include and are related to determining lease terms and revenue recognition, the fair value for purchase price allocations for business combinations and asset acquisitions, and the useful lives of real estate and other long-lived assets. Actual results may differ from these estimates and assumptions.

Reclassifications

Certain financial information has been revised to conform to the current year presentation due to changes in the significance of the particular activity. The following items have been reclassified:

Balance Sheet as of December 31, 2018

• Straight-line rent receivable, net, ($128.7 million) is classified within rent and other receivables, net. This item was previously included in other assets.

Statement of Cash Flows for the year ended December 31, 2018

• Proceeds from revolving credit facility and proceeds from unsecured term loan are separate line items in the current presentation. These items were previously combined in proceeds from debt, net ($1,988.3 million) in the comparable prior year period. Repayments of revolving credit facility and repayments of unsecured term loan are separate line items in the current presentation. These items were previously combined in payments on debt ($1,547.4 million) in the comparable prior year period.

Statement of Cash Flows for the year ended December 31, 2017

•

Proceeds from revolving credit facility, proceeds from unsecured term loan, proceeds from senior notes, payment of debt extinguishment costs and payment of deferred financing costs are separate line items in the current presentation. These items were previously combined in proceeds from debt, net ($2,558.4 million) in the comparable prior year period. Repayments of revolving credit facility and repayments of senior notes are separate line items in the current presentation. These items were previously combined in payments on debt ($1,749.8 million) in the comparable prior year period.

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Acquisitions and Purchases of Fixed Assets

12 Months Ended

Dec. 31, 2019

Business Combinations [Abstract]

Acquisitions and Purchases of Fixed Assets

Acquisitions and Purchases of Fixed Assets

Land for future development

During the year ended December 31, 2019, the Company purchased approximately 74 acres of land for $54.7 million in Dublin, the Republic of Ireland, San Antonio, Santa Clara and Council Bluffs, Iowa. During the year ended December 31, 2018, the Company purchased approximately 182 acres of land for $182.3 million in Dallas, Frankfurt, Germany, Northern Virginia, Phoenix and Santa Clara.

Leases of real estate

The Company entered into a 999-year ground lease in September 2019 for 16 acres in Dublin, the Republic of Ireland, and purchased 9 acres of land totaling 24 acres for future development of a 6 MW data center. Construction commenced in July 2019. The Company prepaid $6.3 million of the lease payments and concluded that the present value of lease payments was equal to substantially all of the fair value of the land and classified the lease as a finance lease.

In August 2019, the Company entered into a lease for land comprising 3 acres and a building shell of approximately 51,000 square feet in London, UK for 25 years, including an option to extend for an additional 25 years. The Company immediately began development and construction of a 6 MW data center in London. We determined that the option to renew was not reasonably certain to be exercised. The fixed lease payments are £0.9 million per year and we classified the lease as an operating lease because the lease term was not for a major part of the remaining economic life of the building shell; nor did the lease qualify as a finance lease based on the other criteria under ASC 842.

In November 2019, the Company entered into a lease for land comprising 6.5 acres and a building shell of approximately 105,000 square feet in London, UK for 20 years, including an option to extend for an additional 15 years. We determined that the option to renew was not reasonably certain to be exercised. The fixed lease payments are £2.1 million per year and we classified the lease as an operating lease because the lease term was not for a major part of the remaining economic life of the building shell; nor did the lease qualify as a finance lease based on the other criteria under ASC 842.

Acquisitions of Data Centers

On August 24, 2018, the Company completed its previously announced acquisition of Zenium Topco Ltd. and certain other affiliated entities ("Zenium"). Zenium is a hyperscale data center provider in Europe with four operating data centers in London and Frankfurt, and land sites available for development in London and Frankfurt. In connection with the acquisition, and after giving effect to a post-closing working capital adjustment, the Company paid aggregate cash consideration of approximately $462.8 million, net of approximately $12.7 million of cash acquired, and assumed outstanding indebtedness of approximately $86.3 million. In the fourth quarter of 2018, the Company paid approximately $1.0 million related to the post-closing working capital adjustment which is included above in the aggregate cash consideration. The Company financed the acquisition with proceeds from the $300.0 million delayed draw term loan included in the 2023 Term Loan and $174.5 million of borrowings under the $1.7 Billion Revolving Credit Facility (each as defined below).

The Company evaluated the acquisition and determined that substantially all of the fair value of the gross assets was concentrated in a group of similar identifiable assets and accounted for the transaction as an acquisition of assets.

The consolidated financial statements of CyrusOne Inc. include the operating results of Zenium since the acquisition date, which was August 24, 2018. The following table summarizes the estimated fair values of all assets acquired at the date of acquisition:

IN MILLIONS
Investment in real estate	$	597.3
Cash and cash equivalents	12.7
Rent and other receivables	9.0
Intangible assets:
Trade name	1.8
Leasehold interest	1.7
In-place leases	61.5
Other assets	1.1
Accounts payable	(22.3		)
Deferred revenue	(3.3		)
Capital lease obligations	(25.0		)
Deferred tax liability	(72.7		)
Debt	(86.3		)
Net assets acquired attributable to CyrusOne Inc.	$	475.5
Cash acquired	(12.7		)
Net cash paid at acquisition	$	462.8

Real Estate Investments and Intangibles and Related Depreciation and Amortization

As of December 31, 2019 and 2018, major components of our real estate investments and intangibles and related accumulated depreciation and amortization are as follows (in millions):

	December 31, 2019															December 31, 2018
	Investment in Real Estate						Intangibles									Investment in Real Estate						Intangibles
	Buildings and Improvements			Equipment			Customer Relationships			In-Place Leases			Other Contractual			Buildings and Improvements			Equipment			Customer Relationships			In-Place Leases			Other Contractual
Cost	$	1,761.4		$	3,028.2		$	247.1		$	137.1		$	19.4		$	1,677.5		$	2,630.2		$	247.1		$	136.0		$	19.5
Less: accumulated depreciation and amortization	(545.1		)	(834.1		)	(151.1		)	(46.7		)	(9.7		)	(481.8		)	(572.7		)	(137.9		)	(21.1		)	(7.9		)
Net	$	1,216.3		$	2,194.1		$	96.0		$	90.4		$	9.7		$	1,195.7		$	2,057.5		$	109.2		$	114.9		$	11.6

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Acquisitions and Purchases of Fixed Assets (Tables)

12 Months Ended

Dec. 31, 2019

Business Combinations [Abstract]

Schedule of Assets Acquired and Liabilities Assumed

The consolidated financial statements of CyrusOne Inc. include the operating results of Zenium since the acquisition date, which was August 24, 2018. The following table summarizes the estimated fair values of all assets acquired at the date of acquisition:

IN MILLIONS
Investment in real estate	$	597.3
Cash and cash equivalents	12.7
Rent and other receivables	9.0
Intangible assets:
Trade name	1.8
Leasehold interest	1.7
In-place leases	61.5
Other assets	1.1
Accounts payable	(22.3		)
Deferred revenue	(3.3		)
Capital lease obligations	(25.0		)
Deferred tax liability	(72.7		)
Debt	(86.3		)
Net assets acquired attributable to CyrusOne Inc.	$	475.5
Cash acquired	(12.7		)
Net cash paid at acquisition	$	462.8

Schedule of Gross Investment in Real Estate

As of December 31, 2019 and 2018, major components of our real estate investments and intangibles and related accumulated depreciation and amortization are as follows (in millions):

	December 31, 2019															December 31, 2018
	Investment in Real Estate						Intangibles									Investment in Real Estate						Intangibles
	Buildings and Improvements			Equipment			Customer Relationships			In-Place Leases			Other Contractual			Buildings and Improvements			Equipment			Customer Relationships			In-Place Leases			Other Contractual
Cost	$	1,761.4		$	3,028.2		$	247.1		$	137.1		$	19.4		$	1,677.5		$	2,630.2		$	247.1		$	136.0		$	19.5
Less: accumulated depreciation and amortization	(545.1		)	(834.1		)	(151.1		)	(46.7		)	(9.7		)	(481.8		)	(572.7		)	(137.9		)	(21.1		)	(7.9		)
Net	$	1,216.3		$	2,194.1		$	96.0		$	90.4		$	9.7		$	1,195.7		$	2,057.5		$	109.2		$	114.9		$	11.6

A schedule of our gross investment in real estate follows:

IN MILLIONS
As of December 31,		2019						2018
	Acquisition Date	Land		Building and Improvements		Equipment		Land		Building and Improvements		Equipment
Austin II	2011	$	2.0	$	23.5	$	13.3	$	2.0	$	23.4	$	8.7
Austin III	2015	3.3		12.6		64.0		3.3		11.7		47.0
Chicago - Aurora I	2016	2.4		32.4		136.3		2.4		32.4		132.9
Chicago - Aurora II	2016	2.6		22.9		70.3		2.6		22.6		68.6
Chicago - Aurora Tower	2018	—		6.4		0.9		—		4.9		0.4
Chicago - Lombard	2008	0.7		4.7		8.1		0.7		4.7		8.1
Cincinnati - 7th Street(1)	1999	0.9		114.1		37.2		0.9		114.1		37.4
Cincinnati - Blue Ash(2)	2009	—		0.7		0.2		—		0.7		0.2
Cincinnati - Goldcoast	2007	—		—		—		0.2		4.0		0.1
Cincinnati - Hamilton(2)	2007	—		43.7		7.8		—		43.7		7.9
Cincinnati - Mason	2004	—		20.3		1.7		—		20.3		1.7
Cincinnati - North Cincinnati	2008	0.9		77.8		16.0		0.9		77.9		12.4
Dallas - Allen	2017	6.5		15.0		39.5		—		—		—
Dallas - Carrollton	2012	16.1		63.8		323.3		16.1		62.2		272.5
Dallas - Lewisville(2)	2010	—		58.1		41.1		—		76.8		39.6
Florence	2005	2.2		42.0		8.7		2.2		42.0		8.4
Frankfurt I	2018	4.0		36.0		123.7		4.1		35.7		124.9
Frankfurt II	2018	7.0		135.1		93.6		7.1		89.8		53.9
Houston - Galleria(3)	2010	—		71.0		24.4		—		71.0		20.2
Houston - Houston West I	2010	1.4		85.2		51.6		1.4		85.2		51.1
Houston - Houston West II	2013	2.7		22.8		52.0		2.7		22.9		50.9
Houston - Houston West III	2013	7.2		18.1		32.3		7.2		18.0		31.4
London - Great Bridgewater(4)	2011	—		—		1.3		—		26.8		1.2
London I(2)	2018	—		44.3		46.4		—		34.1		26.3
London II(2)	2018	—		42.8		93.3		—		25.2		74.8
Northern Virginia - Sterling I	2013	6.9		20.2		62.2		6.9		20.2		60.4
Northern Virginia - Sterling II	2013	—		28.8		112.4		—		28.8		112.4
Northern Virginia - Sterling III	2017	—		22.3		61.8		—		22.2		61.3
Northern Virginia - Sterling IV	2016	4.6		20.1		78.1		4.6		20.0		76.0
Northern Virginia - Sterling V	2016	14.5		81.7		303.7		14.5		80.8		295.8
Northern Virginia - Sterling VI	2018	9.7		60.2		196.9		—		—		77.5
Northern Virginia - Sterling VIII	2018	9.1		7.0		28.0		—		—		—
Norwalk I(4)	2015	—		1.7		10.6		—		13.6		10.1
Phoenix - Chandler I	2011	10.5		58.3		71.5		10.5		58.3		68.7
Phoenix - Chandler II	2014	—		16.2		39.8		—		16.2		39.4
Phoenix - Chandler III	2016	—		11.4		51.3		—		11.4		50.8
Phoenix - Chandler IV	2017	—		18.4		44.3		—		18.4		43.3
Phoenix - Chandler V	2017	—		12.1		54.6		—		10.7		53.4
Phoenix - Chandler VI	2016	2.4		23.3		101.7		2.4		23.3		100.3
Phoenix - Chandler VII	2016	4.2		0.8		0.4		—		—		—
Raleigh-Durham I	2017	2.1		79.8		80.0		2.1		79.8		75.4
San Antonio I	2011	4.6		31.7		36.3		4.6		31.7		35.3
San Antonio II	2013	7.0		30.3		61.0		7.0		30.3		60.8
San Antonio III	2017	—		40.2		99.5		—		40.2		99.0

IN MILLIONS
As of December 31,		2019						2018
		Land		Building and Improvements		Equipment		Land		Building and Improvements		Equipment
San Antonio IV	2017	$	—	$	56.3	$	50.6	$	—	$	42.1	$	48.2
Santa Clara II	2019	—		2.7		—		—		—		—
Singapore - Inter Business Park(4)	2011	—		—		—		—		—		—
Somerset I	2017	12.1		132.1		101.8		12.1		125.8		91.0
South Bend - Crescent(2)	2008	—		—		—		—		1.7		0.2
South Bend - Monroe	2007	—		1.9		0.3		—		2.5		0.4
Stamford - Omega(4)	2015	—		0.1		0.8		—		2.6		0.7
Stamford - Riverbend(4)	2015	—		0.9		8.6		—		2.9		7.8
Totowa - Commerce(4)	2015	—		0.4		1.7		—		4.1		1.7
Totowa - Madison(4)	2015	—		6.1		60.1		—		28.5		57.7
Wappingers Falls I(4)	2015	—		3.1		23.2		—		11.3		22.0
Total		$	147.6	$	1,761.4	$	3,028.2	$	118.5	$	1,677.5	$	2,630.2
Land held for future development		$	206.0	$	—	$	—	$	176.4	$	—	$	—

1) The information provided for the Cincinnati - 7th Street property includes data for two facilities, one of which we lease and one of which we own.

2) Indicates properties in which we hold a leasehold interest in the building shell and land. All data center infrastructure has been constructed by us and is owned by us.

3) Indicates properties in which we hold a leasehold interest in land. All data center infrastructure has been constructed by us and is owned by us.

4) Indicates properties in which we hold a leasehold interest in the building shell, land, and all data center infrastructure.

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Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

The accompanying financial statements are prepared on a consolidated basis. In addition, the accompanying financial statements have been prepared in accordance with generally accepted accounting principles in the U.S. (GAAP) and include the accounts of the Company, as well as all wholly-owned subsidiaries and any consolidated variable interest entities. All intercompany transactions and balances have been eliminated in consolidation.

Investments in Real Estate

Investment in Real Estate

Acquisition of Properties

Investment in real estate consist of land, buildings, improvements and integral equipment utilized in our data center operations. We expect most acquisitions to be an acquisition of assets rather than a business combination as our typical acquisitions consist of properties whereby substantially all the fair value of gross assets acquired is concentrated in a single asset set (land, building and in-place leases), which are treated as asset acquisitions. See Business Combinations and Asset Acquisitions herein.

Business Combinations and Asset Acquisitions

We evaluate whether an acquisition is a business combination or an asset acquisition by determining whether the set of assets is a business.

Asset Acquisitions

When substantially all of the fair value of gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets, the transaction is accounted for as an asset acquisition. Asset acquisitions are recorded at the cumulative acquisition costs and allocated to the assets acquired and liabilities assumed on a relative fair value basis. The Company allocates the purchase price of real estate to identifiable tangible assets such as land, building, land improvements and tenant improvements acquired based on their fair value. In estimating the fair value of each component, management considers appraisals, replacement cost, its own analysis of recently acquired and existing comparable properties, market rental data and other related information. Transaction costs associated with asset acquisitions are capitalized.

Business Combinations

When substantially all of the fair value is not concentrated in a group of similar identifiable assets, the set of assets will generally be considered a business and the Company applies the purchase method for business combinations, where all tangible and identifiable intangible assets acquired and all liabilities assumed are recorded at fair value. Any excess purchase price is recorded as goodwill. Transaction costs associated with business combinations are expensed as incurred.

The following discussion applies to our initial determination of fair value and the resulting subsequent accounting which is generally applicable to both asset acquisitions and business combinations.

The fair value of any tangible real estate assets acquired is determined by valuing the building as if it were vacant, and the fair value is then allocated to land, buildings, equipment and improvements based on available information including replacement cost, appraisal or using net operating income capitalization rates, discounted cash flow analysis or similar fair value models.

We determine in-place lease values based on our evaluation of the specific characteristics of each tenant’s lease agreement and by applying a fair value model. The estimates of fair value of in-place leases include an estimate of carrying costs during the expected lease up periods considering current market conditions. In estimating fair value of in-place leases, we consider items such as real estate taxes, insurance, leasing commissions, tenant improvements and other operating expenses to execute similar leases as well as projected rental revenue and carrying costs during the expected lease up period. We amortize the value of in-place leases acquired to expense over the approximate weighted average remaining term of the leases, adjusted for projected tenant turnover, on a composite basis.

We determine the value of above-market and below-market in-place leases for acquired properties based on the present value (using an interest rate that reflects the risks associated with the leases acquired) of the difference between (1) the contractual amounts to be paid pursuant to the in-place leases and (2) estimates of current market lease rates for the corresponding in-place leases, measured over a period equal to (i) the remaining non-cancellable lease term for above-market leases, or (ii) the remaining non-cancellable lease term plus any renewal options that we consider are reasonably certain that a lessee will execute such renewal option when a lease commences. We record the fair value of above-market and below-market leases as intangible assets or liabilities, and amortize them as an adjustment to revenue over the lease term. 

We determine the fair value of assumed debt by calculating the net present value of the scheduled debt service payments using current market-based terms for interest rates for debt with similar terms that management believes we could obtain on similar structures and maturities. Any difference between the fair value and stated value of the assumed debt is recorded as a discount or premium and amortized over the remaining term of the loan.

In a business combination, we retain the previous lease classification unless there is a lease modification and that modification is not accounted for as a separate new lease. We elected to apply the short-term lease measurement and recognition exemption available under the new accounting standard for leases (discussed below in Note 4, Recently Issued Accounting Standards) to leases that have a remaining lease term of 12 months or less at the acquisition date, and accordingly, do not recognize an intangible asset if the terms of an operating lease are favorable relative to market terms, or a liability if the terms are unfavorable relative to market terms. Leasehold improvements are amortized over the shorter of the useful life of the assets and the remaining lease term at the date of acquisition.

Capitalization of Costs

We capitalize costs directly related to the development, pre-development or improvement of our investment in real estate, referred to as capital projects and other activities included within this paragraph. Costs associated with our capital projects are capitalized as incurred. If the project is abandoned, these costs are expensed during the period in which the project is abandoned. Costs considered for capitalization include, but are not limited to, construction costs, interest, real estate taxes, insurance and utilities, if appropriate. We capitalize indirect costs such as personnel, office and administrative expenses that are directly related to our development projects based on an estimate of the time spent on the construction and development activities. These costs are capitalized only during the period in which activities necessary to ready an asset for its intended use are in progress and such costs are incremental and identifiable to a specific activity to get the asset ready for its intended use. We determine when the capitalization period begins and ends through communication with project and other managers responsible for the tracking and oversight of individual projects. In the event that the activities to ready the asset for its intended use are suspended, the capitalization period will cease until such activities are resumed. In addition, we capitalize incremental initial direct costs incurred for successful origination of new leases which include internal and external leasing commissions. Interest expense is capitalized based on actual qualifying capital expenditures from the period when development commences until the asset is ready for its intended use, at the weighted average borrowing rate during the period. These costs are included in investment in real estate and depreciated over the estimated useful life of the related assets.

Costs incurred for maintaining and repairing our properties, which do not extend their useful lives, are expensed as incurred.

Impairment Losses

When events or circumstances indicate that the carrying amount of a real estate investment may not be recoverable, we review the carrying value of the asset. When such impairment indicators exist, we review an estimate of the undiscounted future cash flows expected to result from the use of the real estate investment and proceeds from its eventual disposition and compare such amount to the carrying amount of the real estate investment. If our undiscounted cash flows indicate that we are unable to recover the carrying value of the real estate investment, an impairment loss is recognized. An impairment loss is measured as the amount by which the real estate investment's carrying value exceeds its estimated fair value.

Business Combinations and Asset Acquisitions

Business Combinations and Asset Acquisitions

We evaluate whether an acquisition is a business combination or an asset acquisition by determining whether the set of assets is a business.

Asset Acquisitions

When substantially all of the fair value of gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets, the transaction is accounted for as an asset acquisition. Asset acquisitions are recorded at the cumulative acquisition costs and allocated to the assets acquired and liabilities assumed on a relative fair value basis. The Company allocates the purchase price of real estate to identifiable tangible assets such as land, building, land improvements and tenant improvements acquired based on their fair value. In estimating the fair value of each component, management considers appraisals, replacement cost, its own analysis of recently acquired and existing comparable properties, market rental data and other related information. Transaction costs associated with asset acquisitions are capitalized.

Business Combinations

When substantially all of the fair value is not concentrated in a group of similar identifiable assets, the set of assets will generally be considered a business and the Company applies the purchase method for business combinations, where all tangible and identifiable intangible assets acquired and all liabilities assumed are recorded at fair value. Any excess purchase price is recorded as goodwill. Transaction costs associated with business combinations are expensed as incurred.

The following discussion applies to our initial determination of fair value and the resulting subsequent accounting which is generally applicable to both asset acquisitions and business combinations.

The fair value of any tangible real estate assets acquired is determined by valuing the building as if it were vacant, and the fair value is then allocated to land, buildings, equipment and improvements based on available information including replacement cost, appraisal or using net operating income capitalization rates, discounted cash flow analysis or similar fair value models.

We determine in-place lease values based on our evaluation of the specific characteristics of each tenant’s lease agreement and by applying a fair value model. The estimates of fair value of in-place leases include an estimate of carrying costs during the expected lease up periods considering current market conditions. In estimating fair value of in-place leases, we consider items such as real estate taxes, insurance, leasing commissions, tenant improvements and other operating expenses to execute similar leases as well as projected rental revenue and carrying costs during the expected lease up period. We amortize the value of in-place leases acquired to expense over the approximate weighted average remaining term of the leases, adjusted for projected tenant turnover, on a composite basis.

We determine the value of above-market and below-market in-place leases for acquired properties based on the present value (using an interest rate that reflects the risks associated with the leases acquired) of the difference between (1) the contractual amounts to be paid pursuant to the in-place leases and (2) estimates of current market lease rates for the corresponding in-place leases, measured over a period equal to (i) the remaining non-cancellable lease term for above-market leases, or (ii) the remaining non-cancellable lease term plus any renewal options that we consider are reasonably certain that a lessee will execute such renewal option when a lease commences. We record the fair value of above-market and below-market leases as intangible assets or liabilities, and amortize them as an adjustment to revenue over the lease term. 

We determine the fair value of assumed debt by calculating the net present value of the scheduled debt service payments using current market-based terms for interest rates for debt with similar terms that management believes we could obtain on similar structures and maturities. Any difference between the fair value and stated value of the assumed debt is recorded as a discount or premium and amortized over the remaining term of the loan.

Capitalization of Costs

Capitalization of Costs

We capitalize costs directly related to the development, pre-development or improvement of our investment in real estate, referred to as capital projects and other activities included within this paragraph. Costs associated with our capital projects are capitalized as incurred. If the project is abandoned, these costs are expensed during the period in which the project is abandoned. Costs considered for capitalization include, but are not limited to, construction costs, interest, real estate taxes, insurance and utilities, if appropriate. We capitalize indirect costs such as personnel, office and administrative expenses that are directly related to our development projects based on an estimate of the time spent on the construction and development activities. These costs are capitalized only during the period in which activities necessary to ready an asset for its intended use are in progress and such costs are incremental and identifiable to a specific activity to get the asset ready for its intended use. We determine when the capitalization period begins and ends through communication with project and other managers responsible for the tracking and oversight of individual projects. In the event that the activities to ready the asset for its intended use are suspended, the capitalization period will cease until such activities are resumed. In addition, we capitalize incremental initial direct costs incurred for successful origination of new leases which include internal and external leasing commissions. Interest expense is capitalized based on actual qualifying capital expenditures from the period when development commences until the asset is ready for its intended use, at the weighted average borrowing rate during the period. These costs are included in investment in real estate and depreciated over the estimated useful life of the related assets.

Costs incurred for maintaining and repairing our properties, which do not extend their useful lives, are expensed as incurred.

Impairment Losses

Impairment Losses

When events or circumstances indicate that the carrying amount of a real estate investment may not be recoverable, we review the carrying value of the asset. When such impairment indicators exist, we review an estimate of the undiscounted future cash flows expected to result from the use of the real estate investment and proceeds from its eventual disposition and compare such amount to the carrying amount of the real estate investment. If our undiscounted cash flows indicate that we are unable to recover the carrying value of the real estate investment, an impairment loss is recognized. An impairment loss is measured as the amount by which the real estate investment's carrying value exceeds its estimated fair value. 

Cash and Cash Equivalents and Restricted Cash

Cash and Cash Equivalents and Restricted Cash

Cash and cash equivalents include all non-restricted cash held in financial institutions and other non-restricted highly liquid short-term investments with original maturities of three months or less. Restricted cash includes cash equivalents restricted by contract or regulation, including letters of credit.

Equity Investments

Equity Investments

We hold investments in various joint ventures where the Company evaluates its ability to influence the operating or financial decisions of the investee in applying the appropriate method of accounting for such investments. Influence tends to be more effective as the investor's percent of ownership in the voting rights of the investee increases. Our equity investments represent less than 20% of the voting rights of the investees and we do not exercise influence over the investee's operating and financial decisions. Accordingly, we do not account for our equity investments using the equity method accounting. For further information about our equity investments, see Note 9, Equity Investments.

Our investment in GDS Holdings Limited (“GDS”) is classified as “available for sale” and is carried at fair value. Changes in the fair value are reported as a component of net income (loss) in Gain (loss) on marketable equity investments.

Our other equity investment is carried at cost because we do not exercise influence over the operating and financial decisions of the venture and there is no readily determinable fair value and our investment is recorded at cost less impairment, if any. Dividends paid from operating profits are reported as a component of net income (loss), while other dividends are reported as a return of capital.

Goodwill

Goodwill

We evaluate goodwill for possible impairment at least annually or upon the occurrence of events or circumstances that indicate that they would more likely than not reduce the fair value of a reporting unit below its carrying amount.

For our annual impairment evaluation, we have the option of performing a qualitative or quantitative goodwill impairment analysis. A qualitative analysis, step zero, analyzes the macro-economic environment in which we operate for any significant changes such as deterioration in the market that the Company operates or overall financial performance such as declining cash flows. Also, entity specific changes are analyzed such as change in management, strategy or composition of reporting unit. This assessment of qualitative factors serves as a basis for determining whether it is necessary to perform the step one test. A quantitative analysis, step one, requires the Company to estimate the fair value of the reporting unit and compare the fair value to the carrying value to identify whether the value of the recorded goodwill is impaired. Changes in certain assumptions could have a significant impact on the impairment test for goodwill under step one. The most critical assumptions are projected future growth rates, operating margins, capital expenditures, tax rates, terminal values and discount rates. These assumptions are subject to change as our long-term plans and strategies are updated each year.

During the fourth quarters of 2019, 2018 and 2017, we performed a qualitative evaluation and determined that the fair value of the reporting unit is substantially in excess of the carrying amount and therefore determined that further quantitative impairment testing was not necessary.

Rent and Other Receivables

Rent and Other Receivables

Receivables consist principally of rent receivables from customers and straight-line rent receivables with estimated credit losses recorded as an allowance for doubtful accounts. Straight-line rent receivable, net was $156.8 million and $128.7 million at December 31, 2019 and 2018, respectively. The allowance for doubtful accounts is estimated based upon historic patterns of credit losses for aged receivables as well as specific provisions for certain identifiable, potentially uncollectible balances.

Deferred Revenue and Prepaid Rents

Deferred Revenue and Prepaid Rents

Deferred revenue is recorded when a customer makes a contractual payment in excess of revenues recognized in accordance with GAAP. Prepaid rent liability is recorded when a customer makes an advance payment or they are contractually obligated to pay any amounts in advance of the associated lease or service period.

Finance Lease Liabilities

Finance Lease Liabilities

Finance lease liabilities represent leases of land and real estate we classified as finance leases. The Company adopted Accounting Standards Codification (“ASC”) 842, Leases (“ASC 842”), the new accounting standard for leases, effective January 1, 2019 using the modified retrospective approach and prior periods were not restated. Prior to the adoption of ASC 842, the Company had lease

arrangements where we were involved in the construction of structural improvements to develop buildings into data centers. We substantially bore all the construction period risk, such as managing or funding construction, we were deemed to be the accounting owner of the leased property and, we were required to record at fair value the property and associated liability on our Consolidated Balance Sheets. These transactions did not qualify for sale-leaseback accounting due to our continued involvement in these data center operations. Following the adoption of ASC 842, these leases are classified as operating leases and the liability is included in the Consolidated Balance Sheets under Operating lease liabilities, see Note 6, Leases - As a Lessee, for further information.

Revenue Recognition

Revenue Recognition

Our revenue consists of lease revenue and revenue from contracts with customers.

Lease Revenue:

Our leasing revenue primarily consists of colocation rent, metered power reimbursements and interconnection revenue and is accounted for under ASC 842, Leases. We generally are not entitled to reimbursements for rental expenses including real estate taxes, insurance or other common area operating expenses.

a. Colocation Rent Revenue

Colocation rent revenues, including interconnection revenue, are fixed minimum lease payments generally billed monthly in advance based on the contracted power or leased space. Some contracts may provide initial free rent periods and rents that escalate over the term of the contract. If rents escalate without the lessee gaining access to or control over additional leased power or space at the beginning of the lease term, the rental payments are recognized as revenue on a straight-line basis over the term of the lease. If rents escalate because the lessee gains access to and control over additional power and or leased space, revenue is recognized in proportion to the additional power or space in the periods that the lessee has control over the use of the additional power or space. The excess of revenue recognized over amounts contractually due is recognized as a straight-line receivable, which is included in rent and other receivables in our Consolidated Balance Sheet. Some of our leases are structured on a gross basis in which the customer pays a fixed amount for colocation space and power. The revenue for these types of leases is recorded in colocation rent revenue.

b. Metered Power Reimbursements Revenue

Some of our leases provide that the customer is separately billed for power based upon actual or estimated metered usage at rates then in effect. Metered power reimbursement revenue is variable lease payments generally billed one month in arrears, and an estimate of this revenue is accrued in the month that the associated power is provided and recorded in metered power reimbursements revenue.

Revenue from Contracts with Customers

Managed services, equipment sales, installations and other services are recognized under ASC 606.

Equipment sold by us generally consists of servers, switches, networking equipment, cable infrastructure and cabinets. Revenue is recognized at a point-in-time when control of the equipment transfers to the customer from the Company, which generally occurs upon delivery to the customer.

Managed services include providing of a full-service managed data center, monitoring customer computer equipment, managing backups and storage, utilization reporting and other related ancillary information technology services. Management service contracts generally range from one to five years.

Installation services include mounting, wiring, and testing of customer owned equipment. The installation period is typically short term in duration, and accordingly, revenue from the installation of customer equipment is recognized at a point-in-time once the installation is complete and the performance obligation is satisfied. Other services generally include installation of customer equipment, performing customer system re-boots, server cabinet and cage management, power monitoring, shipping and receiving, resolving technical issues, and other services requested by the customer. Other service revenue is measured based on the consideration specified in the contract and recognized over time as we satisfy the performance obligation.

We adopted the practical expedient in ASC 606 that allows the Company to not disclose information about remaining performance obligations that have original expected durations of one year or less, the amount of the transaction price allocated to the remaining performance obligations and when we expect to recognize that amount as revenue for the year. We have also adopted the “as invoiced” practical expedient, whereby the Company recognizes revenue in the amount that directly corresponds to the amount of value transferred to the customer.

Depreciation and Amortization Expense

Depreciation and Amortization Expense

Depreciation expense is recognized over the estimated useful lives of real estate applying the straight-line method. The useful life of leased real estate and leasehold improvements is the lesser of the economic useful life of the asset or the term of the lease, including optional renewal periods if renewal is reasonably certain.

Amortization expense is recognized over the estimated useful lives of finite-lived intangibles. Finite-lived intangibles include trademarks, customer relationships, favorable leasehold interests, in-place leases, trade names and deferred leasing costs.

Foreign Currency Translation and Transactions

Foreign Currency Translation and Transactions

The financial position of foreign subsidiaries is translated at the exchange rates in effect at the end of the period, while revenues and expenses are translated at average exchange rates during the period. Gains or losses from translation of foreign operations where the local currency is the functional currency are included as components of other comprehensive income (loss). Gains or losses from foreign currency transactions are included in determining net income (loss).

Stock-Based Compensation

Stock-Based Compensation

We have a stock-based incentive award plan for our employees and directors. Stock-based compensation expense associated with these awards is recognized in general and administrative expenses, property operating expenses and sales and marketing expenses in our Consolidated Statements of Operations. We measure stock-based compensation at the estimated fair value on the grant date and recognize the amortization of stock-based compensation expense over the requisite service period. Fair value is determined based on assumptions related to volatility, interest rates, market and company performance.

Fair Value Measurements

Fair Value Measurements

Fair value measurements are utilized in accounting for business combinations, asset acquisitions, testing of goodwill and other long-lived assets for impairment, recording unrealized gain on available-for-sale securities, derivatives and related disclosures. Fair value of financial and non-financial assets and liabilities is defined as an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. The three-tier hierarchy that prioritizes certain inputs used in the methodologies of measuring fair value for asset and liabilities, is as follows:

Level 1—Observable inputs for identical instruments such as quoted market prices;

Level 2—Inputs include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (i.e., interest rates, yield curves, etc.), and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs); and

Level 3—Unobservable inputs that reflect our determination of assumptions that market participants would use in pricing the asset or liability. These inputs are developed based on the best information available, including our own data.

Derivative Instruments

We primarily hedge our foreign currency risk by borrowing in the currencies in which we invest. We may use derivative financial instruments, such as cross-currency swaps to manage foreign currency exchange rate risk related to both our foreign investments and the related earnings. In addition, we occasionally use interest rate swap contracts to manage interest rate risk and limit the impact of future interest rate changes on earnings and cash flows, primarily related to variable-rate debt.

Derivative instruments are measured at fair value and recorded as other assets or other liabilities. The accounting for gains and losses resulting from changes in fair value is dependent on the use of the derivative and whether it is designated and qualifies for hedge accounting.

Designated Derivatives. We may choose to designate our derivative financial instruments, generally cross-currency swaps as net investment hedges in foreign operations. At inception of the transaction, we designate the derivative financial instrument as a hedge of a specific underlying exposure, including the risk management objective and the strategy for undertaking the hedge transaction. We formally assess both at inception and at least quarterly thereafter, the effectiveness of our hedging transactions. Due to the high degree of effectiveness between the hedging instruments and the underlying exposures hedged, fluctuations in the value of the derivative financial instruments will generally be offset by changes in the cash flows or fair values of the underlying exposures being hedged.

In addition to the net investment hedges described above, we may issue debt in a currency that is not the same functional currency of the borrowing entity to hedge our international investments. We designate the debt and related accrued interest as a net investment hedge to offset the translation and economic exposures related to our international investments. If the debt and related accrued interest exceeds the designated amount of our international investment, the foreign currency remeasurement on the unhedged portion of the debt during the period is recognized in Foreign currency and derivative losses, net.

For cash flow hedges, such as interest rate swaps, we report the effective portion of the gain or loss as a component of other comprehensive income (loss) and reclassify it to the applicable line item in the Consolidated Statements of Operations, generally Interest expense, net over the corresponding period of the underlying hedged item. The ineffective portion of a derivative financial instrument’s change in fair value is recognized in earnings, generally Interest expense, net at the time the ineffectiveness occurred. To the extent the hedged debt related to our interest rate swaps and forwards is paid off early, we write off the remaining balance in other comprehensive income (loss) and recognize the amount in Interest expense, net in the Consolidated Statements of Operations.

Undesignated Derivatives. Derivative instruments, such as cross-currency swaps, for which hedge accounting is not applied are recorded at fair value in other assets and other liabilities and gains and losses resulting from changes in the fair value are reported in Foreign currency and derivative losses, net in the Consolidated Statements of Operations.

In addition, we may choose to not designate our interest rate swap and forward contracts. If a swap or forward contract is not designated as a hedge, the changes in fair value of these instruments is immediately recognized in earnings in Interest expense, net in the Consolidated Statements of Operations.

Segment Information

Segment Information

Our data centers have similar revenues and operating expenses across all geographic locations. The service offerings and delivery of services are provided in a similar manner, using the same types of facilities and similar technologies. Our chief operating decision maker, the Company's Chief Executive Officer, reviews our financial information on an aggregate basis and makes decisions about the allocations of Company resources and as a result, we have one reportable business segment.

Use of Estimates

Use of Estimates

Preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. These estimates and assumptions are based on management’s knowledge of current events and actions that we may undertake in the future. Significant estimates include and are related to determining lease terms and revenue recognition, the fair value for purchase price allocations for business combinations and asset acquisitions, and the useful lives of real estate and other long-lived assets. Actual results may differ from these estimates and assumptions.

Reclassifications

Reclassifications

Certain financial information has been revised to conform to the current year presentation due to changes in the significance of the particular activity. The following items have been reclassified:

Balance Sheet as of December 31, 2018

• Straight-line rent receivable, net, ($128.7 million) is classified within rent and other receivables, net. This item was previously included in other assets.

Statement of Cash Flows for the year ended December 31, 2018

• Proceeds from revolving credit facility and proceeds from unsecured term loan are separate line items in the current presentation. These items were previously combined in proceeds from debt, net ($1,988.3 million) in the comparable prior year period. Repayments of revolving credit facility and repayments of unsecured term loan are separate line items in the current presentation. These items were previously combined in payments on debt ($1,547.4 million) in the comparable prior year period.

Statement of Cash Flows for the year ended December 31, 2017

•

Proceeds from revolving credit facility, proceeds from unsecured term loan, proceeds from senior notes, payment of debt extinguishment costs and payment of deferred financing costs are separate line items in the current presentation. These items were previously combined in proceeds from debt, net ($2,558.4 million) in the comparable prior year period. Repayments of revolving credit facility and repayments of senior notes are separate line items in the current presentation. These items were previously combined in payments on debt ($1,749.8 million) in the comparable prior year period.

Recently Issued Accounting Standards

Recently Issued Accounting Standards

Recently Adopted Accounting Pronouncements

Leases

We adopted ASU 2016-02 (codified in ASC 842, Leases) on January 1, 2019, applied the package of practical expedients included therein and utilized the modified retrospective transition method with the cumulative effect of transition recorded as an adjustment to retained earnings on the effective date. By applying the modified retrospective transition method, the presentation of financial information for periods prior to January 1, 2019 was not restated.

We elected the package of practical expedients, which permits us to not reassess (1) whether any expired or existing contracts are or contain leases, (2) the lease classification for any expired or existing leases, and (3) the treatment of any initial direct costs for any existing leases as of the effective date. We did not elect the hindsight practical expedient, which permits entities to use hindsight in determining the lease term and assessing impairment.

As a Lessee

The ASU requires that a liability be recorded on the balance sheet for all leases where the reporting entity is a lessee, based on the present value of future lease obligations discounted based on the implicit rate or alternatively our incremental borrowing rate. The implicit rate is generally not determinable and, as a result, we use our incremental borrowing rate at the lease commencement date to determine the present value. We determine our incremental borrowing rate based on an estimate of our existing yield curve at the lease commencement. The rates are then adjusted for various factors to estimate the company’s secured rate, including the lease term and collateralization. The determination of our incremental borrowing rate requires judgment. A corresponding right-of-use ("ROU") asset will also be recorded. Amortization of the lease obligation and the ROU asset for leases classified as operating leases are on a straight-line basis. Leases classified as financing leases are required to be accounted for as financing arrangements similar to the accounting treatment for capital leases under ASC 840, Leases (the former accounting standard for all leases, ("ASC 840")).

We elected the practical expedient to combine our lease and related non-lease components by asset class for our leases.

We elected the practical expedient to not evaluate land easements not previously accounted for as leases prior to the entity’s adoption of the new accounting standard for leases.

We elected to apply the short-term lease measurement and recognition exemption available for leases under the new accounting standard for leases that have an original lease term of 12 months or less.

The adoption of ASC 842 had a significant impact on our Consolidated Balance Sheets due to the recognition of approximately $87.0 million of ROU assets and $123.2 million of lease liabilities for operating leases. We recognized a $9.5 million cumulative effect adjustment to retained earnings. The adjustment to retained earnings was driven principally by measurement of operating lease liabilities at the present value of the remaining lease payments at the adoption date of January 1, 2019. The increase was offset in part by impairment of ROU assets associated with one build-to-suit ("BTS") arrangement recognized as an operating lease under the new accounting standard for leases.

Additionally, we de-recognized certain previously recognized BTS lease assets and liabilities which under the new accounting standard for leases are recognized as operating lease ROU assets and lease liabilities. Prior to the adoption of the new accounting standard for leases, these leases were accounted as financing arrangements or BTS leases assets and liabilities and recorded as buildings and improvement and lease financing arrangements. The table below reflects the impact of adoption of the lease standard on our Consolidated Balance Sheets as of December 31, 2019 and 2018 (in millions) related to previously reported BTS leases:

Impact to the Consolidated Balance Sheets:	As of December 31, 2019		As of December 31, 2018
Buildings and improvements, net of accumulated depreciation	$	—	$	77.4
Operating lease right-of-use assets, net of amortization	44.9		—
Finance lease liabilities	—		123.3
Operating lease liabilities, net of accretion	77.9		—

Prior to the adoption of the new accounting standard for leases, BTS lease assets were amortized over the useful life of the asset and recorded as amortization expense and accretion of BTS lease liability was recorded as an interest expense in the Consolidated Statements of Operations. Upon adoption of the new accounting standard for leases, BTS leases are accounted as operating leases and amortization and accretion of lease liabilities of these operating leases are recorded as lease expenses in property operating expenses in our Consolidated Statements of Operations.

As a Lessor

The accounting for lessors remained largely unchanged from ASC 840. However, the new accounting standard for leases requires that lessors expense certain costs to obtain a lease that are not incremental to origination of a lease. Upon adoption, initial direct costs that are not incremental are expensed as general and administrative expense in our Consolidated Statements of Operations. Prior to the adoption of the new standard, these costs were capitalizable. As a result of electing the package of practical expedients, initial direct costs have not been reassessed prior to the effective date and therefore adoption of the lease standard did not have an impact on our previously reported Consolidated Statements of Operations with respect to initial direct costs.

In addition, under the new accounting standard for leases, certain exceptions under the previous standard for real estate no longer are applicable in the evaluation of the lease classification as an operating, sales type or direct financing lease. In the event that a real estate lease is classified as a sales-type lease, subject to certain conditions, a gain or loss is recognized based on the present value of the lease payments and residual value.

We elected the practical expedient to combine all of our lease and nonlease revenue components into a single combined lease component as nonlease components have the same pattern of transfer as the related predominant operating lease components. Our customer leases include options to extend or terminate the lease agreements. We do not generally include extension or termination options in a customer’s lease term for lease classification purposes or for recognizing lease revenue unless we are reasonably certain the customer will exercise these extension or termination options at lease commencement.

Share-based payments granted to nonemployees

On January 1, 2019, we adopted ASU 2018-07, Compensation-Stock Compensation (Topic 718) which simplifies the accounting for share-based payments granted to nonemployees for goods and services. Under this ASU, the guidance on such payments to nonemployees aligns with the requirements for share-based payments granted to employees. The adoption did not have a significant impact as to how the Company accounts for its share-based payments.

Equity investments

On January 1, 2018, we adopted ASU 2016-01 related to equity investments. Equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) are measured at fair value with changes in fair value recognized in net income. Prior to adoption of this update, changes in fair value for available for sale equity investments were recorded in other comprehensive income (loss). The adoption of the new standard was made through a cumulative-effect adjustment to beginning retained earnings of $75.6 million.

Changes in Shareholders' Equity

In August 2018, the SEC issued Securities Act Release No. 33-10532, Disclosure Update and Simplification, which amends certain of its disclosure requirements and is intended to facilitate the disclosure of information to investors and simplify compliance without significantly altering the total mix of information provided to investors. The amendments became effective on November 5, 2018. Among the amendments is the requirement to present the changes in shareholders’ equity in the interim financial statements (either in a separate statement or footnote) for interim periods on Form 10-Q. In accordance with the SEC's rule, the Company’s first presentation of changes in shareholders’ equity was shown in its Form 10-Q for the quarter ending March 31, 2019.

New Accounting Pronouncements Not Yet Adopted

In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes, which simplifies various aspects related to the accounting for income taxes, eliminates certain exceptions within ASC 740, Income Taxes, and clarifies certain aspects of the current guidance to promote consistency among reporting entities. The guidance is effective for periods beginning after December 15, 2020, with early adoption permitted. The Company is evaluating the impact of the new standard.

In August 2018, the FASB issued ASU 2018-15, Intangibles-Goodwill and Other-Internal-Use Software, which clarifies the accounting for implementation costs incurred in a hosting arrangement that is a service contract. Capitalization of these implementation costs are accounted for under the same guidance as implementation costs incurred to develop or obtain internal-use software and recorded as a prepaid asset. These capitalized costs are to be expensed ratably over the hosting arrangement term as operating expense, along with the service fees. The guidance is effective for periods beginning after December 15, 2019 and early adoption is allowed. The Company is evaluating the impact of the new standard but does not believe that adoption will have a significant impact on the Company.

In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement, which changes the fair value measurement disclosure requirements of ASC 820, Fair Value Measurement. The amendments are part of the FASB's disclosure framework project to improve the effectiveness of disclosures in the notes to the financial statements by facilitating clear communication of the information required by GAAP that is most important to financial statement users and are intended to improve the effectiveness of disclosures of fair value measurement by using those concepts. The guidance is effective for periods beginning after December 15, 2019 and early adoption is allowed. The Company is evaluating the impact of the new standard but does not believe that adoption will have a significant impact on the Company.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses, providing guidance which requires certain financial assets to be presented at the net amount expected to be collected. The FASB has subsequently issued various amendments to further clarify the scope of the initial guidance. ASU 2016-13 and its related amendments will apply to our rent receivables, notes receivable, net investments in leases and any other future financial assets that have the contractual right to receive cash that we may acquire in the future. FASB further clarified that receivables arising from operating leases are not within the scope of this sub-topic. The guidance is effective for periods beginning after December 15, 2019 and early adoption is allowed. The Company has evaluated the impact of the new standard and does not believe the adoption will have a significant impact on the Company because the Company has limited exposure to financial instruments subject to this standard.

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Quarterly Financial Information (Unaudited)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Information (Unaudited)

Quarterly Financial Information (Unaudited)The table below reflects the unaudited selected quarterly information for the years ended December 31, 2019 and 2018:

IN MILLIONS, except per share amounts
	2019
	First Quarter		Second Quarter			Third Quarter			Fourth Quarter			Total
Revenue	$	225.0	$	251.5		$	250.9		$	253.9		$	981.3
Operating income	11.8		19.7			13.2			22.3			67.0
Net income (loss)	89.4		(8.5		)	12.6			(52.1		)	41.4
Basic income (loss) per share	0.82		(0.08		)	0.11			(0.46		)	0.36
Diluted income (loss) per share	0.82		(0.08		)	0.11			(0.46		)	0.36
IN MILLIONS, except per share amounts
	2018
	First Quarter		Second Quarter			Third Quarter			Fourth Quarter			Total
Revenue	$	196.6	$	196.9		$	206.6		$	221.3		$	821.4
Operating income	27.7		27.0			20.2			14.8			89.7
Net income (loss)	43.5		105.9			(42.4		)	(105.8		)	1.2
Basic income (loss) per share	0.45		1.07			(0.43		)	(1.09		)	—
Diluted income (loss) per share	0.45		1.06			(0.43		)	(1.08		)	—

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Fair Value of Financial Instruments and Hedging Activities

12 Months Ended

Dec. 31, 2019

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments and Hedging Activities

Fair Value of Financial Instruments and Hedging Activities

Fair value measurements are based on the assumptions that market participants would use in pricing the asset or liability. As a basis for considering assumptions in fair value measurements, a fair value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity (observable inputs that are classified within Levels 1 and 2 of the hierarchy) and the reporting entity’s own assumptions about market participant assumptions (unobservable inputs classified within Level 3 of the hierarchy) has been established. 

Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets and liabilities that we have the ability to access. Level 2 inputs are inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. Level 2 inputs may include quoted prices for similar assets and liabilities in active markets, as well as inputs that are observable for the asset or liability (other than quoted prices), such as interest rates and yield curves that are observable at commonly quoted intervals. Level 3 inputs are unobservable inputs for the asset or liability that are typically based on an entity’s own assumptions, as there is little, if any, related market activity. In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the fair value measurement falls is based on the lowest level input that is significant to the fair value measurement in its entirety. Our assessment of the significance of a particular input to the fair value measurement requires judgment and considers factors specific to the asset or liability.

The fair value of cash and cash equivalents, rent and other receivables, construction costs payable, dividends payable and accounts payable and accrued expenses approximate their carrying value because of the short-term nature of these financial instruments. The carrying value, exclusive of deferred financing costs, for the revolving credit facilities and the floating rate term loans approximate estimated fair value as of December 31, 2019 and 2018, due to the floating rate nature of the interest rates and the stability of our credit ratings.

We determine the fair value of our derivative financial instruments using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves, foreign exchange rates and implied volatilities. We determine the fair values of our interest rate swaps using the market standard methodology of netting the discounted future fixed cash receipts or payments and the discounted expected variable cash payments. We base the variable cash payments on an expectation of future interest rates, or forward curves, derived from observable market interest rate curves. We base the fair values of our net investment hedges on the change in the spot rate at the end of the period as compared with the strike price at inception.

We incorporate credit valuation adjustments to appropriately reflect nonperformance risk for us and the respective counterparty in the fair value measurements. In adjusting the fair value of our derivative contracts for the effect of nonperformance risk, we consider the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts and guarantees.

We have determined that the majority of the inputs used to value our derivatives fall within Level 2 of the fair value hierarchy. Although the credit valuation adjustments associated with our derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by us and our counterparties, we assess the significance of the impact of the credit valuation adjustments on the overall valuation of our derivative positions and have determined that the credit valuation adjustments are not significant to the overall valuation of our derivatives.

The carrying value and fair value of other financial instruments are as follows (in millions):

IN MILLIONS
For the year ended December 31,	2019				2018
	Carrying Value		Fair Value		Carrying Value		Fair Value
Old 2024 Notes - 5.000%	$	—	$	—	$	705.5	$	684.1
Old 2027 Notes - 5.375%	—		—		509.1		488.0
2024 Notes - 2.900%	599.2		602.1		—		—
2029 Notes - 3.450%	598.2		603.1		—		—
GDS Equity investment	118.7		118.7		185.5		185.5

The fair values of our 2024 Notes and 2029 Notes as of December 31, 2019 and Old 2024 Notes and Old 2027 Notes as of December 31, 2018 were based on the quoted market prices for these notes, which is considered Level 1 of the fair value hierarchy. The fair value of the GDS equity investment as of December 31, 2019 and 2018 were based on the quoted market price for the stock which is considered Level 1 of the fair value hierarchy.

For the year ended December 31, 2019, we recognized impairment losses of $0.7 million included in Impairment losses in our Consolidated Statements of Operations. We utilize estimates of the fair value of assets to determine impairment losses. These estimates include Level 3 inputs including market rents, expected occupancy and estimates of additional capital expenditures, and cashflows from each investment. There were no impairment losses for the year ended December 31, 2018.

Hedging Activities

When we use derivative instruments, it is generally to reduce our exposure to fluctuations in interest rates and foreign currency exchange rate movements. We have not entered into, and do not plan to enter into, financial instruments for trading or speculative purposes. To manage foreign currency exposure, we have entered into Euro denominated debt and cross-currency swaps to hedge the Company's net investment in its Euro functional currency consolidated subsidiaries and the variability in EUR-USD exchange rate.

Accounting for changes in the fair value of derivatives depends on the intended use of the derivative and the designation of the derivative, including whether we have elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Derivatives designated and qualifying as a hedge of the exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as foreign currency risk or interest rate risk, are considered fair value hedges. Derivatives designated and qualifying as a hedge of the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. Hedge accounting generally provides for the matching of the timing of gain or loss recognition on the hedging instrument with the recognition of the changes in the fair value of the hedged asset or liability that are attributable to the hedged risk in a fair value hedge or the earnings effect of the hedged forecasted transactions in a cash flow hedge.

For derivatives designated as "cash flow" hedges, the change in the fair value of the derivative is initially reported in other comprehensive income ("OCI") in our Consolidated Statements of Comprehensive Income (Loss) and subsequently reclassified into gain (loss) when the hedged transaction affects earnings, or the hedging relationship is no longer highly effective. We assess the effectiveness of each hedging relationship whenever financial statements are issued, or earnings are reported and at least every three months. We also use derivatives, such as foreign currency swaps, that are not designated as hedges to manage foreign currency exchange rate risks. The changes in fair values of these derivatives that were not designated or did not qualify as hedging instruments

are immediately, recognized in earnings within the line item Foreign currency and derivative losses, net in the Consolidated Statements of Operations.

The following table summarizes the Company's derivative positions as of December 31, 2019 and 2018 (in millions):

						December 31, 2019				December 31, 2018
		Maturity Date	Notional Amount		Hedged Risk	Asset		Liability		Asset		Liability
Undesignated derivatives
Cross Currency Swaps
	EUR - USD	01/15/2020	$	265.3	Foreign currency exchange	$	—	$	2.1	$	—	$	—
	EUR - USD	01/15/2020	25.6		Foreign currency exchange	—		0.2		—		—
Designated derivatives
Cross Currency Swaps
	EUR - USD	3/29/2023	250.0		Net investment hedge	—		3.8		—		—
	EUR - USD	3/29/2023	250.0		Net investment hedge	—		3.9		—		—
	EUR - USD	1/15/2020	155.9		Net investment hedge	—		1.4		—		—
Interest Rate Swaps
	USD Libor	3/29/2023	300.0		Interest rate hedge - Float to fixed	3.5		—		—		—
Total			$	1,246.8		$	3.5	$	11.4	$	—	$	—

Cross-Currency Swaps

The Company has entered into cross-currency swaps whereby the Company pays floating interest rate and receives floating interest rate to hedge the variability of future cash flows attributable to changes in the 1-month USD LIBOR versus EUR LIBOR rates (a pay-floating, receive-floating interest rate swap).

As of December 31, 2019, the Company has the following cross-currency contracts:

• EUR/USD contracts to sell $446.8 million and purchase €401.1 million maturing in January 2020 representing a fair value liability of $3.7 million.

• EUR/USD contracts to sell $500.0 million and purchase €450.7 million maturing in March 2023 representing a fair value liability of $7.7 million.

The pay-floating, receive-floating interest rate swap payments are recognized in interest expense, net in the Consolidated Statements of Operations. The Company recognized a $7.5 million loss on cross-currency contracts for the year ended December 31, 2019, which are recognized in Foreign currency and derivative losses, net in the Consolidated Statements of Operations.

Interest Rate Swaps

On September 3, 2019, the Company entered into a floating-fixed interest rate swap agreement to convert $300.0 million outstanding of term loan to 1.19% fixed rate debt.

Net Investment Hedges

Exchange rate variations impact our financial results because the financial results of our foreign subsidiaries are translated to U.S. dollars each period, with the effect of exchange rate variations being recorded in OCI as part of the cumulative foreign currency translation adjustment. As a result, changes in the value of our borrowings under the foreign currency denominated revolver under our $1.7 Billion Revolving Credit Facility and synthetically swapped debt will be reported in the same manner as foreign currency translation adjustments, which are recorded in OCI as part of the cumulative foreign currency translation adjustment. As of December 31, 2019, our cross-currency swaps were a liability of $11.4 million reported in Other liabilities, and interest rate swaps were an asset of $3.5 million reported in Other assets.

The fair values of qualifying instruments used in hedging transactions as of December 31, 2019 and 2018 are as follows (in millions):

	Balance Sheet Location	December 31, 2019		December 31, 2018
Derivatives Designated as Hedging Instruments
Assets:
Interest Rate Swap	Other Assets	$	3.5	$	—
Total		$	3.5	$	—
Liabilities:
Cross-Currency Swaps	Other Liabilities	9.1		—
Total		$	9.1	$	—

The following table presents the effect of our derivative financial instruments on our accompanying consolidated financial statements (in millions):

	December 31, 2019			December 31, 2018
Derivatives in Cash Flow Hedging Relationships
Cross-Currency Swaps:
Amount of gain (loss) recognized in OCI for derivatives	$	(0.7	)	$	—
Amount of gain (loss) reclassified from accumulated OCI for derivatives	$	—		$	—
Amount of gain (loss) recognized in earnings	$	(7.5	)	$	—

During the next 12 months, we estimate that immaterial amounts will be reclassified from "Accumulated OCI" to net income (loss).

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Stockholders' Equity

12 Months Ended

Dec. 31, 2019

Equity [Abstract]

Stockholders' Equity

Stockholders' Equity

Capitalization

During the first quarter of 2018, the Company entered into sales agreements pursuant to which the Company may issue and sell from time to time shares of its common stock having an aggregate sales price of up to $500.0 million (the "2018 ATM Stock Offering Program"). During the fourth quarter of 2018, the Company entered into sales agreements pursuant to which the Company may issue and sell from time to time shares of its common stock having an aggregate sales price of up to $750.0 million (the "New 2018 ATM Stock Offering Program"). The New 2018 ATM Stock Offering Program replaced the 2018 ATM Stock Offering Program. During the year ended December 31, 2019, the Company sold approximately 6.5 million shares of its common stock under its New 2018 ATM Stock Offering Program at an average price of $55.43, generating net proceeds of approximately $355.6 million, net of sales commissions, underwriting discounts and estimated expenses of $4.3 million. As of December 31, 2019, there was approximately $290.1 million under the New 2018 ATM Stock Offering Program available for future offerings. During the year ended December 31, 2018, the Company sold 12.2 million common shares at an average price of $59.28. At December 31, 2019, the Company had approximately 114.8 million shares of common stock outstanding.

On November 20, 2019, CyrusOne Inc. entered into a forward sale agreement with a financial institution acting as forward purchaser under the New 2018 ATM Stock Offering Program with respect to 1.6 million shares of its common stock at an initial forward price of $61.67 per share. The Company has twelve months to settle the forward sale agreement. The Company did not receive any proceeds from the sale of its common shares by the forward purchasers. The Company currently expects to fully physically settle the forward equity sale agreement and receive cash proceeds upon one or more settlement dates at the Company’s discretion, prior to the final settlement dates under the forward equity sale agreement in November 2020, in which case we expect to receive aggregate net cash proceeds at settlement equal to the number of shares specified in such forward equity sale agreement multiplied by the relevant forward price per share. The weighted average forward sale price that we expect to receive upon physical settlement of the agreement will be subject to adjustment for (i) a floating interest rate factor equal to a specified daily rate less a spread, (ii) the forward purchasers’ stock borrowing costs and (iii) scheduled dividends during the term of the agreement. We have not settled any portion of this forward equity sale agreement as of the date of this filing.

Dividends

We have declared cash dividends on common shares and distributions on operating partnership units for the years ended December 31, 2019 and 2018 as presented in the table below:

Record date	Payment date	Cash dividend per share or operating partnership unit
March 29, 2018	April 13, 2018	$0.46
June 29, 2018	July 13, 2018	$0.46
September 28, 2018	October 12, 2018	$0.46
January 2, 2019	January 11, 2019	$0.46
March 29, 2019	April 12, 2019	$0.46
June 28, 2019	July 12, 2019	$0.46
September 27, 2019	October 11, 2019	$0.50
January 2, 2020	January 10, 2020	$0.50

 

As of December 31, 2019 and 2018 we had a dividend payable of $58.6 million and $51.0 million, respectively. On February 19, 2020, we announced a regular cash dividend of $0.50 per common share payable to shareholders of record as of the close of business on March 27, 2020, payable on April 10, 2020.

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Consolidated Statements of Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Total Stockholders' Equity
Beginning Balance (in shares) at Dec. 31, 2016		83.5
Beginning Balance at Dec. 31, 2016		$ 0.8	$ 1,412.3	$ (249.8)	$ (1.3)	$ 1,162.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ (83.5)			(83.5)		(83.5)
Issuance of common stock, net (in shares)		12.8
Issuance of common stock, net		$ 0.2	705.5			705.7
Stock-based compensation expense (in shares)		(0.1)
Stock-based compensation expense			14.7			14.7
Tax payment upon exercise of equity awards (in shares)		(0.1)
Tax payment upon exercise of equity awards			(6.9)			(6.9)
Foreign currency translation adjustment	(0.1)				(0.1)	(0.1)
Unrealized gain on equity investment	75.6				75.6	75.6
Net loss on cash flow hedging instruments	0.0
Dividends declared				(153.6)		(153.6)
Ending Balance (in shares) at Dec. 31, 2017		96.1
Ending Balance at Dec. 31, 2017		$ 1.0	2,125.6	(486.9)	74.2	1,713.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 1.2			1.2		1.2
Issuance of common stock, net (in shares)	12.2	12.3
Issuance of common stock, net		$ 0.1	699.5			699.6
Stock-based compensation expense			17.5			17.5
Tax payment upon exercise of equity awards (in shares)		(0.1)
Tax payment upon exercise of equity awards			(5.2)			(5.2)
Foreign currency translation adjustment	$ (10.9)				(10.9)	(10.9)
Unrealized gain on equity investment	0.0
Net loss on cash flow hedging instruments	0.0
Dividends declared				(190.4)		(190.4)
Ending Balance (in shares) at Dec. 31, 2018		108.3
Ending Balance at Dec. 31, 2018	2,226.0	$ 1.1	2,837.4	(600.2)	(12.3)	2,226.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 41.4			41.4		41.4
Issuance of common stock, net (in shares)	6.5	6.5
Issuance of common stock, net			357.2			357.2
Stock-based compensation expense			16.7			16.7
Tax payment upon exercise of equity awards			(9.3)			(9.3)
Foreign currency translation adjustment	$ 11.8				11.8	11.8
Unrealized gain on equity investment	0.0
Net loss on cash flow hedging instruments	(0.7)				(0.7)	(0.7)
Dividends declared				(218.0)		(218.0)
Ending Balance (in shares) at Dec. 31, 2019		114.8
Ending Balance at Dec. 31, 2019	$ 2,434.6	$ 1.1	$ 3,202.0	$ (767.3)	$ (1.2)	$ 2,434.6

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Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Investment in real estate:
Land	$ 147.6	$ 118.5
Buildings and improvements	1,761.4	1,677.5
Equipment	3,028.2	2,630.2
Gross operating real estate	4,937.2	4,426.2
Less accumulated depreciation	(1,379.2)	(1,054.5)
Net operating real estate	3,558.0	3,371.7
Construction in progress, including land under development	946.3	744.9
Land held for future development	206.0	176.4
Total investment in real estate, net	4,710.3	4,293.0
Cash and cash equivalents	76.4	64.4
Rent and other receivables (net of allowance for doubtful accounts of $1.8 and $1.7 as of December 31, 2019 and December 31, 2018, respectively)	291.9	234.9
Restricted cash	1.3	0.0
Operating lease right-of-use assets, net	161.9
Equity investments	135.1	198.1
Goodwill	455.1	455.1
Intangible assets (net of accumulated amortization of $207.5 and $166.9 as of December 31, 2019 and December 31, 2018, respectively)	196.1	235.7
Other assets	113.9	111.3
Total assets	6,142.0	5,592.5
Liabilities and equity
Debt	2,886.6	2,624.7
Finance lease liabilities	31.8
Finance lease liabilities		156.7
Operating lease liabilities	195.8	0.0
Construction costs payable	176.3	195.3
Accounts payable and accrued expenses	122.7	121.3
Dividends payable	58.6	51.0
Deferred revenue and prepaid rents	163.7	148.6
Deferred tax liability	60.5	68.9
Other liabilities	11.4	0.0
Total liabilities	3,707.4	3,366.5
Commitment and contingencies
Stockholders' equity
Preferred stock, $.01 par value, 100,000,000 authorized; no shares issued or outstanding	0.0	0.0
Common stock, $.01 par value, 500,000,000 shares authorized and 114,808,898 and 108,329,314 shares issued and outstanding at December 31, 2019 and December 31, 2018, respectively	1.1	1.1
Additional paid in capital	3,202.0	2,837.4
Accumulated deficit	(767.3)	(600.2)
Accumulated other comprehensive loss	(1.2)	(12.3)
Total stockholders’ equity	2,434.6	2,226.0
Total liabilities and equity	$ 6,142.0	$ 5,592.5

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Label	Element	Value
Accounting Standards Update 2016-02 [Member] | Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 9,500,000
Accounting Standards Update 2014-09 [Member] | Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	300,000
Accounting Standards Update 2014-09 [Member] | Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	300,000
Accounting Standards Update 2016-01 [Member] | AOCI Attributable to Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(75,600,000)
Accounting Standards Update 2016-01 [Member] | Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 0

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Income Taxes - Component of Income Tax Expense (Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current
Federal	$ 1.7	$ 1.0	$ 1.2
State	1.9	2.0	1.8
Foreign	0.2	0.0	0.0
Total current tax expense (benefit)	3.8	3.0	3.0
Deferred:
Federal	0.0	0.0	0.0
State	0.0	0.0	0.0
Foreign	(7.5)	(2.4)	0.0
Total deferred tax expense (benefit)	(7.5)	(2.4)	0.0
Income tax (benefit) expense	$ (3.7)	$ 0.6	$ 3.0

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Acquisitions and Purchases of Fixed Assets - Gross Investment in Real Estate (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Investment in Real Estate
Building and Improvements, Cost	$ 1,761.4	$ 1,677.5
Building and Improvements, Less: accumulated depreciation and amortization	(545.1)	(481.8)
Building and Improvements, Net	1,216.3	1,195.7
Equipment, Cost	3,028.2	2,630.2
Equipment, Less: accumulated depreciation and amortization	(834.1)	(572.7)
Equipment, Net	2,194.1	2,057.5
Intangibles
Cost	403.6	402.6
Less: accumulated depreciation and amortization	(207.5)	(166.9)
Total	196.1	235.7
Customer Relationships
Intangibles
Cost	247.1	247.1
Less: accumulated depreciation and amortization	(151.1)	(137.9)
Total	96.0	109.2
In-Place Leases
Intangibles
Cost	137.1	136.0
Less: accumulated depreciation and amortization	(46.7)	(21.1)
Total	90.4	114.9
Other Contractual
Intangibles
Cost	19.4	19.5
Less: accumulated depreciation and amortization	(9.7)	(7.9)
Total	$ 9.7	$ 11.6

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Stock-Based Compensation - Narrative (Details) - USD ($)								12 Months Ended
	Feb. 21, 2019	Feb. 26, 2018	Feb. 13, 2017	Feb. 01, 2016	Feb. 10, 2015	Feb. 07, 2014	Apr. 17, 2013	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value of options (in dollars per share)								$ 0
Total intrinsic value of options exercised								$ 400,000	$ 600,000	$ 500,000
Aggregate intrinsic value of options outstanding and exercisable								$ 13,100,000
LTIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares reserved for issuance								8,900,000
Number of shares available for grant								4,600,000
2014 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value													$ 12,900,000
Unearned compensation related to awards granted								$ 0
2015 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value												$ 13,800,000
Unearned compensation related to awards granted								0
2016 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value											$ 22,600,000
Unearned compensation related to awards granted								$ 0
2017 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cap on vesting (as a percent)								100.00%
Grant date fair value										$ 15,900,000
Unearned compensation related to awards granted								$ 500,000
Weighted average vesting period								1 month 6 days
2018 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value									$ 20,200,000
Unearned compensation related to awards granted								$ 5,700,000
Weighted average vesting period								9 months 18 days
2019 Grants and ESPP expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value								$ 20,500,000
Unearned compensation related to awards granted								$ 11,900,000
Weighted average vesting period								1 year 7 months 6 days
Market-based awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period when vesting is limited to 100%								2 years
Vesting period								3 years
Market-based awards | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
REIT index causing awards to vest (as a percent)								2.00%
Market-based awards | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
REIT index causing awards to vest (as a percent)								200.00%
Market-based awards | If CyrusOne's total stockholder return is less than the return of the Index
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights (as a percent)								0.00%
Market-based awards | If CyrusOne's total stockholder return is equal to or greater than the return of the Index
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights (as a percent)								100.00%
Market-based awards | if CyrusOne's total stockholder return exceeds the return of the Index by 2%
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights (as a percent)								200.00%
Market-based awards | If CyrusOne's total stockholder return exceeds the return of the Index, but is negative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights (as a percent)								50.00%
Market-based awards | 2014 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights (as a percent)						50.00%
Vesting period						3 years
Market-based awards | 2016 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value of non-option awards (in dollars per share)				$ 43.66
Market-based awards | 2017 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)			129,146
Grant date fair value of non-option awards (in dollars per share)			$ 63.23
Market-based awards | 2018 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)		160,266
Grant date fair value of non-option awards (in dollars per share)		$ 52.53
Market-based awards | 2019 Grants and ESPP expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	184,145
Grant date fair value of non-option awards (in dollars per share)	$ 43.67
Time-based restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of right to receive dividends payable								10 days
Time-based restricted stock units | 2016 Grants | Cliff Vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period											3 years
Time-based restricted stock units | 2017 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)			119,218							20,852
Vesting period			3 years							3 years
Time-based restricted stock units | 2018 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)		161,797							40,249
Vesting period		3 years							3 years
Time-based restricted stock units | 2019 Grants and ESPP expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	175,073							42,052
Vesting period	3 years
Time-based restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)								16,681
Grant date fair value of non-option awards (in dollars per share)								$ 52.46
Non-option awards outstanding (in shares)								16,681	419,356
Time-based restricted stock | 2014 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)													46,313
Aggregate fair value													$ 1,000,000.0
Vesting period													3 years
Time-based restricted stock | 2014 Grants | Cliff Vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period													1 year
Time-based restricted stock | 2015 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights (as a percent)					20.00%
Granted (in shares)												50,300
Time-based restricted stock | 2016 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)											47,667
Vesting period				3 years							3 years
Time-based restricted stock | 2016 Grants | Cliff Vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)											5,894
Vesting period				3 years
Time-based restricted stock | 2017 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)			18,179
Vesting period			1 year
Time-based restricted stock | 2018 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)		17,052
Vesting period		1 year
Time-based restricted stock | 2019 Grants and ESPP expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	16,681
Vesting period	1 year
Performance-based awards | 2013 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period							3 years
Performance-based awards | 2014 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights (as a percent)						50.00%
Performance-based awards | 2014 Grants | Below 90% of EBITDA Target
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights (as a percent)						0.00%
Performance-based awards | 2014 Grants | At 90% of EBITDA Target
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights (as a percent)						50.00%
Performance-based awards | 2014 Grants | At 100% of EBITDA Target
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights (as a percent)						100.00%
Performance-based awards | 2014 Grants | At or above 115% of EBITDA Target
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights (as a percent)						200.00%
Performance-based awards | 2015 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)												67,012
Performance-based awards | 2015 Grants | Cliff Vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period												3 years
Stock options | 2015 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					3 years
Stock options | 2016 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)				222,461
Contractual life				10 years
Exercise price (in dollars per share)				$ 36.99
Grant date fair value of options (in dollars per share)				$ 6.99
Performance-based and market-based awards | 2015 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period when vesting is limited to 100%								2 years
Cap on vesting (as a percent)				100.00%
Vesting rights (as a percent)					80.00%
Vesting period					3 years
Cumulative true-up maximum (as a percent)					200.00%
Performance-based and market-based awards | 2016 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period when vesting is limited to 100%				2 years
Cap on vesting (as a percent)				100.00%
Vesting period				3 years
Cumulative true-up maximum (as a percent)				200.00%
Time-based restricted stock units and restricted stock | 2015 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					3 years
Time-based restricted stock units and restricted stock | 2017 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value of non-option awards (in dollars per share)			$ 48.13
Time-based restricted stock units and restricted stock | 2018 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value of non-option awards (in dollars per share)		$ 51.31
Time-based restricted stock units and restricted stock | 2019 Grants and ESPP expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value of non-option awards (in dollars per share)	$ 52.46
Time, performance and market-based awards | 2016 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)				641,097
Time and performance-based awards | 2016 Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value of non-option awards (in dollars per share)				$ 36.99
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)								401,270
Grant date fair value of non-option awards (in dollars per share)								$ 48.90
Non-option awards outstanding (in shares)								646,619	511,409

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Leases - As a Lessee - Narrative (Details)	12 Months Ended
	Dec. 31, 2019 facility	Sep. 30, 2019 lease
Lessee, Lease, Description [Line Items]
Number of facilities, finance lease	5
Minimum
Lessee, Lease, Description [Line Items]
Finance lease, remaining term of contract	2 years
Operating lease, term of contract	1 year
Maximum
Lessee, Lease, Description [Line Items]
Finance lease, remaining term of contract	21 years
Operating lease, term of contract	25 years
Data Center
Lessee, Lease, Description [Line Items]
Number of facilities, operating lease	12
Office
Lessee, Lease, Description [Line Items]
Number of facilities, operating lease	4
Dublin, Ireland | Ground Lease 1
Lessee, Lease, Description [Line Items]
Number of leases | lease		1
Finance lease, term of contract		999 years

XML

Leases - As a Lessee - Maturities of Operating and Financing Lease Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Operating Leases
2020	$ 22.4
2021	21.0
2022	22.4
2023	18.5
2024	13.9
Thereafter	165.4
Total lease payments	263.6
Less: Imputed interest	(67.8)
Total lease obligations	195.8	$ 0.0
Finance Leases
2020	5.0
2021	4.1
2022	2.9
2023	1.9
2024	1.4
Thereafter	31.1
Total lease payments	46.4
Less: Imputed interest	(14.6)
Total lease obligations	$ 31.8

XML

Stock-Based Compensation - Restricted Stock Awards Activity (Details)	12 Months Ended
	Dec. 31, 2019 $ / shares shares
Restricted Stock Units
Shares
Non-vested beginning balance (in shares) | shares	511,409
Granted (in shares) | shares	401,270
Vested (in shares) | shares	(187,176)
Forfeited (in shares) | shares	(78,884)
Non-vested ending balance (in shares) | shares	646,619
Weighted Average Grant Date Fair Value
Non-vested beginning balance (in dollars per share) | $ / shares	$ 56.23
Granted (in dollars per share) | $ / shares	48.90
Vested (in dollars per share) | $ / shares	43.37
Forfeited (in dollars per share) | $ / shares	52.99
Non-vested ending balance (in dollars per share) | $ / shares	$ 55.80
Restricted Stock
Shares
Non-vested beginning balance (in shares) | shares	419,356
Granted (in shares) | shares	16,681
Vested (in shares) | shares	(384,753)
Forfeited (in shares) | shares	(34,603)
Non-vested ending balance (in shares) | shares	16,681
Weighted Average Grant Date Fair Value
Non-vested beginning balance (in dollars per share) | $ / shares	$ 35.73
Granted (in dollars per share) | $ / shares	52.46
Vested (in dollars per share) | $ / shares	35.61
Forfeited (in dollars per share) | $ / shares	37.09
Non-vested ending balance (in dollars per share) | $ / shares	$ 52.46

XML

Subsequent Event (Details) - Subsequent Event - 2027 Notes - Senior Notes	Jan. 22, 2020 EUR (€)
Debt Instrument [Line Items]
Debt offering	€ 500,000,000.0
Stated interest rate	1.45%

XML

Income Taxes - Components of Deferred Tax Assets and LIabilities (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets
Net operating loss carryforwards	$ 16.3	$ 15.1
Accounts receivable/payable and other	8.2	7.4
Finance leases	0.9	1.8
Total gross deferred tax assets	25.4	24.3
Valuation allowance	(7.6)	(6.9)
Total gross deferred tax assets, net	17.8	17.4
Deferred tax liabilities
Fixed assets	(67.4)	(73.5)
Intangibles	(10.9)	(12.8)
Total gross deferred tax liabilities	(78.3)	(86.3)
Total net deferred tax assets/(liabilities)	$ (60.5)	$ (68.9)

XML

Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2019

Share-based Payment Arrangement [Abstract]

Schedule of Compensation Expense

Stock-based compensation expense was as follows:

For the periods ended December 31,	2019		2018		2017
2014 Grants	$	—	$	—	$	0.1
2015 Grants	—		0.4		1.8
2016 Grants	1.1		5.7		6.6
2017 Grants	3.1		4.6		6.2
2018 Grants	5.4		6.8		—
2019 Grants and ESPP expense	7.1		—		—
Total	$	16.7	$	17.5	$	14.7

Schedule of Restricted Stock Awards Activity

Restricted Stock ("RS")

	2019
	Restricted Stock		Weighted Average Grant Date Fair Value
Outstanding January 1,	419,356		$	35.73
Granted	16,681		52.46
Vested	(384,753	)	35.61
Forfeited	(34,603	)	37.09
Outstanding December 31,	16,681		$	52.46

The following tables summarize the unvested restricted stock units, restricted stock and stock options activity and the weighted average fair value of these shares at the date of grant for the year ended December 31, 2019:

Restricted Stock Units ("RSU")

	2019
	Restricted Stock Units		Weighted Average Grant Date Fair Value
Outstanding January 1,	511,409		$	56.23
Granted	401,270		48.90
Vested	(187,176	)	43.37
Forfeited	(78,884	)	52.99
Outstanding December 31,	646,619		$	55.80

Schedule of Unvested Stock Options

Stock Options

	2019
	Options		Weighted Average Exercise Price
Outstanding January 1,	401,223		$	31.96
Granted	—		—
Exercised	(25,586	)	36.70
Forfeited or expired	(551	)	23.58
Outstanding December 31,	375,086		31.64
Exercisable at December 31,	375,086		31.64
Vested and expected to vest	375,086		$	31.64

Schedule of Option Valuation Assumptions

The following table summarizes the stock option assumptions for the years ended December 31, 2019, 2018 and 2017:

	Options Outstanding		Options Exercisable		Assumption Range
Exercise Prices	Number of Shares	Weighted Average Remaining Contractual Terms (Years)	Number of Shares	Weighted Average Remaining Contractual Terms (Years)	Risk-Free Interest Rate	Expected Annual Dividend Yield	Expected Terms in Years	Expected Volatility
2017
$23.58	67,322	5.3	67,322	5.3	0.92%	3.4%	6.0	35%
$28.42	143,358	7.1	95,572	7.1	1.6% - 1.75%	4.4%	5.5-6.5	32.5% - 37.5%
$30.74	12,719	7.6	8,479	7.6	1.6% - 1.75%	4.4%	5.5-6.5	32.5% - 37.5%
$36.99	192,060	8.1	64,022	8.1	1.47% - 1.64%	4.1%	5.5-6.5	27.5% - 35.0%
2018
$23.58	53,086	4.3	53,086	4.3	0.92%	3.4%	6.0	35%
$28.42	143,358	6.1	143,358	6.1	1.6% - 1.75%	4.4%	5.5-6.5	32.5% - 37.5%
$30.74	12,719	6.6	12,719	6.6	1.6% - 1.75%	4.4%	5.5-6.5	32.5% - 37.5%
$36.99	192,060	6.8	130,425	6.7	1.47% - 1.64%	4.1%	5.5-6.5	27.5% - 35.0%
2019
$23.58	51,985	3.3	51,985	3.3	0.92%	3.4%	6.0	35%
$28.42	143,358	5.1	143,358	5.1	1.6% - 1.75%	4.4%	5.5-6.5	32.5% - 37.5%
$30.74	12,719	5.6	12,719	5.6	1.6% - 1.75%	4.4%	5.5-6.5	32.5% - 37.5%
$36.99	167,024	6.1	167,024	6.1	1.47% - 1.64%	4.1%	5.5-6.5	27.5% - 35.0%

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(Tables)

12 Months Ended

Dec. 31, 2019

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Schedule of Other Assets

As of December 31, 2019 and 2018, the components of other assets are as follows (in millions):

	12/31/2019		12/31/2018
Deferred leasing and other contract costs	$	53.2	$	43.6
Prepaid expenses	22.1		26.4
Non-real estate assets, net	16.3		18.4
Derivative assets	3.5		—
Other assets	18.8		22.9
Total	$	113.9	$	111.3

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Guarantors - Consolidating Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Condensed Financial Statements, Captions [Line Items]
Total investment in real estate, net	$ 4,710.3	$ 4,293.0
Cash and cash equivalents	76.4	64.4
Investment in subsidiaries	0.0	0.0
Rent and other receivables, net	291.9	234.9
Restricted cash	1.3	0.0
Operating lease right-of-use assets, net	161.9
Intercompany receivable	0.0	0.0
Equity investments	135.1	198.1
Goodwill	455.1	455.1
Intangible assets, net	196.1	235.7
Other assets	113.9	111.3
Total assets	6,142.0	5,592.5
Debt	2,886.6	2,624.7
Intercompany payable	0.0	0.0
Finance lease liabilities	31.8
Finance lease liabilities		156.7
Operating lease liabilities	195.8	0.0
Accounts payable and accrued expenses	122.7	121.3
Construction costs payable	176.3	195.3	$ 115.5
Dividends payable	58.6	51.0	$ 41.8
Deferred revenue and prepaid rents	163.7	148.6
Deferred tax liability	60.5	68.9
Other liabilities	11.4	0.0
Total liabilities	3,707.4	3,366.5
Total stockholders’ equity	2,434.6	2,226.0
Total liabilities and equity	6,142.0	5,592.5
Eliminations/Consolidations
Condensed Financial Statements, Captions [Line Items]
Total investment in real estate, net	69.9	36.9
Cash and cash equivalents	0.0	0.0
Investment in subsidiaries	(5,988.0)	(5,361.6)
Rent and other receivables, net	0.0	0.0
Restricted cash	0.0
Operating lease right-of-use assets, net	0.0
Intercompany receivable	(1,813.2)	(1,791.5)
Equity investments	0.0	0.0
Goodwill	0.0	0.0
Intangible assets, net	0.0	0.0
Other assets	0.0	0.0
Total assets	(7,731.3)	(7,116.2)
Debt	0.0	0.0
Intercompany payable	(1,813.2)	(1,791.5)
Finance lease liabilities	0.0
Finance lease liabilities		0.0
Operating lease liabilities	0.0
Accounts payable and accrued expenses	0.0	0.0
Construction costs payable	0.0	0.0
Dividends payable	0.0	0.0
Deferred revenue and prepaid rents	0.0	0.0
Deferred tax liability	0.0	0.0
Other liabilities	0.0
Total liabilities	(1,813.2)	(1,791.5)
Total stockholders’ equity	(5,918.1)	(5,324.7)
Total liabilities and equity	(7,731.3)	(7,116.2)
General Partner
Condensed Financial Statements, Captions [Line Items]
Total investment in real estate, net	0.0	0.0
Cash and cash equivalents	0.0	0.0
Investment in subsidiaries	16.8	22.2
Rent and other receivables, net	0.0	0.0
Restricted cash	0.0
Operating lease right-of-use assets, net	0.0
Intercompany receivable	0.0	0.0
Equity investments	0.0	0.0
Goodwill	0.0	0.0
Intangible assets, net	0.0	0.0
Other assets	0.0	0.0
Total assets	16.8	22.2
Debt	0.0	0.0
Intercompany payable	0.0	0.0
Finance lease liabilities	0.0
Finance lease liabilities		0.0
Operating lease liabilities	0.0
Accounts payable and accrued expenses	0.0	0.0
Construction costs payable	0.0	0.0
Dividends payable	0.0	0.0
Deferred revenue and prepaid rents	0.0	0.0
Deferred tax liability	0.0	0.0
Other liabilities	0.0
Total liabilities	0.0	0.0
Total stockholders’ equity	16.8	22.2
Total liabilities and equity	16.8	22.2
Parent Guarantor
Condensed Financial Statements, Captions [Line Items]
Total investment in real estate, net	0.0	0.0
Cash and cash equivalents	0.0	0.0
Investment in subsidiaries	2,402.2	2,216.9
Rent and other receivables, net	0.0	0.0
Restricted cash	0.0
Operating lease right-of-use assets, net	0.0
Intercompany receivable	21.1	23.2
Equity investments	0.0	0.0
Goodwill	0.0	0.0
Intangible assets, net	0.0	0.0
Other assets	0.0	0.0
Total assets	2,423.3	2,240.1
Debt	0.0	0.0
Intercompany payable	0.0	0.0
Finance lease liabilities	0.0
Finance lease liabilities		0.0
Operating lease liabilities	0.0
Accounts payable and accrued expenses	0.0	0.0
Construction costs payable	0.0	0.0
Dividends payable	58.6	51.0
Deferred revenue and prepaid rents	0.0	0.0
Deferred tax liability	0.0	0.0
Other liabilities	0.0
Total liabilities	58.6	51.0
Total stockholders’ equity	2,364.7	2,189.1
Total liabilities and equity	2,423.3	2,240.1
LP Co-issuer
Condensed Financial Statements, Captions [Line Items]
Total investment in real estate, net	0.0	0.0
Cash and cash equivalents	0.6	0.0
Investment in subsidiaries	3,569.0	3,122.5
Rent and other receivables, net	0.0	0.0
Restricted cash	0.0
Operating lease right-of-use assets, net	0.0
Intercompany receivable	1,753.3	1,761.5
Equity investments	0.0	0.0
Goodwill	0.0	0.0
Intangible assets, net	0.0	0.0
Other assets	3.5	0.5
Total assets	5,326.4	4,884.5
Debt	2,886.6	2,624.7
Intercompany payable	21.1	23.2
Finance lease liabilities	0.0
Finance lease liabilities		0.0
Operating lease liabilities	0.0
Accounts payable and accrued expenses	5.1	19.7
Construction costs payable	0.0	0.0
Dividends payable	0.0	0.0
Deferred revenue and prepaid rents	0.0	0.0
Deferred tax liability	0.0	0.0
Other liabilities	11.4
Total liabilities	2,924.2	2,667.6
Total stockholders’ equity	2,402.2	2,216.9
Total liabilities and equity	5,326.4	4,884.5
Finance Co-issuer
Condensed Financial Statements, Captions [Line Items]
Total investment in real estate, net	0.0	0.0
Cash and cash equivalents	0.0	0.0
Investment in subsidiaries	0.0	0.0
Rent and other receivables, net	0.0	0.0
Restricted cash	0.0
Operating lease right-of-use assets, net	0.0
Intercompany receivable	0.0	0.0
Equity investments	0.0	0.0
Goodwill	0.0	0.0
Intangible assets, net	0.0	0.0
Other assets	0.0	0.0
Total assets	0.0	0.0
Debt	0.0	0.0
Intercompany payable	0.0	0.0
Finance lease liabilities	0.0
Finance lease liabilities		0.0
Operating lease liabilities	0.0
Accounts payable and accrued expenses	0.0	0.0
Construction costs payable	0.0	0.0
Dividends payable	0.0	0.0
Deferred revenue and prepaid rents	0.0	0.0
Deferred tax liability	0.0	0.0
Other liabilities	0.0
Total liabilities	0.0	0.0
Total stockholders’ equity	0.0	0.0
Total liabilities and equity	0.0	0.0
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Total investment in real estate, net	4,640.4
Cash and cash equivalents	75.8
Investment in subsidiaries	0.0
Rent and other receivables, net	291.9
Restricted cash	1.3
Operating lease right-of-use assets, net	161.9
Intercompany receivable	38.8
Equity investments	135.1
Goodwill	455.1
Intangible assets, net	196.1
Other assets	110.4
Total assets	6,106.8
Debt	0.0
Intercompany payable	1,792.1
Finance lease liabilities	31.8
Operating lease liabilities	195.8
Accounts payable and accrued expenses	117.6
Construction costs payable	176.3
Dividends payable	0.0
Deferred revenue and prepaid rents	163.7
Deferred tax liability	60.5
Other liabilities	0.0
Total liabilities	2,537.8
Total stockholders’ equity	3,569.0
Total liabilities and equity	$ 6,106.8
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Total investment in real estate, net		3,611.2
Cash and cash equivalents		27.2
Investment in subsidiaries		0.0
Rent and other receivables, net		218.7
Intercompany receivable		6.8
Equity investments		0.0
Goodwill		455.1
Intangible assets, net		178.1
Other assets		94.4
Total assets		4,591.5
Debt		0.0
Intercompany payable		1,761.5
Finance lease liabilities		104.0
Accounts payable and accrued expenses		95.9
Construction costs payable		175.6
Dividends payable		0.0
Deferred revenue and prepaid rents		144.9
Deferred tax liability		0.0
Total liabilities		2,281.9
Total stockholders’ equity		2,309.6
Total liabilities and equity		4,591.5
Non- Guarantors
Condensed Financial Statements, Captions [Line Items]
Total investment in real estate, net		644.9
Cash and cash equivalents		37.2
Investment in subsidiaries		0.0
Rent and other receivables, net		16.2
Intercompany receivable		0.0
Equity investments		198.1
Goodwill		0.0
Intangible assets, net		57.6
Other assets		16.4
Total assets		970.4
Debt		0.0
Intercompany payable		6.8
Finance lease liabilities		52.7
Accounts payable and accrued expenses		5.7
Construction costs payable		19.7
Dividends payable		0.0
Deferred revenue and prepaid rents		3.7
Deferred tax liability		68.9
Total liabilities		157.5
Total stockholders’ equity		812.9
Total liabilities and equity		$ 970.4

XML

Fair Value of Financial Instruments and Hedging Activities - Fair Values of Qualifying Instruments (Details) - Derivatives Designated as Hedging Instruments - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Other Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	$ 3.5	$ 0.0
Other Assets | Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	3.5	0.0
Other Liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities	9.1	0.0
Other Liabilities | Cross-Currency Swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities	$ 9.1	$ 0.0

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Goodwill, Intangible and Other Long-Lived Assets - Estimated Amortization Expense For Finite-Lived Intangible Assets (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
2020	$ 39.3
2021	32.0
2022	28.6
2023	20.7
2024	18.6
Thereafter	56.9
Total	$ 196.1	$ 235.7

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Equity Investments - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended	12 Months Ended
	Oct. 18, 2017	Apr. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Oct. 30, 2018	Oct. 08, 2018
Schedule of Equity Method Investments [Line Items]
Value of investment			$ 135.1	$ 198.1
Sales price			$ 199.0	$ 0.0	$ 0.0
GDS
Schedule of Equity Method Investments [Line Items]
Newly issued American depository shares (in shares)	8,000,000.0
Price per ordinary share (in dollars per share)	$ 12.45		$ 51.58
Discount rate	4.00%
Value of investment	$ 100.0		$ 118.7
American depository shares equivalent (in shares)	8		2,300,000
Number of GDS ADSs sold (in shares)		5,700,000
Sales price		$ 199.0
Affiliated Entity | ODATA
Schedule of Equity Method Investments [Line Items]
Payments for investments							$ 11.9
Equity interest (as a percent)							10.00%
Additional investments			$ 3.8
Affiliated Entity | ODATA Colombia
Schedule of Equity Method Investments [Line Items]
Payments for investments						$ 0.7

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Debt - Maturities of Debt (Details) - USD ($)	Dec. 31, 2019	Mar. 29, 2018
Debt Instrument [Line Items]
2020	$ 0
2021	0
2022	615,000,000.0
2023	800,000,000.0
2024	600,000,000.0
Thereafter	900,000,000.0
Total debt	2,915,000,000.0
$3.0 Billion Credit Facility(a)
Debt Instrument [Line Items]
2020	0
2021	0
2022	615,000,000.0
2023	800,000,000.0
2024	0
Thereafter	300,000,000.0
Total debt	1,715,000,000.0
2024 Notes and 2029 Notes
Debt Instrument [Line Items]
2020	0
2021	0
2022	0
2023	0
2024	600,000,000.0
Thereafter	600,000,000.0
Total debt	1,200,000,000.0
$3 Billion Credit Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 3,000,000,000.0	$ 3,000,000,000.0

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Debt - Senior notes (Details) - USD ($)				1 Months Ended	12 Months Ended
	Dec. 05, 2019	Nov. 03, 2017	Mar. 17, 2017	Mar. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Aug. 31, 2018	Mar. 29, 2018	Nov. 20, 2012
Debt Instrument [Line Items]
Long-term debt					$ 2,886,600,000	$ 2,624,700,000
Total consideration, including accrued and unpaid interest					$ 1,197,400,000	0	$ 1,217,800,000
Senior Notes | 2.900% Senior Notes Due 2024
Debt Instrument [Line Items]
Stated interest rate					2.90%
Senior Notes | 3.450% Senior Notes Due 2029
Debt Instrument [Line Items]
Stated interest rate					3.45%
Senior Notes | 2.900% Senior Notes Due 2024 and 3.450% Senior Notes Due 2029
Debt Instrument [Line Items]
Debt proceeds, net of underwriting costs	$ 1,197,400,000
Senior Notes | 5.000% Senior Notes Due 2024 and 5.375% Senior Notes Due 2027
Debt Instrument [Line Items]
Debt proceeds, net of underwriting costs		$ 416,100,000	$ 791,200,000
Debt underwriting costs		4,400,000
Senior Notes | Old 2024 Notes - 5.000%
Debt Instrument [Line Items]
Stated interest rate					5.00%
Senior Notes | Old 2027 Notes - 5.375%
Debt Instrument [Line Items]
Stated interest rate					5.375%
Senior Notes | 6.375% senior notes due 2022
Debt Instrument [Line Items]
Loss on early extinguishment of debt	71,800,000
Revolving Credit Facility | $1.7 Billion Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity					$ 1,700,000,000			$ 1,700,000,000	$ 1,700,000,000
Revolving Credit Facility | $3 Billion Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity					3,000,000,000.0				$ 3,000,000,000.0
CyrusOne LP and CyrusOne Finance Corp | Senior Notes | 2.900% Senior Notes Due 2024
Debt Instrument [Line Items]
Debt principal amount	$ 600,000,000.0
Stated interest rate	2.90%
CyrusOne LP and CyrusOne Finance Corp | Senior Notes | 3.450% Senior Notes Due 2029
Debt Instrument [Line Items]
Debt principal amount	$ 600,000,000.0
Stated interest rate	3.45%
CyrusOne LP and CyrusOne Finance Corp | Senior Notes | Old 2024 Notes - 5.000%
Debt Instrument [Line Items]
Debt principal amount		$ 200,000,000.0	$ 500,000,000.0
Stated interest rate		5.00%	5.00%
CyrusOne LP and CyrusOne Finance Corp | Senior Notes | Old 2027 Notes - 5.375%
Debt Instrument [Line Items]
Debt principal amount		$ 200,000,000.0	$ 300,000,000.0
Stated interest rate		5.375%	5.375%
CyrusOne LP and CyrusOne Finance Corp | Senior Notes | 6.375% senior notes due 2022
Debt Instrument [Line Items]
Debt principal amount										$ 525,000,000.0
Stated interest rate				6.375%						6.375%
Loss on early extinguishment of debt				$ 36,500,000
Total consideration, including accrued and unpaid interest				515,100,000
Accrued and unpaid interest				10,300,000
Fair Value | Senior Notes | 2.900% Senior Notes Due 2024
Debt Instrument [Line Items]
Long-term debt					602,100,000	0
Fair Value | Senior Notes | 3.450% Senior Notes Due 2029
Debt Instrument [Line Items]
Long-term debt					603,100,000	0
Fair Value | Senior Notes | Old 2024 Notes - 5.000%
Debt Instrument [Line Items]
Long-term debt					0	684,100,000
Fair Value | Senior Notes | Old 2027 Notes - 5.375%
Debt Instrument [Line Items]
Long-term debt					0	488,000,000.0
Fair Value | Senior Notes | 6.375% senior notes due 2022
Debt Instrument [Line Items]
Long-term debt				474,800,000
Carrying Value | Senior Notes | 2.900% Senior Notes Due 2024
Debt Instrument [Line Items]
Long-term debt					599,200,000	0
Carrying Value | Senior Notes | 3.450% Senior Notes Due 2029
Debt Instrument [Line Items]
Long-term debt					598,200,000	0
Carrying Value | Senior Notes | Old 2024 Notes - 5.000%
Debt Instrument [Line Items]
Long-term debt					0	705,500,000
Carrying Value | Senior Notes | Old 2027 Notes - 5.375%
Debt Instrument [Line Items]
Long-term debt					$ 0	$ 509,100,000
Carrying Value | Senior Notes | 6.375% senior notes due 2022
Debt Instrument [Line Items]
Long-term debt				$ 469,000,000.0

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Income (Loss) per Share - Computation of Basic and Diluted Net (Loss) Income Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Numerator:
Net income (loss)	$ (52.1)	$ 12.6	$ (8.5)	$ 89.4	$ (105.8)	$ (42.4)	$ 105.9	$ 43.5	$ 41.4	$ 1.2	$ (83.5)
Less: Restricted stock dividends, Basic									(0.7)	(1.1)	(0.9)
Less: Restricted stock dividends, Diluted									(0.7)	(1.1)	(0.9)
Net income (loss) available to stockholders, Basic									40.7	0.1	(84.4)
Net (loss) income available to stockholders, Diluted									$ 40.7	$ 0.1	$ (84.4)
Denominator:
Weighted average common outstanding - basic (in shares)									112.1	99.8	88.9
Performance-based restricted stock and units (in shares)									0.4	0.6	0.0
Weighted average shares outstanding- diluted (in shares)									112.5	100.4	88.9
EPS:
Net income (loss) per share-basic (in dollars per share)	$ (0.46)	$ 0.11	$ (0.08)	$ 0.82	$ (1.09)	$ (0.43)	$ 1.07	$ 0.45	$ 0.36	$ 0	$ (0.95)
Effect of dilutive shares:
Net income (loss) per share-diluted (in dollars per share)	$ (0.46)	$ 0.11	$ (0.08)	$ 0.82	$ (1.08)	$ (0.43)	$ 1.06	$ 0.45	$ 0.36	$ 0	$ (0.95)
Restricted stock
Earnings Per Share [Line Items]
Anti-dilutive securities excluded from diluted earnings per share (in shares)											0.4
Stock options
Earnings Per Share [Line Items]
Anti-dilutive securities excluded from diluted earnings per share (in shares)											0.1

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Description of Business (Details)	12 Months Ended
	Dec. 31, 2019 recovery_center data_center
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of data centers | data_center	49
Number of recovery centers | recovery_center	2

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Revenue Recognition - Future Minimum Lease Payments under Non-Cancellable Operating Leases (Details) $ in Millions	Dec. 31, 2019 USD ($)
Revenue from Contract with Customer [Abstract]
2020	$ 736.2
2021	620.2
2022	528.2
2023	426.5
2024	328.7
Thereafter	973.9
Total	$ 3,613.7

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Schedule III. Real Estate Properties and Accumulated Depreciation - Historical Cost and Accumulated Depreciation and Amortization (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property
Balance—beginning of period	$ 5,347.5	$ 3,840.8	$ 2,601.6
Disposals	(15.8)	(20.8)	(3.4)
Impairments	(0.7)	0.0	(71.8)
Impact of adoption of ASU 2016-02	(97.8)	0.0	0.0
Additions (acquisitions and improvements)	856.3	1,527.5	1,314.4
Balance, end of period(1)	6,089.5	5,347.5	3,840.8
Accumulated Depreciation
Balance—beginning of period	1,054.5	782.4	578.5
Disposals	(14.0)	(14.0)	(1.9)
Impairments	0.0	0.0	(14.1)
Impact of adoption of ASU 2016-02	(19.3)	0.0	0.0
Additions (depreciation and amortization expense)	358.0	286.1	219.9
Balance, end of period	1,379.2	1,054.5	782.4
Construction in progress, including land under development	$ 946.3	$ 744.9	$ 487.1

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Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2019

Revenue from Contract with Customer [Abstract]

Future Minimum Lease Payments under Non-Cancellable Operating Leases

At December 31, 2019, the future minimum lease payments to be received for the next five years under non-cancellable operating leases, excluding month-to-month arrangements and metered power reimbursements are shown below:

IN MILLIONS
2020	$	736.2
2021	620.2
2022	528.2
2023	426.5
2024	328.7
Thereafter	973.9
Total	$	3,613.7

Future Minimum Lease Payments to be Received, Excluding Month-to-Month Arrangements and Metered Power Reimbursements

The future minimum lease payments as of December 31, 2018 to be received under non-cancellable operating leases, excluding month-to-month arrangements and metered power reimbursements are shown below:

IN MILLIONS
2019	$	647.6
2020	553.7
2021	453.0
2022	365.5
2023	284.4
Thereafter	835.9
Total	$	3,140.1

Disaggregation of Revenue

For the year ended December 31, 2019, lease revenue disaggregated by primary revenue stream is as follows (in millions):

Lease revenue	Year Ended December 31, 2019
Colocation (Minimum lease payments)	$	793.5
Metered power reimbursements (Variable lease payments)	138.8
Total lease revenue	$	932.3

For the years ended December 31, 2019 and 2018 revenue from contracts with customers disaggregated by primary revenue stream is as follows (in millions):

Revenue from contracts with customers	Year Ended December 31, 2019		Year Ended December 31, 2018
Equipment sales and services	$	29.7	$	15.3
Other revenue	19.3		17.4
Total revenue from contracts with customers	$	49.0	$	32.7

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Schedule II. Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2019

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

Schedule II. Valuation and Qualifying Accounts

Schedule II.

Valuation and Qualifying Accounts 

	Beginning		Charge			(Deductions)/			End
(dollars in millions)	of Period		to Expenses			Additions			of Period
Allowance for Doubtful Accounts
2019	$	1.7	$	1.7		$	(1.6	)	$	1.8
2018	2.1		2.3			(2.7		)	1.7
2017	2.1		0.2			(0.2		)	2.1
Deferred Tax Valuation Allowance
2019	$	6.9	$	0.7		$	—		$	7.6
2018	7.2		(0.3		)	—			6.9
2017	6.5		0.7			—			7.2

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Equity Investments

12 Months Ended

Dec. 31, 2019

Investments, Debt and Equity Securities [Abstract]

Equity Investments

Equity Investments

The Company has an equity investment in GDS, a developer and operator of high-performance, large-scale data centers in China. We account for our equity investment in GDS using the fair value method. On October 18, 2017, the Company purchased newly issued unregistered ordinary shares equivalent to 8.0 million American depository shares (ADS) at a price per Class A ordinary share equivalent to $12.45 per ADS, a 4% discount to the October 17, 2017 closing price, for a total investment of $100.0 million. Each ADS is equivalent to eight ordinary shares. In April 2019, we sold approximately 5.7 million GDS ADSs for a total sales price of approximately $199.0 million. We continue to hold approximately 2.3 million GDS ADSs. As of December 31, 2019 the ADS Class A ordinary share equivalent was $51.58 per ADS for a total fair value of $118.7 million.

IN MILLIONS	Year Ended December 31, 2019		Year Ended December 31, 2018
Net gain on marketable equity investment	$	132.3	$	9.9
Less: Net gain recognized on marketable equity investment sold	66.7		—
Unrealized gain on marketable equity investment	$	65.6	$	9.9

The gain on investment is recognized in the Consolidated Statements of Operations in gain on marketable equity investment.

On October 8, 2018, the Company made an $11.9 million investment in exchange for a 10% equity interest in ODATA Brasil S.A. and ODATA Colombia S.A.S. (collectively "ODATA"). ODATA, a Brazilian headquartered company, specializes in providing colocation services to wholesale customers, such as hyperscale cloud providers, financial services and telecommunications companies, and also to enterprises across multiple industries. On October 30, 2018, the Company made an additional investment totaling $0.7 million in ODATA Colombia S.A.S ("ODATA Colombia"). In connection with these investments, CyrusOne and ODATA entered into a commercial agreement covering leasing activity with CyrusOne customers in the ODATA portfolio. In addition, our Chief Technology Officer joined the ODATA board of directors in October 2018. In evaluating the appropriate accounting method for its investment in ODATA, the Company considered its right to appoint a director to the ODATA board of directors, as well as other relevant factors, in evaluating the Company’s ability to exercise significant influence over the operating and financial policies of ODATA and concluded that the investment should be accounted for under the cost method. During the year ended December 31, 2019, the Company made additional investments totaling $3.8 million in ODATA.

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Description of Business

12 Months Ended

Dec. 31, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Description of Business

Description of Business

CyrusOne Inc., together with CyrusOne GP (the "General Partner"), a wholly-owned subsidiary of CyrusOne Inc., through which CyrusOne Inc. wholly owns CyrusOne LP (the "Operating Partnership") and the subsidiaries of the Operating Partnership (collectively, “CyrusOne”, “we”, “us”, “our”, and the “Company”) is an owner, operator and developer of enterprise-class, carrier-neutral, multi-tenant and single-tenant data center properties. As of December 31, 2019, all of the issued and outstanding Operating Partnership units of CyrusOne LP are owned, directly or indirectly, by the Company. Our customers operate in a number of industries, including information technology, financial services, energy, oil and gas, mining, medical, research and consulting services, and consumer goods and services. We currently operate 49 data centers, including two recovery centers, located in the United States, United Kingdom, Germany and Singapore.

On January 24, 2013, the Company completed its initial public offering (the "IPO") of common stock and its common stock currently trades on the NASDAQ Exchange under the ticker symbol "CONE".

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Revenue Recognition

12 Months Ended

Dec. 31, 2019

Revenue from Contract with Customer [Abstract]

Revenue Recognition

Revenue Recognition

Lease Revenue

Lease revenue primarily consists of colocation rent and metered power reimbursements from the lease of our data centers. Colocation leases may include all or portions of a data center, where customers may also lease office space to support their colocation operations. Revenue is primarily based on power usage as well as square footage. Customer lease arrangements customarily contain provisions that allow for renewal or continuation on a month-to-month arrangement, and certain leases contain early termination rights. We do not include any of these extension or termination options in a customer’s lease term for lease classification purposes or for recognizing lease revenue unless we are reasonably certain the customer will exercise these extension or termination options at lease commencement. At lease commencement, early termination is generally not deemed probable due to the significant economic penalty incurred by the lessee to exercise its early termination right and to relocate their equipment installed in our facilities. Generally, our customer lease arrangements do not provide any option to purchase and are classified as operating leases.

At December 31, 2019, the future minimum lease payments to be received for the next five years under non-cancellable operating leases, excluding month-to-month arrangements and metered power reimbursements are shown below:

IN MILLIONS
2020	$	736.2
2021	620.2
2022	528.2
2023	426.5
2024	328.7
Thereafter	973.9
Total	$	3,613.7

Disclosures related to periods prior to adoption of the New Accounting Standard for Leases

The future minimum lease payments as of December 31, 2018 to be received under non-cancellable operating leases, excluding month-to-month arrangements and metered power reimbursements are shown below:

IN MILLIONS
2019	$	647.6
2020	553.7
2021	453.0
2022	365.5
2023	284.4
Thereafter	835.9
Total	$	3,140.1

Revenue from Contracts with Customers

Revenue from equipment sales and the installation of customer equipment is recognized at a point-in-time. Title to such assets are transferred to the customer, and the benefits of the installation service are typically consumed at the completion of the service.

Disaggregation of Revenue

For the year ended December 31, 2019, lease revenue disaggregated by primary revenue stream is as follows (in millions):

Lease revenue	Year Ended December 31, 2019
Colocation (Minimum lease payments)	$	793.5
Metered power reimbursements (Variable lease payments)	138.8
Total lease revenue	$	932.3

For the years ended December 31, 2019 and 2018 revenue from contracts with customers disaggregated by primary revenue stream is as follows (in millions):

Revenue from contracts with customers	Year Ended December 31, 2019		Year Ended December 31, 2018
Equipment sales and services	$	29.7	$	15.3
Other revenue	19.3		17.4
Total revenue from contracts with customers	$	49.0	$	32.7

Other revenue from contracts with customers includes $15.9 million and $13.5 million of revenue from managed services for the years ended December 31, 2019 and 2018, respectively. Total revenues from contracts with customers generated from operations outside of the United States were $2.9 million for the year ended December 31, 2019 and insignificant for the year ended December 31, 2018.

The balances from managed services customers accounts receivables were $6.4 million and $9.4 million as of December 31, 2019 and 2018, respectively. Contract assets and liabilities were not material as of both December 31, 2019 and 2018.

The Company had revenue of $981.3 million and $821.4 million for the years ended December 31, 2019 and 2018, respectively. One customer represented approximately 21% and 18% of our revenue for the years ended December 31, 2019 and 2018, respectively.

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Debt - Credit facilities (Details)		1 Months Ended		9 Months Ended	12 Months Ended
	Mar. 29, 2018 USD ($) tranche	Apr. 30, 2019 USD ($)	Aug. 31, 2018 USD ($)	Sep. 30, 2019	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Aug. 31, 2018 EUR (€)	Mar. 31, 2018 USD ($)
Line of Credit Facility [Line Items]
Loss on early extinguishment of debt					$ 71,800,000	$ 3,100,000	$ 36,500,000
Letters of credit outstanding					8,200,000
$3 Billion Credit Facility
Line of Credit Facility [Line Items]
Credit facility, available capacity under accordion feature	$ 3,800,000,000
$3 Billion Credit Facility | Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity	3,000,000,000.0				3,000,000,000.0
Borrowings used to retire debt	1,000,000,000.0
Remaining borrowing capacity					1,100,000,000
$1.7 Billion Revolving Credit Facility | Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity	1,700,000,000		$ 1,700,000,000		1,700,000,000
Multicurrency borrowing sublimit	$ 750,000,000.0
Borrowings on line of credit					$ 615,000,000.0
Option to extend maturity of debt, period	1 year			1 year
Commitment fee (as a percent)					0.25%
Commitment fee upon greater utilization (as a percent)					0.25%
2023 Term Loan
Line of Credit Facility [Line Items]
Debt instrument, term	5 years
2025 Term Loan
Line of Credit Facility [Line Items]
Debt instrument, term	7 years
$2 Billion Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity							2,000,000,000.0
$2 Billion Credit Facility | Revolving Credit Facility
Line of Credit Facility [Line Items]
Borrowings on line of credit							900,000,000.0
Loss on early extinguishment of debt							3,100,000
$1.1 Billion Revolving Credit Facility | Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity					$ 1,100,000,000		$ 1,100,000,000
2021 Term Loan
Line of Credit Facility [Line Items]
Debt instrument, term							5 years
2022 Term Loan
Line of Credit Facility [Line Items]
Debt instrument, term							7 years
Construction facility
Line of Credit Facility [Line Items]
Debt instrument, term			6 years
Debt principal amount | €								€ 100,000,000.0
Second Amended and Restated Credit Agreement | Revolving Credit Facility
Line of Credit Facility [Line Items]
Facility fee					2,600,000	3,800,000	$ 1,900,000
Term Loan
Line of Credit Facility [Line Items]
Borrowings on line of credit			$ 174,500,000
Term Loan | 2023 Term Loan
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 1,000,000,000.0
Borrowings on line of credit					800,000,000.0	1,000,000,000.0			$ 700,000,000.0
Proceeds from delayed draw term loan	$ 300,000,000.0		$ 300,000,000.0
Delayed draw feature, number of tranches | tranche	3
Delayed draw feature, period	6 months
Proceeds from sale of GDS shares used to pay down term loan		$ 200,000,000.0
Term Loan | 2025 Term Loan
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 300,000,000.0
Borrowings on line of credit					300,000,000.0	$ 300,000,000.0
Remaining borrowing capacity					$ 0
Term Loan | 2021 Term Loan
Line of Credit Facility [Line Items]
Borrowings on line of credit							250,000,000.0
Term Loan | 2022 Term Loan
Line of Credit Facility [Line Items]
Borrowings on line of credit							$ 650,000,000.0

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Income (Loss) per Share - Narrative (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions				12 Months Ended
	Nov. 20, 2019	Dec. 28, 2018	Sep. 28, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Formation [Line Items]
Proceeds from sale of stock				$ 357.2	$ 699.6	$ 705.7
Forward sale agreement with Jefferies LLC
Business Formation [Line Items]
Issuance of common stock (in shares)	1.6
Price per share (in dollars per share)	$ 61.67
Public stock offering
Business Formation [Line Items]
Issuance of common stock (in shares)			6.7
Proceeds from sale of stock			$ 397.3
Underwriting discounts and expenses			$ 18.1
Stock issued upon underwriters exercising option to purchase additional shares
Business Formation [Line Items]
Issuance of common stock (in shares)			2.5
Morgan Stanley & Co, LLC | Stock issued upon underwriters exercising option to purchase additional shares
Business Formation [Line Items]
Proceeds from sale of stock		$ 148.2

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Fair Value of Financial Instruments and Hedging Activities - Summary of Derivative Positions (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	$ 1,246.8
Asset	3.5	$ 0.0
Liability	11.4	0.0
Undesignated derivatives | 01/15/2020 | Cross Currency Swaps
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	265.3
Asset	0.0	0.0
Liability	2.1	0.0
Undesignated derivatives | 01/15/2020 | Cross Currency Swaps
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	25.6
Asset	0.0	0.0
Liability	0.2	0.0
Net investment hedge | Designated derivatives | 3/29/2023 | Cross Currency Swaps
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	250.0
Asset	0.0	0.0
Liability	3.8	0.0
Net investment hedge | Designated derivatives | 3/29/2023 | Cross Currency Swaps
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	250.0
Asset	0.0	0.0
Liability	3.9	0.0
Net investment hedge | Designated derivatives | 1/15/2020 | Cross Currency Swaps
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	155.9
Asset	0.0	0.0
Liability	1.4	0.0
Interest rate hedge - Float to fixed | Designated derivatives | 3/29/2023 | Interest Rate Swaps
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	300.0
Asset	3.5	0.0
Liability	$ 0.0	$ 0.0

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Goodwill, Intangible and Other Long-Lived Assets - Carrying Value of Major Classes of Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 403.6	$ 402.6
Accumulated Amortization	(207.5)	(166.9)
Total	$ 196.1	235.7
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted- Average Remaining Life (in years)	10 years
Gross Carrying Amount	$ 247.1	247.1
Accumulated Amortization	(151.1)	(137.9)
Total	$ 96.0	109.2
Trademark/tradename
Finite-Lived Intangible Assets [Line Items]
Weighted- Average Remaining Life (in years)	4 years
Gross Carrying Amount	$ 11.5	11.5
Accumulated Amortization	(7.8)	(6.7)
Total	$ 3.7	4.8
Favorable leasehold interest
Finite-Lived Intangible Assets [Line Items]
Weighted- Average Remaining Life (in years)	35 years
Gross Carrying Amount	$ 5.6	5.7
Accumulated Amortization	(1.2)	(0.7)
Total	$ 4.4	5.0
In-place customer leases
Finite-Lived Intangible Assets [Line Items]
Weighted- Average Remaining Life (in years)	5 years
Gross Carrying Amount	$ 137.1	136.0
Accumulated Amortization	(46.7)	(21.1)
Total	$ 90.4	114.9
Above and below market leases
Finite-Lived Intangible Assets [Line Items]
Weighted- Average Remaining Life (in years)	6 years
Gross Carrying Amount	$ 2.3	2.3
Accumulated Amortization	(0.7)	(0.5)
Total	$ 1.6	$ 1.8

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Investment in Real Estate - Narrative (Details) - USD ($)		12 Months Ended
	Aug. 24, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Real Estate Properties [Line Items]
Construction in progress, land under active development		$ 61,800,000	$ 69,100,000
Cost of construction in progress		946,300,000	744,900,000	$ 487,100,000
Capital expenditures		876,400,000	1,328,500,000
Impairment losses		700,000	0	$ 58,000,000.0
Other developments primarily in Chicago, Cincinnati, Dallas, Northern Virginia, Phoenix and San Antonio
Real Estate Properties [Line Items]
Payments for other developments			$ 865,700,000
Dublin, Ireland, San Antonio, Santa Clara and Council Bluffs | Land
Real Estate Properties [Line Items]
Land purchases included in capital expenditures		$ 54,700,000
Zenium Topco Ltd. | Data Centers
Real Estate Properties [Line Items]
Payments for other developments	$ 462,800,000

XML

Debt - Financial debt covenants (Details) - USD ($)	Dec. 31, 2019	Mar. 29, 2018
Revolving Credit Facility | $3 Billion Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 3,000,000,000.0	$ 3,000,000,000.0

XML

Summary of Significant Accounting Policies (Details)	3 Months Ended								12 Months Ended
	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2019 USD ($) segment	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Impairment losses									$ 700,000	$ 0	$ 58,000,000.0
Rent and other receivables	$ 291,900,000				$ 234,900,000				$ 291,900,000	234,900,000
Number of business segments | segment									1
Revenue	253,900,000	$ 250,900,000	$ 251,500,000	$ 225,000,000.0	221,300,000	$ 206,600,000	$ 196,900,000	$ 196,600,000	$ 981,300,000	821,400,000	672,000,000.0
Net investment in real estate	4,710,300,000				4,293,000,000.0				4,710,300,000	4,293,000,000.0
Proceeds previously combined in proceeds from debt, net									0	1,300,000,000.0	350,000,000.0
Repayments of unsecured term loan									$ 200,000,000.0	$ 900,000,000.0	0
Minimum
Summary Of Significant Accounting Policies [Line Items]
Management service contracts, term									1 year
Maximum
Summary Of Significant Accounting Policies [Line Items]
Management service contracts, term									5 years
Customer 1 | Revenue | Customer concentration risk
Summary Of Significant Accounting Policies [Line Items]
Concentration risk (as a percent)									21.00%	18.00%
Reclassification
Summary Of Significant Accounting Policies [Line Items]
Proceeds previously combined in proceeds from debt, net										$ 1,988,300,000	2,558,400,000
Repayments of unsecured term loan										1,547,400,000	$ 1,749,800,000
Straight-line rent receivable, net
Summary Of Significant Accounting Policies [Line Items]
Rent and other receivables	$ 156,800,000				128,700,000				$ 156,800,000	128,700,000
Straight-line rent receivable, net | Reclassification
Summary Of Significant Accounting Policies [Line Items]
Rent and other receivables					$ 128,700,000					$ 128,700,000

XML

Revenue Recognition - Future Minimum Lease Payments to be Received, Excluding Month-to-Month Arrangements and Metered Power Reimbursements (Details) $ in Millions	Dec. 31, 2018 USD ($)
Revenue from Contract with Customer [Abstract]
2019	$ 647.6
2020	553.7
2021	453.0
2022	365.5
2023	284.4
Thereafter	835.9
Total	$ 3,140.1

XML

Schedule III. Real Estate Properties and Accumulated Depreciation - Schedule of Real Estate Properties (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Initial Costs
Land	$ 146.4
Building and Improvements	602.2
Equipment	594.2
Cost Capitalized Subsequent to Acquisition
Land	1.2
Building and Improvements	1,159.2
Equipment	2,433.9
Gross Carrying Amount
Land	147.6	$ 118.5
Building and Improvements	1,761.4	1,677.5
Equipment	3,028.2	2,630.2
Accumulated Depreciation	1,379.2	1,054.5	$ 782.4	$ 578.5
Land held for future development	206.0	176.4
Aggregate cost of the total properties for federal income tax purposes	7,088.2
Construction in progress, including land under development	946.3	744.9	$ 487.1
Austin II
Initial Costs
Land	2.0
Building and Improvements	0.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	23.5
Equipment	13.3
Gross Carrying Amount
Land	2.0	2.0
Building and Improvements	23.5	23.4
Equipment	13.3	8.7
Accumulated Depreciation	19.7
Austin III
Initial Costs
Land	3.3
Building and Improvements	0.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	12.6
Equipment	64.0
Gross Carrying Amount
Land	3.3	3.3
Building and Improvements	12.6	11.7
Equipment	64.0	47.0
Accumulated Depreciation	16.7
Chicago - Aurora I
Initial Costs
Land	2.4
Building and Improvements	26.0
Equipment	97.3
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	6.4
Equipment	39.0
Gross Carrying Amount
Land	2.4	2.4
Building and Improvements	32.4	32.4
Equipment	136.3	132.9
Accumulated Depreciation	57.2
Chicago - Aurora II
Initial Costs
Land	2.6
Building and Improvements	0.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	22.9
Equipment	70.3
Gross Carrying Amount
Land	2.6	2.6
Building and Improvements	22.9	22.6
Equipment	70.3	68.6
Accumulated Depreciation	14.6
Chicago - Aurora Tower
Initial Costs
Land	0.0
Building and Improvements	0.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	6.4
Equipment	0.9
Gross Carrying Amount
Land	0.0	0.0
Building and Improvements	6.4	4.9
Equipment	0.9	0.4
Accumulated Depreciation	0.5
Chicago - Lombard
Initial Costs
Land	0.7
Building and Improvements	3.2
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	1.5
Equipment	8.1
Gross Carrying Amount
Land	0.7	0.7
Building and Improvements	4.7	4.7
Equipment	8.1	8.1
Accumulated Depreciation	8.6
Cincinnati - 7th Street
Initial Costs
Land	0.9
Building and Improvements	42.2
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	71.9
Equipment	37.2
Gross Carrying Amount
Land	0.9	0.9
Building and Improvements	114.1	114.1
Equipment	37.2	37.4
Accumulated Depreciation	99.5
Cincinnati - Blue Ash
Initial Costs
Land	0.0
Building and Improvements	2.6
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	(1.9)
Equipment	0.2
Gross Carrying Amount
Land	0.0	0.0
Building and Improvements	0.7	0.7
Equipment	0.2	0.2
Accumulated Depreciation	0.6
Cincinnati - Hamilton
Initial Costs
Land	0.0
Building and Improvements	9.5
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	34.2
Equipment	7.8
Gross Carrying Amount
Land	0.0	0.0
Building and Improvements	43.7	43.7
Equipment	7.8	7.9
Accumulated Depreciation	33.6
Cincinnati - Mason
Initial Costs
Land	0.0
Building and Improvements	0.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	20.3
Equipment	1.7
Gross Carrying Amount
Land	0.0	0.0
Building and Improvements	20.3	20.3
Equipment	1.7	1.7
Accumulated Depreciation	15.8
Cincinnati - Northern Cincinnati
Initial Costs
Land	0.9
Building and Improvements	12.3
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	65.5
Equipment	16.0
Gross Carrying Amount
Land	0.9	0.9
Building and Improvements	77.8	77.9
Equipment	16.0	12.4
Accumulated Depreciation	47.7
Dallas - Allen
Initial Costs
Land	6.5
Building and Improvements	0.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	15.0
Equipment	39.5
Gross Carrying Amount
Land	6.5	0.0
Building and Improvements	15.0	0.0
Equipment	39.5	0.0
Accumulated Depreciation	2.9
Dallas - Carrollton
Initial Costs
Land	16.1
Building and Improvements	0.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	63.8
Equipment	323.3
Gross Carrying Amount
Land	16.1	16.1
Building and Improvements	63.8	62.2
Equipment	323.3	272.5
Accumulated Depreciation	133.6
Dallas - Lewisville
Initial Costs
Land	0.0
Building and Improvements	46.2
Equipment	2.2
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	11.9
Equipment	38.9
Gross Carrying Amount
Land	0.0	0.0
Building and Improvements	58.1	76.8
Equipment	41.1	39.6
Accumulated Depreciation	69.4
Florence
Initial Costs
Land	2.2
Building and Improvements	7.7
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	34.3
Equipment	8.7
Gross Carrying Amount
Land	2.2	2.2
Building and Improvements	42.0	42.0
Equipment	8.7	8.4
Accumulated Depreciation	36.8
Frankfurt I
Initial Costs
Land	4.0
Building and Improvements	31.0
Equipment	109.7
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	5.0
Equipment	13.9
Gross Carrying Amount
Land	4.0	4.1
Building and Improvements	36.0	35.7
Equipment	123.7	124.9
Accumulated Depreciation	13.7
Frankfurt II
Initial Costs
Land	7.0
Building and Improvements	0.0
Equipment	47.7
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	135.1
Equipment	45.9
Gross Carrying Amount
Land	7.0	7.1
Building and Improvements	135.1	89.8
Equipment	93.6	53.9
Accumulated Depreciation	12.4
Houston - Galleria
Initial Costs
Land	0.0
Building and Improvements	56.0
Equipment	2.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	15.0
Equipment	22.4
Gross Carrying Amount
Land	0.0	0.0
Building and Improvements	71.0	71.0
Equipment	24.4	20.2
Accumulated Depreciation	60.1
Houston - Houston West I
Initial Costs
Land	1.4
Building and Improvements	21.4
Equipment	0.1
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	63.8
Equipment	51.5
Gross Carrying Amount
Land	1.4	1.4
Building and Improvements	85.2	85.2
Equipment	51.6	51.1
Accumulated Depreciation	90.6
Houston - Houston West II
Initial Costs
Land	2.0
Building and Improvements	0.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.7
Building and Improvements	22.8
Equipment	52.0
Gross Carrying Amount
Land	2.7	2.7
Building and Improvements	22.8	22.9
Equipment	52.0	50.9
Accumulated Depreciation	39.1
Houston - Houston West III
Initial Costs
Land	7.1
Building and Improvements	0.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.1
Building and Improvements	18.1
Equipment	32.3
Gross Carrying Amount
Land	7.2	7.2
Building and Improvements	18.1	18.0
Equipment	32.3	31.4
Accumulated Depreciation	13.6
London - Great Bridgewater
Initial Costs
Land	0.0
Building and Improvements	16.5
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	(16.5)
Equipment	1.3
Gross Carrying Amount
Land	0.0	0.0
Building and Improvements	0.0	26.8
Equipment	1.3	1.2
Accumulated Depreciation	1.0
London I
Initial Costs
Land	0.0
Building and Improvements	25.3
Equipment	20.5
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	19.0
Equipment	25.9
Gross Carrying Amount
Land	0.0	0.0
Building and Improvements	44.3	34.1
Equipment	46.4	26.3
Accumulated Depreciation	6.5
London II
Initial Costs
Land	0.0
Building and Improvements	19.9
Equipment	58.7
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	22.9
Equipment	34.6
Gross Carrying Amount
Land	0.0	0.0
Building and Improvements	42.8	25.2
Equipment	93.3	74.8
Accumulated Depreciation	17.4
Northern Virginia - Sterling I
Initial Costs
Land	6.9
Building and Improvements	0.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	20.2
Equipment	62.2
Gross Carrying Amount
Land	6.9	6.9
Building and Improvements	20.2	20.2
Equipment	62.2	60.4
Accumulated Depreciation	31.1
Northern Virginia - Sterling II
Initial Costs
Land	0.0
Building and Improvements	0.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	28.8
Equipment	112.4
Gross Carrying Amount
Land	0.0	0.0
Building and Improvements	28.8	28.8
Equipment	112.4	112.4
Accumulated Depreciation	36.7
Northern Virginia - Sterling III
Initial Costs
Land	0.0
Building and Improvements	0.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	22.3
Equipment	61.8
Gross Carrying Amount
Land	0.0	0.0
Building and Improvements	22.3	22.2
Equipment	61.8	61.3
Accumulated Depreciation	18.8
Northern Virginia - Sterling IV
Initial Costs
Land	4.6
Building and Improvements	9.6
Equipment	0.1
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	10.5
Equipment	78.0
Gross Carrying Amount
Land	4.6	4.6
Building and Improvements	20.1	20.0
Equipment	78.1	76.0
Accumulated Depreciation	20.5
Northern Virginia - Sterling V
Initial Costs
Land	14.5
Building and Improvements	0.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	81.7
Equipment	303.7
Gross Carrying Amount
Land	14.5	14.5
Building and Improvements	81.7	80.8
Equipment	303.7	295.8
Accumulated Depreciation	56.6
Northern Virginia - Sterling VI
Initial Costs
Land	9.7
Building and Improvements	0.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	60.2
Equipment	196.9
Gross Carrying Amount
Land	9.7	0.0
Building and Improvements	60.2	0.0
Equipment	196.9	77.5
Accumulated Depreciation	19.5
Northern Virginia - Sterling VIII
Initial Costs
Land	9.1
Building and Improvements	0.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	7.0
Equipment	28.0
Gross Carrying Amount
Land	9.1	0.0
Building and Improvements	7.0	0.0
Equipment	28.0	0.0
Accumulated Depreciation	2.0
Norwalk I
Initial Costs
Land	0.0
Building and Improvements	18.3
Equipment	25.3
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	(16.6)
Equipment	(14.7)
Gross Carrying Amount
Land	0.0	0.0
Building and Improvements	1.7	13.6
Equipment	10.6	10.1
Accumulated Depreciation	4.5
Phoenix - Chandler I
Initial Costs
Land	10.5
Building and Improvements	0.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	58.3
Equipment	71.5
Gross Carrying Amount
Land	10.5	10.5
Building and Improvements	58.3	58.3
Equipment	71.5	68.7
Accumulated Depreciation	53.5
Phoenix - Chandler II
Initial Costs
Land	0.0
Building and Improvements	0.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	16.2
Equipment	39.8
Gross Carrying Amount
Land	0.0	0.0
Building and Improvements	16.2	16.2
Equipment	39.8	39.4
Accumulated Depreciation	24.2
Phoenix - Chandler III
Initial Costs
Land	0.0
Building and Improvements	0.9
Equipment	2.5
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	10.5
Equipment	48.8
Gross Carrying Amount
Land	0.0	0.0
Building and Improvements	11.4	11.4
Equipment	51.3	50.8
Accumulated Depreciation	16.7
Phoenix - Chandler IV
Initial Costs
Land	0.0
Building and Improvements	0.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	18.4
Equipment	44.3
Gross Carrying Amount
Land	0.0	0.0
Building and Improvements	18.4	18.4
Equipment	44.3	43.3
Accumulated Depreciation	11.6
Phoenix - Chandler V
Initial Costs
Land	0.0
Building and Improvements	0.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	12.1
Equipment	54.6
Gross Carrying Amount
Land	0.0	0.0
Building and Improvements	12.1	10.7
Equipment	54.6	53.4
Accumulated Depreciation	9.3
Phoenix - Chandler VI
Initial Costs
Land	2.3
Building and Improvements	0.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.1
Building and Improvements	23.3
Equipment	101.7
Gross Carrying Amount
Land	2.4	2.4
Building and Improvements	23.3	23.3
Equipment	101.7	100.3
Accumulated Depreciation	20.8
Phoenix - Chandler VII
Initial Costs
Land	4.2
Building and Improvements	0.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	0.8
Equipment	0.4
Gross Carrying Amount
Land	4.2	0.0
Building and Improvements	0.8	0.0
Equipment	0.4	0.0
Accumulated Depreciation	0.0
Raleigh-Durham I
Initial Costs
Land	2.1
Building and Improvements	73.5
Equipment	71.3
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	6.3
Equipment	8.7
Gross Carrying Amount
Land	2.1	2.1
Building and Improvements	79.8	79.8
Equipment	80.0	75.4
Accumulated Depreciation	34.4
San Antonio I
Initial Costs
Land	4.6
Building and Improvements	3.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	28.7
Equipment	36.3
Gross Carrying Amount
Land	4.6	4.6
Building and Improvements	31.7	31.7
Equipment	36.3	35.3
Accumulated Depreciation	35.5
San Antonio II
Initial Costs
Land	6.7
Building and Improvements	0.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.3
Building and Improvements	30.3
Equipment	61.0
Gross Carrying Amount
Land	7.0	7.0
Building and Improvements	30.3	30.3
Equipment	61.0	60.8
Accumulated Depreciation	24.4
San Antonio III
Initial Costs
Land	0.0
Building and Improvements	0.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	40.2
Equipment	99.5
Gross Carrying Amount
Land	0.0	0.0
Building and Improvements	40.2	40.2
Equipment	99.5	99.0
Accumulated Depreciation	29.9
San Antonio IV
Initial Costs
Land	0.0
Building and Improvements	0.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	56.3
Equipment	50.6
Gross Carrying Amount
Land	0.0	0.0
Building and Improvements	56.3	42.1
Equipment	50.6	48.2
Accumulated Depreciation	13.6
Santa Clara II
Initial Costs
Land	0.0
Building and Improvements	2.7
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	0.0
Equipment	0.0
Gross Carrying Amount
Land	0.0	0.0
Building and Improvements	2.7	0.0
Equipment	0.0	0.0
Accumulated Depreciation	1.1
Somerset I
Initial Costs
Land	12.1
Building and Improvements	124.6
Equipment	83.3
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	7.5
Equipment	18.5
Gross Carrying Amount
Land	12.1	12.1
Building and Improvements	132.1	125.8
Equipment	101.8	91.0
Accumulated Depreciation	43.2
South Bend - Monroe
Initial Costs
Land	0.0
Building and Improvements	0.0
Equipment	0.0
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	1.9
Equipment	0.3
Gross Carrying Amount
Land	0.0	0.0
Building and Improvements	1.9	2.5
Equipment	0.3	0.4
Accumulated Depreciation	2.0
Stamford - Omega
Initial Costs
Land	0.0
Building and Improvements	3.2
Equipment	0.6
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	(3.1)
Equipment	0.2
Gross Carrying Amount
Land	0.0	0.0
Building and Improvements	0.1	2.6
Equipment	0.8	0.7
Accumulated Depreciation	0.7
Stamford - Riverbend
Initial Costs
Land	0.0
Building and Improvements	4.3
Equipment	13.2
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	(3.4)
Equipment	(4.6)
Gross Carrying Amount
Land	0.0	0.0
Building and Improvements	0.9	2.9
Equipment	8.6	7.8
Accumulated Depreciation	6.9
Totowa - Commerce
Initial Costs
Land	0.0
Building and Improvements	4.1
Equipment	0.8
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	(3.7)
Equipment	0.9
Gross Carrying Amount
Land	0.0	0.0
Building and Improvements	0.4	4.1
Equipment	1.7	1.7
Accumulated Depreciation	0.9
Totowa - Madison
Initial Costs
Land	0.0
Building and Improvements	28.3
Equipment	45.6
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	(22.2)
Equipment	14.5
Gross Carrying Amount
Land	0.0	0.0
Building and Improvements	6.1	28.5
Equipment	60.1	57.7
Accumulated Depreciation	33.0
Wappinger Falls I
Initial Costs
Land	0.0
Building and Improvements	9.9
Equipment	13.3
Cost Capitalized Subsequent to Acquisition
Land	0.0
Building and Improvements	(6.8)
Equipment	9.9
Gross Carrying Amount
Land	0.0	0.0
Building and Improvements	3.1	11.3
Equipment	23.2	$ 22.0
Accumulated Depreciation	$ 16.2

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Recently Issued Accounting Standards (Tables)

12 Months Ended

Dec. 31, 2019

Accounting Changes and Error Corrections [Abstract]

Impact of Adoption of the Lease Standard

The table below reflects the impact of adoption of the lease standard on our Consolidated Balance Sheets as of December 31, 2019 and 2018 (in millions) related to previously reported BTS leases:

Impact to the Consolidated Balance Sheets:	As of December 31, 2019		As of December 31, 2018
Buildings and improvements, net of accumulated depreciation	$	—	$	77.4
Operating lease right-of-use assets, net of amortization	44.9		—
Finance lease liabilities	—		123.3
Operating lease liabilities, net of accretion	77.9		—

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Subsequent Event

12 Months Ended

Dec. 31, 2019

Subsequent Events [Abstract]

Subsequent Event

Subsequent Event

On January 22, 2020, the Issuers closed their previously announced offering of €500.0 million aggregate principal amount of 1.450% Senior Notes due 2027 (the “2027 Notes”).

The 2027 Notes have been registered under the Securities Act of 1933, as amended (the “Securities Act”), pursuant to a shelf registration statement on Form S- 3 (File No. 333-231203), as supplemented by the prospectus supplement dated January 15, 2020, filed with the SEC under the Securities Act.

The 2027 Notes are unsecured senior obligations of the Issuers, which rank equally in right of payment with all of the Issuers’ existing and future unsecured senior debt and senior in right of payment to all of the Issuers’ future subordinated debt, if any. The 2027 Notes will be effectively subordinated to any of the Issuers’ future secured debt, if any, to the extent of the value of the assets securing such debt. The 2027 Notes will be guaranteed on a senior unsecured basis by CyrusOne Inc., the sole beneficial owner and sole trustee of CyrusOne GP, which is the sole general partner of CyrusOne LP. The guarantees will rank equally in right of payment with all of CyrusOne Inc.’s existing and future unsecured senior debt and senior in right of payment to all of CyrusOne Inc.’s future subordinated debt, if any. The guarantees will be effectively subordinated to any of CyrusOne Inc.’s future secured debt to the extent of the value of the assets securing such debt. In addition, the 2027 Notes will be structurally subordinated to the liabilities of any subsidiaries of CyrusOne LP (other than CyrusOne Finance Corp.). The guarantees will be structurally subordinated to the liabilities of any subsidiaries of CyrusOne Inc. (other than the Issuers).

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Basis of Presentation

12 Months Ended

Dec. 31, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Basis of Presentation

The accompanying financial statements are prepared on a consolidated basis. In addition, the accompanying financial statements have been prepared in accordance with generally accepted accounting principles in the U.S. (GAAP) and include the accounts of the Company, as well as all wholly-owned subsidiaries and any consolidated variable interest entities. All intercompany transactions and balances have been eliminated in consolidation.

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Leases - As a Lessee

12 Months Ended

Dec. 31, 2019

Leases [Abstract]

Leases - As a Lessee

Leases - As a Lessee

ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. ROU assets and lease liabilities are recognized at the lease commencement date based on the estimated present value of lease payments over the lease term. Variable lease payments consisting of non-lease components and services are excluded from the ROU assets and lease liabilities and are recognized in the period in which the obligation is incurred.

The new accounting standard for leases defines initial direct costs as only the incremental costs of signing a lease. Initial direct costs related to leasing that are not incremental are expensed as general and administrative expense in our Consolidated Statements of Operations. As a result of electing the package of practical expedients, initial direct costs incurred prior to the effective date have not been reassessed.

Our operating lease agreements primarily consist of leased real estate and are included within operating lease ROU assets and operating lease liabilities on the Consolidated Balance Sheets. Many of our lease agreements include options to extend the lease, which are not included in our minimum lease payments unless they are reasonably certain to be exercised at lease commencement. Rental expense related to operating leases is recognized on a straight-line basis over the lease term.

We operate five data center facilities and have a data center under development subject to finance leases. During the third quarter of 2019, the Company entered into one ground lease in Dublin, the Republic of Ireland for a term of 999 years (see Note 7, Acquisitions and Purchases of Fixed Assets, for more information). The Dublin finance lease was capitalized as land and included in Construction in progress, including land under development on the Consolidated Balance Sheets. The remaining term of our data center finance leases range from two to twenty-one years with options to extend the initial lease term on all but one lease. As a result of electing the package of practical expedients, data center finance leases are included in buildings and improvements, equipment and finance lease liabilities in our Consolidated Balance Sheets consistent with the presentation under ASC 840 in the prior year. In addition, we lease 12 data centers and 4 offices supporting our sales and corporate activities under operating lease agreements. Our operating leases have remaining lease terms ranging from one to twenty-five years and one ground lease in Houston has a lease term that expires in 2066.

The components of lease expense are as follows (in millions):

	Year Ended December 31, 2019
Operating lease cost	$	20.3
Finance lease cost:
Amortization of assets	2.3
Interest on lease liabilities	1.7
Total net lease cost	$	24.3

Supplemental balance sheet information related to leases is as follows (in millions, except lease term and discount rate):

	December 31, 2019
Operating leases:
Operating lease right-of-use assets	$	161.9
Operating lease liabilities	$	195.8
Finance leases:
Property and equipment, at cost	$	34.9
Accumulated amortization	(5.0		)
Property and equipment, net	$	29.9
Finance lease liabilities	$	31.8
Weighted average remaining lease term (in years):
Operating leases	15.8
Finance leases(a)	18.1
Weighted average discount rate:
Operating leases	3.9		%
Finance leases(a)	4.9		%

(a) Excludes the 999-year ground lease in Dublin, the Republic of Ireland.

Supplemental cash flow and other information related to leases is as follows (in millions):

	Year Ended December 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	22.1
Operating cash flows from finance leases	1.7
Financing cash flows from finance leases	2.9
Non-cash right-of-use assets obtained in exchange for lease liabilities:
Operating leases	$	175.1
Finance leases	0.8

Maturities of lease liabilities were as follows (in millions):

	As of December 31, 2019
	Operating Leases			Finance Leases
2020	$	22.4		$	5.0
2021	21.0			4.1
2022	22.4			2.9
2023	18.5			1.9
2024	13.9			1.4
Thereafter	165.4			31.1
Total lease payments	$	263.6		$	46.4
Less: Imputed interest	(67.8		)	(14.6		)
Total lease obligations	$	195.8		$	31.8

Disclosures related to periods prior to adoption of the New Accounting Standard for Leases

The following table summarizes aggregate minimum principal payments of the finance lease obligations and future minimum lease payments required under operating leases for the five years subsequent to December 31, 2018, and thereafter (in millions):

	Operating Leases		Capital Leases		Lease Financing Arrangements
2019	$	5.0	$	2.7	$	15.0
2020	4.9		2.8		27.6
2021	3.7		2.9		11.4
2022	3.7		2.0		11.6
2023	3.5		1.0		10.0
Thereafter	43.4		22.0		89.1
Total lease payments	$	64.2	$	33.4	$	164.7

Leases - As a Lessee

Leases - As a Lessee

ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. ROU assets and lease liabilities are recognized at the lease commencement date based on the estimated present value of lease payments over the lease term. Variable lease payments consisting of non-lease components and services are excluded from the ROU assets and lease liabilities and are recognized in the period in which the obligation is incurred.

The new accounting standard for leases defines initial direct costs as only the incremental costs of signing a lease. Initial direct costs related to leasing that are not incremental are expensed as general and administrative expense in our Consolidated Statements of Operations. As a result of electing the package of practical expedients, initial direct costs incurred prior to the effective date have not been reassessed.

Our operating lease agreements primarily consist of leased real estate and are included within operating lease ROU assets and operating lease liabilities on the Consolidated Balance Sheets. Many of our lease agreements include options to extend the lease, which are not included in our minimum lease payments unless they are reasonably certain to be exercised at lease commencement. Rental expense related to operating leases is recognized on a straight-line basis over the lease term.

We operate five data center facilities and have a data center under development subject to finance leases. During the third quarter of 2019, the Company entered into one ground lease in Dublin, the Republic of Ireland for a term of 999 years (see Note 7, Acquisitions and Purchases of Fixed Assets, for more information). The Dublin finance lease was capitalized as land and included in Construction in progress, including land under development on the Consolidated Balance Sheets. The remaining term of our data center finance leases range from two to twenty-one years with options to extend the initial lease term on all but one lease. As a result of electing the package of practical expedients, data center finance leases are included in buildings and improvements, equipment and finance lease liabilities in our Consolidated Balance Sheets consistent with the presentation under ASC 840 in the prior year. In addition, we lease 12 data centers and 4 offices supporting our sales and corporate activities under operating lease agreements. Our operating leases have remaining lease terms ranging from one to twenty-five years and one ground lease in Houston has a lease term that expires in 2066.

The components of lease expense are as follows (in millions):

	Year Ended December 31, 2019
Operating lease cost	$	20.3
Finance lease cost:
Amortization of assets	2.3
Interest on lease liabilities	1.7
Total net lease cost	$	24.3

Supplemental balance sheet information related to leases is as follows (in millions, except lease term and discount rate):

	December 31, 2019
Operating leases:
Operating lease right-of-use assets	$	161.9
Operating lease liabilities	$	195.8
Finance leases:
Property and equipment, at cost	$	34.9
Accumulated amortization	(5.0		)
Property and equipment, net	$	29.9
Finance lease liabilities	$	31.8
Weighted average remaining lease term (in years):
Operating leases	15.8
Finance leases(a)	18.1
Weighted average discount rate:
Operating leases	3.9		%
Finance leases(a)	4.9		%

(a) Excludes the 999-year ground lease in Dublin, the Republic of Ireland.

Supplemental cash flow and other information related to leases is as follows (in millions):

	Year Ended December 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	22.1
Operating cash flows from finance leases	1.7
Financing cash flows from finance leases	2.9
Non-cash right-of-use assets obtained in exchange for lease liabilities:
Operating leases	$	175.1
Finance leases	0.8

Maturities of lease liabilities were as follows (in millions):

	As of December 31, 2019
	Operating Leases			Finance Leases
2020	$	22.4		$	5.0
2021	21.0			4.1
2022	22.4			2.9
2023	18.5			1.9
2024	13.9			1.4
Thereafter	165.4			31.1
Total lease payments	$	263.6		$	46.4
Less: Imputed interest	(67.8		)	(14.6		)
Total lease obligations	$	195.8		$	31.8

Disclosures related to periods prior to adoption of the New Accounting Standard for Leases

The following table summarizes aggregate minimum principal payments of the finance lease obligations and future minimum lease payments required under operating leases for the five years subsequent to December 31, 2018, and thereafter (in millions):

	Operating Leases		Capital Leases		Lease Financing Arrangements
2019	$	5.0	$	2.7	$	15.0
2020	4.9		2.8		27.6
2021	3.7		2.9		11.4
2022	3.7		2.0		11.6
2023	3.5		1.0		10.0
Thereafter	43.4		22.0		89.1
Total lease payments	$	64.2	$	33.4	$	164.7

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Goodwill, Intangible and Other Long-Lived Assets

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill, Intangible and Other Long-Lived Assets

Goodwill, Intangible and Other Long-Lived Assets

The carrying amount of goodwill was $455.1 million as of December 31, 2019 and 2018. See Note 7, Acquisition and Purchase of Fixed Assets, for the explanation of changes to intangible assets.

Summarized below are the carrying values for the major classes of intangible assets:

IN MILLIONS
For the year ended December 31,		2019							2018
	Weighted- Average  Remaining Life (in years)	Gross Carrying Amount		Accumulated Amortization			Total		Gross Carrying Amount		Accumulated Amortization			Total
Customer relationships	10	$	247.1	$	(151.1	)	$	96.0	$	247.1	$	(137.9	)	$	109.2
Trademark/tradename	4	11.5		(7.8		)	3.7		11.5		(6.7		)	4.8
Favorable leasehold interest	35	5.6		(1.2		)	4.4		5.7		(0.7		)	5.0
In-place customer leases	5	137.1		(46.7		)	90.4		136.0		(21.1		)	114.9
Above and below market leases	6	2.3		(0.7		)	1.6		2.3		(0.5		)	1.8
Total		$	403.6	$	(207.5	)	$	196.1	$	402.6	$	(166.9	)	$	235.7

There were no goodwill or intangible asset impairments for the years ended December 31, 2019 or 2018.

Amortization expense for acquired intangible assets was $39.9 million, $30.6 million and $25.1 million for the years ended December 31, 2019, 2018 and 2017, respectively.

The following table presents estimated amortization expense for each of the next five years and thereafter, commencing January 1, 2020:

IN MILLIONS	Total
2020	$	39.3
2021	32.0
2022	28.6
2023	20.7
2024	18.6
Thereafter	56.9
Total	$	196.1

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Employee Benefit Plans

12 Months Ended

Dec. 31, 2019

Retirement Benefits [Abstract]

Employee Benefit Plans

Employee Benefit Plans

Currently, our employees participate in health care plans sponsored by CyrusOne, which provide for medical, dental and vision. We incurred $3.9 million, $3.3 million and $2.7 million of expenses related to these plans for the years ended December 31, 2019, 2018 and 2017, respectively.

CyrusOne offers a defined contribution 401(k) retirement savings plan to its employees. CyrusOne's matching contribution to its retirement savings plan was $1.9 million, $1.8 million and $1.5 million for the years ended December 31, 2019, 2018 and 2017, respectively.

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Related Party Transactions

12 Months Ended

Dec. 31, 2019

Related Party Transactions [Abstract]

Related Party Transactions

Related Party Transactions

The Company has a strategic partnership with GDS, a developer and operator of high-performance, large-scale data centers in the People's Republic of China. In connection with our investment in GDS, the Company entered into an agreement with GDS for the joint marketing of each company’s data centers. Also as a part of the agreement, the Company's Chief Executive Officer joined the board of directors of GDS on June 22, 2018.

For the years ended December 31, 2019 and 2018, the Company incurred $0.5 million and $0.9 million of commission and referral charges payable to GDS, respectively. The commission and referral charges were capitalized as deferred leasing costs and will be amortized over the terms of the respective customer leases. No significant referral expense was recognized by the Company in 2019, 2018 or 2017. We have not recognized any referral revenue related to the agreement with GDS in 2019, 2018 or 2017. See Note 9, Equity Investments, for additional information related to our GDS investment.

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Consolidated Statements of Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Stockholders' Equity [Abstract]
Dividends declared (in dollars per share)	$ 1.92	$ 1.84	$ 1.68

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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Allowance for doubtful accounts receivable	$ 1.8	$ 1.7
Accumulated amortization, net	$ 207.5	$ 166.9
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	100,000,000	100,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares issued (in shares)	114,808,898	108,329,314
Common stock, shares outstanding (in shares)	114,808,898	108,329,314

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Stockholders' Equity - Narrative (Details) - USD ($)					12 Months Ended
	Feb. 19, 2020	Nov. 20, 2019	Dec. 28, 2018	Sep. 28, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Mar. 31, 2018
Subsidiary or Equity Method Investee [Line Items]
Issuance of common stock (in shares)					6,500,000	12,200,000
Average price per share (in dollars per share)					$ 55.43	$ 59.28
Proceeds from sale of stock					$ 357,200,000	$ 699,600,000	$ 705,700,000
Common stock, shares outstanding (in shares)					114,808,898	108,329,314
Dividends payable					$ 58,600,000	$ 51,000,000.0	$ 41,800,000
Dividends declared (in dollars per share)					$ 1.92	$ 1.84	$ 1.68
2018 ATM Stock Offering Program
Subsidiary or Equity Method Investee [Line Items]
Aggregate sales price (up to)								$ 500,000,000.0
New 2018 ATM Stock Offering Program
Subsidiary or Equity Method Investee [Line Items]
Aggregate sales price (up to)						$ 750,000,000.0
Proceeds from sale of stock					$ 355,600,000
Stock issuance costs					4,300,000
Value of shares available for future offerings					$ 290,100,000
Forward sale agreement
Subsidiary or Equity Method Investee [Line Items]
Issuance of common stock (in shares)		1,600,000
Initial forward price (in dollars per share)		$ 61.67
Public stock offering
Subsidiary or Equity Method Investee [Line Items]
Proceeds from sale of stock				$ 397,300,000
Stock issuance costs				$ 18,100,000
Issuance of common stock (in shares)				6,700,000
Over-allotment option
Subsidiary or Equity Method Investee [Line Items]
Issuance of common stock (in shares)				2,500,000
Morgan Stanley & Co, LLC | Over-allotment option
Subsidiary or Equity Method Investee [Line Items]
Proceeds from sale of stock			$ 148,200,000
Forecast
Subsidiary or Equity Method Investee [Line Items]
Dividends declared (in dollars per share)	$ 0.50

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Leases - As a Lessee - Lease Cost (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Leases [Abstract]
Operating lease cost	$ 20.3
Amortization of assets	2.3
Interest on lease liabilities	1.7
Total net lease cost	$ 24.3

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Leases - As a Lessee - Maturities Prior to Adoption of New Accounting Standard (Details) $ in Millions	Dec. 31, 2018 USD ($)
Operating Leases
2019	$ 5.0
2020	4.9
2021	3.7
2022	3.7
2023	3.5
Thereafter	43.4
Total	64.2
Capital Leases
2019	2.7
2020	2.8
2021	2.9
2022	2.0
2023	1.0
Thereafter	22.0
Total	33.4
Lease Financing Arrangements
2019	15.0
2020	27.6
2021	11.4
2022	11.6
2023	10.0
Thereafter	89.1
Total lease payments	$ 164.7

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Stock-Based Compensation - Unvested Stock Options (Details)	12 Months Ended
	Dec. 31, 2019 $ / shares shares
Options
Beginning balance (in shares) | shares	401,223
Granted (in shares) | shares	0
Exercised (in shares) | shares	(25,586)
Forfeited or expired (in shares) | shares	(551)
Ending balance (in shares) | shares	375,086
Exercisable (in shares) | shares	375,086
Vested and expected to vest (in shares) | shares	375,086
Weighted Average Exercise Price
Beginning balance (in dollars per share) | $ / shares	$ 31.96
Granted (in dollars per share) | $ / shares	0
Exercised (in dollars per share) | $ / shares	36.70
Forfeited or expired (in dollars per share) | $ / shares	23.58
Ending balance (in dollars per share) | $ / shares	31.64
Exercisable (in dollars per share) | $ / shares	31.64
Vested and expected to vest (in dollars per share) | $ / shares	$ 31.64

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Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income tax at U.S. federal statutory income tax rate	$ 7.9	$ 0.4	$ (28.2)
State and local taxes, net of federal income tax benefit	1.7	2.0	1.8
Impact of REIT status	(13.7)	(2.1)	28.6
Permanent differences	(0.7)	(0.1)	0.0
Foreign tax rate and currency differences	(1.0)	0.2	0.0
Anti-hybrid disallowances	1.6	0.1	0.0
Valuation allowance	0.5	0.1	0.8
Income tax (benefit) expense	$ (3.7)	$ 0.6	$ 3.0

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Investment in Real Estate - Schedule of Gross Investment in Real Estate (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Real Estate Properties [Line Items]
Land	$ 147.6	$ 118.5
Building and Improvements	1,761.4	1,677.5
Equipment	3,028.2	2,630.2
Land held for future development	206.0	176.4
Austin II
Real Estate Properties [Line Items]
Land	2.0	2.0
Building and Improvements	23.5	23.4
Equipment	13.3	8.7
Austin III
Real Estate Properties [Line Items]
Land	3.3	3.3
Building and Improvements	12.6	11.7
Equipment	64.0	47.0
Chicago - Aurora I
Real Estate Properties [Line Items]
Land	2.4	2.4
Building and Improvements	32.4	32.4
Equipment	136.3	132.9
Chicago - Aurora II
Real Estate Properties [Line Items]
Land	2.6	2.6
Building and Improvements	22.9	22.6
Equipment	70.3	68.6
Chicago - Aurora Tower
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	6.4	4.9
Equipment	0.9	0.4
Chicago - Lombard
Real Estate Properties [Line Items]
Land	0.7	0.7
Building and Improvements	4.7	4.7
Equipment	8.1	8.1
Cincinnati - 7th Street
Real Estate Properties [Line Items]
Land	0.9	0.9
Building and Improvements	114.1	114.1
Equipment	37.2	37.4
Cincinnati - Blue Ash
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	0.7	0.7
Equipment	0.2	0.2
Cincinnati - Goldcoast
Real Estate Properties [Line Items]
Land	0.0	0.2
Building and Improvements	0.0	4.0
Equipment	0.0	0.1
Cincinnati - Hamilton
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	43.7	43.7
Equipment	7.8	7.9
Cincinnati - Mason
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	20.3	20.3
Equipment	1.7	1.7
Cincinnati - Northern Cincinnati
Real Estate Properties [Line Items]
Land	0.9	0.9
Building and Improvements	77.8	77.9
Equipment	16.0	12.4
Dallas - Allen
Real Estate Properties [Line Items]
Land	6.5	0.0
Building and Improvements	15.0	0.0
Equipment	39.5	0.0
Dallas - Carrollton
Real Estate Properties [Line Items]
Land	16.1	16.1
Building and Improvements	63.8	62.2
Equipment	323.3	272.5
Dallas - Lewisville
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	58.1	76.8
Equipment	41.1	39.6
Florence
Real Estate Properties [Line Items]
Land	2.2	2.2
Building and Improvements	42.0	42.0
Equipment	8.7	8.4
Frankfurt I
Real Estate Properties [Line Items]
Land	4.0	4.1
Building and Improvements	36.0	35.7
Equipment	123.7	124.9
Frankfurt II
Real Estate Properties [Line Items]
Land	7.0	7.1
Building and Improvements	135.1	89.8
Equipment	93.6	53.9
Houston - Galleria
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	71.0	71.0
Equipment	24.4	20.2
Houston - Houston West I
Real Estate Properties [Line Items]
Land	1.4	1.4
Building and Improvements	85.2	85.2
Equipment	51.6	51.1
Houston - Houston West II
Real Estate Properties [Line Items]
Land	2.7	2.7
Building and Improvements	22.8	22.9
Equipment	52.0	50.9
Houston - Houston West III
Real Estate Properties [Line Items]
Land	7.2	7.2
Building and Improvements	18.1	18.0
Equipment	32.3	31.4
London - Great Bridgewater
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	0.0	26.8
Equipment	1.3	1.2
London I
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	44.3	34.1
Equipment	46.4	26.3
London II
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	42.8	25.2
Equipment	93.3	74.8
Northern Virginia - Sterling I
Real Estate Properties [Line Items]
Land	6.9	6.9
Building and Improvements	20.2	20.2
Equipment	62.2	60.4
Northern Virginia - Sterling II
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	28.8	28.8
Equipment	112.4	112.4
Northern Virginia - Sterling III
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	22.3	22.2
Equipment	61.8	61.3
Northern Virginia - Sterling IV
Real Estate Properties [Line Items]
Land	4.6	4.6
Building and Improvements	20.1	20.0
Equipment	78.1	76.0
Northern Virginia - Sterling V
Real Estate Properties [Line Items]
Land	14.5	14.5
Building and Improvements	81.7	80.8
Equipment	303.7	295.8
Northern Virginia - Sterling VI
Real Estate Properties [Line Items]
Land	9.7	0.0
Building and Improvements	60.2	0.0
Equipment	196.9	77.5
Northern Virginia - Sterling VIII
Real Estate Properties [Line Items]
Land	9.1	0.0
Building and Improvements	7.0	0.0
Equipment	28.0	0.0
Norwalk I
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	1.7	13.6
Equipment	10.6	10.1
Phoenix - Chandler I
Real Estate Properties [Line Items]
Land	10.5	10.5
Building and Improvements	58.3	58.3
Equipment	71.5	68.7
Phoenix - Chandler II
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	16.2	16.2
Equipment	39.8	39.4
Phoenix - Chandler III
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	11.4	11.4
Equipment	51.3	50.8
Phoenix - Chandler IV
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	18.4	18.4
Equipment	44.3	43.3
Phoenix - Chandler V
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	12.1	10.7
Equipment	54.6	53.4
Phoenix - Chandler VI
Real Estate Properties [Line Items]
Land	2.4	2.4
Building and Improvements	23.3	23.3
Equipment	101.7	100.3
Phoenix - Chandler VII
Real Estate Properties [Line Items]
Land	4.2	0.0
Building and Improvements	0.8	0.0
Equipment	0.4	0.0
Raleigh-Durham I
Real Estate Properties [Line Items]
Land	2.1	2.1
Building and Improvements	79.8	79.8
Equipment	80.0	75.4
San Antonio I
Real Estate Properties [Line Items]
Land	4.6	4.6
Building and Improvements	31.7	31.7
Equipment	36.3	35.3
San Antonio II
Real Estate Properties [Line Items]
Land	7.0	7.0
Building and Improvements	30.3	30.3
Equipment	61.0	60.8
San Antonio III
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	40.2	40.2
Equipment	99.5	99.0
San Antonio IV
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	56.3	42.1
Equipment	50.6	48.2
Santa Clara II
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	2.7	0.0
Equipment	0.0	0.0
Singapore - Inter Business Park
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	0.0	0.0
Equipment	0.0	0.0
Somerset I
Real Estate Properties [Line Items]
Land	12.1	12.1
Building and Improvements	132.1	125.8
Equipment	101.8	91.0
South Bend - Crescent
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	0.0	1.7
Equipment	0.0	0.2
South Bend - Monroe
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	1.9	2.5
Equipment	0.3	0.4
Stamford - Omega
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	0.1	2.6
Equipment	0.8	0.7
Stamford - Riverbend
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	0.9	2.9
Equipment	8.6	7.8
Totowa - Commerce
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	0.4	4.1
Equipment	1.7	1.7
Totowa - Madison
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	6.1	28.5
Equipment	60.1	57.7
Wappinger Falls I
Real Estate Properties [Line Items]
Land	0.0	0.0
Building and Improvements	3.1	11.3
Equipment	$ 23.2	$ 22.0

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Income Taxes - Narrative (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Aug. 24, 2018
Income Taxes [Line Items]
Deferred tax liability	$ 60,500,000	$ 68,900,000
Valuation allowance	7,600,000	$ 6,900,000
Liability for unrecognized tax benefit	$ 0
Zenium Data Centers
Income Taxes [Line Items]
Deferred tax liability			$ 72,700,000

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Income (Loss) per Share (Tables)

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Computation of Basic and Diluted Net (Loss) Income Per Share

The following table reflects the computation of basic and diluted net (loss) income per share:

IN MILLIONS, except per share amounts	Year Ended						Year Ended						Year Ended
For December 31,	2019						2018						2017
	Basic			Diluted			Basic			Diluted			Basic			Diluted
Numerator:
Net income (loss)	$	41.4		$	41.4		$	1.2		$	1.2		$	(83.5	)	$	(83.5	)
Less: Restricted stock dividends	(0.7		)	(0.7		)	(1.1		)	(1.1		)	(0.9		)	(0.9		)
Net income (loss) available to stockholders	$	40.7		$	40.7		$	0.1		$	0.1		$	(84.4	)	$	(84.4	)
Denominator:
Weighted average common outstanding-basic	112.1			112.1			99.8			99.8			88.9			88.9
Performance-based restricted stock and units(1)				0.4						0.6						—
Weighted average shares outstanding-diluted				112.5						100.4						88.9
EPS:
Net income (loss) per share-basic	$	0.36					$	—					$	(0.95	)
Effect of dilutive shares:
Net income (loss) per share-diluted				$	0.36					$	—					$	(0.95	)

⁽¹⁾ We have excluded 0.4 million weighted average shares of restricted stock, and 0.1 million of weighted average stock options which are securities convertible into common stock from our diluted earnings per share as of December 31, 2017. These amounts were deemed anti-dilutive.

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Goodwill, Intangible and Other Long-Lived Assets (Tables)

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Carrying Value of Major Classes of Intangible Assets

Summarized below are the carrying values for the major classes of intangible assets:

IN MILLIONS
For the year ended December 31,		2019							2018
	Weighted- Average  Remaining Life (in years)	Gross Carrying Amount		Accumulated Amortization			Total		Gross Carrying Amount		Accumulated Amortization			Total
Customer relationships	10	$	247.1	$	(151.1	)	$	96.0	$	247.1	$	(137.9	)	$	109.2
Trademark/tradename	4	11.5		(7.8		)	3.7		11.5		(6.7		)	4.8
Favorable leasehold interest	35	5.6		(1.2		)	4.4		5.7		(0.7		)	5.0
In-place customer leases	5	137.1		(46.7		)	90.4		136.0		(21.1		)	114.9
Above and below market leases	6	2.3		(0.7		)	1.6		2.3		(0.5		)	1.8
Total		$	403.6	$	(207.5	)	$	196.1	$	402.6	$	(166.9	)	$	235.7

Schedule of Estimated Amortization Expense for Finite-Lived Intangible Assets

The following table presents estimated amortization expense for each of the next five years and thereafter, commencing January 1, 2020:

IN MILLIONS	Total
2020	$	39.3
2021	32.0
2022	28.6
2023	20.7
2024	18.6
Thereafter	56.9
Total	$	196.1

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Guarantors - Consolidating Statements of Operations and Comprehensive Income (Loss) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Condensed Income Statements, Captions [Line Items]
Revenue	$ 253,900,000	$ 250,900,000	$ 251,500,000	$ 225,000,000.0	$ 221,300,000	$ 206,600,000	$ 196,900,000	$ 196,600,000	$ 981,300,000	$ 821,400,000	$ 672,000,000.0
Total operating expenses									914,300,000	731,700,000	647,900,000
Operating income	22,300,000	13,200,000	19,700,000	11,800,000	14,800,000	20,200,000	27,000,000.0	27,700,000	67,000,000.0	89,700,000	24,100,000
Interest (expense) income, net									(82,000,000.0)	(94,700,000)	(68,100,000)
Gain on marketable equity investment									132,300,000	9,900,000	0
Loss on early extinguishment of debt									700,000	0	58,000,000.0
Foreign currency and derivative losses, net									(7,500,000)	0	0
Other expense									(300,000)	0	0
Loss on early extinguishment of debt									(71,800,000)	(3,100,000)	(36,500,000)
Net income (loss) before income taxes									37,700,000	1,800,000	(80,500,000)
Income tax benefit									3,700,000	(600,000)	(3,000,000.0)
Equity earnings (loss) related to investment in subsidiaries									0	0	0
Net income (loss)	$ (52,100,000)	$ 12,600,000	$ (8,500,000)	$ 89,400,000	$ (105,800,000)	$ (42,400,000)	$ 105,900,000	$ 43,500,000	41,400,000	1,200,000	(83,500,000)
Other comprehensive income (loss)									11,100,000	(10,900,000)	75,500,000
Comprehensive income (loss)									52,500,000	(9,700,000)	(8,000,000.0)
Eliminations/Consolidations
Condensed Income Statements, Captions [Line Items]
Revenue									0	0	0
Total operating expenses									0	0	0
Operating income									0	0	0
Interest (expense) income, net									32,900,000	19,200,000	10,700,000
Gain on marketable equity investment									0	0
Foreign currency and derivative losses, net									0
Other expense									0
Loss on early extinguishment of debt									0	0	0
Net income (loss) before income taxes									32,900,000	19,200,000	10,700,000
Income tax benefit									0	0	0
Equity earnings (loss) related to investment in subsidiaries									(233,800,000)	(55,600,000)	(70,500,000)
Net income (loss)									(200,900,000)	(36,400,000)	(59,800,000)
Other comprehensive income (loss)									0	0	0
Comprehensive income (loss)									(200,900,000)	(36,400,000)	(59,800,000)
Parent Guarantor
Condensed Income Statements, Captions [Line Items]
Revenue									0	0	0
Total operating expenses									0	0	0
Operating income									0	0	0
Interest (expense) income, net									0	0	0
Gain on marketable equity investment									0	0
Foreign currency and derivative losses, net									0
Other expense									0
Loss on early extinguishment of debt									0	0	0
Net income (loss) before income taxes									0	0	0
Income tax benefit									0	0	0
Equity earnings (loss) related to investment in subsidiaries									19,600,000	(28,900,000)	(18,700,000)
Net income (loss)									19,600,000	(28,900,000)	(18,700,000)
Other comprehensive income (loss)									0	0	0
Comprehensive income (loss)									19,600,000	(28,900,000)	(18,700,000)
LP Co-issuer
Condensed Income Statements, Captions [Line Items]
Revenue									0	0	0
Total operating expenses									0	0	0
Operating income									0	0	0
Interest (expense) income, net									(114,500,000)	(110,600,000)	(76,200,000)
Gain on marketable equity investment									0	0
Foreign currency and derivative losses, net									(7,500,000)
Other expense									0
Loss on early extinguishment of debt									(71,800,000)	(3,100,000)	(36,500,000)
Net income (loss) before income taxes									(193,800,000)	(113,700,000)	(112,700,000)
Income tax benefit									0	0	0
Equity earnings (loss) related to investment in subsidiaries									214,100,000	84,800,000	94,000,000.0
Net income (loss)									20,300,000	(28,900,000)	(18,700,000)
Other comprehensive income (loss)									(700,000)	0	0
Comprehensive income (loss)									19,600,000	(28,900,000)	(18,700,000)
Finance Co-issuer
Condensed Income Statements, Captions [Line Items]
Revenue									0	0	0
Total operating expenses									0	0	0
Operating income									0	0	0
Interest (expense) income, net									0	0	0
Gain on marketable equity investment									0	0
Foreign currency and derivative losses, net									0
Other expense									0
Loss on early extinguishment of debt									0	0	0
Net income (loss) before income taxes									0	0	0
Income tax benefit									0	0	0
Equity earnings (loss) related to investment in subsidiaries									0	0	0
Net income (loss)									0	0	0
Other comprehensive income (loss)									0	0	0
Comprehensive income (loss)									0	0	0
Guarantor Subsidiaries
Condensed Income Statements, Captions [Line Items]
Revenue									981,300,000	799,700,000	666,400,000
Total operating expenses									914,300,000	700,200,000	640,400,000
Operating income									67,000,000.0	99,500,000	26,000,000.0
Interest (expense) income, net									(400,000)	0	0
Gain on marketable equity investment									132,300,000	0
Foreign currency and derivative losses, net									0
Other expense									(300,000)
Loss on early extinguishment of debt									0	0	0
Net income (loss) before income taxes									198,600,000	99,500,000	26,000,000.0
Income tax benefit									3,700,000	(3,000,000.0)	(3,000,000.0)
Equity earnings (loss) related to investment in subsidiaries									0	0	(4,600,000)
Net income (loss)									202,300,000	96,500,000	18,400,000
Other comprehensive income (loss)									11,800,000	0	0
Comprehensive income (loss)									214,100,000	96,500,000	18,400,000
Non- Guarantors
Condensed Income Statements, Captions [Line Items]
Revenue										21,700,000	5,600,000
Total operating expenses										31,500,000	7,500,000
Operating income										(9,800,000)	(1,900,000)
Interest (expense) income, net										(3,300,000)	(2,600,000)
Gain on marketable equity investment										9,900,000
Loss on early extinguishment of debt										0	0
Net income (loss) before income taxes										(3,200,000)	(4,500,000)
Income tax benefit										2,400,000	0
Equity earnings (loss) related to investment in subsidiaries										0	0
Net income (loss)										(800,000)	(4,500,000)
Other comprehensive income (loss)										(10,900,000)	75,500,000
Comprehensive income (loss)										(11,700,000)	71,000,000.0
General Partner
Condensed Income Statements, Captions [Line Items]
Revenue									0	0	0
Total operating expenses									0	0	0
Operating income									0	0	0
Interest (expense) income, net									0	0	0
Gain on marketable equity investment									0	0
Foreign currency and derivative losses, net									0
Other expense									0
Loss on early extinguishment of debt									0	0	0
Net income (loss) before income taxes									0	0	0
Income tax benefit									0	0	0
Equity earnings (loss) related to investment in subsidiaries									100,000	(300,000)	(200,000)
Net income (loss)									100,000	(300,000)	(200,000)
Other comprehensive income (loss)									0	0	0
Comprehensive income (loss)									$ 100,000	$ (300,000)	$ (200,000)

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Schedule II. Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Allowance for Doubtful Accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning of Period	$ 1.7	$ 2.1	$ 2.1
Charge to Expenses	1.7	2.3	0.2
(Deductions)/Additions	(1.6)	(2.7)	(0.2)
End of Period	1.8	1.7	2.1
Deferred Tax Valuation Allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning of Period	6.9	7.2	6.5
Charge to Expenses	0.7	(0.3)	0.7
(Deductions)/Additions	0.0	0.0	0.0
End of Period	$ 7.6	$ 6.9	$ 7.2