10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

____________________________________

FORM 10-Q

___________________________________

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

For the quarterly period ended March 31, 2024

OR

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

For the transition period    to             

Commission File Number 001-16441

____________________________________

CROWN CASTLE INC.

(Exact name of registrant as specified in its charter)

Delaware	76-0470458
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

8020 Katy Freeway, Houston, Texas 77024

(Address of principal executives office) (Zip Code)

(713) 570-3000

(Registrant's telephone number, including area code)

____________________________________

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

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $0.01 par value	CCI	New York Stock Exchange

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  ☒    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  ☒    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 Exchange Act).    Yes  ☐    No  ☒

Number of shares of common stock outstanding at April 29, 2024: 434,523,224

CROWN CASTLE INC. AND SUBSIDIARIES

INDEX

		Page
PART I—FINANCIAL INFORMATION		3
ITEM 1.	FINANCIAL STATEMENTS	3
	CONDENSED CONSOLIDATED BALANCE SHEET (Unaudited)	3
	CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Unaudited)	4
	CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS (Unaudited)	5
	CONDENSED CONSOLIDATED STATEMENT OF EQUITY (Unaudited)	6
	NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)	7
ITEM 2.	MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS	17
ITEM 3.	QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK	28
ITEM 4.	CONTROLS AND PROCEDURES	29
PART II—OTHER INFORMATION		30
ITEM 1.	LEGAL PROCEEDINGS	30
ITEM 1A.	RISK FACTORS	30
ITEM 5.	OTHER INFORMATION	30
ITEM 6.	EXHIBITS	30
EXHIBIT INDEX		30
SIGNATURES		31

Cautionary Language Regarding Forward-Looking Statements

This Quarterly Report on Form 10-Q ("Form 10-Q") contains forward-looking statements that are based on our management's expectations as of the filing date of this report with the Securities and Exchange Commission ("SEC"). Statements that are not historical facts are hereby identified as forward-looking statements. In addition, words such as "estimate," "anticipate," "project," "plan," "intend," "believe," "expect," "likely," "predicted," "positioned," "continue," "target," "seek," "focus" and any variations of these words and similar expressions are intended to identify forward-looking statements. Examples of forward-looking statements include our full year 2024 outlook and our plans, projections, expectations and estimates regarding (1) the value of our business model and the demand for our communications infrastructure, (2) the growth potential of the U.S. market for shared communications infrastructure, (3) growth in the communications infrastructure industry, (4) demand for data and factors driving such demand, (5) the duration of our construction projects, (6) tenants' investment in wireless networks, (7) use of high-bandwidth applications, (8) our ability to service our debt and comply with debt covenants, (9) the level of commitment under our debt instruments, (10) our ability to remain qualified as a real estate investment trust ("REIT"), (11) site rental revenues, including the growth thereof, (12) sources and uses of liquidity, (13) impact from the Sprint Cancellations (as defined below), (14) drivers of cash flow growth, (15) our competitive advantage, (16) our dividends, including timing, amount, payment or tax characterization, (17) the timing of small cell deployments, (18) discretionary and sustaining capital expenditures and expansion of our business, (19) impact of elevated interest rates, (20) the growth in our business and its driving factors, (21) non-renewals, (22) restructuring activities and the cost reductions, charges, scope, actions and savings associated therewith, including timing, amounts and impact and (23) Fiber segment strategic and operating review. All future dividends are subject to declaration by our board of directors.

Such forward-looking statements should, therefore, be considered in light of various risks, uncertainties and assumptions, including prevailing market conditions, risk factors described in "Item 1A. Risk Factors" of the Annual Report on Form 10-K for the fiscal year ended December 31, 2023 ("2023 Form 10-K") and other factors. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those expected.

Our filings with the SEC are available through the SEC website at www.sec.gov or through our investor relations website at investor.crowncastle.com. We use our investor relations website to disclose information about us that may be deemed to be material. We encourage investors, the media and others interested in us to visit our investor relations website from time to time to review up-to-date information or to sign up for e-mail alerts to be notified when new or updated information is posted on the site.

1

Interpretation

As used herein, the term "including," and any variation thereof, means "including without limitation." The use of the word "or" herein is not exclusive. Unless this Form 10-Q indicates otherwise or the context otherwise requires, the terms "we," "our," "our company," "the company" or "us" as used in this Form 10-Q refer to Crown Castle Inc. ("CCI") and its predecessor (organized in 1995), as applicable, each a Delaware corporation, and their subsidiaries. Additionally, unless the context suggests otherwise, references to "U.S." are to the United States of America and Puerto Rico, collectively. Capitalized terms used but not defined in this Form 10-Q have the same meaning given to them in the 2023 Form 10-K.

2

PART I—FINANCIAL INFORMATION

ITEM 1.FINANCIAL STATEMENTS

CROWN CASTLE INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEET (Unaudited)

(Amounts in millions, except par values)

	March 31, 2024		December 31, 2023
ASSETS
Current assets:
Cash and cash equivalents	$	125	$	105
Restricted cash and cash equivalents	168		171
Receivables, net	380		481
Prepaid expenses	130		103
Current portion of deferred site rental receivables	123		116
Other current assets	51		56
Total current assets	977		1,032
Deferred site rental receivables	2,292		2,239
Property and equipment, net of accumulated depreciation of $14,600 and $14,279, respectively	15,677		15,666
Operating lease right-of-use assets	5,990		6,187
Goodwill	10,085		10,085
Other intangible assets, net	3,073		3,179
Other assets, net	137		139
Total assets	$	38,231	$	38,527
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable	$	216	$	252
Accrued interest	160		219
Deferred revenues	514		605
Other accrued liabilities	279		342
Current maturities of debt and other obligations	854		835
Current portion of operating lease liabilities	313		332
Total current liabilities	2,336		2,585
Debt and other long-term obligations	22,560		22,086
Operating lease liabilities	5,397		5,561
Other long-term liabilities	1,890		1,914
Total liabilities	32,183		32,146
Commitments and contingencies (note 8)
Stockholders' equity:
Common stock, $0.01 par value; 1,200 shares authorized; shares issued and outstanding:    March 31, 2024—435 and December 31, 2023—434	4		4
Additional paid-in capital	18,310		18,270
Accumulated other comprehensive income (loss)	(5)		(4)
Dividends/distributions in excess of earnings	(12,261)		(11,889)
Total equity	6,048		6,381
Total liabilities and equity	$	38,231	$	38,527

See notes to condensed consolidated financial statements.

3

CROWN CASTLE INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS AND

COMPREHENSIVE INCOME (LOSS) (Unaudited)

(Amounts in millions, except per share amounts)

	Three Months Ended March 31,
	2024		2023
Net revenues:
Site rental	$	1,588	$	1,624
Services and other	53		149
Net revenues	1,641		1,773
Operating expenses:
Costs of operations:(a)
Site rental	430		415
Services and other	34		104
Selling, general and administrative	183		195
Asset write-down charges	6		—
Depreciation, amortization and accretion	439		431
Restructuring charges	11		—
Total operating expenses	1,103		1,145
Operating income (loss)	538		628
Interest expense and amortization of deferred financing costs, net	(226)		(202)
Interest income	4		2
Other income (expense)	2		(3)
Income (loss) before income taxes	318		425
Benefit (provision) for income taxes	(7)		(7)
Net income (loss)	311		418
Other comprehensive income (loss):
Foreign currency translation adjustments	(1)		(1)
Total other comprehensive income (loss)	(1)		(1)
Comprehensive income (loss)	$	310	$	417
Net income (loss), per common share:
Basic	$	0.72	$	0.97
Diluted	$	0.71	$	0.97
Weighted-average common shares outstanding:
Basic	434		433
Diluted	435		434

(a)Exclusive of depreciation, amortization and accretion shown separately.

See notes to condensed consolidated financial statements.

4

CROWN CASTLE INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS (Unaudited)

(In millions of dollars)

	Three Months Ended March 31,
	2024		2023
Cash flows from operating activities:
Net income (loss)	$	311	$	418
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Depreciation, amortization and accretion	439		431
Amortization of deferred financing costs and other non-cash interest	8		7
Stock-based compensation expense, net	38		41
Asset write-down charges	6		—
Deferred income tax (benefit) provision	4		1
Other non-cash adjustments, net	4		2
Changes in assets and liabilities, excluding the effects of acquisitions:
Increase (decrease) in accrued interest	(59)		(51)
Increase (decrease) in accounts payable	(19)		(5)
Increase (decrease) in other liabilities	(160)		(127)
Decrease (increase) in receivables	101		28
Decrease (increase) in other assets	(74)		(139)
Net cash provided by (used for) operating activities	599		606
Cash flows from investing activities:
Capital expenditures	(320)		(341)
Payments for acquisitions, net of cash acquired	(1)		(67)
Other investing activities, net	1		1
Net cash provided by (used for) investing activities	(320)		(407)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	—		999
Principal payments on debt and other long-term obligations	(14)		(19)
Borrowings under revolving credit facility	—		1,434
Payments under revolving credit facility	(670)		(1,305)
Net issuances (repayments) under commercial paper program	1,138		(524)
Payments for financing costs	—		(10)
Purchases of common stock	(27)		(28)
Dividends/distributions paid on common stock	(688)		(686)
Net cash provided by (used for) financing activities	(261)		(139)
Net increase (decrease) in cash and cash equivalents and restricted cash and cash equivalents	18		60
Effect of exchange rate changes	(1)		1
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	281		327
Cash and cash equivalents and restricted cash and cash equivalents at end of period	$	298	$	388

See notes to condensed consolidated financial statements.

5

CROWN CASTLE INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENT OF EQUITY

(Amounts in millions) (Unaudited)

	Common Stock			Additional Paid-in Capital		Accumulated Other Comprehensive Income (Loss)		Dividends/Distributions in Excess of Earnings
	Shares	($0.01 Par)								Total
Balance, December 31, 2023	434	$	4	$	18,270	$	(4)	$	(11,889)	$	6,381
Stock-based compensation related activity, net of forfeitures	1	—		67		—		—		67
Purchases and retirement of common stock	—	—		(27)		—		—		(27)
Other comprehensive income (loss)(a)	—	—		—		(1)		—		(1)
Common stock dividends/distributions	—	—		—		—		(683)		(683)
Net income (loss)	—	—		—		—		311		311
Balance, March 31, 2024	435	$	4	$	18,310	$	(5)	$	(12,261)	$	6,048
Balance, December 31, 2022	433	$	4	$	18,116	$	(5)	$	(10,666)	$	7,449
Stock-based compensation related activity, net of forfeitures	1	—		66		—		—		66
Purchases and retirement of common stock	—	—		(28)		—		—		(28)
Other comprehensive income (loss)(a)	—	—		—		(1)		—		(1)
Common stock dividends/distributions	—	—		—		—		(681)		(681)
Net income (loss)	—	—		—		—		418		418
Balance, March 31, 2023	434	$	4	$	18,154	$	(6)	$	(10,929)	$	7,223

(a)See the condensed consolidated statement of operations and other comprehensive income (loss) for the components of other comprehensive income (loss).

See notes to condensed consolidated financial statements.

6

CROWN CASTLE INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS-Unaudited

(Tabular dollars in millions, except per share amounts)

1.General

The information contained in the following notes to the condensed consolidated financial statements is condensed from that which would appear in the annual consolidated financial statements; accordingly, the condensed consolidated financial statements included herein should be reviewed in conjunction with the consolidated financial statements for the fiscal year ended December 31, 2023, and related notes thereto, included in the 2023 Form 10-K filed by Crown Castle Inc. ("CCI") with the SEC. Capitalized terms used but not defined in these notes to the condensed consolidated financial statements have the same meaning given to them in the 2023 Form 10-K. References to the "Company" refer to CCI and its predecessor, as applicable, and their subsidiaries, unless otherwise indicated or the context indicates otherwise. As used herein, the term "including," and any variation thereof means "including without limitation." The use of the word "or" herein is not exclusive. Unless the context suggests otherwise, references to "U.S." are to the United States of America and Puerto Rico, collectively.

The Company owns, operates and leases shared communications infrastructure that is geographically dispersed throughout the U.S., including (1) towers and other structures, such as rooftops (collectively, "towers"), and (2) fiber primarily supporting small cell networks ("small cells") and fiber solutions. The Company's towers, small cells and fiber assets are collectively referred to herein as "communications infrastructure," and the Company's customers on its communications infrastructure are referred to herein as "tenants."

The Company's core business is providing access, including space or capacity, to its shared communications infrastructure via long-term contracts in various forms, including lease, license, sublease and service agreements (collectively, "tenant contracts").

The Company's operating segments consist of (1) Towers and (2) Fiber. See note 10.

As part of the Company's effort to provide comprehensive communications infrastructure solutions, as an ancillary business, the Company also offers certain services primarily relating to its Towers segment. For the periods presented, such services predominately consisted of (1) site development services relating to existing or new tenant equipment installations, including: site acquisition, architectural and engineering, or zoning and permitting (collectively, "site development services") and (2) tenant equipment installation or subsequent augmentations (collectively, "installation services"). See note 12 for a discussion of the Company's July 2023 restructuring ("Plan"), which included discontinuing installation services as a Towers product offering.

The Company operates as a REIT for U.S. federal income tax purposes. In addition, the Company has certain taxable REIT subsidiaries ("TRSs"). See note 6.

Approximately 53% of the Company's towers are leased or subleased or operated and managed under master leases, subleases, and other agreements with AT&T and T-Mobile (including those which T-Mobile assumed in its merger with Sprint). The Company has the option to purchase these towers at the end of their respective lease terms. The Company has no obligation to exercise such purchase options.

Basis of Presentation

The condensed consolidated financial statements included herein are unaudited; however, they include all adjustments (consisting only of normal recurring adjustments) which, in the opinion of management, are necessary to state fairly the condensed consolidated financial position of the Company as of March 31, 2024, the condensed consolidated results of operations for the three months ended March 31, 2024 and 2023, and the condensed consolidated cash flows for the three months ended March 31, 2024 and 2023. The year-end condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by GAAP. The results of operations for the interim periods presented are not necessarily indicative of the results to be expected for the full year.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities as of the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

7

CROWN CASTLE INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS-Unaudited (Continued)

(Tabular dollars in millions, except per share amounts)

2.Summary of Significant Accounting Policies

Recently Adopted Accounting Pronouncements

No accounting pronouncements adopted during the three months ended March 31, 2024 had a material impact on the Company's condensed consolidated financial statements.

Recent Accounting Pronouncements Not Yet Adopted

In November 2023, the FASB issued new guidance that is designed to improve reportable segment disclosure requirements, primarily through enhanced disclosure of significant segment expenses. The new guidance also expands interim segment disclosure requirements and requires disclosure of the position and title of the Company's chief operating decision-maker. The guidance will be effective for the Company's fiscal year ending December 31, 2024 and for interim periods starting in the first quarter of fiscal year 2025 with early adoption permitted. The guidance is required to be applied retrospectively to each prior reporting period presented. The Company is currently evaluating the effect of the guidance, including the impact on its consolidated financial statements and related disclosures.

In December 2023, the FASB issued new guidance that enhances the transparency and decision usefulness of income tax disclosures, primarily through changes to the rate reconciliation and income taxes paid disclosures. The guidance will be effective for the Company's fiscal year ending December 31, 2025, and can be applied prospectively or retrospectively, with early adoption permitted. The Company is currently evaluating the effect of the guidance, including the impact on its consolidated financial statements and related disclosures.

3.Revenues

Site Rental Revenues

The Company generates site rental revenues from its core business by providing tenants with access, including space or capacity, to its shared communications infrastructure via long-term tenant contracts in various forms, including lease, license, sublease and service agreements. Typically, providing such access over the length of the tenant contract term represents the Company’s sole performance obligation under its tenant contracts.

Site rental revenues from the Company's tenant contracts are recognized on a straight-line, ratable basis over the fixed, non-cancelable term of the relevant tenant contract, which generally ranges between five to 15 years for wireless tenants and one to 20 years for fiber solutions tenants (including from organizations with high-bandwidth and multi-location demands), regardless of whether the payments from the tenant are received in equal monthly amounts during the life of the tenant contract. Certain of the Company's tenant contracts contain (1) fixed escalation clauses (such as fixed dollar or fixed percentage increases) or inflation-based escalation clauses (such as those tied to the CPI), (2) multiple renewal periods exercisable at the tenant's option and (3) only limited termination rights at the applicable tenant's option through the current term. If the payment terms call for fixed escalators, upfront payments, or rent-free periods, the revenue is recognized on a straight-line basis over the fixed, non-cancelable term of the tenant contract. When calculating straight-line rental revenues, the Company considers all fixed elements of tenant contractual escalation provisions, even if such escalation provisions contain a variable element in addition to a minimum. The Company's assets related to straight-line site rental revenues are recorded within "Current portion of deferred site rental receivables" and "Deferred site rental receivables" on the Company's condensed consolidated balance sheet. Amounts billed or received prior to being earned are deferred and reflected in "Deferred revenues" and "Other long-term liabilities" on the Company's condensed consolidated balance sheet. Amounts to which the Company has an unconditional right to payment, which are related to both satisfied or partially satisfied performance obligations, are recorded within "Receivables, net" on the Company's condensed consolidated balance sheet.

Payments Associated with Sprint Cancellations.

For the three months ended March 31, 2024 and 2023, site rental revenues include $3 million and $48 million, respectively, of payments in the Company's Fiber segment to satisfy the remaining rental obligations of certain canceled Sprint leases as a result of the T-Mobile US, Inc. and Sprint network consolidation.

Services and Other Revenues

As part of the Company’s effort to provide comprehensive communications infrastructure solutions, as an ancillary business, the Company offers certain services primarily relating to its Towers segment, predominately consisting of (1) site development services and (2) installation services. See note 12 for a discussion of the Company's restructuring Plan, which

8

CROWN CASTLE INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS-Unaudited (Continued)

(Tabular dollars in millions, except per share amounts)

included discontinuing installation services as a Towers product offering. Upon contract commencement, the Company assesses its services to tenants and identifies performance obligations for each promise to provide a distinct service.

The Company may have multiple performance obligations for site development services, which primarily include: structural analysis, zoning, permitting and construction drawings. For each of these performance obligations, services revenues are recognized at completion of the applicable performance obligation, which represents the point at which the Company believes it has transferred goods or services to the tenant. The services revenue recognized is based on an allocation of the transaction price among the performance obligations in a respective tenant contract based on estimated standalone selling price. The volume and mix of site development services may vary among tenant contracts and may include a combination of some or all of the above performance obligations. Amounts are billed per contractual milestones, with payments generally due within 45 to 90 days, and generally do not contain variable-consideration provisions. The transaction price for the Company's tower installation services consists of amounts for (1) permanent improvements to the Company's towers that represent a lease component and (2) the performance of the service. Amounts under the Company's tower installation service agreements that represent a lease component are recognized as site rental revenues on a straight-line basis over the length of the associated estimated lease term. For the performance of the installation service, the Company has one performance obligation, which is satisfied at the time of the applicable installation or augmentation and recognized as services and other revenues on the Company's condensed consolidated statement of operations and comprehensive income (loss). Since performance obligations are typically satisfied prior to receiving payment from tenants, the unconditional right to payment is recorded within "Receivables, net" on the Company’s condensed consolidated balance sheet. Generally, the services the Company provides to its tenants have a duration of one year or less.

Additional Information on Revenues

As of January 1, 2024 and March 31, 2024, $2.1 billion and $2.0 billion of unrecognized revenues, respectively, were reported in "Deferred revenues" and "Other long-term liabilities" on the Company's condensed consolidated balance sheet. During the three months ended March 31, 2024, approximately $139 million of the January 1, 2024 unrecognized revenues balance was recognized as revenues. As of January 1, 2023, $2.3 billion of unrecognized revenues were reported in "Deferred revenues" and "Other long-term liabilities" on the Company's condensed consolidated balance sheet. During the three months ended March 31, 2023, approximately $166 million of the January 1, 2023 unrecognized revenues balance was recognized as revenues.

The following table is a summary of the contracted amounts owed to the Company by tenants pursuant to tenant contracts in effect as of March 31, 2024.

	Nine Months Ending December 31,		Years Ending December 31,
	2024		2025		2026		2027		2028		Thereafter		Total
Contracted amounts(a)	$	3,826	$	4,804	$	4,653	$	4,545	$	4,330	$	15,966	$	38,124

(a)Based on the nature of the contract, tenant contracts are accounted for pursuant to relevant lease accounting (ASC 842) or revenue accounting (ASC 606) guidance. Excludes amounts related to services, as those contracts generally have a duration of one year or less.

See note 10 for further information regarding the Company's operating segments.

9

CROWN CASTLE INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS-Unaudited (Continued)

(Tabular dollars in millions, except per share amounts)

4.Debt and Other Obligations

The table below sets forth the Company's debt and other obligations as of March 31, 2024.

	Original Issue Date		Final Maturity Date(a)		Balance as of March 31, 2024			Balance as of December 31, 2023		Stated Interest Rate as of March 31, 2024(a)(b)
Secured Notes, Series 2009-1, Class A-2	July 2009		Aug. 2029		$	38		$	40	9.0	%
Tower Revenue Notes, Series 2015-2	May 2015		May 2045	(c)	699			698		3.7	%
Tower Revenue Notes, Series 2018-2	July 2018		July 2048	(c)	746			746		4.2	%
Finance leases and other obligations	Various	(d)	Various	(d)	287			270		Various		(d)
Total secured debt					1,770			1,754
2016 Revolver	Jan. 2016		July 2027		—		(e)	670		N/A		(f)
2016 Term Loan A	Jan. 2016		July 2027		1,162			1,162		6.4	%	(f)
Commercial Paper Notes	Various	(g)	Various	(g)	1,138		(g)	—		5.9	%
3.200% Senior Notes	Aug. 2017		Sept. 2024		750			749		3.2	%
1.350% Senior Notes	June 2020		July 2025		498			498		1.4	%
4.450% Senior Notes	Feb. 2016		Feb. 2026		898			898		4.5	%
3.700% Senior Notes	May 2016		June 2026		748			748		3.7	%
1.050% Senior Notes	Feb. 2021		July 2026		995			994		1.1	%
4.000% Senior Notes	Feb. 2017		Mar. 2027		498			498		4.0	%
2.900% Senior Notes	Mar. 2022		Mar. 2027		744			744		2.9	%
3.650% Senior Notes	Aug. 2017		Sept. 2027		997			997		3.7	%
5.000% Senior Notes	Jan. 2023		Jan. 2028		992			991		5.0	%
3.800% Senior Notes	Jan. 2018		Feb. 2028		995			995		3.8	%
4.800% Senior Notes	Apr. 2023		Sept. 2028		594			594		4.8	%
4.300% Senior Notes	Feb. 2019		Feb. 2029		595			595		4.3	%
5.600% Senior Notes	Dec. 2023		June 2029		741			740		5.6	%
3.100% Senior Notes	Aug. 2019		Nov. 2029		546			546		3.1	%
3.300% Senior Notes	Apr. 2020		July 2030		741			741		3.3	%
2.250% Senior Notes	June 2020		Jan. 2031		1,092			1,091		2.3	%
2.100% Senior Notes	Feb. 2021		Apr. 2031		991			990		2.1	%
2.500% Senior Notes	June 2021		July 2031		743			743		2.5	%
5.100% Senior Notes	Apr. 2023		May 2033		743			743		5.1	%
5.800% Senior Notes	Dec. 2023		Mar. 2034		742			740		5.8	%
2.900% Senior Notes	Feb. 2021		Apr. 2041		1,235			1,234		2.9	%
4.750% Senior Notes	May 2017		May 2047		344			344		4.8	%
5.200% Senior Notes	Feb. 2019		Feb. 2049		396			396		5.2	%
4.000% Senior Notes	Aug. 2019		Nov. 2049		346			346		4.0	%
4.150% Senior Notes	Apr. 2020		July 2050		490			490		4.2	%
3.250% Senior Notes	June 2020		Jan. 2051		890			890		3.3	%
Total unsecured debt					21,644			21,167
Total debt and other obligations					23,414			22,921
Less: current maturities of debt and other obligations					854			835
Non-current portion of debt and other long-term obligations					$	22,560		$	22,086

(a)See the 2023 Form 10-K, including note 7 to the consolidated financial statements, for additional information regarding the maturity and principal amortization provisions and interest rates relating to the Company's indebtedness.

(b)Represents the weighted-average stated interest rate, as applicable.

(c)If the Tower Revenue Notes, Series 2015-2 and Series 2018-2 (collectively, "Tower Revenue Notes") are not paid in full on or prior to an applicable anticipated repayment date, then Excess Cash Flow (as defined in the indenture governing the terms of such notes) of the issuers of such notes will be used to repay principal of the applicable series and class of the Tower Revenue Notes, and additional interest (of an additional approximately 5% per annum) will accrue on the respective Tower Revenue Notes. As of March 31, 2024, the Tower Revenue Notes, Series 2015-2 and Series 2018-2 have principal amounts of $700 million and $750 million, with anticipated repayment dates in 2025 and 2028, respectively.

(d)The Company's finance leases and other obligations relate to land, fiber, vehicles, and other assets and bear interest rates up to 10% and mature in periods ranging from less than one year to approximately 25 years.

(e)As of March 31, 2024, the undrawn availability under the Company's senior unsecured revolving credit facility ("2016 Revolver") was $7.0 billion.

10

CROWN CASTLE INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS-Unaudited (Continued)

(Tabular dollars in millions, except per share amounts)

(f)Both the 2016 Revolver and the senior unsecured term loan A facility ("2016 Term Loan A" and, collectively, "2016 Credit Facility") bear interest, at the Company's option, at either (1) Term SOFR plus (i) a credit spread adjustment of 0.10% per annum and (ii) a credit spread ranging from 0.875% to 1.750% per annum or (2) an alternate base rate plus a credit spread ranging from 0.000% to 0.750% per annum, in each case, with the applicable credit spread based on the Company's senior unsecured debt rating. The Company pays a commitment fee ranging from 0.080% to 0.300%, based on the Company's senior unsecured debt rating, per annum on the undrawn available amount under the 2016 Revolver. See the 2023 Form 10-K, including note 7 to the consolidated financial statements, for information regarding potential adjustments to such percentages.

(g)The maturities of the Commercial Paper Notes, when outstanding, may vary but may not exceed 397 days from the date of issue, but there were no Commercial Paper Notes issued or outstanding during the period that had original maturities greater than three months. The Commercial Paper Notes are issued under customary terms in the commercial paper market and are issued at a discount from par or, alternatively, can be issued at par and bear varying interest rates on a fixed or floating basis. At any point in time, the Company intends to maintain available commitments under its 2016 Revolver in an amount at least equal to the amount of Commercial Paper Notes outstanding. While any outstanding Commercial Paper Notes generally have short-term maturities, the Company classifies the outstanding issuances, when applicable, as long-term based on its ability and intent to refinance the outstanding issuances on a long-term basis.

Scheduled Principal Payments and Final Maturities

The following are the scheduled principal payments and final maturities of the total debt and other long-term obligations of the Company outstanding as of March 31, 2024, which do not consider the principal payments that will commence following the anticipated repayment dates on the Tower Revenue Notes.

	Nine Months Ending December 31,			Years Ending December 31,										Total Cash Obligations		Unamortized Adjustments, Net		Total Debt and Other Obligations Outstanding
	2024			2025		2026		2027		2028		Thereafter
Scheduled principal payments and final maturities	$	1,969	(a)	$	603	$	2,780	$	3,251	$	2,630	$	12,343	$	23,576	$	(162)	$	23,414

(a)Predominately consists of outstanding indebtedness under the CP Program as discussed in footnote (g) of the preceding table.

Interest Expense and Amortization of Deferred Financing Costs, Net

The components of interest expense and amortization of deferred financing costs, net are as follows:

	Three Months Ended March 31,
	2024		2023
Interest expense on debt obligations	$	223	$	198
Amortization of deferred financing costs and adjustments on long-term debt	8		7
Capitalized interest	(5)		(3)
Total	$	226	$	202

5.Fair Value Disclosures

	Level in Fair Value Hierarchy	March 31, 2024				December 31, 2023
		Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets:
Cash and cash equivalents	1	$	125	$	125	$	105	$	105
Restricted cash and cash equivalents, current and non-current	1	173		173		176		176
Liabilities:
Total debt and other obligations	2	23,414		21,580		22,921		21,201

The fair values of cash and cash equivalents and restricted cash and cash equivalents approximate the carrying values. The Company determines the fair value of its debt securities based on indicative, non-binding quotes from brokers. Quotes from brokers require judgment and are based on the brokers' interpretation of market information, including implied credit spreads for similar borrowings on recent trades or bid/ask prices or quotes from active markets if available. Since December 31, 2023, there have been no changes in the Company's valuation techniques used to measure fair values.

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CROWN CASTLE INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS-Unaudited (Continued)

(Tabular dollars in millions, except per share amounts)

6.Income Taxes

The Company operates as a REIT for U.S. federal income tax purposes. As a REIT, the Company is generally entitled to a deduction for dividends that it pays and, therefore, is not subject to U.S. federal corporate income tax on its net taxable income that is currently distributed to its stockholders. The Company may be subject to certain federal, state, local and foreign taxes on its income, including (1) taxes on any undistributed income and (2) taxes related to the TRSs. In addition, the Company could, under certain circumstances, be required to pay an excise or penalty tax, which could be significant in amount, in order to utilize one or more relief provisions under the Internal Revenue Code of 1986, as amended, to maintain qualification for taxation as a REIT.

The Company's TRS assets and operations will continue to be subject, as applicable, to federal and state corporate income taxes or to foreign taxes in the jurisdictions in which such assets and operations are located. The Company's foreign assets and operations (including its tower operations in Puerto Rico) are subject to foreign income taxes in the jurisdictions in which such assets and operations are located, regardless of whether they are included in a TRS or not.

For the three months ended March 31, 2024 and 2023, the Company's effective tax rate differed from the federal statutory rate predominately due to the Company's REIT status, including the dividends paid deduction.

7.Per Share Information

Basic net income (loss), per common share, excludes dilution and is computed by dividing net income (loss) by the weighted-average number of common shares outstanding during the period. For the three months ended March 31, 2024 and 2023, diluted net income (loss), per common share, is computed by dividing net income (loss) by the weighted-average number of common shares outstanding during the period, plus any potential dilutive common share equivalents, including shares issuable upon the vesting of restricted stock units ("RSUs") as determined under the treasury stock method.

	Three Months Ended March 31,
	2024		2023
Net income (loss)	$	311	$	418
Weighted-average number of common shares outstanding (in millions):
Basic weighted-average number of common stock outstanding	434		433
Effect of assumed dilution from potential issuance of common shares relating to restricted stock units	1		1
Diluted weighted-average number of common shares outstanding	435		434
Net income (loss), per common share:
Basic	$	0.72	$	0.97
Diluted	$	0.71	$	0.97
Dividends/distributions declared per share of common stock	$	1.565	$	1.565

During the three months ended March 31, 2024, the Company granted one million RSUs to the Company's executives and certain other employees.

8.Commitments and Contingencies

The Company is involved in various claims, assessments, lawsuits or proceedings arising in the ordinary course of business. While there are uncertainties inherent in the ultimate outcome of such matters and it is impossible to presently determine the ultimate costs or losses that may be incurred, if any, management believes the adverse resolution of such uncertainties and the incurrence of such costs should not have a material adverse effect on the Company's condensed consolidated financial position or results of operations. The Company and certain of its subsidiaries are also contingently liable for commitments or performance guarantees arising in the ordinary course of business, including certain letters of credit or surety bonds. In addition, as mentioned in note 1, the Company has the option to purchase approximately 53% of its towers at the end of their respective lease terms. The Company has no obligation to exercise such purchase options.

12

CROWN CASTLE INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS-Unaudited (Continued)

(Tabular dollars in millions, except per share amounts)

9.Equity

Declaration and Payment of Dividends

During the three months ended March 31, 2024, the following dividends/distributions were declared or paid:

Equity Type	Declaration Date	Record Date	Payment Date	Dividends Per Share		Aggregate Payment Amount(a)
Common Stock	February 21, 2024	March 15, 2024	March 28, 2024	$	1.565	$	683

(a)Inclusive of dividends accrued for holders of unvested RSUs, which will be paid when and if the RSUs vest.

Purchases of the Company's Common Stock

For the three months ended March 31, 2024, the Company purchased 0.3 million shares of its common stock utilizing $27 million in cash. The shares of common stock purchased relate to shares withheld in connection with the payment of withholding taxes upon vesting of RSUs.

2021 "At-the-Market" Stock Offering Program

The Company previously maintained an "at-the-market" stock offering program through which it had the right to issue and sell shares of its common stock having an aggregate gross sales price of up to  $750 million ("2021 ATM Program"). The Company terminated its previously outstanding 2021 ATM Program in March 2024 with the entire gross sales price of $750 million remaining unsold.

2024 "At-the-Market" Stock Offering Program

In March 2024, the Company established a new "at-the-market" stock offering program through which it may issue and sell shares of its common stock having an aggregate gross sales price of up to $750 million ("2024 ATM Program"). Sales under the 2024 ATM Program may be made by means of ordinary brokers' transactions on the NYSE or otherwise at market prices prevailing at the time of sale, at prices related to prevailing market prices or, subject to the Company's specific instructions, at negotiated prices. The Company intends to use the net proceeds from any sales under the 2024 ATM Program for general corporate purposes, which may include (1) the funding of future acquisitions or investments or (2) the repayment or repurchase of any outstanding indebtedness. The Company has not sold any shares of common stock under the 2024 ATM Program.

10.Operating Segments

The Company's operating segments consist of (1) Towers and (2) Fiber. The Towers segment provides access, including space or capacity, to the Company's more than 40,000 towers geographically dispersed throughout the U.S. The Towers segment also reflects certain ancillary services relating to the Company's towers, predominately consisting of site development services and installation services. See note 12 for a discussion of the Company's restructuring Plan, which included discontinuing installation services as a Towers product offering. The Fiber segment provides access, including space or capacity, to the Company's approximately (1) 115,000 small cells on air or under contract and (2) 90,000 route miles of fiber primarily supporting small cells and fiber solutions geographically dispersed throughout the U.S.

The measurement of profit or loss used by the Company's chief operating decision maker ("CODM") to evaluate the performance of its operating segments is segment operating profit (loss). Additionally, the Company CODM also reviews segment site rental gross margin and segment services and other gross margin. The Company defines segment operating profit (loss) as segment site rental gross margin plus segment services and other gross margin, and segment other operating (income) expense, less segment selling, general and administrative expenses. The Company defines segment site rental gross margin as segment site rental revenues less segment site rental costs of operations, excluding stock-based compensation expense, net and amortization of prepaid lease purchase price adjustments recorded in consolidated site rental costs of operations. The Company defines segment services and other gross margin as segment services and other revenues less segment services and other costs of operations, excluding stock-based compensation expense, net recorded in consolidated services and other costs of operations. All of these measurements are exclusive of depreciation, amortization and accretion, which are shown separately.

The following tables set forth the Company's segment operating results for the three months ended March 31, 2024 and 2023. Costs that are directly attributable to Towers and Fiber are assigned to those respective segments. Additionally, certain

13

CROWN CASTLE INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS-Unaudited (Continued)

(Tabular dollars in millions, except per share amounts)

costs are shared across segments and are reflected in the Company's segment measures through allocations that management believes to be reasonable. The "Other" column (1) represents amounts excluded from specific segments, such as restructuring charges (credits), asset write-down charges, acquisition and integration costs, depreciation, amortization and accretion, amortization of prepaid lease purchase price adjustments, interest expense and amortization of deferred financing costs, net, gains (losses) on retirement of long-term obligations, interest income, other income (expense), stock-based compensation expense, net and certain selling, general and administrative expenses, and (2) reconciles segment operating profit (loss) to income (loss) before income taxes, as the amounts are not utilized in assessing each segment’s performance. The "Other" total assets balance includes corporate assets such as cash and cash equivalents and restricted cash and cash equivalents which have not been allocated to specific segments. There are no significant revenues resulting from transactions between the Company's operating segments.

	Three Months Ended March 31, 2024								Three Months Ended March 31, 2023
	Towers		Fiber		Other		Total		Towers		Fiber		Other		Total
Segment site rental revenues	$	1,068	$	520			$	1,588	$	1,081	$	543			$	1,624
Segment services and other revenues	46		7				53		146		3				149
Segment revenues	1,114		527				1,641		1,227		546				1,773
Segment site rental costs of operations	239		182				421		234		172				406
Segment services and other costs of operations	28		4				32		99		2				101
Segment costs of operations(a)(b)	267		186				453		333		174				507
Segment site rental gross margin	829		338				1,167		847		371				1,218
Segment services and other gross margin	18		3				21		47		1				48
Segment selling, general and administrative expenses(b)	21		47				68		31		49				80
Segment operating profit (loss)	826		294				1,120		863		323				1,186
Other selling, general and administrative expenses(b)					$	84	84						$	82	82
Stock-based compensation expense, net					38		38						41		41
Depreciation, amortization and accretion					439		439						431		431
Restructuring charges					11		11						—		—
Interest expense and amortization of deferred financing costs, net					226		226						202		202
Other (income) expenses to reconcile to income (loss) before income taxes(c)					4		4						5		5
Income (loss) before income taxes							$	318							$	425
Capital expenditures	$	35	$	273	$	12	$	320	$	50	$	279	$	12	$	341
Total assets (at period end)	$	21,270	$	16,281	$	680	$	38,231	$	22,185	$	16,091	$	778	$	39,054

(a)Exclusive of depreciation, amortization and accretion shown separately.

(b)Segment costs of operations excludes (1) stock-based compensation expense, net of $7 million and $8 million for the three months ended March 31, 2024 and 2023, respectively and (2) prepaid lease purchase price adjustments of $4 million for each of the three months ended March 31, 2024 and 2023. Segment selling, general and administrative expenses and other selling, general and administrative expenses exclude stock-based compensation expense, net of $31 million and $33 million for the three months ended March 31, 2024 and 2023, respectively.

(c)See condensed consolidated statement of operations and comprehensive income (loss) for further information.

14

CROWN CASTLE INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS-Unaudited (Continued)

(Tabular dollars in millions, except per share amounts)

11.Supplemental Cash Flow Information

The following table is a summary of the Company's supplemental cash flow information for the three months ended March 31, 2024 and 2023:

	Three Months Ended March 31,
	2024		2023
Supplemental disclosure of cash flow information:
Cash payments related to operating lease liabilities(a)	$	142	$	142
Interest paid	282		249
Income taxes paid (refunded)	—		(2)
Supplemental disclosure of non-cash operating, investing and financing activities:
ROU assets recorded in exchange for operating lease liabilities	(97)		30
Increase (decrease) in accounts payable for purchases of property and equipment	(15)		2
Capitalized stock-based compensation	7		6
Purchase of property and equipment under finance leases and installment land purchases	25		21

(a)Excludes the Company's contingent payments pursuant to operating leases, which are recorded as expense in the period such contingencies are resolved.

The reconciliation of cash and cash equivalents and restricted cash and cash equivalents reported within various lines on the condensed consolidated balance sheet to amounts reported in the condensed consolidated statement of cash flows is shown below.

	March 31, 2024		December 31, 2023
Cash and cash equivalents	$	125	$	105
Restricted cash and cash equivalents, current	168		171
Restricted cash and cash equivalents reported within other assets, net	5		5
Cash and cash equivalents and restricted cash and cash equivalents	$	298	$	281

12.Restructuring

In July 2023, the Company initiated a restructuring Plan as part of its efforts to reduce costs to better align the Company's operational needs with lower tower activity. The Plan included reducing the Company's total employee headcount by approximately 15%, discontinuing installation services as a Towers product offering while continuing to offer site development services on Company towers, and consolidating office space.

In the first quarter 2024, the Company recorded approximately $11 million of office space consolidation charges in connection with the Plan, inclusive of a $7 million charge related to remaining obligations under facility leases and $4 million of non-cash charges representing accelerated depreciation.

The actions announced in July 2023 associated with the Plan and related charges are expected to be substantially completed and recorded by June 30, 2024, while the payments are expected to be completed for the employee headcount reduction and office space consolidation in 2024 and 2032, respectively. The Company expects to incur an additional approximately $2 million of related charges during 2024, primarily related to the office space consolidation.The following table summarizes the activities related to the restructuring for the three months ended March 31, 2024:

	Employee Headcount Reduction		Office Space Consolidation		Total
Liability as of December 31, 2023	$	16	$	12	$	28
Charges	—		11		11
Payments	(8)		(4)		(12)
Non-cash items	—		(4)		(4)
Liability as of March 31, 2024	$	8	$	15	$	23

As of March 31, 2024, the liability for restructuring charges is included in "Other accrued liabilities" on the consolidated balance sheet, and the corresponding expense is included in "Restructuring charges" on the condensed consolidated statements of operations and comprehensive income.

15

CROWN CASTLE INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS-Unaudited (Continued)

(Tabular dollars in millions, except per share amounts)

The Company does not allocate restructuring charges between its operating segments. If such charges were allocated to operating segments, for the three months ended March 31, 2024, $2 million and $3 million of the aforementioned charge would have been allocated to the Company's Towers and Fiber segment, respectively, with the remaining $6 million allocated to Other.

16

ITEM 2.MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion should be read in conjunction with the response to Part I, Item 1 of this report and the consolidated financial statements of the Company including the related notes and "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" ("MD&A") included in the 2023 Form 10-K.

General Overview

Overview

We own, operate and lease shared communications infrastructure that is geographically dispersed throughout the U.S., including (1) more than 40,000 towers and other structures, such as rooftops (collectively, "towers"), (2) approximately 115,000 small cells on air or under contract and (3) approximately 90,000 route miles of fiber primarily supporting small cells and fiber solutions.

Our towers have a significant presence in each of the top 100 basic trading areas ("BTAs"), and the majority of our small cells and fiber assets are located in major metropolitan areas, including a presence within every major U.S. market. Site rental revenues represented 97% of our first quarter 2024 consolidated net revenues, of which 67% and 33% were from our Towers segment and Fiber segment, respectively. Within our Fiber segment, 67% and 33% of our first quarter 2024 Fiber site rental revenues related to fiber solutions and small cells, respectively. See note 10 to our condensed consolidated financial statements. The vast majority of our site rental revenues are of a recurring nature and are derived from long-term tenant contracts.

Strategy

As a leading provider of shared communications infrastructure in the U.S., our strategy is to create long-term stockholder value via a combination of (1) growing cash flows generated from our existing portfolio of communications infrastructure, (2) returning a meaningful portion of our cash generated by operating activities to our common stockholders in the form of dividends and (3) investing capital efficiently to grow cash flows and long-term dividends per share. Our strategy is based, in part, on our belief that the U.S. is the most attractive market for shared communications infrastructure investment with the greatest long-term growth potential. We measure our efforts to create "long-term stockholder value" by the combined payment of dividends to stockholders and growth in our per-share results. The key elements of our strategy are to:

•Grow cash flows from our existing communications infrastructure. We are focused on maximizing the recurring site rental cash flows generated from providing our tenants with long-term access to our shared infrastructure assets, which we believe is the core driver of value for our stockholders. Tenant additions or modifications of existing tenant equipment (collectively, "tenant additions") enable our tenants to expand coverage and capacity in order to meet increasing demand for data while generating high incremental returns for our business. We believe our product offerings of towers and small cells through our shared communications infrastructure model provide a comprehensive, efficient and cost-effective solution for our wireless tenants' growing networks. Additionally, we believe our ability to share our fiber assets across multiple tenants to both deploy small cells and offer fiber solutions allows us to generate cash flows and increase stockholder return.

•Return cash generated by operating activities to common stockholders in the form of dividends. We believe that distributing a meaningful portion of our cash generated by operating activities appropriately provides common stockholders with increased certainty for a portion of expected long-term stockholder value while still allowing us to retain sufficient flexibility to invest in our business and deliver growth. We believe this decision reflects the translation of the high-quality, long-term contractual cash flows of our business into stable capital returns to common stockholders.

•Invest capital efficiently to grow cash flows and long-term dividends per share. In addition to adding tenants to existing communications infrastructure, we seek to invest our available capital, including the net cash generated by our operating activities and external financing sources, in a manner that will increase long-term stockholder value on a risk-adjusted basis. These investments include constructing and acquiring new communications infrastructure that we expect will generate future cash flow growth and attractive long-term returns by adding tenants to those assets over time. Our historical investments have included the following (in no particular order):

17

◦construction of towers, fiber and small cells;

◦acquisitions of towers, fiber and small cells;

◦acquisitions of land interests (which primarily relate to land assets under towers);

◦improvements and structural enhancements to our existing communications infrastructure;

◦purchases of shares of our common stock from time to time; and

◦purchases, repayments or redemptions of our debt.

Our strategy to create long-term stockholder value is based on our belief that there will be considerable future demand for our communications infrastructure based on the location of our assets and the rapid and continuing growth in the demand for data. We believe that such demand for our communications infrastructure will continue, will result in growth of our cash flows due to tenant additions on our existing communications infrastructure, and will create other growth opportunities for us, such as demand for newly constructed or acquired communications infrastructure, as described above. Further, we seek to augment the long-term value creation associated with growing our recurring site rental cash flows by offering certain ancillary site development services within our Towers segment. See note 12 to our consolidated financial statements for a discussion of the restructuring Plan (as defined below), which included discontinuing installation services as a Towers product offering.

Highlights of Business Fundamentals and Results

•We operate as a REIT for U.S. federal income tax purposes

◦As a REIT, we are generally entitled to a deduction for dividends that we pay and, therefore, are not subject to U.S. federal corporate income tax on our net taxable income that is currently distributed to our stockholders.

◦To remain qualified and be taxed as a REIT, we will generally be required to annually distribute to our stockholders at least 90% of our REIT taxable income, after the utilization of our NOLs (determined without regard to the dividends paid deduction and excluding net capital gain).

◦See note 6 to our condensed consolidated financial statements for further discussion of our REIT status.

•Potential growth resulting from the increasing demand for data

◦We expect existing and potential new tenant demand for our communications infrastructure will result from (1) new technologies, (2) increased usage of mobile entertainment, mobile internet, and machine-to-machine applications, (3) adoption of other emerging and embedded wireless devices (including smartphones, laptops, tablets, wearables and other devices), (4) increasing smartphone penetration, (5) wireless carrier focus on expanding both network quality and capacity, including the use of both towers and small cells, (6) the adoption of other bandwidth-intensive applications (such as cloud services, artificial intelligence and video communications), (7) the availability of additional spectrum and (8) increased government initiatives to support connectivity throughout the U.S.

◦We expect U.S. wireless carriers will continue to focus on improving network quality and expanding capacity (including through 5G initiatives) by utilizing a combination of towers and small cells. We believe our product offerings of towers and small cells provide a comprehensive solution to our wireless tenants' growing communications infrastructure needs.

◦We expect organizations will continue to increase the usage of high-bandwidth applications that will require the utilization of more fiber infrastructure and fiber solutions, such as those we provide.

◦Within our Fiber segment, we are able to generate growth and returns for our stockholders by deploying our fiber for both small cells and fiber solutions tenants.

◦Tenant additions on our existing communications infrastructure are achieved at a low incremental operating cost, delivering high incremental returns.

•Substantially all of our communications infrastructure can accommodate additional tenancy, either as currently constructed or with appropriate modifications.

•Investing capital efficiently to grow long-term dividends per share (see also "Item 2. MD&A—General Overview—Strategy")

◦We had discretionary capital expenditures of $298 million for the three months ended March 31, 2024, predominately resulting from the construction of new communications infrastructure and improvements to existing communications infrastructure in order to support additional tenants.

◦We expect to continue to construct and acquire new communications infrastructure based on our tenants' needs and generate attractive long-term returns by adding additional tenants over time.

•Site rental revenues under long-term tenant contracts

◦Our wireless tenant contracts have initial terms generally between five to 15 years, with contractual escalators and multiple renewal periods generally between five to 10 years each, exercisable at the option of the tenant.

◦Our fiber solutions tenant contracts' initial terms generally vary between one to 20 years.

18

◦As of March 31, 2024, our weighted-average remaining term was approximately six years, exclusive of renewals exercisable at the tenants' option, currently representing approximately $38.1 billion of expected future cash inflows.

•Majority of our revenues from large wireless carriers

◦For the three months ended March 31, 2024, approximately three-fourths of our site rental revenues were derived from T-Mobile, AT&T and Verizon Wireless.

•Majority of land under our towers under long-term control

◦For the three months ended March 31, 2024, approximately 90% of our towers site rental gross margin and approximately 80% of our towers site rental gross margin was derived from towers located on land that we own or control for greater than 10 and 20 years, respectively. The aforementioned percentages include towers located on land that is owned, including through fee interests and perpetual easements, which represented approximately 40% of our towers site rental gross margin.

•Majority of our fiber assets are located in major metropolitan areas and are on public rights-of-way

•Minimal sustaining capital expenditure requirements

◦For the three months ended March 31, 2024, sustaining capital expenditures represented approximately 1% of net revenues.

•Debt portfolio with long-dated maturities extended over multiple years, with the vast majority of such debt having a fixed rate (see note 4 to our condensed consolidated financial statements and "Item 3. Quantitative and Qualitative Disclosures About Market Risk" for a further discussion of our debt)

◦As of March 31, 2024, our outstanding debt had a weighted-average interest rate of 3.9% and weighted-average maturity of approximately seven years (assuming anticipated repayment dates on certain debt).

◦As of March 31, 2024, 90% of our debt had fixed rate coupons.

◦Our debt service coverage and leverage ratios are within their respective financial maintenance covenants.

•During 2024, we have completed the following financing activity (see note 9 to our condensed consolidated financial statements)

◦In March 2024, we terminated the previously outstanding 2021 ATM Program and established the 2024 ATM Program through which we may issue and sell shares of our common stock having an aggregate gross sales price of up to $750 million.

•Significant cash flows from operations

◦Net cash provided by operating activities was $599 million for the three months ended March 31, 2024.

◦In addition to the positive impact of contractual escalators, we expect to grow our core business of providing access to our communications infrastructure as a result of future anticipated additional demand for our communications infrastructure.

•Returning cash flows provided by operations to stockholders in the form of dividends

◦During the first quarter of 2024, we paid a common stock dividend of $1.565 per share, totaling approximately $688 million.

◦We currently expect our common stock dividends over the next 12 months to be a cumulative amount of at least $6.26 per share, or an aggregate amount of approximately $2.7 billion.

◦Over time, we expect to increase our dividend per share as we grow cash flows. Any future common stock dividends are subject to declaration by our board of directors. See note 9 to our condensed consolidated financial statements for further information regarding our common stock and dividends.

•Restructuring Plan

◦In July 2023, we initiated a restructuring plan ("Plan") as part of our efforts to reduce costs to better align our operational needs with lower tower activity. The Plan includes reducing the total employee headcount by approximately 15%, discontinuing installation services as a Towers product offering while continuing to offer site development services on our towers, and consolidating office space. See note 12 to our condensed consolidated financial statements and "Item 2. MD&A—Results of Operations" for further discussion of the Plan.

◦The actions announced in July 2023 associated with the Plan and related charges are expected to be substantially completed and recorded by June 30, 2024 while the payments are expected to be completed for the employee headcount reduction and office space consolidation in 2024 and 2032, respectively.

•In December 2023, we announced a strategic and operating review of our Fiber segment which is currently ongoing.

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Outlook Highlights

The following are certain highlights of our outlook that impact our business fundamentals described above.

•We expect that, when compared to full year 2023, our full year 2024 site rental revenues growth will be positively impacted by tenant additions, as large wireless carriers and fiber solutions tenants continue to focus on meeting the increasing demand for data. We expect a year over year reduction in site rental revenues related to (1) the payments received from T-Mobile in 2023 compared to 2024 which were made in satisfaction of remaining rental obligations for certain canceled Sprint leases ("Sprint Cancellations"), as a result of the T-Mobile US, Inc. and Sprint network consolidation and (2) a decline in long-term deferred revenue amortization.

•We expect to continue to invest a significant amount of our available capital in the form of discretionary capital expenditures for 2024 based on the anticipated returns on such discretionary investments.

◦We expect that our discretionary capital expenditures will increase as we accelerate the pace of small cell deployments.

•We also expect sustaining capital expenditures of approximately 1% of net revenues for full year 2024, consistent with historical annual levels.

•As part of the aforementioned Plan:

◦In 2024, we expect to realize $105 million in labor and facilities cost savings relative to 2023, of which $50 million is expected in selling, general and administrative, $40 million in services and other costs of operations and $15 million in site rental costs of operation. The 2024 costs savings are expect to be partially offset by a $40 million reduction in services and other gross margin due to the discontinuation of installation services.

See also "Item 3. Quantitative and Qualitative Disclosures About Market Risk" for a discussion of our interest rate risks.

Results of Operations

The following discussion of our results of operations should be read in conjunction with our condensed consolidated financial statements and the 2023 Form 10-K.

The following discussion of our results of operations is based on our condensed consolidated financial statements prepared in accordance with GAAP, which requires us to make estimates and judgments that affect the reported amounts (see "Item 2. MD&A—Accounting and Reporting Matters—Critical Accounting Policies and Estimates" and note 2 to our consolidated financial statements in the 2023 Form 10-K). See "Item 2. MD&A—Accounting and Reporting Matters—Non-GAAP and Segment Financial Measures" for a discussion of our use of (1) segment site rental gross margin, (2) segment services and other gross margin, (3) segment operating profit (loss), including their respective definitions, and (4) Adjusted EBITDA, including its definition and a reconciliation to net income (loss).

Our operating segments consist of (1) Towers and (2) Fiber. See note 10 to our condensed consolidated financial statements for further discussion of our operating segments.

Highlights of our results of operations for the three months ended March 31, 2024 and 2023 are depicted below.

(In millions of dollars)	Three Months Ended March 31,
	2024	2023	$ Change	% Change
Site rental revenues:
Towers site rental revenues	$1,068	$1,081	$(13)	(1)%
Fiber site rental revenues	$520	$543	$(23)	(4)%
Total site rental revenues	$1,588	$1,624	$(36)	(2)%
Segment site rental gross margin:(a)
Towers site rental gross margin	$829	$847	$(18)	(2)%
Fiber site rental gross margin	$338	$371	$(33)	(9)%
Segment services and other gross margin:(a)
Towers services and other gross margin	$18	$47	$(29)	(62)%
Fiber services and other gross margin	$3	$1	+$2	+200%
Segment operating profit (loss):(a)
Towers operating profit (loss)	$826	$863	$(37)	(4)%
Fiber operating profit (loss)	$294	$323	$(29)	(9)%
Net income (loss)	$311	$418	$(107)	(26)%
Adjusted EBITDA(b)	$1,036	$1,104	$(68)	(6)%

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(a)See note 10 to our condensed consolidated financial statements and "Item 2. MD&A—Accounting and Reporting Matters—Non-GAAP and Segment Financial Measures" for further discussion of our definitions of segment site rental gross margin, segment services and other gross margin and segment operating profit (loss).

(b)See reconciliation of this non-GAAP financial measure to net income (loss) and definition included in "Item 2. MD&A—Accounting and Reporting Matters—Non-GAAP and Segment Financial Measures."

Site rental revenues decreased $36 million, or 2%, for the three months ended March 31, 2024 compared to the three months ended March 31, 2023. This decrease was predominately comprised of the factors depicted in the chart below:

(In millions of dollars)

(a)Represents site rental revenues growth from tenant additions across our entire portfolio and renewals or extensions of tenant contracts, exclusive of the impacts from straight-line accounting and amortization of prepaid rent, in accordance with GAAP, and change in payments associated with Sprint Cancellations .

(b)Includes $7 million of non-renewals associated with Sprint Cancellations.

(c)Represents $48 million of payments associated with Sprint Cancellations received in the first quarter 2023 and not recurring in 2024, which were partially offset by approximately $3 million of payments associated with Sprint Cancellations received in the first quarter 2024.

(d)Prepaid rent amortization includes amortization of upfront payments received from long-term tenants and other deferred credits.

Towers site rental revenues and Towers site rental gross margin for the first quarter of 2024 were $1.1 billion and $829 million, respectively, compared to $1.1 billion and $847 million, respectively, in the same period in the prior year. The decrease of $13 million and $18 million in Towers site rental revenue and Towers site rental gross margin, respectively, was primarily due to a decrease in prepaid rent amortization and revenue increases under contractual cash escalators being substantially offset by a decline in the associated straight-line accounting adjustment.

Fiber site rental revenues and Fiber site rental gross margin for the first quarter of 2024 were $520 million and $338 million, respectively, and decreased by $23 million and $33 million, respectively, from the same period in the prior year. The decrease in Fiber site rental revenues and Fiber site rental gross margin was predominately impacted by the $44 million reduction in site rental revenues related to the Sprint Cancellation payments, which was partially offset by the increased demand for small cells and fiber.

Towers services and other gross margin was $18 million for the first quarter of 2024 and decreased by $29 million from $47 million during the same period in the prior year, which is a reflection of the lower volume of activity from carriers' network enhancements, the volume and mix of services and other work and the discontinuation of installation services as a Towers product offering. Our services and other offerings are of a variable nature as these revenues are not under long-term tenant contracts. See note 12 to our condensed consolidated financial statements for a discussion of the Plan, which included discontinuing installation services as a Towers product offering.

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Selling, general and administrative expenses for the first quarter of 2024 were $183 million and decreased by $12 million, or 6%, from $195 million during the same period in the prior year. This decrease was primarily related to a decrease in employee-related cost as a result of our aforementioned restructuring activities.

Towers operating profit (loss) for the first quarter of 2024 decreased by $37 million, or 4%, from the same period in the prior year as a result of the previously-mentioned decreases in both Towers site rental gross margin and Towers services and other gross margin.

Fiber operating profit (loss) for the first quarter of 2024 decreased by $29 million, or 9%, from the same period in the prior year as a result of the previously-mentioned reduction in site rental revenues related to the Sprint Cancellation payments.

Depreciation, amortization and accretion was $439 million for first quarter of 2024 and increased by $8 million, or 2%, from the same period in the prior year. This increase predominately resulted from a corresponding increase in our gross property and equipment due to capital expenditures.

Restructuring charges in connection with the Plan were $11 million for the first quarter of 2024. The charges primarily consisted of $7 million of remaining obligations under facility leases. Additionally, non-cash charges of $4 million for accelerated depreciation were also recorded.

Interest expense and amortization of deferred financing costs, net were $226 million for the first quarter of 2024 and increased by $24 million, or 12%, from $202 million during the same period in the prior year. The increase predominately resulted from an increase in the variable interest rate on our 2016 Term Loan A and outstanding Commercial Paper Notes, as well as an increase in our outstanding indebtedness due to the financing of our discretionary capital expenditures. See note 4 to our condensed consolidated financial statements for a further discussion of our debt and "Item 3. Quantitative and Qualitative Disclosures About Market Risk" for a further discussion of our interest rate exposure.

The provision for income taxes was $7 million in both the first quarter of 2024 and 2023. For the first quarter 2024 and 2023, the effective tax rate differs from the federal statutory rate predominately due to our REIT status, including the dividends paid deduction. See note 6 to our condensed consolidated financial statements and also note 9 to our consolidated financial statements in the 2023 Form 10-K.

Net income (loss) was $311 million for the first quarter of 2024 compared to $418 million during the first quarter of 2023. The decrease was primarily related to the previously-mentioned decrease in Towers operating profit, reduction in site rental revenues related to the Sprint Cancellation payments, previously-mentioned increases in interest expense, and amortization of deferred financing costs, net and restructuring charges.

Adjusted EBITDA decreased by $68 million, or 6%, from the first quarter of 2023 to the first quarter of 2024, reflecting the previously-mentioned decrease in Towers operating profit and the reduction in site rental revenues related to the Sprint Cancellation payments.

Liquidity and Capital Resources

Overview

General. Our core business generates revenues under long-term tenant contracts (see "Item 2. MD&A—General Overview—Overview") from (1) the largest U.S. wireless carriers and (2) other towers and fiber solutions tenants. As a leading provider of shared communications infrastructure in the U.S., our strategy is to create long-term stockholder value via a combination of (1) growing cash flows generated from our portfolio of communications infrastructure, (2) returning a meaningful portion of our cash generated by operating activities to our stockholders in the form of dividends, and (3) investing capital efficiently to grow cash flows and long-term dividends per share. Our strategy is based, in part, on our belief that the U.S. is the most attractive market for shared communications infrastructure investment with the greatest long-term growth potential. We measure our efforts to create "long-term stockholder value" by the combined payment of dividends to stockholders and growth in our per share results.

We have engaged, and expect to continue to engage, in discretionary investments that we believe will maximize long-term stockholder value. Our historical discretionary investments include (in no particular order): constructing communications infrastructure, acquiring communications infrastructure, acquiring land interests (which primarily relate to land assets under towers), improving and structurally enhancing our existing communications infrastructure, purchasing shares of our common stock, and purchasing, repaying, or redeeming our debt. We have recently spent, and expect to continue to spend, a significant percentage of our discretionary investments on the construction of small cells and fiber. We seek to fund our discretionary

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investments with both cash generated by operating activities and cash available from financing capacity, such as the use of our availability under our 2016 Revolver, issuances under our CP Program, debt financings and issuances of equity or equity-related securities, including under our 2024 ATM Program.

We seek to maintain a capital structure that we believe drives long-term stockholder value and optimizes our weighted-average cost of capital. We target a leverage ratio of approximately five times Adjusted EBITDA, subject to various factors, such as the availability and cost of capital and the potential long-term return on our discretionary investments. We may choose to increase or decrease our leverage from this target for various periods of time. Our contractual debt maturities over the next 12 months, consist of (1) Commercial Paper Notes, of which we had $920 million outstanding as of April 29, 2024 (2) the 3.200% Senior Notes and (3) principal payments on certain outstanding debt. Amounts available under our CP Program may be repaid and re-issued from time to time and we intend to maintain available commitments under our 2016 Revolver in an amount at least equal to the amount of Commercial Paper Notes outstanding.

We operate as a REIT for U.S. federal income tax purposes. We expect to continue to pay minimal cash income taxes as a result of our REIT status and our NOLs. See note 6 to our condensed consolidated financial statements and also the 2023 Form 10-K.

Liquidity Position. The following is a summary of our capitalization and liquidity position as of March 31, 2024. See "Item 3. Quantitative and Qualitative Disclosures About Market Risk" and note 4 to our condensed consolidated financial statements for additional information regarding our debt as well as note 9 to our condensed consolidated financial statements for additional information regarding our 2024 ATM Program.

(In millions of dollars)
Cash and cash equivalents and restricted cash and cash equivalents(a)	$	298
Undrawn 2016 Revolver availability(b)	6,960
Debt and other long-term obligations (current and non-current)	23,414
Total equity	6,048

(a)Inclusive of $5 million included within "Other assets, net" on our condensed consolidated balance sheet.

(b)Availability at any point in time is subject to certain restrictions based on the maintenance of financial covenants contained in our 2016 Credit Facility. See the 2023 Form 10-K. At any point in time, we intend to maintain available commitments under our 2016 Revolver in an amount at least equal to the amount of outstanding Commercial Paper Notes. See note 4 to our condensed consolidated financial statements.

Over the next 12 months:

•Our liquidity sources may include (1) cash on hand, (2) cash generated by our operating activities, (3) availability under our 2016 Revolver, (4) issuances under our CP Program, and (5) issuances of equity pursuant to our 2024 ATM Program. Our liquidity uses over the next 12 months are expected to include (1) debt obligations of $2.0 billion (consisting of Commercial Paper Notes, the 3.200% Senior Notes and principal payments on certain outstanding debt), (2) cumulative common stock dividend payments expected to be at least $6.26 per share, or an aggregate amount of approximately $2.7 billion (see "Item 2. MD&A—Highlights of Business Fundamentals and Results") and (3) capital expenditures. We may also purchase shares of our common stock. Additionally, amounts available under our CP Program may be repaid and re-issued from time to time and we intend to maintain available commitments under our 2016 Revolver in an amount at least equal to the amount of Commercial Paper Notes outstanding. During the next 12 months, while our liquidity uses are expected to exceed our cash generated by operating activities, we expect that our liquidity sources described above should be sufficient to cover our expected uses. Historically, from time to time, we have accessed the capital markets to issue debt and equity.

•See "Item 3. Quantitative and Qualitative Disclosures About Market Risk" for a discussion of interest rate risk and note 4 to our condensed consolidated financial statements for a tabular presentation of our debt maturities and a discussion of anticipated repayment dates.

Summary Cash Flow Information

	Three Months Ended March 31,
(In millions of dollars)	2024		2023		Change
Operating activities	$	599	$	606	$	(7)
Investing activities	(320)		(407)		87
Financing activities	(261)		(139)		(122)
Net increase (decrease) in cash and cash equivalents and restricted cash and cash equivalents	$	18	$	60	$	(42)

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Operating Activities

Net cash provided by operating activities of $599 million for the first three months of 2024 decreased by $7 million, or 1%, compared to the first three months of 2023, due primarily to the aforementioned decrease in Towers operating profit and the reduction in site rental revenues related to the Sprint Cancellation payments which were mostly offset by a net increase from changes in working capital. Changes in working capital contribute to variability in net cash provided by operating activities, largely due to the timing of advanced payments by us and advanced receipts from tenants. We expect to grow our net cash provided by operating activities in the future (exclusive of changes in working capital) if we realize expected growth in our core business.

Investing Activities

Net cash used for investing activities of $320 million for the first three months of 2024 decreased by $87 million, or 21%, from the first three months of 2023 primarily as a result of a decrease in payments for acquisitions in our Towers segment and a decrease in discretionary capital expenditures in both our Towers and Fiber segments.

Our capital expenditures are categorized as discretionary or sustaining as described below.

•Discretionary capital expenditures are made with respect to activities which we believe exhibit sufficient potential to enhance long-term stockholder value. They primarily consist of expansion or development of communications infrastructure (including capital expenditures related to (1) enhancing communications infrastructure in order to add new tenants for the first time or support subsequent tenant equipment augmentations or (2) modifying the structure of a communications infrastructure asset to accommodate additional tenants) and construction of new communications infrastructure. Discretionary capital expenditures also include purchases of land interests (which primarily relate to land assets under towers as we seek to manage our interests in the land beneath our towers), certain technology-related investments necessary to support and scale future customer demand for our communications infrastructure, and other capital projects. The expansion or development of existing communications infrastructure to accommodate new leasing typically varies based on, among other factors: (1) the type of communications infrastructure, (2) the scope, volume, and mix of work performed on the communications infrastructure, (3) existing capacity prior to installation, or (4) changes in structural engineering regulations and standards. Currently, construction of new communications infrastructure is predominately comprised of the construction of small cells and fiber (including certain construction projects that may take 18 to 36 months to complete). Our decisions regarding discretionary capital expenditures are influenced by the availability and cost of capital and expected returns on alternative uses of cash, such as payments of dividends and investments.

•Sustaining capital expenditures consist of those capital expenditures not otherwise categorized as discretionary capital expenditures, such as (1) maintenance capital expenditures on our communications infrastructure assets that enable our tenants' ongoing quiet enjoyment of the communications infrastructure and (2) ordinary corporate capital expenditures.

A summary of our capital expenditures for the three months ended March 31, 2024 and 2023 is as follows:

	For the Three Months Ended
	March 31, 2024								March 31, 2023
(In millions of dollars)	Towers		Fiber		Other		Total		Towers		Fiber		Other		Total
Discretionary:
Communications infrastructure improvements and other capital projects(a)	$	20	$	259	$	6	$	285	$	33	$	272	$	6	$	311
Purchases of land interests	13		—		—		13		15		—		—		15
Sustaining	2		14		6		22		2		7		6		15
Total	$	35	$	273	$	12	$	320	$	50	$	279	$	12	$	341

(a)Towers segment includes $4 million and $10 million of capital expenditures incurred during the three months ended March 31, 2024 and 2023, respectively, in connection with tenant installations and upgrades on our towers.

Discretionary capital expenditures were primarily impacted by the timing of both Towers and Fiber tenant activity during the first three months of 2024 compared to the same period in 2023. See also "Item 2. MD&A—General Overview—Outlook Highlights" for our expectations surrounding 2024 capital expenditures.

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Financing Activities

We seek to allocate cash generated by our operations in a manner that will enhance long-term stockholder value, which may include various financing activities such as (in no particular order): (1) paying dividends on our common stock (currently expected to total at least $6.26 per share over the next 12 months, or an aggregate amount of approximately $2.7 billion, (2) purchasing our common stock or (3) purchasing, repaying, or redeeming our debt. See notes 4 and 9 to our condensed consolidated financial statements.

Net cash used for financing activities of $261 million for the first three months of 2024 increased by $122 million from the first three months of 2023 as a result of the net impact from our issuances and repayments of debt (including with respect to our 2016 Credit Facility and CP Program). See "Item 2. MD&A—General Overview—Highlights of Business Fundamentals and Results" and notes 4 and 9 to our condensed consolidated financial statements for further information.

Credit Facility. The proceeds from our 2016 Revolver may be used for general corporate purposes, which may include the financing of capital expenditures, acquisitions, the repayment or repurchase of any outstanding indebtedness and purchases of our common stock. As of April 29, 2024, there was no outstanding balance and $7.0 billion in undrawn availability under our 2016 Revolver. At any point in time, we intend to maintain available commitments under our 2016 Revolver in an amount at least equal to the amount of outstanding Commercial Paper Notes. See note 4 to our condensed consolidated financial statements for additional information regarding our Credit Facility.

Commercial Paper Program. The proceeds from our Commercial Paper Notes may be used for general corporate purposes, which may include the financing of capital expenditures, acquisitions, the repayment or repurchase of any outstanding indebtedness and purchases of our common stock. As of April 29, 2024, there was $920 million outstanding under our CP Program. See note 4 to our condensed consolidated financial statements for further information regarding our CP Program.

Incurrence, Purchases, and Repayments of Debt. See "Item 7. MD&A—General Overview", "MD&A—Liquidity and Capital Resources—Overview—Liquidity Position" and note 7 of our consolidated financial statements in the 2023 Form 10-K for further discussion of our recent issuances, purchases, redemptions and repayments of debt.

Common Stock Activity. See note 9 to our condensed consolidated financial statements for further information regarding our common stock and dividends.

ATM Program. We previously maintained a 2021 ATM Program through which we had the right to issue and sell shares of our common stock having an aggregate gross sales price of up to $750 million to or through sales agents. In March 2024, we terminated the formerly outstanding 2021 ATM Program.

In March 2024, we established the 2024 ATM Program through which we may issue and sell shares of our common stock having an aggregate gross sales price of up to $750 million. Sales under the 2024 ATM Program may be made by means of ordinary brokers' transactions on the NYSE or otherwise at market prices prevailing at the time of sale, at prices related to prevailing market prices or, subject to our specific instructions, at negotiated prices. We intend to use the net proceeds from any sales under the 2024 ATM Program for general corporate purposes, which may include (1) the funding of future acquisitions or investments or (2) the repayment or repurchase of any outstanding indebtedness. We have not sold any shares of common stock under the 2024 ATM Program.

Debt Covenants. Our 2016 Credit Agreement contains financial maintenance covenants. We are currently in compliance with these financial maintenance covenants and, based upon our current expectations, we believe we will continue to comply with our financial maintenance covenants. In addition, certain of our debt agreements contain restrictive covenants that place restrictions on us and may limit our ability to, among other things, incur additional debt and liens, purchase our securities, make capital expenditures, dispose of assets, undertake transactions with affiliates, make other investments, pay dividends or distribute excess cash flow. See the 2023 Form 10-K for a further discussion of our debt covenants, certain restrictive covenants and factors that are likely to determine our subsidiaries' ability to comply with current and future debt covenants.

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Accounting and Reporting Matters

Critical Accounting Policies and Estimates

Our critical accounting policies and estimates are those that we believe (1) are most important to the portrayal of our financial condition and results of operations or (2) require our most difficult, subjective or complex judgments, often as a result of the need to make estimates about the effect of matters that are inherently uncertain. In many cases, the accounting treatment of a particular transaction is specifically prescribed by GAAP. In other cases, management is required to exercise judgment in the application of accounting principles with respect to particular transactions. Accordingly, actual results could differ materially from our estimates. Our critical accounting policies and estimates as of December 31, 2023 are described in "Item 7. MD&A—Accounting and Reporting Matters" and in note 2 of our consolidated financial statements in the 2023 Form 10-K.

Accounting Pronouncements

Recently Adopted Accounting Pronouncements. See note 2 to our condensed consolidated financial statements.

Recent Accounting Pronouncements Not Yet Adopted. See note 2 to our condensed consolidated financial statements.

Non-GAAP and Segment Financial Measures

We use earnings before interest, taxes, depreciation, amortization and accretion, as adjusted ("Adjusted EBITDA"), which is a non-GAAP financial measure, as an indicator of consolidated financial performance. Our measure of Adjusted EBITDA may not be comparable to similarly titled measures of other companies, including companies in the communications infrastructure sector or other REITs, and is not a measure of performance calculated in accordance with GAAP. Adjusted EBITDA should not be considered in isolation or as a substitute for operating income (loss), net income (loss), net cash provided by (used for) operating, investing and financing activities or other income statement or cash flow statement data prepared in accordance with GAAP and should be considered only as a supplement to net income (loss) computed in accordance with GAAP as a measure of our performance. There are material limitations to using a measure such as Adjusted EBITDA, including the difficulty associated with comparing results among more than one company, including our competitors, and the inability to analyze certain significant items, including depreciation and interest expense, that directly affect our net income (loss). Management compensates for these limitations by considering the economic effect of the excluded expense items independently as well as in connection with their analysis of net income (loss).

We define Adjusted EBITDA as net income (loss) plus restructuring charges (credits), asset write-down charges, acquisition and integration costs, depreciation, amortization and accretion, amortization of prepaid lease purchase price adjustments, interest expense and amortization of deferred financing costs, net, (gains) losses on retirement of long-term obligations, net (gain) loss on interest rate swaps, (gains) losses on foreign currency swaps, impairment of available-for-sale securities, interest income, other (income) expense, (benefit) provision for income taxes, net (income) loss from discontinued operations, (gain) loss on sale of discontinued operations, cumulative effect of a change in accounting principle, stock-based compensation expense, net and net (gain) loss from disposal of discontinued operations, net of tax. The reconciliation of Adjusted EBITDA to our net income (loss) is set forth below:

(In millions of dollars; components may not sum to totals due to rounding)	Three Months Ended March 31,
	2024		2023
Net income (loss)	$	311	$	418
Adjustments to increase (decrease) net income (loss):
Asset write-down charges	6		—
Depreciation, amortization and accretion	439		431
Restructuring charges	11		—
Amortization of prepaid lease purchase price adjustments	4		4
Interest expense and amortization of deferred financing costs, net	226		202
Interest income	(4)		(2)
Other (income) expense	(2)		3
(Benefit) provision for income taxes	7		7
Stock-based compensation expense, net	38		41
Adjusted EBITDA(a)	$	1,036	$	1,104

(a)The above reconciliation excludes the items included in our Adjusted EBITDA definition which are not applicable to the periods shown.

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We believe Adjusted EBITDA is useful to investors or other interested parties in evaluating our financial performance because:

•it is the primary measure used by our management (1) to evaluate the economic productivity of our operations and (2) for purposes of making decisions about allocating resources to, and assessing the performance of, our operations;

•although specific definitions may vary, it is widely used by investors or other interested parties in evaluation of the communications infrastructure sector and other REITs to measure financial performance without regard to items such as depreciation, amortization and accretion, which can vary depending upon accounting methods and the book value of assets;

•we believe it helps investors and other interested parties meaningfully evaluate and compare the results of our operations (1) from period to period and (2) to our competitors by removing the impact of our capital structure (primarily interest charges from our outstanding debt) and asset base (primarily depreciation, amortization and accretion) from our financial results; and

•it is similar to the measure of current financial performance generally used in our debt covenant calculations.

Our management uses Adjusted EBITDA:

•as a performance goal in employee annual incentive compensation;

•as a measurement of financial performance because it assists us in comparing our financial performance on a consistent basis as it removes the impact of our capital structure (primarily interest charges from our outstanding debt) and asset base (primarily depreciation, amortization and accretion) from our operating results;

•in presentations to our board of directors to enable it to have the same measurement of financial performance used by management;

•for planning purposes, including preparation of our annual operating budget;

•as a valuation measure in strategic analyses in connection with the purchase and sale of assets;

•in determining self-imposed limits on our debt levels, including the evaluation of our leverage ratio; and

•with respect to compliance with our debt covenants, which require us to maintain certain financial ratios that incorporate concepts such as, or similar to, Adjusted EBITDA.

In addition to the non-GAAP measures used herein and as discussed in note 10 to our condensed consolidated financial statements, we also provide (1) segment site rental gross margin, (2) segment services and other gross margin, and (3) segment operating profit (loss), which are key measures used by management to evaluate the performance of our operating segments. These segment measures are provided pursuant to GAAP requirements related to segment reporting.

We define segment site rental gross margin as segment site rental revenues less segment site rental costs of operations, excluding stock-based compensation expense, net and amortization of prepaid lease purchase price adjustments recorded in consolidated site rental costs of operations. We define segment services and other gross margin as segment services and other revenues less segment services and other costs of operations, excluding stock-based compensation expense, net recorded in consolidated services and other costs of operations. We define segment operating profit (loss) as segment site rental gross margin plus segment services and other gross margin, and segment other operating (income) expense, less segment selling, general and administrative expenses. All of these measurements of profit or loss are exclusive of depreciation, amortization and accretion, which are shown separately. Additionally, certain costs are shared across segments and are reflected in our segment measures through allocations that management believes to be reasonable.

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ITEM 3.QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

The following section updates "Item 7A. Quantitative and Qualitative Disclosures About Market Risk" in the 2023 Form 10-K and should be read in conjunction with that report as well as our condensed consolidated financial statements.

Interest Rate Risk

Our interest rate risk as of March 31, 2024 relates primarily to the impact of interest rate movements on the following:

•our $2.3 billion of floating rate debt as of March 31, 2024, which represented approximately 10% of our total debt as of March 31, 2024; and

•potential future borrowings of incremental debt, including borrowings under our 2016 Credit Facility and issuances under our CP Program.

Since March 2022, the Federal Reserve has repeatedly raised the federal funds rate for a cumulative increase of 5.25%, which adversely impacted the interest rates on our variable rate debt and refinancings of fixed rate debt. Any prolonged period of elevated interest rates or further increases to interest rates could increase our costs of borrowing. See also "Item 1A. Risk Factors" in the 2023 Form 10-K for a discussion of risks stemming from interest rate increases.

We currently have no interest rate swaps.

Sensitivity Analysis.

We manage our exposure to market interest rates on our existing debt by controlling the mix of fixed and floating rate debt. As of March 31, 2024, we had $2.3 billion of floating rate debt. As a result, a hypothetical unfavorable fluctuation in market interest rates on our existing debt of 1/4 of a percent point over a 12-month period would increase our interest expense by approximately $6 million.

Future Principal Payments and Interest Rates.

The following table provides information about our market risk related to changes in interest rates. The future principal payments and weighted-average interest rates are presented as of March 31, 2024. These debt maturities reflect final maturity dates and do not consider the impact of the principal payments that commence following the anticipated repayment dates of certain debt (see footnotes (b) and (d)). The information presented below regarding the variable rate debt is supplementary to our sensitivity analysis regarding the impact of changes in the interest rates. See notes 4 and 5 to our condensed consolidated financial statements and the 2023 Form 10-K for additional information regarding our debt.

	Future Principal Payments and Interest Rates by the Debt Instruments' Contractual Year of Maturity
(In millions of dollars)	2024				2025			2026			2027			2028			Thereafter			Total			Fair Value(a)
Debt:
Fixed rate(b)	$	785			$	543		$	2,689		$	2,285		$	2,630		$	12,343		$	21,275		$	19,280
Average interest rate(b)(c)(d)	3.3		%		1.6		%	3.0		%	3.5		%	4.5		%	4.3		%	4.0		%
Variable rate(e)	$	1,184		(f)	$	60		$	90		$	966		$	—		$	—		$	2,300		$	2,300
Average interest rate(e)	5.9		%		5.4		%	4.9		%	4.8		%	—		%	—		%	5.5		%

(a)The fair value of our debt is based on indicative quotes, non-binding quotes from brokers that require judgment to interpret market information, including implied credit spreads for similar borrowings on recent trades or bid/ask offers. These fair values are not necessarily indicative of the amount, which could be realized in a current market exchange.

(b)The impact of principal payments that will commence following the anticipated repayment dates is not considered (see footnote (d) below). The Tower Revenue Notes, Series 2015-2 and Series 2018-2 have principal amounts of $700 million and $750 million, with anticipated repayment dates in 2025 and 2028, respectively.

(c)The average interest rate represents the weighted-average stated coupon rate (see footnote (d) below).

(d)If the Tower Revenue Notes are not repaid in full by the applicable anticipated repayment dates, the applicable interest rate increases by approximately 5% per annum and monthly principal payments commence using the Excess Cash Flow (as defined in the indenture governing the applicable Tower Revenue Notes) of the issuers of the Tower Revenue Notes. The Tower Revenue Notes are presented based on their contractual maturity dates ranging from 2045 to 2048 and include the impact of an assumed 5% increase in interest rate that would occur following the anticipated repayment dates but exclude the impact of monthly principal payments that would commence using Excess Cash Flow of the issuers of the Tower Revenue Notes. The full year 2023 Excess Cash Flow of the issuers of the Tower Revenue Notes was approximately $993 million. We currently expect to refinance these notes on or prior to the respective anticipated repayment dates.

(e)See note 7 to our consolidated financial statements in the 2023 Form 10-K for information regarding potential upward or downward adjustments to the interest rate spread and unused commitment fee percentage on our 2016 Credit Facility if we achieve specified annual sustainability targets or fail to meet

28

annual sustainability metrics. Each period presented assumes the downward adjustments in the interest rate spread and unused commitment fee percentage on our 2016 Credit Facility.

(f)Predominately consists of outstanding indebtedness under our CP Program. Such amounts may be issued, repaid or re-issued from time to time.

ITEM 4.CONTROLS AND PROCEDURES

Disclosure Controls and Procedures

The Company conducted an evaluation, under the supervision and with the participation of the Company's management, including the Company's Chief Executive Officer ("CEO") and Chief Financial Officer ("CFO"), of the effectiveness of the Company's disclosure controls and procedures as of the end of the period covered by this report. Based upon their evaluation, the CEO and CFO concluded that as of March 31, 2024, the Company's disclosure controls and procedures were effective in alerting them in a timely manner to material information relating to the Company required to be included in the Company's periodic reports under the Securities Exchange Act of 1934, as amended.

Changes in Internal Control Over Financial Reporting

There have been no changes in the Company's internal control over financial reporting during the fiscal quarter covered by this Form 10-Q that have materially affected, or are reasonably likely to materially affect, the Company's internal control over financial reporting.

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PART II—OTHER INFORMATION

ITEM 1.    LEGAL PROCEEDINGS

See the disclosure in note 8 to our condensed consolidated financial statements.

ITEM 1A.RISK FACTORS

There are no material changes to the risk factors discussed in "Item 1A. Risk Factors" in the 2023 Form 10-K.

ITEM 5.OTHER INFORMATION

None.

ITEM 6.EXHIBITS

Exhibit Index

		Incorporated by Reference
Exhibit Number	Exhibit Description	Form	File Number	Date of Filing	Exhibit Number
1.1	Form of Sales Agreement, dated March 20, 2024, between the Company and each of BofA Securities, Inc., Barclays Capital Inc., BNP Paribas Securities Corp., BTIG, LLC, Citigroup Global Markets Inc., Credit Agricole Securities (USA) Inc., Jefferies LLC, J.P. Morgan Securities LLC, Mizuho Securities USA LLC, Morgan Stanley & Co. LLC, MUFG Securities Americas Inc., RBC Capital Markets, LLC, Scotia Capital (USA) Inc., SG Americas Securities, LLC, TD Securities (USA) LLC and Truist Securities, Inc.	8-K	001-16441	March 20, 2024	1.1
3.1	Restated Certificate of Incorporation of Crown Castle Inc., dated July 25, 2023	10-Q	001-16441	August 2, 2023	3.1
3.2	Amended and Restated By-Laws of Crown Castle Inc., dated December 19, 2023	8-K	001-16441	December 20, 2023	3.1
10.1	Letter Agreement between Crown Castle Inc. and Jay A. Brown, dated January 16, 2024	10-K	001-16441	February 23, 2024	10.2
10.2	Letter Agreement between Crown Castle Inc. and Daniel K. Schlanger, dated January 23, 2024	10-K	001-16441	February 23, 2024	10.8
10.3	Amendment to Cooperation Agreement, between Crown Castle Inc., Elliott Investment Management L.P., Elliott Associates, L.P., and Elliott International, L.P., dated March 3, 2024	8-K	001-16441	March 4, 2024	10.1
10.4*	Form of Restricted Stock Unit Agreement for 2022 Long-Term Incentive Plan (effective January 1, 2024)	—	—	—	—
31.1*	Certification of Chief Executive Officer pursuant to Section 302 of Sarbanes-Oxley Act of 2002	—	—	—	—
31.2*	Certification of Chief Financial Officer pursuant to Section 302 of Sarbanes-Oxley Act of 2002	—	—	—	—
32.1†	Certification of Chief Executive Officer and Chief Financial Officer pursuant to Section 906 of Sarbanes-Oxley Act of 2002	—	—	—	—
101*	The following financial statements from Crown Castle Inc. Quarterly Report on Form 10-Q for the quarter ended March 31, 2024, formatted in Inline XBRL: (i) Condensed Consolidated Balance Sheet, (ii) Condensed Consolidated Statement of Operations and Comprehensive Income (Loss), (iii) Condensed Consolidated Statement of Cash Flows, (iv) Condensed Consolidated Statement of Equity, and (v) Notes to Condensed Consolidated Financial Statements, tagged as blocks of text and including detailed tags	—	—	—	—
104*	The cover page from Crown Castle Inc. Quarterly Report on Form 10-Q for the quarter ended March 31, 2024, formatted in Inline XBRL	—	—	—	—

* Filed herewith.

† Furnished herewith.

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SIGNATURES

Pursuant to the requirements 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.

		CROWN CASTLE INC.
Date:	May 1, 2024	By:	/s/ DANIEL K. SCHLANGER
			Daniel K. Schlanger
			Executive Vice President and Chief Financial Officer
			(Principal Financial Officer)
Date:	May 1, 2024	By:	/s/  ROBERT S. COLLINS
			Robert S. Collins
			Vice President and Controller
			(Principal Accounting Officer)

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EX-10.4

Exhibit 10.4

GRANT DATE: ______________, _____

RESTRICTED STOCK UNIT AGREEMENT

(2022 Long-Term Incentive Plan)

This Restricted Stock Unit Agreement (“Agreement”) is made effective as of ___________, ____ (“Grant Date”), between CROWN CASTLE INC. (“Company”), a Delaware corporation, and _____________________(“Holder”).

Holder has been serving as an employee or consultant of the Company or one of its Affiliates. In recognition of service and in order to encourage Holder to remain with the Company or its Affiliates (“Group”) and devote Holder’s best efforts to the Group’s affairs, thereby advancing the interests of the Company and its stockholders, the Company and Holder agree as follows:

1.Issuance of Restricted Stock Units. Upon the execution and return of this Agreement and for consideration from Holder to the Company in the form of services to the Group, the fair market value of which is at least equal to $.01 per each restricted stock unit granted pursuant to the 2022 Plan (defined below) (“Unit”) which may be issued hereunder, the Company shall grant to Holder the number of Units listed on the exhibit(s) (each, an “Exhibit”) attached to this Agreement(“Holder’s Units”), with each such Unit representing the right to potentially receive one share of $.01 par value Common Stock of the Company (“Stock”), subject to all of the terms set forth in this Agreement and in the Crown Castle Inc. 2022 Long-Term Incentive Plan, as may be amended from time to time (“2022 Plan”), which is incorporated herein by reference as a part of this Agreement. The terms “Affiliate,” “Award”, “Committee”, “Code”, “Dividend Equivalent” and “Performance Award” shall have the meanings assigned to them in the 2022 Plan. If a Performance Measure (as hereinafter defined) is designated on an attached Exhibit, then the Units subject to that Exhibit are hereby designated as Performance Awards for purposes of Article IX of the 2022 Plan.

2.Limitations on Rights Associated with Units and Dividend Equivalents. The Units and Dividend Equivalents granted pursuant to this Agreement are bookkeeping entries only. The Holder as to the Units shall have no rights as a stockholder of the Company, including no dividend rights (other than those described in Section 7 hereof with regard to Dividend Equivalents) and no voting rights.

3.Transfer and Forfeiture Restrictions. The Holder’s Units shall not be sold, assigned, pledged, or otherwise transferred except as provided herein (including the 2022 Plan), and Holder shall be obligated to forfeit and surrender, without further consideration from the Company, such Units (to the extent then subject to the Forfeiture Restrictions) to the Company in accordance with this Agreement. The obligation to forfeit and surrender Units to the Company is

referred to herein as the “Forfeiture Restrictions.” The transfer restrictions and Forfeiture Restrictions shall be binding upon and enforceable against any permitted transferee of Units.

4.Measures.

(a)Except as otherwise provided in Section 5 hereof, the lapsing of the Forfeiture Restrictions shall be contingent on the Holder and the Group, as applicable, meeting the service and, if applicable, performance conditions described on the applicable Exhibit attached to this Agreement. The Holder shall be required to complete a designated period of service (“Time Measure”) which shall begin on the Grant Date and end on the date specified in the applicable Exhibit attached (“Time Vesting Date”). In addition, to the extent provided in an attached Exhibit, the Holder or the Group may be required to attain one or more performance goals (each, if applicable, a “Performance Measure”, and together with a Time Measure, the “Measures”), which shall be measured over the designated period of time (“Performance Period”), as described on such Exhibit. The date on which the Time Measure and, if applicable, the Performance Measure, are both satisfied shall be the “Measurement Date” for Holder’s Units, subject to such measurement. The Time Measure, Time Vesting Date, Measurement Date and, if applicable, the Performance Period and Performance Measures for this grant of Units are described on the applicable Exhibit attached to this Agreement.

(b)In addition to the conditions set forth in Section 4(a), the lapsing of any Forfeiture Restrictions shall be contingent upon the Holder having complied (as determined by the Company) with all agreements (including any confidentiality, non-competition, non-solicitation and non-disparagement agreements) entered into by and between the Holder and any member of the Group on and prior to the date such Forfeiture Restrictions would otherwise be expected to lapse hereunder.

(c)As soon as administratively feasible after the designated Measurement Date for a Unit, (1) if that Unit is subject to a Performance Measure, the Committee shall certify in writing the extent to which such Performance Measure has been satisfied, (2) the Company shall calculate the number of Units with respect to which the Forfeiture Restrictions shall lapse pursuant to the terms of the applicable Exhibit attached (“Vested Units”), and (3) the Company shall distribute to the Holder one share of Stock (“Distributed Stock”) in exchange for each Vested Unit in accordance with the timing restrictions of Section 9 hereof, and upon such exchange the Vested Units shall be automatically cancelled.

(d)Any Holder’s Units with respect to which Forfeiture Restrictions cannot lapse pursuant to this Section 4 (including any exceptions pursuant to Section 5 hereof) shall be forfeited and surrendered to the Company by Holder.

5.Termination of Employment or Service. If Holder’s employment with the Group terminates or is terminated prior to the applicable Measurement Date, then the remaining Holder’s Units shall be forfeited and surrendered to the Company; provided, however, that, in such event, the Committee may (subject to the terms of the 2022 Plan), in its sole discretion, cause the Forfeiture Restrictions to lapse as to all or a part of the Holder’s Units and, subject to the timing restrictions of Section 9 hereof, cause Distributed Stock to be issued and distributed

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with respect to such Units as if they were Vested Units subject to such terms set by the Committee, which may include satisfaction of the Measures that would otherwise be applicable to such Units if Holder’s employment with the Group had continued. For purposes of this Section 5, Holder’s services as a consultant or member of the board of directors (or a similar position) of the Group shall be considered employment with the Group (notwithstanding the foregoing, a Holder who is a consultant of the Group shall be and remain an independent contractor of the Group for all purposes, and this Agreement shall not be construed to create an employment relationship). In the event Holder’s employment with the Group terminates or is terminated under circumstances constituting retirement under any then-existing Board-approved retirement policy or program, including the Company’s Extended Service Separation Program (if then in effect), the lapse of the Forfeiture Restrictions with respect to or the forfeiture of Holder’s Units, as applicable, shall be determined in accordance with such retirement policy or program.

6.Disclosure of Units. If Holder discloses or discusses in any manner this Agreement prior to the applicable Measurement Date to or with any other person (including any other employee or consultant of the Group), then the Holder’s Units may be forfeited and the Holder’s Units may be surrendered to the Company; provided, the above restriction is not applicable to the extent of reasonable disclosure (a) to an advisor to the Holder (e.g., accountant, financial planner) that has a legitimate reason to have such information and that is subject to an obligation to maintain the confidentiality of such information, (b) required by applicable law including any applicable securities law, (c) to an employee of the Group specifically involved with the administration of this Agreement, or (d) to Holder’s spouse. Holder acknowledges and agrees that nothing in this Agreement is intended to, nor does it, interfere with or restrain Holder’s right to share or discuss information regarding his/her wages, hours, or other terms and conditions of employment in the exercise of any rights provided by either (x) the National Labor Relations Act, or (y) any applicable state statute or regulation.

7.Dividend Equivalents. While the Holder’s Units are outstanding and still subject to a Forfeiture Restriction, the Company will accrue Dividend Equivalents on behalf of the Holder. The Dividend Equivalents paid with respect to each Holder’s Unit will be equal to the sum of the cash dividends declared and paid by the Company with respect to each share of Distributed Stock while the Holder’s Units are outstanding. No interest will accrue on the Dividend Equivalents. The Dividend Equivalents with respect to a Holder’s Unit shall be earned and distributed in cash generally at or shortly after the time such Holder’s Unit converts to a share of Distributed Stock and in accordance with Section 9 hereof. Any and all Dividend Equivalents with respect to the Holder’s Units that are forfeited shall also be forfeited and not deemed earned by nor distributed to Holder. Following lapsing of the Forfeiture Restrictions with respect to Holder’s Units and pending distribution of Distributed Stock in respect thereto, Holder shall be entitled to receive Dividend Equivalents relating to such Holder’s Units to the extent, if any, that the Holder is not entitled to receive with respect to the Distributed Stock dividends which would otherwise be paid to Holder during such interim period if the Distributed Stock had been so distributed, but in no event shall Holder be entitled to receive both a Dividend Equivalent and a dividend for such interim period.

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8.Community Interest of Spouse. The community interest, if any, of any spouse of Holder in any of the Holder’s Units, Dividend Equivalents, and Distributed Stock shall be subject to all of the terms of this Agreement, and shall be forfeited and surrendered to the Company upon the occurrence of any of the events requiring Holder’s interest in such Holder’s Units or Dividend Equivalents to be so forfeited and surrendered pursuant to this Agreement.

9.Internal Revenue Code §409A Compliance. This Agreement is intended to satisfy the requirements of Section 409A of the Internal Revenue Code of 1986, as amended, and the rules and regulations thereunder, and shall be interpreted consistent with such intent. Any Distributed Stock or Dividend Equivalents that become deliverable or payable to the Holder hereunder shall be delivered to the Holder no later than the end of the calendar year in which the designated Measurement Date occurs. Notwithstanding the foregoing, in the event of a deemed lapse of any Forfeiture Restriction under the provisions of Section 5, delivery of Distributed Stock and Dividend Equivalents shall be made no earlier than the designated Measurement Date otherwise applicable hereunder, and not later than the last day of the calendar year containing the designated Measurement Date. In the event that all or part of the Units granted pursuant to this Agreement provide for a deferral of compensation within the meaning of Section 409A, then notwithstanding anything to the contrary contained herein, in the event that Holder is a “specified employee” (as defined under Section 409A) when Holder becomes entitled to a payment or settlement under this Award which is subject to Section 409A on account of a “separation from service” (as defined under Section 409A), to the extent required by the Code, such payment shall not occur until the date that is six months plus one day from the date of such separation from service. Any amount that is otherwise payable within the six-month period described herein will be aggregated and paid in a lump sum without interest. Further, for purposes of Section 409A, each payment or settlement of any portion of the Units under this Agreement shall be treated as a separate payment of compensation.

10.Withholding of Tax.

(a)To the extent that any event pursuant to this Agreement, other than any event contemplated in Section 10(b) below, relating to the Holder’s Units or Distributed Stock results in the incurrence of compensation or other taxable income by the Holder (including the Holder’s Spouse) that is subject to tax withholding by the Company, the Holder must satisfy such tax withholding obligation by electing, prior to the delivery of Distributed Stock, to either (1) deliver to the Company an amount of cash equal to the tax withholding amount required under applicable tax laws or regulations, or (2) allow the Company to deduct from the number of shares of Distributed Stock that would have otherwise been delivered to the Holder a number of such shares having a fair market value equal to such tax withholding amount required under applicable tax laws or regulations.

(b)To the extent that any event pursuant to this Agreement relating to the Dividend Equivalents deemed to be earned results in the incurrence of compensation or other taxable income by the Holder (including the Holder’s Spouse) that is subject to withholding by the Company, the Holder must satisfy such tax withholding obligation with such amount of cash as the Company may require to meet its obligation under applicable tax laws or regulations.

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(c)Regardless of any action of the Company, the Holder acknowledges that the Holder is ultimately liable for such tax withholding obligation. The Company shall not be required to deliver Distributed Stock or cash in respect of Dividend Equivalents under this Agreement until such liability is satisfied.

(d)To the extent that Holder is treated by Company as a consultant for tax purposes, Holder shall (1) pay all taxes arising from any event relating to the Holder’s Units or Distributed Stock that results in the incurrence of compensation or other taxable income by the Holder and (2) indemnify the Group and hold the Group harmless from any liability resulting from or relating to any and all taxes, liens, duties, assessments, deductions and expenses (including any penalty, interest or other charge that may be levied with respect thereto) as a result of Holder’s late payment, insufficient payment or failure to pay any taxes.

11.Binding Effect. This Agreement shall be binding upon and inure to the benefit of any successors to the Company and all persons lawfully claiming under Holder.

12.Contract Terms. Notwithstanding the terms of this Agreement, if the Holder has entered into a separate written agreement with the Company which specifically affects the Units issued hereunder, the terms of such separate agreement shall control over any inconsistent terms of this Agreement.

13.Modification. Any modification of this Agreement will be effective only if it is in writing and signed by each party whose rights hereunder are affected thereby, except to the extent that such modification occurs pursuant to Section XIII of the 2022 Plan or as a result of an amendment of the 2022 Plan made in accordance with Section XIV of the 2022 Plan.

14.Governing Law. This Agreement shall be governed by, and construed in accordance with, the laws of the State of Texas, without regard to conflicts of laws principles thereof.

15.Interpretation. Unless otherwise specified or the context otherwise requires, as used herein, (a) the term “including”, and any variation thereof, means “including, without limitation,” (b) the word “or” shall not be exclusive, and (c) a reference to the “terms” of an agreement, instrument or document or “terms” established by the Committee shall be a reference to “terms, provisions, conditions and restrictions.”

IN WITNESS WHEREOF, the Company has executed this Agreement by its duly authorized officer and Holder has executed this Agreement, effective as of the Grant Date.

CROWN CASTLE INC.

By:

Name:

Title:

Date:

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Exhibit A

GRANT ID: ___________________

GRANT DATE: ____________, ______

Measures Applicable To

Restricted Stock Unit Agreement

(2022 Long-Term Incentive Plan)

Time Vesting Award

Name:            ____________________

Number of Units:    ____________________

The terms of this Exhibit A shall apply to the number of Units listed above. The terms of any other Exhibit to Holder’s Restricted Stock Unit Agreement shall only apply to the Units listed on such Exhibit.

    1.    General. The Holder’s Units subject to this Exhibit A shall become vested based on the completion of the Time Measure as outlined below.

    2.    Time Measure. The Time Measure shall be satisfied with respect to a Unit if the Holder is an employee, consultant or a member of the board of directors (or a similar position) of the Group for the period beginning on the Grant Date and ending on the applicable Time Vesting Date listed below.

Time Vesting DateIncremental PercentageAggregate Percentage

____________, ____            __.__%                           __.__%

____________, ____            __.__%                            __.__%

____________, ____            __.__%                            100.00%

If the Time Measure is satisfied, the designated percentage of the Holder’s Units listed above shall no longer be subject to the Forfeiture Restrictions on the designated Time Vesting Date.

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Exhibit B

GRANT ID: ______________

GRANT DATE: ____________, ______

Measures Applicable To

Restricted Stock Unit Agreement

(2022 Long-Term Incentive Plan)

Performance Award - ROIC Award

Name:                            ____________________

Target Number of Units (“Target Level”):    ____________________

The terms of this Exhibit B shall apply to the Units listed above. The terms of any other Exhibit to Holder’s Restricted Stock Unit Agreement shall only apply to the Units listed on such Exhibit.

    1.    General. The Holder’s Units shall become vested based on the satisfaction of both the Time Measure and the Performance Measure, each as outlined below. The Units subject to this Exhibit are hereby designated as Performance Awards for purposes of Article IX of the 2022 Plan. The initial number of Units specified above in this Exhibit as the “Target Level” is the “target” number of shares of Stock that may be delivered upon settlement of the Units subject to this Exhibit. Such initial number of Units shall be adjusted based on the attainment of the Performance Measure described in Section 3 below.

    2.    Time Measure. The Time Measure shall be satisfied with respect to a Unit if the Holder is an employee, consultant or a member of the board of directors (or a similar position) of the Group for the period beginning on the Grant Date and ending on __________, ____, which shall be the “Time Vesting Date” for each Unit subject to this Exhibit B.

    3.    Performance Measure.

(a)The initial number of Units subject to this Exhibit B is listed above, which number of Units assumes the Performance Measure described in this Section 3 is attained at the Target Level. The final number of Units, if any, subject to this Exhibit B at the end of the Performance Period (defined below) shall be calculated as described below based upon the Payout Percentage (see table below in Section 3(c)).

(b)The Performance Measure determines (1) the number of Holder’s Units for which the Forfeiture Restrictions shall lapse on the Measurement Date, and (2) the number of shares of Stock delivered upon settlement of such Units. The number of Holder’s Units which cease to be subject to Forfeiture Restrictions on the Measurement Date, and the number of shares of Stock delivered with respect to Holder’s Units, is based upon the Company’s Average Return on Invested Capital (“Average ROIC”) for the three year period beginning on _________, ____ and ending on and including _________, ____ (“Performance Period”). As provided in Section

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3(c) below, the Performance Measure will be satisfied based on the Company’s Average ROIC during the Performance Period, as certified in writing by the Committee following the end of the Performance Period.

(c)Subject to the level of achievement of Average ROIC, the Forfeiture Restrictions shall lapse with regard to the percentage of Holder’s Units designated in the table below. If Average ROIC is between the levels designated in the table below, then the Payout Percentage shall be adjusted based on linear interpolation between applicable percentages. For example, (1) if Average ROIC is ______%, then the payout percentage would be ______% of the Target Level, and (2) if Average ROIC is ______%, then the payout percentage would be ______% of the Target Level.

Level	Average ROIC	Payout Percentage
Maximum	____%	____% of Target Level
Above Target	____%	____% of Target Level
Target	____%	____% of Target Level
Threshold	____%	____% of Target Level
	Below ____%	0%

(d)Average ROIC shall be calculated as the arithmetic average of Return on Invested Capital for each fiscal year that comprises the Performance Period.

“Return on Invested Capital” is defined as Adjusted EBITDA less cash taxes paid, divided by Consolidated Invested Capital.

“Adjusted EBITDA” is defined as net income (loss) plus restructuring charges (credits), asset write-down charges, acquisition and integration costs, depreciation, amortization and accretion, amortization of prepaid lease purchase price adjustments, interest expense and amortization of deferred financing costs, net, (gains) losses on retirement of long-term obligations, net (gain) loss on interest rate swaps, (gains) losses on foreign currency swaps, impairment of available-for-sale securities, interest income, other (income) expense, (benefit) provision for income taxes, net, (income) loss from discontinued operations, (gain) loss on sale of discontinued operations, cumulative effect of a change in accounting principle and stock-based compensation expense, net.

“Consolidated Invested Capital” is defined as the historical gross investment in (1) property and equipment (excluding the impact of construction in process), (2) site rental contracts and tenant relationships and (3) goodwill.

(e)In addition to any other authority or powers granted to the Committee herein or in the 2022 Plan, the Committee shall have the authority to interpret and determine the application and calculation of any matter relating to the determination of Average ROIC, including any terms in the Agreement or this Exhibit B related thereto. The Committee shall also

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have the power to make any and all adjustments it deems appropriate (1) in recognition of unusual or nonrecurring events affecting the Company or the financial statements of the Company, or of any changes in applicable laws, regulations or accounting principles or (2) to reflect any changes in the Company’s outstanding Stock, including by reason of subdivision or consolidation of Stock or other capital readjustment, the payment of a stock dividend on the Stock, other increase or reduction in the number of shares of Stock outstanding, recapitalizations, reorganizations, mergers, consolidations, combinations, split-ups, split-offs, spin-offs, exchanges or other relevant changes in capitalization or distributions to holders of Stock. The determination of the Committee with respect to any such matter shall be conclusive.

(f)Holder shall receive a Dividend Equivalent payment with respect to each share of Distributed Stock as if Holder had held such share since the Grant Date.

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Exhibit C

GRANT ID: ___________

GRANT DATE:_________, ____

Measures Applicable To

Restricted Stock Unit Agreement

(2022 Long-Term Incentive Plan)

Performance Award - Relative TSR Award

Name:                            _____________________

Target Number of Units (“Target Level”):    _____________________

The terms of this Exhibit C shall apply to the Units listed above. The terms of any other Exhibit to Holder’s Restricted Stock Unit Agreement shall only apply to the Units listed on such Exhibit.

    1.    General. The Holder’s Units shall become vested based on the satisfaction of both the Time Measure and the Performance Measure, each as outlined below. The Units subject to this Exhibit are hereby designated as Performance Awards for purposes of Article IX of the 2022 Plan. The initial number of Units specified above in this Exhibit as the “Target Level” is the “target” number of shares of Stock that may be delivered upon settlement of the Units subject to this Exhibit. Such initial number of Units shall be adjusted based on the attainment of the Performance Measure described in Section 3 below.

    2.    Time Measure. The Time Measure shall be satisfied with respect to a Unit if the Holder is an employee, consultant or a member of the board of directors (or a similar position) of the Group for the period beginning on the Grant Date and ending _________, ____, which shall be the “Time Vesting Date” for each Unit subject to this Exhibit C.

    3.    Performance Measure.

(a)The number of Units subject to this Exhibit C is listed above, which number of Units assumes the Performance Measure described in this Section 3 is attained at the Target Level. The final number of Units, if any, subject to this Exhibit C at the end of the Performance Period shall be calculated as described below based upon the Payout Percentage (see table below in Section 3(c)).

(b)The Performance Measure determines (1) the number of Holder’s Units for which the Forfeiture Restrictions shall lapse on the Measurement Date, and (2) the number of shares of Stock delivered upon settlement of such Units. The number of Holder’s Units which cease to be subject to Forfeiture Restrictions on the Measurement Date, and the number of shares of Stock delivered with respect to Holder’s Units, is based upon the Company’s Annualized Total Stockholder Return (“Annualized TSR”) ranking relative to the TSR Peer Group (“Relative

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TSR Performance Rank”) for the three year period beginning on _________, ____ and ending on and including _________, ____ (“Performance Period”). For this purpose, the companies included in the Standard & Poor’s 500 index on _________, ____ will be the “TSR Peer Group”. As provided in Section 3(c) below, the Performance Measure will be satisfied based on the Company’s Relative TSR during the Performance Period, as certified in writing by the Committee following the end of the Performance Period.

(c)Subject to the Company’s Relative TSR Performance Rank, the Forfeiture Restrictions shall lapse with regard to the percentage of Holder’s Units designated in the table below. If the Company’s Relative TSR Performance Rank is between the levels designated in the table below, then the Payout Percentage (shown in the table below) shall be adjusted based on linear interpolation between applicable percentages. For example, (1) if the Company’s Relative TSR is in the ___th percentile, then the payout percentage would be ___% of the Target Level, and (2) if the Company’s Relative TSR is in the ___th percentile, then the payout percentage would be ___% of the Target Level.

Level	Relative TSR Performance Rank	Payout Percentage
Maximum	___th Percentile and above	____% of Target Level
Target	___th percentile	____% of Target Level
Threshold	___th percentile	____% of Target Level
	Below ___th percentile	0%

Notwithstanding the above, if the Company’s Annualized TSR is negative for the Performance Period, the Payout Percentage shall be capped at 100% of the Target Level.

(d)Annualized TSR shall be calculated as follows:

where n represents the number of years over which Annualized TSR is measured.

The “Ending Average Stock Price” shall be calculated as the average Closing Stock Price for the last 10 trading days of the Performance Period.

The “Beginning Average Stock Price” shall be calculated as the average Closing Stock Price for the last 10 trading days prior to the first day of the Performance Period.

The “Closing Stock Price” of a share of Stock shall be the closing quotation on the New York Stock Exchange (“NYSE”) for the applicable date (or an applicable substitute exchange or quotation system if the NYSE is no longer applicable).

-11-

“Reinvested Dividend Amount” shall be calculated as the sum of the total dividends paid1 on one share of Stock during the Performance Period, assuming reinvestment of such dividends in such stock (based on the Closing Stock Price of such Stock on the ex-dividend date). For the avoidance of doubt, it is intended that the foregoing calculation of Reinvested Dividend Amount shall take into account not only the reinvestment of dividends in a share of Stock but also capital appreciation or depreciation in the shares deemed acquired by such reinvestment.

The Annualized TSR for the TSR Peer Group companies will be determined using the calculation method described above based on information specific to the TSR Peer Group companies.

(e)In addition to any other authority or powers granted to the Committee herein or in the 2022 Plan, the Committee shall have the authority to interpret and determine the application and calculation of any matter relating to the determination of Annualized TSR and Relative TSR Performance Rank, including any terms in the Agreement or this Exhibit C related thereto. The Committee shall also have the power to make any and all adjustments it deems appropriate to reflect any changes in the Company’s outstanding Stock, including by reason of subdivision or consolidation of Stock or other capital readjustment, the payment of a stock dividend on the Stock, other increase or reduction in the number of shares of Stock outstanding, recapitalizations, reorganizations, mergers, consolidations, combinations, split-ups, split-offs, spin-offs, exchanges or other relevant changes in capitalization or distributions to holders of Stock. The determination of the Committee with respect to any such matter shall be conclusive.

(f)Adjustments to TSR Peer Group. The TSR Peer Group may be adjusted or changed by the Committee as circumstances warrant, including the following:

    (1)    If a TSR Peer Group company becomes bankrupt, the bankrupt company will remain in the TSR Peer Group positioned at one level below the lowest performing non-bankrupt TSR Peer Group. In the case of multiple bankruptcies, the bankrupt TSR Peer Group companies will be positioned below the non-bankrupt companies in chronological order by bankruptcy date with the first to go bankrupt at the bottom.

    (2)    If a TSR Peer Group company is acquired by another company, including through a management buy-out or going-private transaction, the acquired TSR Peer

1The relevant date for determining whether a dividend is included in the calculation of “Reinvested Dividend Amount” is the ex-dividend date (and not the payment date). In the event that the stock of the measured company goes ex-dividend during the Performance Period (including the 10-day trading period during which the Ending Average Stock Price is to be calculated), such dividend shall be included in the determination of “Reinvested Dividend Amount,” notwithstanding the fact that the payment date of such dividend may actually occur after the conclusion of the Performance Period. In the event that the stock of the measured company goes ex-dividend prior to the commencement of the Performance Period (for example, during the 10-day trading period during which the Beginning Average Stock Price is to be calculated), such dividend shall not be included in the termination of “Reinvested Dividend Amount,” notwithstanding the fact that the payment date of such dividend may actually occur during the Performance Period.

-12-

Group company will be removed from the TSR Peer Group for the entire Performance Period; provided that if the acquired TSR Peer Group company became bankrupt prior to its acquisition it shall be treated as provided in paragraph (1), above, or if it shall become delisted according to paragraph (5) below prior to its acquisition it shall be treated as provided in paragraph (5).

    (3)    If a TSR Peer Group company spins-off a portion a portion of its business in a manner which results in the TSR Peer Group company and the spin-off company both being publicly traded, the TSR Peer Group company will be removed from the TSR Peer Group for the entire Performance Period and the spin-off company will not be added to the TSR Peer Group.

    (4)    If a TSR Peer Group company acquires another company, the acquiring TSR Peer Group company will remain in the TSR Peer Group for the Performance Period.

    (5)    If a TSR Peer Group company is delisted from either the New York Stock Exchange (NYSE) or the National Association of Securities Dealers Automated Quotations (NASDAQ) such that it is no longer listed on either exchange, such delisted TSR Peer Group company will remain in the TSR Peer Group positioned at one level below the lowest performing listed company and above the highest ranked bankrupt TSR Peer Group company (see paragraph (1) above). In the case of multiple delistings, the delisted TSR Peer Group companies will be positioned below the listed and above the bankrupt TSR Peer Group companies in chronological order by delisting date with the first to be delisted at the bottom of the delisted companies. If a delisted company shall become bankrupt, it shall be treated as provided in paragraph (1) above. If a delisted company shall be later acquired, it shall be treated as a delisted company under this paragraph. If a delisted company shall relist during the Performance Period, it shall remain in its relative delisted position determined under this paragraph.

    (6)    If the Company’s or any TSR Peer Group company’s stock splits (or if there are other similar subdivisions, consolidations or changes in such company’s stock or capitalization), such company’s Annualized TSR performance will be adjusted for the stock split so as not to give an advantage or disadvantage to such company by comparison to the other TSR Peer Group companies.

(g)Holder shall receive Dividend Equivalent payments with respect to each share of Distributed Stock as if Holder had held such share since the Grant Date.

-13-

EX-31.1

Exhibit 31.1

Certification

For the Quarter Ended March 31, 2024

I, Steven J. Moskowitz, certify that:

1.I have reviewed this report on Form 10-Q of Crown Castle 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.

Date:  May 1, 2024

/s/ Steven J. Moskowitz

Steven J. Moskowitz

President and Chief Executive Officer

EX-31.2

Exhibit 31.2

Certification

For the Quarter Ended March 31, 2024

I, Daniel K. Schlanger, certify that:

1.I have reviewed this report on Form 10-Q of Crown Castle 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.

Date:  May 1, 2024

/s/ Daniel K. Schlanger

Daniel K. Schlanger
Executive Vice President and 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 Quarterly Report on Form 10-Q of Crown Castle Inc., a Delaware Corporation ("Company"), for the period ended March 31, 2024 as filed with the Securities and Exchange Commission on the date hereof ("Report"), each of the undersigned officers of the Company hereby certifies pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of such officer's knowledge:

1)the Report 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 as of March 31, 2024 (the last date of the period covered by the Report).

/s/ Steven J. Moskowitz

Steven J. Moskowitz

President and Chief Executive Officer

May 1, 2024

/s/ Daniel K. Schlanger

Daniel K. Schlanger
Executive Vice President and Chief Financial Officer

May 1, 2024

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2024	Apr. 29, 2024
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2024
Document Transition Report	false
Entity File Number	001-16441
Entity Registrant Name	CROWN CASTLE INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	76-0470458
Entity Address, Address Line One	8020 Katy Freeway
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77024
City Area Code	713
Local Phone Number	570-3000
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	CCI
Security Exchange Name	NYSE
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 Common Stock, Shares Outstanding		434,523,224
Entity Central Index Key	0001051470
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Amendment Flag	false

XML

Condensed Consolidated Balance Sheet - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Assets, Current [Abstract]
Cash and cash equivalents	$ 125	$ 105
Restricted cash and cash equivalents, current	168	171
Receivables, net	380	481
Prepaid expenses	130	103
Deferred site rental receivables	123	116
Other current assets	51	56
Assets, Current, Total	977	1,032
Deferred site rental receivables	2,292	2,239
Property and equipment, net of accumulated depreciation of $14,600 and $14,279, respectively	15,677	15,666
Operating lease right-of-use assets	5,990	6,187
Goodwill	10,085	10,085
Other Intangible Assets, Net	3,073	3,179
Other assets, net	137	139
Assets, Total	38,231	38,527
Liabilities, Current [Abstract]
Accounts payable	216	252
Accrued interest	160	219
Deferred revenues	514	605
Other accrued liabilities	279	342
Current maturities of debt and other obligations	854	835
Current portion of operating lease liabilities	313	332
Liabilities, Current, Total	2,336	2,585
Debt and other long-term obligations	22,560	22,086
Operating lease liabilities	5,397	5,561
Other long-term liabilities	1,890	1,914
Liabilities, Total	$ 32,183	$ 32,146
Common stock, par value	$ 0.01	$ 0.01
Stockholders' Equity Attributable to Parent [Abstract]
Common Stock, Value, Issued	$ 4	$ 4
Additional Paid in Capital	18,310	18,270
Accumulated Other Comprehensive Income (Loss), Net of Tax	(5)	(4)
Retained Earnings (Accumulated Deficit)	(12,261)	(11,889)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Total	6,048	6,381
Liabilities and Equity, Total	$ 38,231	$ 38,527

XML

Condensed Consolidated Balance Sheet (Parenthetical) - USD ($) shares in Millions, $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Condensed Consolidated Balance Sheet (Parenthetical) [Abstract]
Accumulated depreciation, property and equipment	$ 14,600	$ 14,279
Common stock, shares outstanding	435	434
Common stock, shares authorized	1,200	1,200
Common stock, par value	$ 0.01	$ 0.01

XML

Condensed Consolidated Statement of Operations and Comprehensive Income (Loss) - USD ($) shares in Millions, $ in Millions		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023
Net revenues:
Site Rental		$ 1,588	$ 1,624
Services and other		53	149
Net Revenues		1,641	1,773
Operating expenses:
Site rental	[1]	430	415
Services and other	[1]	34	104
Selling, general and administrative		183	195
Asset write-down charges		6	0
Depreciation, amortization and accretion		439	431
Restructuring Charges		11	0
Total operating expenses		1,103	1,145
Operating income (loss)		538	628
Interest expense and amortization of deferred financing costs, net		(226)	(202)
Interest income		4	2
Other income (expense)		2	(3)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest		318	425
Benefit (provision) for income taxes		(7)	(7)
Net Income (Loss) Attributable to Parent		311	418
Foreign currency translation adjustments	[2]	(1)	(1)
Total other comprehensive income (loss)	[2]	(1)	(1)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		$ 310	$ 417
Earnings Per Share, Basic		$ 0.72	$ 0.97
Earnings Per Share, Diluted		$ 0.71	$ 0.97
Weighted-average common shares outstanding, basic		434	433
Weighted-average common shares outstanding, diluted		435	434

[1] Exclusive of depreciation, amortization and accretion shown separately.

[2] See the condensed consolidated statement of operations and other comprehensive income (loss) for the components of other comprehensive income (loss).

XML

Condensed Consolidated Statement of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows from operating activities:
Net Income (Loss) Attributable to Parent	$ 311	$ 418
Adjustments to reconcile net income (loss) from continuing operations to net cash provided by (used for) operating activities:
Depreciation, amortization and accretion	439	431
Amortization of deferred financing costs and other non-cash interest	8	7
Stock-based compensation expense, net	38	41
Asset write-down charges	6	0
Deferred income tax (benefit) provision	4	1
Other non-cash adjustments, net	4	2
Changes in assets and liabilities, excluding the effects of acquisitions:
Increase (decrease) in accrued interest	(59)	(51)
Increase (decrease) in accounts payable	(19)	(5)
Increase (decrease) in other liabilities	(160)	(127)
Decrease (increase) in receivables	101	28
Decrease (increase) in other assets	(74)	(139)
Net cash provided by (used for) operating activities	599	606
Cash flows from investing activities:
Capital expenditures	(320)	(341)
Payments for acquisitions, net of cash acquired	(1)	(67)
Other investing activities, net	1	1
Net cash provided by (used for) investing activities	(320)	(407)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	0	999
Principal payments on debt and other long-term obligations	(14)	(19)
Borrowings under revolving credit facility	0	1,434
Payments under revolving credit facility	(670)	(1,305)
Net issuances (repayments) under commercial paper program	1,138	(524)
Payments for financing costs	0	(10)
Purchases of common stock	(27)	(28)
Dividends/distributions paid on common stock	(688)	(686)
Net cash provided by (used for) financing activities	(261)	(139)
Net increase (decrease) in cash, cash equivalents, and restricted cash and cash equivalents	18	60
Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	(1)	1
Cash, cash equivalents and restricted cash and cash equivalents at beginning of period	281	327
Cash, cash equivalents and restricted cash and cash equivalents at end of period	$ 298	$ 388

XML

Condensed Consolidated Statement of Equity - USD ($) shares in Millions, $ in Millions		Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Dividends/Distributions in Excess of Earnings [Member]	AOCI Attributable to Parent
Balance, shares Period Start at Dec. 31, 2022			433
Balance, value Period Start at Dec. 31, 2022		$ 7,449	$ 4	$ 18,116	$ (10,666)	$ (5)
Stock-based compensation related activity, net of forfeitures, value		66		66
Purchases and retirement of common stock, value		(28)		(28)
Common stock dividends/distributions		(681)			(681)
Net income (loss)		418			418
Balance, shares Period End at Mar. 31, 2023			434
Balance, value Period End at Mar. 31, 2023		7,223	$ 4	18,154	(10,929)	(6)
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period			1
Total other comprehensive income (loss)	[1]	(1)				(1)
Foreign currency translation adjustments	[1]	$ (1)
Balance, shares Period Start at Dec. 31, 2023		434	434
Balance, value Period Start at Dec. 31, 2023		$ 6,381	$ 4	18,270	(11,889)	(4)
Stock-based compensation related activity, net of forfeitures, value		67		67
Purchases and retirement of common stock, value		(27)		(27)
Common stock dividends/distributions		(683)			(683)
Net income (loss)		$ 311			311
Balance, shares Period End at Mar. 31, 2024		435	435
Balance, value Period End at Mar. 31, 2024		$ 6,048	$ 4	$ 18,310	$ (12,261)	(5)
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period			1
Total other comprehensive income (loss)	[1]	(1)				$ (1)
Foreign currency translation adjustments	[1]	$ (1)

[1] See the condensed consolidated statement of operations and other comprehensive income (loss) for the components of other comprehensive income (loss).

XML

General

3 Months Ended

Mar. 31, 2024

General

General

General

The information contained in the following notes to the condensed consolidated financial statements is condensed from that which would appear in the annual consolidated financial statements; accordingly, the condensed consolidated financial statements included herein should be reviewed in conjunction with the consolidated financial statements for the fiscal year ended December 31, 2023, and related notes thereto, included in the 2023 Form 10-K filed by Crown Castle Inc. ("CCI") with the SEC. Capitalized terms used but not defined in these notes to the condensed consolidated financial statements have the same meaning given to them in the 2023 Form 10-K. References to the "Company" refer to CCI and its predecessor, as applicable, and their subsidiaries, unless otherwise indicated or the context indicates otherwise. As used herein, the term "including," and any variation thereof means "including without limitation." The use of the word "or" herein is not exclusive. Unless the context suggests otherwise, references to "U.S." are to the United States of America and Puerto Rico, collectively.

The Company owns, operates and leases shared communications infrastructure that is geographically dispersed throughout the U.S., including (1) towers and other structures, such as rooftops (collectively, "towers"), and (2) fiber primarily supporting small cell networks ("small cells") and fiber solutions. The Company's towers, small cells and fiber assets are collectively referred to herein as "communications infrastructure," and the Company's customers on its communications infrastructure are referred to herein as "tenants."

The Company's core business is providing access, including space or capacity, to its shared communications infrastructure via long-term contracts in various forms, including lease, license, sublease and service agreements (collectively, "tenant contracts").

The Company's operating segments consist of (1) Towers and (2) Fiber. See note 10.

As part of the Company's effort to provide comprehensive communications infrastructure solutions, as an ancillary business, the Company also offers certain services primarily relating to its Towers segment. For the periods presented, such services predominately consisted of (1) site development services relating to existing or new tenant equipment installations, including: site acquisition, architectural and engineering, or zoning and permitting (collectively, "site development services") and (2) tenant equipment installation or subsequent augmentations (collectively, "installation services"). See note 12 for a discussion of the Company's July 2023 restructuring ("Plan"), which included discontinuing installation services as a Towers product offering.

The Company operates as a REIT for U.S. federal income tax purposes. In addition, the Company has certain taxable REIT subsidiaries ("TRSs"). See note 6.

Approximately 53% of the Company's towers are leased or subleased or operated and managed under master leases, subleases, and other agreements with AT&T and T-Mobile (including those which T-Mobile assumed in its merger with Sprint). The Company has the option to purchase these towers at the end of their respective lease terms. The Company has no obligation to exercise such purchase options.

Basis of Presentation

The condensed consolidated financial statements included herein are unaudited; however, they include all adjustments (consisting only of normal recurring adjustments) which, in the opinion of management, are necessary to state fairly the condensed consolidated financial position of the Company as of March 31, 2024, the condensed consolidated results of operations for the three months ended March 31, 2024 and 2023, and the condensed consolidated cash flows for the three months ended March 31, 2024 and 2023. The year-end condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by GAAP. The results of operations for the interim periods presented are not necessarily indicative of the results to be expected for the full year.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities as of the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

XML

Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Significant Accounting Policies

Summary of Significant Accounting Policies

Recently Adopted Accounting Pronouncements

No accounting pronouncements adopted during the three months ended March 31, 2024 had a material impact on the Company's condensed consolidated financial statements.

Recent Accounting Pronouncements Not Yet Adopted

In November 2023, the FASB issued new guidance that is designed to improve reportable segment disclosure requirements, primarily through enhanced disclosure of significant segment expenses. The new guidance also expands interim segment disclosure requirements and requires disclosure of the position and title of the Company's chief operating decision-maker. The guidance will be effective for the Company's fiscal year ending December 31, 2024 and for interim periods starting in the first quarter of fiscal year 2025 with early adoption permitted. The guidance is required to be applied retrospectively to each prior reporting period presented. The Company is currently evaluating the effect of the guidance, including the impact on its consolidated financial statements and related disclosures.

In December 2023, the FASB issued new guidance that enhances the transparency and decision usefulness of income tax disclosures, primarily through changes to the rate reconciliation and income taxes paid disclosures. The guidance will be effective for the Company's fiscal year ending December 31, 2025, and can be applied prospectively or retrospectively, with early adoption permitted. The Company is currently evaluating the effect of the guidance, including the impact on its consolidated financial statements and related disclosures.

XML

Revenues (Notes)

3 Months Ended

Mar. 31, 2024

Revenue from Contract with Customer [Abstract]

Revenue from Contract with Customer [Text Block]

Revenues

Site Rental Revenues

The Company generates site rental revenues from its core business by providing tenants with access, including space or capacity, to its shared communications infrastructure via long-term tenant contracts in various forms, including lease, license, sublease and service agreements. Typically, providing such access over the length of the tenant contract term represents the Company’s sole performance obligation under its tenant contracts.

Site rental revenues from the Company's tenant contracts are recognized on a straight-line, ratable basis over the fixed, non-cancelable term of the relevant tenant contract, which generally ranges between five to 15 years for wireless tenants and one to 20 years for fiber solutions tenants (including from organizations with high-bandwidth and multi-location demands), regardless of whether the payments from the tenant are received in equal monthly amounts during the life of the tenant contract. Certain of the Company's tenant contracts contain (1) fixed escalation clauses (such as fixed dollar or fixed percentage increases) or inflation-based escalation clauses (such as those tied to the CPI), (2) multiple renewal periods exercisable at the tenant's option and (3) only limited termination rights at the applicable tenant's option through the current term. If the payment terms call for fixed escalators, upfront payments, or rent-free periods, the revenue is recognized on a straight-line basis over the fixed, non-cancelable term of the tenant contract. When calculating straight-line rental revenues, the Company considers all fixed elements of tenant contractual escalation provisions, even if such escalation provisions contain a variable element in addition to a minimum. The Company's assets related to straight-line site rental revenues are recorded within "Current portion of deferred site rental receivables" and "Deferred site rental receivables" on the Company's condensed consolidated balance sheet. Amounts billed or received prior to being earned are deferred and reflected in "Deferred revenues" and "Other long-term liabilities" on the Company's condensed consolidated balance sheet. Amounts to which the Company has an unconditional right to payment, which are related to both satisfied or partially satisfied performance obligations, are recorded within "Receivables, net" on the Company's condensed consolidated balance sheet.

Payments Associated with Sprint Cancellations.

For the three months ended March 31, 2024 and 2023, site rental revenues include $3 million and $48 million, respectively, of payments in the Company's Fiber segment to satisfy the remaining rental obligations of certain canceled Sprint leases as a result of the T-Mobile US, Inc. and Sprint network consolidation.

Services and Other Revenues

As part of the Company’s effort to provide comprehensive communications infrastructure solutions, as an ancillary business, the Company offers certain services primarily relating to its Towers segment, predominately consisting of (1) site development services and (2) installation services. See note 12 for a discussion of the Company's restructuring Plan, which

included discontinuing installation services as a Towers product offering. Upon contract commencement, the Company assesses its services to tenants and identifies performance obligations for each promise to provide a distinct service.

The Company may have multiple performance obligations for site development services, which primarily include: structural analysis, zoning, permitting and construction drawings. For each of these performance obligations, services revenues are recognized at completion of the applicable performance obligation, which represents the point at which the Company believes it has transferred goods or services to the tenant. The services revenue recognized is based on an allocation of the transaction price among the performance obligations in a respective tenant contract based on estimated standalone selling price. The volume and mix of site development services may vary among tenant contracts and may include a combination of some or all of the above performance obligations. Amounts are billed per contractual milestones, with payments generally due within 45 to 90 days, and generally do not contain variable-consideration provisions. The transaction price for the Company's tower installation services consists of amounts for (1) permanent improvements to the Company's towers that represent a lease component and (2) the performance of the service. Amounts under the Company's tower installation service agreements that represent a lease component are recognized as site rental revenues on a straight-line basis over the length of the associated estimated lease term. For the performance of the installation service, the Company has one performance obligation, which is satisfied at the time of the applicable installation or augmentation and recognized as services and other revenues on the Company's condensed consolidated statement of operations and comprehensive income (loss). Since performance obligations are typically satisfied prior to receiving payment from tenants, the unconditional right to payment is recorded within "Receivables, net" on the Company’s condensed consolidated balance sheet. Generally, the services the Company provides to its tenants have a duration of one year or less.

Additional Information on Revenues

As of January 1, 2024 and March 31, 2024, $2.1 billion and $2.0 billion of unrecognized revenues, respectively, were reported in "Deferred revenues" and "Other long-term liabilities" on the Company's condensed consolidated balance sheet. During the three months ended March 31, 2024, approximately $139 million of the January 1, 2024 unrecognized revenues balance was recognized as revenues. As of January 1, 2023, $2.3 billion of unrecognized revenues were reported in "Deferred revenues" and "Other long-term liabilities" on the Company's condensed consolidated balance sheet. During the three months ended March 31, 2023, approximately $166 million of the January 1, 2023 unrecognized revenues balance was recognized as revenues.

The following table is a summary of the contracted amounts owed to the Company by tenants pursuant to tenant contracts in effect as of March 31, 2024.

	Nine Months Ending December 31,		Years Ending December 31,
	2024		2025		2026		2027		2028		Thereafter		Total
Contracted amounts(a)	$	3,826	$	4,804	$	4,653	$	4,545	$	4,330	$	15,966	$	38,124

(a)Based on the nature of the contract, tenant contracts are accounted for pursuant to relevant lease accounting (ASC 842) or revenue accounting (ASC 606) guidance. Excludes amounts related to services, as those contracts generally have a duration of one year or less.

See note 10 for further information regarding the Company's operating segments.

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Debt and Other Obligations

3 Months Ended

Mar. 31, 2024

Debt and Other Obligations [Abstract]

Debt Disclosure

Debt and Other Obligations

The table below sets forth the Company's debt and other obligations as of March 31, 2024.

	Original Issue Date		Final Maturity Date(a)		Balance as of March 31, 2024			Balance as of December 31, 2023		Stated Interest Rate as of March 31, 2024(a)(b)
Secured Notes, Series 2009-1, Class A-2	July 2009		Aug. 2029		$	38		$	40	9.0	%
Tower Revenue Notes, Series 2015-2	May 2015		May 2045	(c)	699			698		3.7	%
Tower Revenue Notes, Series 2018-2	July 2018		July 2048	(c)	746			746		4.2	%
Finance leases and other obligations	Various	(d)	Various	(d)	287			270		Various		(d)
Total secured debt					1,770			1,754
2016 Revolver	Jan. 2016		July 2027		—		(e)	670		N/A		(f)
2016 Term Loan A	Jan. 2016		July 2027		1,162			1,162		6.4	%	(f)
Commercial Paper Notes	Various	(g)	Various	(g)	1,138		(g)	—		5.9	%
3.200% Senior Notes	Aug. 2017		Sept. 2024		750			749		3.2	%
1.350% Senior Notes	June 2020		July 2025		498			498		1.4	%
4.450% Senior Notes	Feb. 2016		Feb. 2026		898			898		4.5	%
3.700% Senior Notes	May 2016		June 2026		748			748		3.7	%
1.050% Senior Notes	Feb. 2021		July 2026		995			994		1.1	%
4.000% Senior Notes	Feb. 2017		Mar. 2027		498			498		4.0	%
2.900% Senior Notes	Mar. 2022		Mar. 2027		744			744		2.9	%
3.650% Senior Notes	Aug. 2017		Sept. 2027		997			997		3.7	%
5.000% Senior Notes	Jan. 2023		Jan. 2028		992			991		5.0	%
3.800% Senior Notes	Jan. 2018		Feb. 2028		995			995		3.8	%
4.800% Senior Notes	Apr. 2023		Sept. 2028		594			594		4.8	%
4.300% Senior Notes	Feb. 2019		Feb. 2029		595			595		4.3	%
5.600% Senior Notes	Dec. 2023		June 2029		741			740		5.6	%
3.100% Senior Notes	Aug. 2019		Nov. 2029		546			546		3.1	%
3.300% Senior Notes	Apr. 2020		July 2030		741			741		3.3	%
2.250% Senior Notes	June 2020		Jan. 2031		1,092			1,091		2.3	%
2.100% Senior Notes	Feb. 2021		Apr. 2031		991			990		2.1	%
2.500% Senior Notes	June 2021		July 2031		743			743		2.5	%
5.100% Senior Notes	Apr. 2023		May 2033		743			743		5.1	%
5.800% Senior Notes	Dec. 2023		Mar. 2034		742			740		5.8	%
2.900% Senior Notes	Feb. 2021		Apr. 2041		1,235			1,234		2.9	%
4.750% Senior Notes	May 2017		May 2047		344			344		4.8	%
5.200% Senior Notes	Feb. 2019		Feb. 2049		396			396		5.2	%
4.000% Senior Notes	Aug. 2019		Nov. 2049		346			346		4.0	%
4.150% Senior Notes	Apr. 2020		July 2050		490			490		4.2	%
3.250% Senior Notes	June 2020		Jan. 2051		890			890		3.3	%
Total unsecured debt					21,644			21,167
Total debt and other obligations					23,414			22,921
Less: current maturities of debt and other obligations					854			835
Non-current portion of debt and other long-term obligations					$	22,560		$	22,086

(a)See the 2023 Form 10-K, including note 7 to the consolidated financial statements, for additional information regarding the maturity and principal amortization provisions and interest rates relating to the Company's indebtedness.

(b)Represents the weighted-average stated interest rate, as applicable.

(c)If the Tower Revenue Notes, Series 2015-2 and Series 2018-2 (collectively, "Tower Revenue Notes") are not paid in full on or prior to an applicable anticipated repayment date, then Excess Cash Flow (as defined in the indenture governing the terms of such notes) of the issuers of such notes will be used to repay principal of the applicable series and class of the Tower Revenue Notes, and additional interest (of an additional approximately 5% per annum) will accrue on the respective Tower Revenue Notes. As of March 31, 2024, the Tower Revenue Notes, Series 2015-2 and Series 2018-2 have principal amounts of $700 million and $750 million, with anticipated repayment dates in 2025 and 2028, respectively.

(d)The Company's finance leases and other obligations relate to land, fiber, vehicles, and other assets and bear interest rates up to 10% and mature in periods ranging from less than one year to approximately 25 years.

(e)As of March 31, 2024, the undrawn availability under the Company's senior unsecured revolving credit facility ("2016 Revolver") was $7.0 billion.

(f)Both the 2016 Revolver and the senior unsecured term loan A facility ("2016 Term Loan A" and, collectively, "2016 Credit Facility") bear interest, at the Company's option, at either (1) Term SOFR plus (i) a credit spread adjustment of 0.10% per annum and (ii) a credit spread ranging from 0.875% to 1.750% per annum or (2) an alternate base rate plus a credit spread ranging from 0.000% to 0.750% per annum, in each case, with the applicable credit spread based on the Company's senior unsecured debt rating. The Company pays a commitment fee ranging from 0.080% to 0.300%, based on the Company's senior unsecured debt rating, per annum on the undrawn available amount under the 2016 Revolver. See the 2023 Form 10-K, including note 7 to the consolidated financial statements, for information regarding potential adjustments to such percentages.

(g)The maturities of the Commercial Paper Notes, when outstanding, may vary but may not exceed 397 days from the date of issue, but there were no Commercial Paper Notes issued or outstanding during the period that had original maturities greater than three months. The Commercial Paper Notes are issued under customary terms in the commercial paper market and are issued at a discount from par or, alternatively, can be issued at par and bear varying interest rates on a fixed or floating basis. At any point in time, the Company intends to maintain available commitments under its 2016 Revolver in an amount at least equal to the amount of Commercial Paper Notes outstanding. While any outstanding Commercial Paper Notes generally have short-term maturities, the Company classifies the outstanding issuances, when applicable, as long-term based on its ability and intent to refinance the outstanding issuances on a long-term basis.

Scheduled Principal Payments and Final Maturities

The following are the scheduled principal payments and final maturities of the total debt and other long-term obligations of the Company outstanding as of March 31, 2024, which do not consider the principal payments that will commence following the anticipated repayment dates on the Tower Revenue Notes.

	Nine Months Ending December 31,			Years Ending December 31,										Total Cash Obligations		Unamortized Adjustments, Net		Total Debt and Other Obligations Outstanding
	2024			2025		2026		2027		2028		Thereafter
Scheduled principal payments and final maturities	$	1,969	(a)	$	603	$	2,780	$	3,251	$	2,630	$	12,343	$	23,576	$	(162)	$	23,414

(a)Predominately consists of outstanding indebtedness under the CP Program as discussed in footnote (g) of the preceding table.

Interest Expense and Amortization of Deferred Financing Costs, Net

The components of interest expense and amortization of deferred financing costs, net are as follows:

	Three Months Ended March 31,
	2024		2023
Interest expense on debt obligations	$	223	$	198
Amortization of deferred financing costs and adjustments on long-term debt	8		7
Capitalized interest	(5)		(3)
Total	$	226	$	202

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Fair Value Disclosures

3 Months Ended

Mar. 31, 2024

Fair Value Disclosures [Abstract]

Fair Value Disclosures

Fair Value Disclosures

	Level in Fair Value Hierarchy	March 31, 2024				December 31, 2023
		Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets:
Cash and cash equivalents	1	$	125	$	125	$	105	$	105
Restricted cash and cash equivalents, current and non-current	1	173		173		176		176
Liabilities:
Total debt and other obligations	2	23,414		21,580		22,921		21,201

The fair values of cash and cash equivalents and restricted cash and cash equivalents approximate the carrying values. The Company determines the fair value of its debt securities based on indicative, non-binding quotes from brokers. Quotes from brokers require judgment and are based on the brokers' interpretation of market information, including implied credit spreads for similar borrowings on recent trades or bid/ask prices or quotes from active markets if available. Since December 31, 2023, there have been no changes in the Company's valuation techniques used to measure fair values.

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Income Taxes

3 Months Ended

Mar. 31, 2024

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The Company operates as a REIT for U.S. federal income tax purposes. As a REIT, the Company is generally entitled to a deduction for dividends that it pays and, therefore, is not subject to U.S. federal corporate income tax on its net taxable income that is currently distributed to its stockholders. The Company may be subject to certain federal, state, local and foreign taxes on its income, including (1) taxes on any undistributed income and (2) taxes related to the TRSs. In addition, the Company could, under certain circumstances, be required to pay an excise or penalty tax, which could be significant in amount, in order to utilize one or more relief provisions under the Internal Revenue Code of 1986, as amended, to maintain qualification for taxation as a REIT.

The Company's TRS assets and operations will continue to be subject, as applicable, to federal and state corporate income taxes or to foreign taxes in the jurisdictions in which such assets and operations are located. The Company's foreign assets and operations (including its tower operations in Puerto Rico) are subject to foreign income taxes in the jurisdictions in which such assets and operations are located, regardless of whether they are included in a TRS or not.

For the three months ended March 31, 2024 and 2023, the Company's effective tax rate differed from the federal statutory rate predominately due to the Company's REIT status, including the dividends paid deduction.

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Per Share Information

3 Months Ended

Mar. 31, 2024

Earnings Per Share [Abstract]

Per Share Information

Per Share Information

Basic net income (loss), per common share, excludes dilution and is computed by dividing net income (loss) by the weighted-average number of common shares outstanding during the period. For the three months ended March 31, 2024 and 2023, diluted net income (loss), per common share, is computed by dividing net income (loss) by the weighted-average number of common shares outstanding during the period, plus any potential dilutive common share equivalents, including shares issuable upon the vesting of restricted stock units ("RSUs") as determined under the treasury stock method.

	Three Months Ended March 31,
	2024		2023
Net income (loss)	$	311	$	418
Weighted-average number of common shares outstanding (in millions):
Basic weighted-average number of common stock outstanding	434		433
Effect of assumed dilution from potential issuance of common shares relating to restricted stock units	1		1
Diluted weighted-average number of common shares outstanding	435		434
Net income (loss), per common share:
Basic	$	0.72	$	0.97
Diluted	$	0.71	$	0.97
Dividends/distributions declared per share of common stock	$	1.565	$	1.565

During the three months ended March 31, 2024, the Company granted one million RSUs to the Company's executives and certain other employees.

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2024

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

The Company is involved in various claims, assessments, lawsuits or proceedings arising in the ordinary course of business. While there are uncertainties inherent in the ultimate outcome of such matters and it is impossible to presently determine the ultimate costs or losses that may be incurred, if any, management believes the adverse resolution of such uncertainties and the incurrence of such costs should not have a material adverse effect on the Company's condensed consolidated financial position or results of operations. The Company and certain of its subsidiaries are also contingently liable for commitments or performance guarantees arising in the ordinary course of business, including certain letters of credit or surety bonds. In addition, as mentioned in note 1, the Company has the option to purchase approximately 53% of its towers at the end of their respective lease terms. The Company has no obligation to exercise such purchase options.

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Equity

3 Months Ended

Mar. 31, 2024

Equity [Abstract]

Equity

Equity

Declaration and Payment of Dividends

During the three months ended March 31, 2024, the following dividends/distributions were declared or paid:

Equity Type	Declaration Date	Record Date	Payment Date	Dividends Per Share		Aggregate Payment Amount(a)
Common Stock	February 21, 2024	March 15, 2024	March 28, 2024	$	1.565	$	683

(a)Inclusive of dividends accrued for holders of unvested RSUs, which will be paid when and if the RSUs vest.

Purchases of the Company's Common Stock

For the three months ended March 31, 2024, the Company purchased 0.3 million shares of its common stock utilizing $27 million in cash. The shares of common stock purchased relate to shares withheld in connection with the payment of withholding taxes upon vesting of RSUs.

2021 "At-the-Market" Stock Offering Program

The Company previously maintained an "at-the-market" stock offering program through which it had the right to issue and sell shares of its common stock having an aggregate gross sales price of up to  $750 million ("2021 ATM Program"). The Company terminated its previously outstanding 2021 ATM Program in March 2024 with the entire gross sales price of $750 million remaining unsold.

2024 "At-the-Market" Stock Offering Program

In March 2024, the Company established a new "at-the-market" stock offering program through which it may issue and sell shares of its common stock having an aggregate gross sales price of up to $750 million ("2024 ATM Program"). Sales under the 2024 ATM Program may be made by means of ordinary brokers' transactions on the NYSE or otherwise at market prices prevailing at the time of sale, at prices related to prevailing market prices or, subject to the Company's specific instructions, at negotiated prices. The Company intends to use the net proceeds from any sales under the 2024 ATM Program for general corporate purposes, which may include (1) the funding of future acquisitions or investments or (2) the repayment or repurchase of any outstanding indebtedness. The Company has not sold any shares of common stock under the 2024 ATM Program.

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Operating Segments

3 Months Ended

Mar. 31, 2024

Segment Reporting [Abstract]

Operating Segments

Operating Segments

The Company's operating segments consist of (1) Towers and (2) Fiber. The Towers segment provides access, including space or capacity, to the Company's more than 40,000 towers geographically dispersed throughout the U.S. The Towers segment also reflects certain ancillary services relating to the Company's towers, predominately consisting of site development services and installation services. See note 12 for a discussion of the Company's restructuring Plan, which included discontinuing installation services as a Towers product offering. The Fiber segment provides access, including space or capacity, to the Company's approximately (1) 115,000 small cells on air or under contract and (2) 90,000 route miles of fiber primarily supporting small cells and fiber solutions geographically dispersed throughout the U.S.

The measurement of profit or loss used by the Company's chief operating decision maker ("CODM") to evaluate the performance of its operating segments is segment operating profit (loss). Additionally, the Company CODM also reviews segment site rental gross margin and segment services and other gross margin. The Company defines segment operating profit (loss) as segment site rental gross margin plus segment services and other gross margin, and segment other operating (income) expense, less segment selling, general and administrative expenses. The Company defines segment site rental gross margin as segment site rental revenues less segment site rental costs of operations, excluding stock-based compensation expense, net and amortization of prepaid lease purchase price adjustments recorded in consolidated site rental costs of operations. The Company defines segment services and other gross margin as segment services and other revenues less segment services and other costs of operations, excluding stock-based compensation expense, net recorded in consolidated services and other costs of operations. All of these measurements are exclusive of depreciation, amortization and accretion, which are shown separately.

The following tables set forth the Company's segment operating results for the three months ended March 31, 2024 and 2023. Costs that are directly attributable to Towers and Fiber are assigned to those respective segments. Additionally, certain

costs are shared across segments and are reflected in the Company's segment measures through allocations that management believes to be reasonable. The "Other" column (1) represents amounts excluded from specific segments, such as restructuring charges (credits), asset write-down charges, acquisition and integration costs, depreciation, amortization and accretion, amortization of prepaid lease purchase price adjustments, interest expense and amortization of deferred financing costs, net, gains (losses) on retirement of long-term obligations, interest income, other income (expense), stock-based compensation expense, net and certain selling, general and administrative expenses, and (2) reconciles segment operating profit (loss) to income (loss) before income taxes, as the amounts are not utilized in assessing each segment’s performance. The "Other" total assets balance includes corporate assets such as cash and cash equivalents and restricted cash and cash equivalents which have not been allocated to specific segments. There are no significant revenues resulting from transactions between the Company's operating segments.

	Three Months Ended March 31, 2024								Three Months Ended March 31, 2023
	Towers		Fiber		Other		Total		Towers		Fiber		Other		Total
Segment site rental revenues	$	1,068	$	520			$	1,588	$	1,081	$	543			$	1,624
Segment services and other revenues	46		7				53		146		3				149
Segment revenues	1,114		527				1,641		1,227		546				1,773
Segment site rental costs of operations	239		182				421		234		172				406
Segment services and other costs of operations	28		4				32		99		2				101
Segment costs of operations(a)(b)	267		186				453		333		174				507
Segment site rental gross margin	829		338				1,167		847		371				1,218
Segment services and other gross margin	18		3				21		47		1				48
Segment selling, general and administrative expenses(b)	21		47				68		31		49				80
Segment operating profit (loss)	826		294				1,120		863		323				1,186
Other selling, general and administrative expenses(b)					$	84	84						$	82	82
Stock-based compensation expense, net					38		38						41		41
Depreciation, amortization and accretion					439		439						431		431
Restructuring charges					11		11						—		—
Interest expense and amortization of deferred financing costs, net					226		226						202		202
Other (income) expenses to reconcile to income (loss) before income taxes(c)					4		4						5		5
Income (loss) before income taxes							$	318							$	425
Capital expenditures	$	35	$	273	$	12	$	320	$	50	$	279	$	12	$	341
Total assets (at period end)	$	21,270	$	16,281	$	680	$	38,231	$	22,185	$	16,091	$	778	$	39,054

(a)Exclusive of depreciation, amortization and accretion shown separately.

(b)Segment costs of operations excludes (1) stock-based compensation expense, net of $7 million and $8 million for the three months ended March 31, 2024 and 2023, respectively and (2) prepaid lease purchase price adjustments of $4 million for each of the three months ended March 31, 2024 and 2023. Segment selling, general and administrative expenses and other selling, general and administrative expenses exclude stock-based compensation expense, net of $31 million and $33 million for the three months ended March 31, 2024 and 2023, respectively.

(c)See condensed consolidated statement of operations and comprehensive income (loss) for further information.

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Supplemental Cash Flow Information

3 Months Ended

Mar. 31, 2024

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

Supplemental Cash Flow Information

The following table is a summary of the Company's supplemental cash flow information for the three months ended March 31, 2024 and 2023:

	Three Months Ended March 31,
	2024		2023
Supplemental disclosure of cash flow information:
Cash payments related to operating lease liabilities(a)	$	142	$	142
Interest paid	282		249
Income taxes paid (refunded)	—		(2)
Supplemental disclosure of non-cash operating, investing and financing activities:
ROU assets recorded in exchange for operating lease liabilities	(97)		30
Increase (decrease) in accounts payable for purchases of property and equipment	(15)		2
Capitalized stock-based compensation	7		6
Purchase of property and equipment under finance leases and installment land purchases	25		21

(a)Excludes the Company's contingent payments pursuant to operating leases, which are recorded as expense in the period such contingencies are resolved.

The reconciliation of cash and cash equivalents and restricted cash and cash equivalents reported within various lines on the condensed consolidated balance sheet to amounts reported in the condensed consolidated statement of cash flows is shown below.

	March 31, 2024		December 31, 2023
Cash and cash equivalents	$	125	$	105
Restricted cash and cash equivalents, current	168		171
Restricted cash and cash equivalents reported within other assets, net	5		5
Cash and cash equivalents and restricted cash and cash equivalents	$	298	$	281

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Restructuring and Related Activities

3 Months Ended

Mar. 31, 2024

Restructuring and Related Activities [Abstract]

Restructuring and Related Activities Disclosure

Restructuring

In July 2023, the Company initiated a restructuring Plan as part of its efforts to reduce costs to better align the Company's operational needs with lower tower activity. The Plan included reducing the Company's total employee headcount by approximately 15%, discontinuing installation services as a Towers product offering while continuing to offer site development services on Company towers, and consolidating office space.

In the first quarter 2024, the Company recorded approximately $11 million of office space consolidation charges in connection with the Plan, inclusive of a $7 million charge related to remaining obligations under facility leases and $4 million of non-cash charges representing accelerated depreciation.

The actions announced in July 2023 associated with the Plan and related charges are expected to be substantially completed and recorded by June 30, 2024, while the payments are expected to be completed for the employee headcount reduction and office space consolidation in 2024 and 2032, respectively. The Company expects to incur an additional approximately $2 million of related charges during 2024, primarily related to the office space consolidation.The following table summarizes the activities related to the restructuring for the three months ended March 31, 2024:

	Employee Headcount Reduction		Office Space Consolidation		Total
Liability as of December 31, 2023	$	16	$	12	$	28
Charges	—		11		11
Payments	(8)		(4)		(12)
Non-cash items	—		(4)		(4)
Liability as of March 31, 2024	$	8	$	15	$	23

As of March 31, 2024, the liability for restructuring charges is included in "Other accrued liabilities" on the consolidated balance sheet, and the corresponding expense is included in "Restructuring charges" on the condensed consolidated statements of operations and comprehensive income.

The Company does not allocate restructuring charges between its operating segments. If such charges were allocated to operating segments, for the three months ended March 31, 2024, $2 million and $3 million of the aforementioned charge would have been allocated to the Company's Towers and Fiber segment, respectively, with the remaining $6 million allocated to Other.

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Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Pay vs Performance Disclosure
Net Income (Loss) Attributable to Parent	$ 311	$ 418

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Insider Trading Arrangements	3 Months Ended
	Mar. 31, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

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Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Recent accounting prounouncements

Recently Adopted Accounting Pronouncements

No accounting pronouncements adopted during the three months ended March 31, 2024 had a material impact on the Company's condensed consolidated financial statements.

Recent Accounting Pronouncements Not Yet Adopted

In November 2023, the FASB issued new guidance that is designed to improve reportable segment disclosure requirements, primarily through enhanced disclosure of significant segment expenses. The new guidance also expands interim segment disclosure requirements and requires disclosure of the position and title of the Company's chief operating decision-maker. The guidance will be effective for the Company's fiscal year ending December 31, 2024 and for interim periods starting in the first quarter of fiscal year 2025 with early adoption permitted. The guidance is required to be applied retrospectively to each prior reporting period presented. The Company is currently evaluating the effect of the guidance, including the impact on its consolidated financial statements and related disclosures.

In December 2023, the FASB issued new guidance that enhances the transparency and decision usefulness of income tax disclosures, primarily through changes to the rate reconciliation and income taxes paid disclosures. The guidance will be effective for the Company's fiscal year ending December 31, 2025, and can be applied prospectively or retrospectively, with early adoption permitted. The Company is currently evaluating the effect of the guidance, including the impact on its consolidated financial statements and related disclosures.

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Revenues (Tables)

3 Months Ended

Mar. 31, 2024

Revenue from Contract with Customer [Abstract]

Lessor, Operating Lease, Payment to be Received, Fiscal Year Maturity

The following table is a summary of the contracted amounts owed to the Company by tenants pursuant to tenant contracts in effect as of March 31, 2024.

	Nine Months Ending December 31,		Years Ending December 31,
	2024		2025		2026		2027		2028		Thereafter		Total
Contracted amounts(a)	$	3,826	$	4,804	$	4,653	$	4,545	$	4,330	$	15,966	$	38,124

(a)Based on the nature of the contract, tenant contracts are accounted for pursuant to relevant lease accounting (ASC 842) or revenue accounting (ASC 606) guidance. Excludes amounts related to services, as those contracts generally have a duration of one year or less.

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Debt and Other Obligations (Tables)

3 Months Ended

Mar. 31, 2024

Debt and Other Obligations [Abstract]

Schedule of Long-Term Debt Instruments

The table below sets forth the Company's debt and other obligations as of March 31, 2024.

	Original Issue Date		Final Maturity Date(a)		Balance as of March 31, 2024			Balance as of December 31, 2023		Stated Interest Rate as of March 31, 2024(a)(b)
Secured Notes, Series 2009-1, Class A-2	July 2009		Aug. 2029		$	38		$	40	9.0	%
Tower Revenue Notes, Series 2015-2	May 2015		May 2045	(c)	699			698		3.7	%
Tower Revenue Notes, Series 2018-2	July 2018		July 2048	(c)	746			746		4.2	%
Finance leases and other obligations	Various	(d)	Various	(d)	287			270		Various		(d)
Total secured debt					1,770			1,754
2016 Revolver	Jan. 2016		July 2027		—		(e)	670		N/A		(f)
2016 Term Loan A	Jan. 2016		July 2027		1,162			1,162		6.4	%	(f)
Commercial Paper Notes	Various	(g)	Various	(g)	1,138		(g)	—		5.9	%
3.200% Senior Notes	Aug. 2017		Sept. 2024		750			749		3.2	%
1.350% Senior Notes	June 2020		July 2025		498			498		1.4	%
4.450% Senior Notes	Feb. 2016		Feb. 2026		898			898		4.5	%
3.700% Senior Notes	May 2016		June 2026		748			748		3.7	%
1.050% Senior Notes	Feb. 2021		July 2026		995			994		1.1	%
4.000% Senior Notes	Feb. 2017		Mar. 2027		498			498		4.0	%
2.900% Senior Notes	Mar. 2022		Mar. 2027		744			744		2.9	%
3.650% Senior Notes	Aug. 2017		Sept. 2027		997			997		3.7	%
5.000% Senior Notes	Jan. 2023		Jan. 2028		992			991		5.0	%
3.800% Senior Notes	Jan. 2018		Feb. 2028		995			995		3.8	%
4.800% Senior Notes	Apr. 2023		Sept. 2028		594			594		4.8	%
4.300% Senior Notes	Feb. 2019		Feb. 2029		595			595		4.3	%
5.600% Senior Notes	Dec. 2023		June 2029		741			740		5.6	%
3.100% Senior Notes	Aug. 2019		Nov. 2029		546			546		3.1	%
3.300% Senior Notes	Apr. 2020		July 2030		741			741		3.3	%
2.250% Senior Notes	June 2020		Jan. 2031		1,092			1,091		2.3	%
2.100% Senior Notes	Feb. 2021		Apr. 2031		991			990		2.1	%
2.500% Senior Notes	June 2021		July 2031		743			743		2.5	%
5.100% Senior Notes	Apr. 2023		May 2033		743			743		5.1	%
5.800% Senior Notes	Dec. 2023		Mar. 2034		742			740		5.8	%
2.900% Senior Notes	Feb. 2021		Apr. 2041		1,235			1,234		2.9	%
4.750% Senior Notes	May 2017		May 2047		344			344		4.8	%
5.200% Senior Notes	Feb. 2019		Feb. 2049		396			396		5.2	%
4.000% Senior Notes	Aug. 2019		Nov. 2049		346			346		4.0	%
4.150% Senior Notes	Apr. 2020		July 2050		490			490		4.2	%
3.250% Senior Notes	June 2020		Jan. 2051		890			890		3.3	%
Total unsecured debt					21,644			21,167
Total debt and other obligations					23,414			22,921
Less: current maturities of debt and other obligations					854			835
Non-current portion of debt and other long-term obligations					$	22,560		$	22,086

(a)See the 2023 Form 10-K, including note 7 to the consolidated financial statements, for additional information regarding the maturity and principal amortization provisions and interest rates relating to the Company's indebtedness.

(b)Represents the weighted-average stated interest rate, as applicable.

(c)If the Tower Revenue Notes, Series 2015-2 and Series 2018-2 (collectively, "Tower Revenue Notes") are not paid in full on or prior to an applicable anticipated repayment date, then Excess Cash Flow (as defined in the indenture governing the terms of such notes) of the issuers of such notes will be used to repay principal of the applicable series and class of the Tower Revenue Notes, and additional interest (of an additional approximately 5% per annum) will accrue on the respective Tower Revenue Notes. As of March 31, 2024, the Tower Revenue Notes, Series 2015-2 and Series 2018-2 have principal amounts of $700 million and $750 million, with anticipated repayment dates in 2025 and 2028, respectively.

(d)The Company's finance leases and other obligations relate to land, fiber, vehicles, and other assets and bear interest rates up to 10% and mature in periods ranging from less than one year to approximately 25 years.

(e)As of March 31, 2024, the undrawn availability under the Company's senior unsecured revolving credit facility ("2016 Revolver") was $7.0 billion.

(f)Both the 2016 Revolver and the senior unsecured term loan A facility ("2016 Term Loan A" and, collectively, "2016 Credit Facility") bear interest, at the Company's option, at either (1) Term SOFR plus (i) a credit spread adjustment of 0.10% per annum and (ii) a credit spread ranging from 0.875% to 1.750% per annum or (2) an alternate base rate plus a credit spread ranging from 0.000% to 0.750% per annum, in each case, with the applicable credit spread based on the Company's senior unsecured debt rating. The Company pays a commitment fee ranging from 0.080% to 0.300%, based on the Company's senior unsecured debt rating, per annum on the undrawn available amount under the 2016 Revolver. See the 2023 Form 10-K, including note 7 to the consolidated financial statements, for information regarding potential adjustments to such percentages.

(g)The maturities of the Commercial Paper Notes, when outstanding, may vary but may not exceed 397 days from the date of issue, but there were no Commercial Paper Notes issued or outstanding during the period that had original maturities greater than three months. The Commercial Paper Notes are issued under customary terms in the commercial paper market and are issued at a discount from par or, alternatively, can be issued at par and bear varying interest rates on a fixed or floating basis. At any point in time, the Company intends to maintain available commitments under its 2016 Revolver in an amount at least equal to the amount of Commercial Paper Notes outstanding. While any outstanding Commercial Paper Notes generally have short-term maturities, the Company classifies the outstanding issuances, when applicable, as long-term based on its ability and intent to refinance the outstanding issuances on a long-term basis.

Schedule of Maturities of Long-term Debt

Scheduled Principal Payments and Final Maturities

The following are the scheduled principal payments and final maturities of the total debt and other long-term obligations of the Company outstanding as of March 31, 2024, which do not consider the principal payments that will commence following the anticipated repayment dates on the Tower Revenue Notes.

	Nine Months Ending December 31,			Years Ending December 31,										Total Cash Obligations		Unamortized Adjustments, Net		Total Debt and Other Obligations Outstanding
	2024			2025		2026		2027		2028		Thereafter
Scheduled principal payments and final maturities	$	1,969	(a)	$	603	$	2,780	$	3,251	$	2,630	$	12,343	$	23,576	$	(162)	$	23,414

(a)Predominately consists of outstanding indebtedness under the CP Program as discussed in footnote (g) of the preceding table.

Components of Interest Expense and Amortization of Deferred Financing Costs, net

Interest Expense and Amortization of Deferred Financing Costs, Net

The components of interest expense and amortization of deferred financing costs, net are as follows:

	Three Months Ended March 31,
	2024		2023
Interest expense on debt obligations	$	223	$	198
Amortization of deferred financing costs and adjustments on long-term debt	8		7
Capitalized interest	(5)		(3)
Total	$	226	$	202

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Fair Value Disclosures (Tables)

3 Months Ended

Mar. 31, 2024

Fair Value Disclosures [Abstract]

Estimated Fair Values and Carrying Amounts of Assets and Liabilities

	Level in Fair Value Hierarchy	March 31, 2024				December 31, 2023
		Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets:
Cash and cash equivalents	1	$	125	$	125	$	105	$	105
Restricted cash and cash equivalents, current and non-current	1	173		173		176		176
Liabilities:
Total debt and other obligations	2	23,414		21,580		22,921		21,201

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Per Share Information (Tables)

3 Months Ended

Mar. 31, 2024

Earnings Per Share [Abstract]

Reconciliation of the Numerators and Denominators of the Basic and Diluted Per Share Computations

	Three Months Ended March 31,
	2024		2023
Net income (loss)	$	311	$	418
Weighted-average number of common shares outstanding (in millions):
Basic weighted-average number of common stock outstanding	434		433
Effect of assumed dilution from potential issuance of common shares relating to restricted stock units	1		1
Diluted weighted-average number of common shares outstanding	435		434
Net income (loss), per common share:
Basic	$	0.72	$	0.97
Diluted	$	0.71	$	0.97
Dividends/distributions declared per share of common stock	$	1.565	$	1.565

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Equity (Tables)

3 Months Ended

Mar. 31, 2024

Equity [Abstract]

Dividends Declared

Declaration and Payment of Dividends

During the three months ended March 31, 2024, the following dividends/distributions were declared or paid:

Equity Type	Declaration Date	Record Date	Payment Date	Dividends Per Share		Aggregate Payment Amount(a)
Common Stock	February 21, 2024	March 15, 2024	March 28, 2024	$	1.565	$	683

(a)Inclusive of dividends accrued for holders of unvested RSUs, which will be paid when and if the RSUs vest.

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Operating Segments Operating Segments (Tables)

3 Months Ended

Mar. 31, 2024

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

	Three Months Ended March 31, 2024								Three Months Ended March 31, 2023
	Towers		Fiber		Other		Total		Towers		Fiber		Other		Total
Segment site rental revenues	$	1,068	$	520			$	1,588	$	1,081	$	543			$	1,624
Segment services and other revenues	46		7				53		146		3				149
Segment revenues	1,114		527				1,641		1,227		546				1,773
Segment site rental costs of operations	239		182				421		234		172				406
Segment services and other costs of operations	28		4				32		99		2				101
Segment costs of operations(a)(b)	267		186				453		333		174				507
Segment site rental gross margin	829		338				1,167		847		371				1,218
Segment services and other gross margin	18		3				21		47		1				48
Segment selling, general and administrative expenses(b)	21		47				68		31		49				80
Segment operating profit (loss)	826		294				1,120		863		323				1,186
Other selling, general and administrative expenses(b)					$	84	84						$	82	82
Stock-based compensation expense, net					38		38						41		41
Depreciation, amortization and accretion					439		439						431		431
Restructuring charges					11		11						—		—
Interest expense and amortization of deferred financing costs, net					226		226						202		202
Other (income) expenses to reconcile to income (loss) before income taxes(c)					4		4						5		5
Income (loss) before income taxes							$	318							$	425
Capital expenditures	$	35	$	273	$	12	$	320	$	50	$	279	$	12	$	341
Total assets (at period end)	$	21,270	$	16,281	$	680	$	38,231	$	22,185	$	16,091	$	778	$	39,054

(a)Exclusive of depreciation, amortization and accretion shown separately.

(b)Segment costs of operations excludes (1) stock-based compensation expense, net of $7 million and $8 million for the three months ended March 31, 2024 and 2023, respectively and (2) prepaid lease purchase price adjustments of $4 million for each of the three months ended March 31, 2024 and 2023. Segment selling, general and administrative expenses and other selling, general and administrative expenses exclude stock-based compensation expense, net of $31 million and $33 million for the three months ended March 31, 2024 and 2023, respectively.

(c)See condensed consolidated statement of operations and comprehensive income (loss) for further information.

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Supplemental Cash Flow Information (Tables)

3 Months Ended

Mar. 31, 2024

Supplemental Cash Flow Elements [Abstract]

Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]

The following table is a summary of the Company's supplemental cash flow information for the three months ended March 31, 2024 and 2023:

	Three Months Ended March 31,
	2024		2023
Supplemental disclosure of cash flow information:
Cash payments related to operating lease liabilities(a)	$	142	$	142
Interest paid	282		249
Income taxes paid (refunded)	—		(2)
Supplemental disclosure of non-cash operating, investing and financing activities:
ROU assets recorded in exchange for operating lease liabilities	(97)		30
Increase (decrease) in accounts payable for purchases of property and equipment	(15)		2
Capitalized stock-based compensation	7		6
Purchase of property and equipment under finance leases and installment land purchases	25		21

(a)Excludes the Company's contingent payments pursuant to operating leases, which are recorded as expense in the period such contingencies are resolved.

Schedule of Cash, Cash Equivalents and Restricted Cash and Cash Equivalents

The reconciliation of cash and cash equivalents and restricted cash and cash equivalents reported within various lines on the condensed consolidated balance sheet to amounts reported in the condensed consolidated statement of cash flows is shown below.

	March 31, 2024		December 31, 2023
Cash and cash equivalents	$	125	$	105
Restricted cash and cash equivalents, current	168		171
Restricted cash and cash equivalents reported within other assets, net	5		5
Cash and cash equivalents and restricted cash and cash equivalents	$	298	$	281

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Restructuring and Related Activities (Tables)

3 Months Ended

Mar. 31, 2024

Restructuring and Related Activities [Abstract]

Restructuring and Related Costs

The following table summarizes the activities related to the restructuring for the three months ended March 31, 2024:

	Employee Headcount Reduction		Office Space Consolidation		Total
Liability as of December 31, 2023	$	16	$	12	$	28
Charges	—		11		11
Payments	(8)		(4)		(12)
Non-cash items	—		(4)		(4)
Liability as of March 31, 2024	$	8	$	15	$	23

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General Business (Details)	Mar. 31, 2024
Subject to Capital Lease with TMO or AT&T [Member]
Purchase Option, Percentage of Towers	53.00%

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Revenues (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Revenue, Remaining Performance Obligation, Amount		$ 2,000		$ 2,100	$ 2,300
Revenue Recognized on Deferred Revenues		139	$ 166
Contracted Amounts Receivable from Customers, remainder of year	[1]	3,826
Contracted Amounts Receivable from Customers, in Two Years	[1]	4,804
Contracted Amounts Receivable from Customers, in Three Years	[1]	4,653
Contracted Amounts Receivable from Customers, in Four Years	[1]	4,545
Contracted Amounts Receivable from Customers, in Five Years	[1]	4,330
Contracted Amounts Receivable from Customers, Thereafter	[1]	15,966
Lessor, Operating Lease, Payments to be Received	[1]	38,124
Site rental revenue - remaining rental obligation		$ 3	$ 48
Minimum [Member]
Revenue Recognition Non-cancelable Lease Term for Wireless Tenants		five
Revenue Recognition for Fiber Solutions Tenants		one
Revenue, Performance Obligation, Description of Payment Terms		45
Maximum [Member]
Revenue Recognition Non-cancelable Lease Term for Wireless Tenants		15
Revenue Recognition for Fiber Solutions Tenants		20
Revenue, Performance Obligation, Description of Payment Terms		90

[1] Based on the nature of the contract, tenant contracts are accounted for pursuant to relevant lease accounting (ASC 842) or revenue accounting (ASC 606) guidance. Excludes amounts related to services, as those contracts generally have a duration of one year or less.

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Debt and Other Obligations (Indebtedness) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2024		Dec. 31, 2023
Debt Instrument [Line Items]
Debt and Finance Lease Obligations		$ 23,414		$ 22,921
Less: current maturities of debt and other obligations		854		835
Non-current portion of long-term debt and other long-term obligations		22,560		22,086
2015 Tower Revenue Notes 3.663% due 2045 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		700
2018 Tower Revenue Notes 4.241% due 2048 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 750
Fixed Rate Securitized Debt July 2018 Tower Revenue Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Increase (Decrease)		5.00%
Finance Lease Obligations and Other [Member] | Securitized Debt [Member]
Debt Instrument [Line Items]
Debt and Finance Lease Obligations	[1]	$ 287		270
High Yield Bonds [Member] | August 2017 Senior Unsecured 3.200% Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	3.20%
Debt and Finance Lease Obligations		$ 750		749
High Yield Bonds [Member] | June 2020 Senior Unsecured 1.350% Notes [Domain]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	1.40%
Debt and Finance Lease Obligations		$ 498		498
High Yield Bonds [Member] | Senior Unsecured 2016 Notes 4.450% [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	4.50%
Debt and Finance Lease Obligations		$ 898		898
High Yield Bonds [Member] | Senior Unsecured 2016 Notes 3.7% [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	3.70%
Debt and Finance Lease Obligations		$ 748		748
High Yield Bonds [Member] | February 2021 Senior Unsecured 1.050% Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	1.10%
Debt and Finance Lease Obligations		$ 995		994
High Yield Bonds [Member] | 4.000% Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	4.00%
Debt and Finance Lease Obligations		$ 498		498
High Yield Bonds [Member] | 2.900% Senior Unsecured Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	2.90%
Debt and Finance Lease Obligations		$ 744		744
High Yield Bonds [Member] | August 2017 Senior Unsecured 3.650% Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	3.70%
Debt and Finance Lease Obligations		$ 997		997
High Yield Bonds [Member] | January 2023 Senior Unsecured 5.000% Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	5.00%
Debt and Finance Lease Obligations		$ 992		991
High Yield Bonds [Member] | 3.800% Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	3.80%
Debt and Finance Lease Obligations		$ 995		995
High Yield Bonds [Member] | 4.800% Senior Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	4.80%
Debt and Finance Lease Obligations		$ 594		594
High Yield Bonds [Member] | February 2019 Senior Unsecured 4.300% Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	4.30%
Debt and Finance Lease Obligations		$ 595		595
High Yield Bonds [Member] | December 2023 Senior Unsecured 5.600% Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	5.60%
Debt and Finance Lease Obligations		$ 741		740
High Yield Bonds [Member] | August 2019 Senior Unsecured 3.100% Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	3.10%
Debt and Finance Lease Obligations		$ 546		546
High Yield Bonds [Member] | April 2020 Senior Unsecured 3.300% Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	3.30%
Debt and Finance Lease Obligations		$ 741		741
High Yield Bonds [Member] | June 2020 Senior Unsecured 2.250% Notes [Domain]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	2.30%
Debt and Finance Lease Obligations		$ 1,092		1,091
High Yield Bonds [Member] | February 2021 Senior Unsecured 2.100% Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	2.10%
Debt and Finance Lease Obligations		$ 991		990
High Yield Bonds [Member] | June 2021 Senior Unsecured 2.500% Notes [Domain]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	2.50%
Debt and Finance Lease Obligations		$ 743		743
High Yield Bonds [Member] | 5.100% Senior Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	5.10%
Debt and Finance Lease Obligations		$ 743		743
High Yield Bonds [Member] | December 2023 Senior Unsecured 5.800% Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	5.80%
Debt and Finance Lease Obligations		$ 742		740
High Yield Bonds [Member] | February 2021 Senior Unsecured 2.900% Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	2.90%
Debt and Finance Lease Obligations		$ 1,235		1,234
High Yield Bonds [Member] | 4.750% Senior Unsecured Notes [Member] [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	4.80%
Debt and Finance Lease Obligations		$ 344		344
High Yield Bonds [Member] | February 2019 Senior Unsecured 5.200% Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	5.20%
Debt and Finance Lease Obligations		$ 396		396
High Yield Bonds [Member] | August 2019 Senior Unsecured 4.000% Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	4.00%
Debt and Finance Lease Obligations		$ 346		346
High Yield Bonds [Member] | April 2020 Senior Unsecured 4.150% Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	4.20%
Debt and Finance Lease Obligations		$ 490		490
High Yield Bonds [Member] | June 2020 Senior Unsecured 3.250% Notes [Domain]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	3.30%
Debt and Finance Lease Obligations		$ 890		890
Unsecured Debt [Member]
Debt Instrument [Line Items]
Debt and Finance Lease Obligations		21,644		21,167
Securitized Debt [Member]
Debt Instrument [Line Items]
Debt and Finance Lease Obligations		$ 1,770		1,754
Securitized Debt [Member] | Fixed Rate Debt 2009 Securitized Notes A-2 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	9.00%
Debt and Finance Lease Obligations		$ 38		40
Securitized Debt [Member] | 2015 Tower Revenue Notes 3.663% due 2045 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	3.70%
Debt and Finance Lease Obligations	[4]	$ 699		698
Securitized Debt [Member] | 2018 Tower Revenue Notes 4.241% due 2048 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	4.20%
Debt and Finance Lease Obligations	[4]	$ 746		746
Bank Debt [Member] | 2016 Term Loan A [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3],[5]	6.40%
Debt and Finance Lease Obligations		$ 1,162		1,162
Bank Debt [Member] | Commercial Paper [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[2],[3]	5.90%
Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		0.75%
Maximum [Member] | Finance Lease Obligations and Other [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		10.00%
Maximum [Member] | Finance Lease Obligations and Other [Member]
Debt Instrument [Line Items]
Debt Instrument Maturity Date Range		25 years
Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		0.00%
Minimum [Member] | Finance Lease Obligations and Other [Member]
Debt Instrument [Line Items]
Debt Instrument Maturity Date Range		one year
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		1.75%
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		0.875%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Unused Borrowing Capacity, Amount		$ 7,000
Debt and Finance Lease Obligations		$ 0	[6]	670
Revolving Credit Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage		0.30%
Revolving Credit Facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage		0.08%
Commercial Paper [Member] | Bank Debt [Member]
Debt Instrument [Line Items]
Debt and Finance Lease Obligations	[7]	$ 1,138		$ 0
Debt Instrument, Maturity Date, Description		397 days
Commercial Paper [Member] | Maximum [Member] | Bank Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date, Description		three months
Term SOFR Adjustment
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		0.10%

[1] The Company's finance leases and other obligations relate to land, fiber, vehicles, and other assets and bear interest rates up to 10% and mature in periods ranging from less than one year to approximately 25 years.

[2] Represents the weighted-average stated interest rate, as applicable.

[3] See the 2023 Form 10-K, including note 7 to the consolidated financial statements, for additional information regarding the maturity and principal amortization provisions and interest rates relating to the Company's indebtedness.

[4] If the Tower Revenue Notes, Series 2015-2 and Series 2018-2 (collectively, "Tower Revenue Notes") are not paid in full on or prior to an applicable anticipated repayment date, then Excess Cash Flow (as defined in the indenture governing the terms of such notes) of the issuers of such notes will be used to repay principal of the applicable series and class of the Tower Revenue Notes, and additional interest (of an additional approximately 5% per annum) will accrue on the respective Tower Revenue Notes. As of March 31, 2024, the Tower Revenue Notes, Series 2015-2 and Series 2018-2 have principal amounts of $700 million and $750 million, with anticipated repayment dates in 2025 and 2028, respectively.

[5] Both the 2016 Revolver and the senior unsecured term loan A facility ("2016 Term Loan A" and, collectively, "2016 Credit Facility") bear interest, at the Company's option, at either (1) Term SOFR plus (i) a credit spread adjustment of 0.10% per annum and (ii) a credit spread ranging from 0.875% to 1.750% per annum or (2) an alternate base rate plus a credit spread ranging from 0.000% to 0.750% per annum, in each case, with the applicable credit spread based on the Company's senior unsecured debt rating. The Company pays a commitment fee ranging from 0.080% to 0.300%, based on the Company's senior unsecured debt rating, per annum on the undrawn available amount under the 2016 Revolver. See the 2023 Form 10-K, including note 7 to the consolidated financial statements, for information regarding potential adjustments to such percentages.

[6] As of March 31, 2024, the undrawn availability under the Company's senior unsecured revolving credit facility ("2016 Revolver") was $7.0 billion.

[7] The maturities of the Commercial Paper Notes, when outstanding, may vary but may not exceed 397 days from the date of issue, but there were no Commercial Paper Notes issued or outstanding during the period that had original maturities greater than three months. The Commercial Paper Notes are issued under customary terms in the commercial paper market and are issued at a discount from par or, alternatively, can be issued at par and bear varying interest rates on a fixed or floating basis. At any point in time, the Company intends to maintain available commitments under its 2016 Revolver in an amount at least equal to the amount of Commercial Paper Notes outstanding. While any outstanding Commercial Paper Notes generally have short-term maturities, the Company classifies the outstanding issuances, when applicable, as long-term based on its ability and intent to refinance the outstanding issuances on a long-term basis.

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Debt and Other Obligations (Components of Interest Expense and Amortization of Deferred Financing Costs) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Debt and Other Obligations [Abstract]
Interest Expense, Debt, Excluding Amortization	$ 223	$ 198
Amortization of deferred financing costs and adjustments on long-term debt, net	8	7
Capitalized interest	(5)	(3)
Interest expense and amortization of deferred financing costs, net	$ 226	$ 202

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Debt and Other Obligations Contractual Maturities (Details) - USD ($) $ in Millions		Mar. 31, 2024	Dec. 31, 2023
Contractual Obligation, Fiscal Year Maturity Schedule [Abstract]
Long-Term Debt, Maturity, remainder of year	[1]	$ 1,969
Long-Term Debt, Maturity, Year One		603
Long-Term Debt, Maturity, Year Two		2,780
Long-Term Debt, Maturity, Year Three		3,251
Long-Term Debt, Maturity, Year Four		2,630
Long-Term Debt, Maturity, after Year Five		12,343
Total Cash Obligations		23,576
Unamortized Adjustments, Net		(162)
Debt and Finance Lease Obligations		$ 23,414	$ 22,921

[1] Predominately consists of outstanding indebtedness under the CP Program as discussed in footnote (g) of the preceding table.

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Fair Value Disclosures (Estimated Fair Values and Carrying Amounts of Assets and Liabilities) (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Fair Value Disclosures [Abstract]
Cash and cash equivalents	$ 125	$ 105
Cash and cash equivalents, fair value	125	105
Restricted Cash and Cash Equivalents	173	176
Restricted Cash and Cash Equivalents Fair Value Disclosure	173	176
Long-term debt and other obligations, carrying amount	23,414	22,921
Long-term debt and other obligations, fair value	$ 21,580	$ 21,201

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Per Share Information (Reconciliation of the Numerators and Denominators of the Basic and Diluted Per Share Computations) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share [Abstract]
Net Income (Loss) Attributable to Parent	$ 311	$ 418
Basic weighted-average number of common stock outstanding	434	433
Effect of assumed dilution from potential issuance of common shares relating to restricted stock units	1	1
Diluted weighted-average number of common shares outstanding	435	434
Earnings Per Share, Basic	$ 0.72	$ 0.97
Earnings Per Share, Diluted	0.71	0.97
Dividends/distributions declared per share of common stock (in dollars per share)	$ 1.565	$ 1.565

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Per Share Information Stock Issued During Period, Restricted Stock Award (Details) shares in Millions	3 Months Ended
	Mar. 31, 2024 shares
Restricted stock units granted [Abstract]
Restricted stock award granted	1

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Commitments and Contingencies Commitment and Contingencies (Details)	Mar. 31, 2024
Subject to Capital Lease with TMO or AT&T [Member]
Other Commitments [Line Items]
Purchase Option, Percentage of Towers	53.00%

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Equity (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Common Stock, Dividends, Per Share, Cash Paid		$ 1.565
Dividends, Common Stock, Cash	[1]	$ 683
Common stock repurchased during period, shares		0.3
Purchases of common stock		$ (27)	$ (28)
Availability Under ATM		750
At the Market Stock Offering Program, aggregate value of common stock				$ 750
At the Market Stock Offering Program, terminated 2021 Program remaining unsold		$ 750
Common Stock [Member]
Dividends Payable, Date Declared		Feb. 21, 2024
Dividends Payable, Date of Record		Mar. 15, 2024
Dividends Payable, Date to be Paid		Mar. 28, 2024

[1] Inclusive of dividends accrued for holders of unvested RSUs, which will be paid when and if the RSUs vest.

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Operating Segments Operating Segments Table (Details) $ in Millions		3 Months Ended
		Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)
Segment Reporting Information [Line Items]
Tower Count		40,000
Fiber Miles		90,000
Small Cells on Air or Under Contract		115,000
Amortization of prepaid lease purchase price adjustments		$ 4	$ 4
Site Rental		1,588	1,624
Services and other		53	149
Segment Revenues		1,641	1,773
Segment site rental cost of operations	[1]	430	415
Services and other	[1]	34	104
Segment selling, general and administrative expenses		183	195
Stock-based compensation expense, net		38	41
Depreciation, Amortization and Accretion, Net		439	431
Restructuring Charges		11	0
Interest expense and amortization of deferred financing costs, net		226	202
Capital expenditures		320	341
Total Assets		38,231		$ 38,527
Restricted Cash and Cash Equivalents, Noncurrent		5		$ 5
Segments [Domain]
Segment Reporting Information [Line Items]
Site Rental		1,588	1,624
Services and other		53	149
Segment Revenues		1,641	1,773
Segment site rental cost of operations		421	406
Services and other		32	101
Segment cost of operations	[2],[3]	453	507
Segment site rental gross margin		1,167	1,218
Segment services gross margin		21	48
Segment selling, general and administrative expenses	[2]	84	82
Segment General and Administrative Expenses [Line Items]	[2]	68	80
Segment Operating Profit		1,120	1,186
Stock-based compensation expense, net		38	41
Depreciation, Amortization and Accretion, Net		439	431
Restructuring Charges		11	0
Interest expense and amortization of deferred financing costs, net		226	202
Other expenses to reconcile to income (loss) from continuing operations before income taxes	[4]	4	5
Income (loss) before income taxes		318	425
Capital expenditures		320	341
Total Assets		38,231	39,054
Segment cost of operations share-based compensation [Member]
Segment Reporting Information [Line Items]
Stock-based compensation expense, net		7	8
Towers [Member]
Segment Reporting Information [Line Items]
Site Rental		1,068	1,081
Services and other		46	146
Segment Revenues		1,114	1,227
Segment site rental cost of operations		239	234
Services and other		28	99
Segment cost of operations	[2],[3]	267	333
Segment site rental gross margin		829	847
Segment services gross margin		18	47
Segment selling, general and administrative expenses	[2]	21	31
Segment Operating Profit		826	863
Restructuring Charges		2
Capital expenditures		35	50
Total Assets		21,270	22,185
Fiber [Member]
Segment Reporting Information [Line Items]
Site Rental		520	543
Services and other		7	3
Segment Revenues		527	546
Segment site rental cost of operations		182	172
Services and other		4	2
Segment cost of operations	[2],[3]	186	174
Segment site rental gross margin		338	371
Segment services gross margin		3	1
Segment selling, general and administrative expenses	[2]	47	49
Segment Operating Profit		294	323
Restructuring Charges		3
Capital expenditures		273	279
Total Assets		16,281	16,091
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Segment selling, general and administrative expenses	[2]	84	82
Stock-based compensation expense, net		38	41
Depreciation, Amortization and Accretion, Net		439	431
Restructuring Charges		11	0
Interest expense and amortization of deferred financing costs, net		226	202
Other expenses to reconcile to income (loss) from continuing operations before income taxes	[4]	4	5
Capital expenditures		12	12
Total Assets		680	778
Segment G&A share-based compensation [Member]
Segment Reporting Information [Line Items]
Stock-based compensation expense, net		$ 31	$ 33

[1] Exclusive of depreciation, amortization and accretion shown separately.

[2] Segment costs of operations excludes (1) stock-based compensation expense, net of $7 million and $8 million for the three months ended March 31, 2024 and 2023, respectively and (2) prepaid lease purchase price adjustments of $4 million for each of the three months ended March 31, 2024 and 2023. Segment selling, general and administrative expenses and other selling, general and administrative expenses exclude stock-based compensation expense, net of $31 million and $33 million for the three months ended March 31, 2024 and 2023, respectively.

[3] Exclusive of depreciation, amortization and accretion shown separately.

[4] See condensed consolidated statement of operations and comprehensive income (loss) for further information.

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Supplemental Cash Flow Information (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Supplemental Cash Flow Elements [Abstract]
Cash payments related to operating lease liabilities	[1]	$ 142	$ 142
Interest Paid		282	249
Income taxes paid (refunded)		0	(2)
ROU assets recorded in exchange for operating lease liabilities		(97)	30
Increase (decrease) in accounts payable for purchases of property and equipment		(15)	2
Share-Based Payment Arrangement, Amount Capitalized		7	6
Purchase of property and equipment under capital leases and installment purchases		25	21
Cash and cash equivalents		125		$ 105
Restricted cash and cash equivalents, current		168		171
Cash, Cash Equivalents, Restricted Cash and Cash Equivalents		$ 298	$ 388	$ 281	$ 327

[1] Excludes the Company's contingent payments pursuant to operating leases, which are recorded as expense in the period such contingencies are resolved.

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Restructuring and Related Activities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Jun. 30, 2024	Dec. 31, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 11	$ 0
Towers [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	2
Fiber [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	3
Other Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	6
Forecast
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Remaining			$ 2
The Plan
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	11
Payments for Restructuring	(12)
Restructuring Reserve, Settled without Cash	(4)
Restructuring Reserve	23			$ 28
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0
Payments for Restructuring	(8)
Restructuring Reserve, Settled without Cash	0
Restructuring Reserve	8			16
Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	11
Payments for Restructuring	(4)
Restructuring Reserve, Settled without Cash	(4)
Restructuring Reserve	15			$ 12
Accelerated depreciation and asset write downs
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Settled without Cash	(4)
Remaining obligations under facility leases
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 7