10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One):

☒ Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934. For the quarterly period ended June 30, 2024.

☐ Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934.

Commission File Number: 001-14195

AMERICAN TOWER CORPORATION

(Exact name of registrant as specified in its charter)

Delaware	65-0723837
(State or other jurisdiction of Incorporation or Organization)	(I.R.S. Employer Identification No.)

116 Huntington Avenue

Boston, Massachusetts 02116

(Address of principal executive offices)

Telephone Number (617) 375-7500

(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 exchange on which registered
Common Stock, $0.01 par value	AMT	New York Stock Exchange
1.375% Senior Notes due 2025	AMT 25A	New York Stock Exchange
1.950% Senior Notes due 2026	AMT 26B	New York Stock Exchange
0.450% Senior Notes due 2027	AMT 27C	New York Stock Exchange
0.400% Senior Notes due 2027	AMT 27D	New York Stock Exchange
4.125% Senior Notes due 2027	AMT 27F	New York Stock Exchange
0.500% Senior Notes due 2028	AMT 28A	New York Stock Exchange
0.875% Senior Notes due 2029	AMT 29B	New York Stock Exchange
0.950% Senior Notes due 2030	AMT 30C	New York Stock Exchange
3.900% Senior Notes due 2030	AMT 30D	New York Stock Exchange
4.625% Senior Notes due 2031	AMT 31B	New York Stock Exchange
1.000% Senior Notes due 2032	AMT 32	New York Stock Exchange
1.250% Senior Notes due 2033	AMT 33	New York Stock Exchange
4.100% Senior Notes due 2034	AMT 34A	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, 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  ☒

As of July 23, 2024, there were 467,081,657 shares of common stock outstanding.

AMERICAN TOWER CORPORATION

TABLE OF CONTENTS

QUARTERLY REPORT ON FORM 10-Q

FOR THE QUARTER ENDED JUNE 30, 2024

		Page Nos.
PART I. FINANCIAL INFORMATION
Item 1.	Unaudited Consolidated and Condensed Consolidated Financial Statements		1
	Consolidated Balance Sheets as of June 30, 2024 and December 31, 2023		1
	Consolidated Statements of Operations for the three and six months ended June 30, 2024 and 2023		2
	Consolidated Statements of Comprehensive Income for the three and six months ended June 30, 2024 and 2023		3
	Consolidated Statements of Cash Flows for the six months ended June 30, 2024 and 2023		4
	Consolidated Statements of Equity for the three and six months ended June 30, 2024 and 2023		5
	Notes to Consolidated and Condensed Consolidated Financial Statements		6
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations		30
Item 3.	Quantitative and Qualitative Disclosures about Market Risk		56
Item 4.	Controls and Procedures		56
PART II. OTHER INFORMATION
Item 1.	Legal Proceedings		57
Item 1A.	Risk Factors		57
Item 5.	Other Information		57
Item 6.	Exhibits		58
Signatures			60

PART I. FINANCIAL INFORMATION

ITEM 1. UNAUDITED CONSOLIDATED AND CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(in millions, except share count and per share data)

	June 30, 2024		December 31, 2023
ASSETS
CURRENT ASSETS:
Cash and cash equivalents	$	2,492.1	$	1,973.3
Restricted cash	126.5		120.1
Accounts receivable, net	712.3		669.7
Prepaid and other current assets	783.2		946.9
Total current assets	4,114.1		3,710.0
PROPERTY AND EQUIPMENT, net	19,927.7		19,788.8
GOODWILL	12,483.1		12,639.0
OTHER INTANGIBLE ASSETS, net	15,759.1		16,520.7
DEFERRED TAX ASSET	139.2		179.1
DEFERRED RENT ASSET	3,649.5		3,521.8
RIGHT-OF-USE ASSET	9,012.1		8,878.8
NOTES RECEIVABLE AND OTHER NON-CURRENT ASSETS	753.0		789.4
TOTAL	$	65,837.8	$	66,027.6
LIABILITIES
CURRENT LIABILITIES:
Accounts payable	$	206.0	$	258.7
Accrued expenses	1,166.2		1,280.6
Distributions payable	778.1		906.2
Accrued interest	314.1		387.0
Current portion of operating lease liability	703.4		794.6
Current portion of long-term obligations	3,329.2		3,187.5
Unearned revenue	391.7		434.7
Total current liabilities	6,888.7		7,249.3
LONG-TERM OBLIGATIONS	35,639.2		35,734.0
OPERATING LEASE LIABILITY	7,717.7		7,438.7
ASSET RETIREMENT OBLIGATIONS	2,562.3		2,158.2
DEFERRED TAX LIABILITY	1,399.3		1,361.4
OTHER NON-CURRENT LIABILITIES	1,207.1		1,220.6
Total liabilities	55,414.3		55,162.2
COMMITMENTS AND CONTINGENCIES
EQUITY (shares in thousands):
Common stock: $0.01 par value; 1,000,000 shares authorized; 478,081 and 477,300 shares issued; and 467,077 and 466,296 shares outstanding, respectively	4.8		4.8
Additional paid-in capital	14,955.0		14,872.9
Distributions in excess of earnings	(3,340.8)		(3,638.8)
Accumulated other comprehensive loss	(6,461.8)		(5,739.5)
Treasury stock (11,004 shares at cost)	(1,301.2)		(1,301.2)
Total American Tower Corporation equity	3,856.0		4,198.2
Noncontrolling interests	6,567.5		6,667.2
Total equity	10,423.5		10,865.4
TOTAL	$	65,837.8	$	66,027.6

See accompanying notes to unaudited consolidated and condensed consolidated financial statements.

1

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS

(in millions, except share and per share data)

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
REVENUES:
Property	$	2,852.9	$	2,728.6	$	5,656.8	$	5,443.1
Services	47.4		43.1		77.6		95.8
Total operating revenues	2,900.3		2,771.7		5,734.4		5,538.9
OPERATING EXPENSES:
Costs of operations (exclusive of items shown separately below):
Property	799.9		810.1		1,574.3		1,597.1
Services	22.0		17.2		35.9		36.3
Depreciation, amortization and accretion	561.7		764.6		1,111.1		1,558.7
Selling, general, administrative and development expense	234.3		244.4		491.3		508.3
Other operating (income) expense	(1.9)		61.7		0.9		189.2
Total operating expenses	1,616.0		1,898.0		3,213.5		3,889.6
OPERATING INCOME	1,284.3		873.7		2,520.9		1,649.3
OTHER INCOME (EXPENSE):
Interest income	43.7		30.6		91.7		61.4
Interest expense	(365.4)		(348.1)		(732.1)		(688.3)
Loss on retirement of long-term obligations	—		(0.3)		—		(0.3)
Other income (expense) (including foreign currency (losses) gains of $(21.7), $(107.6), $105.9 and $(191.7) respectively)	65.8		(81.2)		178.8		(179.0)
Total other expense	(255.9)		(399.0)		(461.6)		(806.2)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	1,028.4		474.7		2,059.3		843.1
Income tax provision	(120.0)		(13.2)		(229.2)		(66.6)
NET INCOME	908.4		461.5		1,830.1		776.5
Net (income) loss attributable to noncontrolling interests	(8.1)		14.2		(12.4)		35.0
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS	$	900.3	$	475.7	$	1,817.7	$	811.5
NET INCOME PER COMMON SHARE AMOUNTS:
Basic net income attributable to American Tower Corporation common stockholders	$	1.93	$	1.02	$	3.89	$	1.74
Diluted net income attributable to American Tower Corporation common stockholders	$	1.92	$	1.02	$	3.89	$	1.74
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING (in thousands):
BASIC	467,038		466,087		466,778		465,915
DILUTED	467,781		466,979		467,793		466,939

See accompanying notes to unaudited consolidated and condensed consolidated financial statements.

2

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(in millions)

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Net income	$	908.4	$	461.5	$	1,830.1	$	776.5
Other comprehensive (loss) income:
Foreign currency translation adjustments, net of tax (benefit) expense of $(0.1), $0.2, $(0.3), and $0.2, respectively	(410.8)		(13.6)		(842.0)		218.5
Other comprehensive (loss) income	(410.8)		(13.6)		(842.0)		218.5
Comprehensive income	497.6		447.9		988.1		995.0
Comprehensive loss (income) attributable to noncontrolling interests	18.9		(6.7)		107.3		(25.8)
Comprehensive income attributable to American Tower Corporation stockholders	$	516.5	$	441.2	$	1,095.4	$	969.2

See accompanying notes to unaudited consolidated and condensed consolidated financial statements.

3

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(in millions)

	Six Months Ended June 30,
	2024		2023
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$	1,830.1	$	776.5
Adjustments to reconcile net income to cash provided by operating activities
Depreciation, amortization and accretion	1,111.1		1,558.7
Stock-based compensation expense	111.2		114.9
Loss on early retirement of long-term obligations	—		0.3
Other non-cash items reflected in statements of operations	(34.5)		366.0
Increase in net deferred rent balances	(152.7)		(232.8)
Right-of-use asset and Operating lease liability, net	31.3		(62.7)
Changes in unearned revenue	(32.3)		46.5
Increase in assets	(119.2)		(238.1)
Decrease in liabilities	(122.9)		(49.4)
Cash provided by operating activities	2,622.1		2,279.9
CASH FLOWS FROM INVESTING ACTIVITIES
Payments for purchase of property and equipment and construction activities	(721.9)		(882.8)
Payments for acquisitions, net of cash acquired	(55.0)		(91.2)
Proceeds from sale of short-term investments and other non-current assets	251.5		6.9
Deposits and other	0.1		250.6
Cash used for investing activities	(525.3)		(716.5)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from short-term borrowings, net	8.7		146.2
Borrowings under credit facilities	5,097.9		4,780.0
Proceeds from issuance of senior notes, net	2,374.1		4,182.3
Proceeds from issuance of securities in securitization transaction	—		1,300.0
Repayments of notes payable, credit facilities, senior notes, secured debt, term loans and finance leases	(7,189.7)		(10,409.6)
Distributions to noncontrolling interest holders	(189.2)		(22.7)
Contributions from noncontrolling interest holders	102.5		1.9
Proceeds from stock options and employee stock purchase plan	23.7		10.3
Distributions paid on common stock	(1,559.2)		(1,461.3)
Deferred financing costs and other financing activities	(86.9)		(100.9)
Cash used for financing activities	(1,418.1)		(1,573.8)
Net effect of changes in foreign currency exchange rates on cash and cash equivalents, and restricted cash	(153.5)		19.1
NET INCREASE IN CASH AND CASH EQUIVALENTS, AND RESTRICTED CASH	525.2		8.7
CASH AND CASH EQUIVALENTS, AND RESTRICTED CASH, BEGINNING OF PERIOD	2,093.4		2,140.7
CASH AND CASH EQUIVALENTS, AND RESTRICTED CASH, END OF PERIOD	$	2,618.6	$	2,149.4
CASH PAID FOR INCOME TAXES (NET OF REFUNDS OF $9.2 AND $21.9, RESPECTIVELY)	$	179.2	$	131.1
CASH PAID FOR INTEREST	$	803.1	$	681.4
NON-CASH INVESTING AND FINANCING ACTIVITIES:
Purchases of property and equipment under finance leases and perpetual easements	$	8.3	$	16.2
Decrease in accounts payable and accrued expenses for purchases of property and equipment and construction activities	$	(56.4)	$	(65.1)
Distributions to noncontrolling interest holders	$	(49.9)	$	—
Contributions from noncontrolling interest holders	$	49.9	$	—
Contribution to equity method investment	$	14.6	$	—

See accompanying notes to unaudited consolidated and condensed consolidated financial statements.

4

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF EQUITY

(in millions, share counts in thousands)

	Common Stock			Treasury Stock			Additional Paid-in Capital		Accumulated Other Comprehensive Loss		Distributions in Excess of Earnings		Noncontrolling Interests		Total Equity
Three Months Ended June 30, 2023 and 2024	Issued Shares	Amount		Shares	Amount
BALANCE, APRIL 1, 2023	477,042	$	4.8	(11,004)	$	(1,301.2)	$	14,725.6	$	(5,526.1)	$	(2,496.5)	$	6,843.7	$	12,250.3
Stock-based compensation related activity	44	0.0		—	—		45.4		—		—		—		45.4
Issuance of common stock-stock purchase plan	52	0.0		—	—		8.2		—		—		—		8.2
Foreign currency translation adjustment, net of tax	—	—		—	—		—		(34.5)		—		20.9		(13.6)
Contributions from noncontrolling interest holders	—	—		—	—		—		—		—		10.5		10.5
Distributions to noncontrolling interest holders	—	—		—	—		—		—		—		(20.1)		(20.1)
Common stock distributions declared	—	—		—	—		—		—		(735.0)		—		(735.0)
Net income (loss)	—	—		—	—		—		—		475.7		(14.2)		461.5
BALANCE, JUNE 30, 2023	477,138	$	4.8	(11,004)	$	(1,301.2)	$	14,779.2	$	(5,560.6)	$	(2,755.8)	$	6,840.8	$	12,007.2
BALANCE, APRIL 1, 2024	477,968	$	4.8	(11,004)	$	(1,301.2)	$	14,903.4	$	(6,078.0)	$	(3,481.2)	$	6,613.9	$	10,661.7
Stock-based compensation related activity	61	0.0		—	—		42.9		—		—		—		42.9
Issuance of common stock-stock purchase plan	52	0.0		—	—		8.7		—		—		—		8.7
Foreign currency translation adjustment, net of tax	—	—		—	—		—		(383.8)		—		(27.0)		(410.8)
Contributions from noncontrolling interest holders	—	—		—	—		—		—		—		13.5		13.5
Distributions to noncontrolling interest holders	—	—		—	—		—		—		—		(41.0)		(41.0)
Common stock distributions declared	—	—		—	—		—		—		(759.9)		—		(759.9)
Net income	—	—		—	—		—		—		900.3		8.1		908.4
BALANCE, JUNE 30, 2024	478,081	$	4.8	(11,004)	$	(1,301.2)	$	14,955.0	$	(6,461.8)	$	(3,340.8)	$	6,567.5	$	10,423.5
	Common Stock			Treasury Stock			Additional Paid-in Capital		Accumulated Other Comprehensive Loss		Distributions in Excess of Earnings		Noncontrolling Interests		Total Equity
Six Months Ended June 30, 2023 and 2024	Issued Shares	Amount		Shares	Amount
BALANCE, JANUARY 1, 2023	476,623	$	4.8	(11,004)	$	(1,301.2)	$	14,689.0	$	(5,718.3)	$	(2,101.9)	$	6,836.1	$	12,408.5
Stock-based compensation related activity	463	0.0		—	—		82.0		—		—		—		82.0
Issuance of common stock- stock purchase plan	52	0.0		—	—		8.2		—		—		—		8.2
Foreign currency translation adjustment, net of tax	—	—		—	—		—		157.7		—		60.8		218.5
Contributions from noncontrolling interest	—	—		—	—		—		—		—		10.5		10.5
Distributions to noncontrolling interest holders	—	—		—	—		—		—		—		(31.6)		(31.6)
Common stock distributions declared	—	—		—	—		—		—		(1,465.4)		—		(1,465.4)
Net income (loss)	—	—		—	—		—		—		811.5		(35.0)		776.5
BALANCE, JUNE 30, 2023	477,138	$	4.8	(11,004)	$	(1,301.2)	$	14,779.2	$	(5,560.6)	$	(2,755.8)	$	6,840.8	$	12,007.2
BALANCE, JANUARY 1, 2024	477,300	$	4.8	(11,004)	$	(1,301.2)	$	14,872.9	$	(5,739.5)	$	(3,638.8)	$	6,667.2	$	10,865.4
Stock-based compensation related activity	729	0.0		—	—		73.4		—		—		—		73.4
Issuance of common stock- stock purchase plan	52	0.0		—	—		8.7		—		—		—		8.7
Foreign currency translation adjustment, net of tax	—	—		—	—		—		(722.3)		—		(119.7)		(842.0)
Contributions from noncontrolling interest holders	—	—		—	—		—		—		—		152.4		152.4
Distributions to noncontrolling interest holders	—	—		—	—		—		—		—		(144.8)		(144.8)
Common stock distributions declared	—	—		—	—		—		—		(1,519.7)		—		(1,519.7)
Net income	—	—		—	—		—		—		1,817.7		12.4		1,830.1
BALANCE, JUNE 30, 2024	478,081	$	4.8	(11,004)	$	(1,301.2)	$	14,955.0	$	(6,461.8)	$	(3,340.8)	$	6,567.5	$	10,423.5

See accompanying notes to unaudited consolidated and condensed consolidated financial statements.

5

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED AND CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(tabular amounts in millions, unless otherwise noted)

1.    BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES

The accompanying consolidated and condensed consolidated financial statements have been prepared by American Tower Corporation (together with its subsidiaries, “ATC” or the “Company”) pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). The financial information included herein is unaudited. However, the Company believes that all adjustments, which are of a normal and recurring nature, considered necessary for a fair presentation of its financial position and results of operations for such periods have been included herein. The consolidated and condensed consolidated financial statements and related notes should be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2023 (the “2023 Form 10-K”). The results of operations for the three and six months ended June 30, 2024 are not necessarily indicative of the results that may be expected for the entire year.

Principles of Consolidation and Basis of Presentation—The accompanying consolidated and condensed consolidated financial statements include the accounts of the Company and those entities in which it has a controlling interest. Investments in entities that the Company does not control are accounted for using the equity method or as investments in equity securities, depending upon the Company’s ability to exercise significant influence over operating and financial policies. All intercompany accounts and transactions have been eliminated.

As of June 30, 2024, the Company holds (i) a 52% controlling interest in subsidiaries whose holdings consist of the Company’s operations in France, Germany and Spain (such subsidiaries collectively, “ATC Europe”) (Allianz and CDPQ (each as defined in note 11) hold the noncontrolling interests), (ii) a 51% controlling interest in a joint venture whose holdings consist of the Company’s operations in Bangladesh (Confidence Tower Holdings Ltd. (“Confidence Group”) holds the noncontrolling interest) and (iii) a controlling common equity interest of approximately 72% in the Company’s U.S. data center business (Stonepeak (as defined and further discussed in note 11) holds approximately 28% of the outstanding common equity and 100% of the outstanding mandatorily convertible preferred equity). As of June 30, 2024, ATC Europe holds an 87% and an 83% controlling interest in subsidiaries that consist of the Company’s operations in Germany and Spain, respectively (PGGM holds the noncontrolling interests). See note 11 for a discussion of changes to the Company’s noncontrolling interests during the six months ended June 30, 2024 and 2023.

Pending ATC TIPL Transaction—On January 4, 2024, the Company, through its subsidiaries, ATC Asia Pacific Pte. Ltd. and ATC Telecom Infrastructure Private Limited (“ATC TIPL”), entered into an agreement with Data Infrastructure Trust (“DIT”), an infrastructure investment trust sponsored by an affiliate of Brookfield Asset Management, pursuant to which DIT will acquire a 100% ownership interest in ATC TIPL (the “Pending ATC TIPL Transaction”). Subject to certain pre-closing terms, total aggregate consideration would potentially represent up to approximately 210 billion Indian Rupees (“INR”) (approximately $2.5 billion), including the value of the VIL OCDs and the VIL Shares (each as defined and further discussed in note 7), payments on certain existing customer receivables, the repayment of existing intercompany debt and the repayment, or assumption, of the Company’s existing term loan in India, by DIT. During the six months ended June 30, 2024, the Company sold the VIL Shares and the remaining VIL OCDs (each as discussed in note 7) and ATC TIPL distributed approximately 27.2 billion INR (approximately $325.9 million) to the Company. ATC TIPL expects to make a final distribution of approximately 2.4 billion INR (approximately $28.5 million), which includes the satisfaction of the economic benefit associated with the rights to payments on certain existing customer receivables. Each such distribution will be deducted from the total aggregate consideration to be received by the Company at closing. The Pending ATC TIPL Transaction is expected to close in the second half of 2024, subject to customary closing conditions, including government and regulatory approval.

Reportable Segments—The Company reports its results in seven segments – U.S. & Canada property, Asia-Pacific property, Africa property, Europe property, Latin America property, Data Centers and Services, which are discussed further in note 14.

Significant Accounting Policies—The Company’s significant accounting policies are described in note 1 to the Company’s consolidated financial statements included in the 2023 Form 10-K. There have been no material changes to the Company’s significant accounting policies during the six months ended June 30, 2024, other than those noted below.

Property and Equipment—The Company finalized its review of the estimated useful lives of its tower assets during the six months ended June 30, 2024. The Company now has over 20 years of operating history, and determined that it should modify its current estimates for asset lives based on its historical operating experience. The Company retained an independent consultant to assist the Company in completing this review and analysis. The Company previously depreciated its towers on a straight-line basis over the shorter of the term of the underlying ground lease (including

6

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED AND CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(tabular amounts in millions, unless otherwise noted)

renewal options) taking into account residual value or the estimated useful life of the tower, which the Company had historically estimated to be 20 years. The Company determined that the estimated useful life of its tower assets is 30 years, before taking into account residual value. Additionally, certain of the Company’s intangible assets are amortized on a similar basis to its tower assets, as the estimated useful lives of such intangible assets correlate to the useful life of the towers. The Company accounted for the changes in the useful lives as a change in accounting estimate under ASC 250 Accounting Changes and Error Corrections, which were recorded prospectively beginning on January 1, 2024. On January 1, 2024, the Company began depreciating its towers and related intangible assets on a straight-line basis over the remaining estimated useful life of the tower, taking into account the extended useful life and residual value. The extension of the asset lives (i) resulted in an approximately $515 million increase in the right of use asset, as additional renewal options may be included, with an offsetting adjustment made to increase the related operating lease liability and (ii) is expected to result in an estimated $730 million decrease in depreciation and amortization expense for the year ended December 31, 2024.

Asset Retirement Obligations—The Company finalized its review of the estimated settlement dates for its asset retirement obligations during the six months ended June 30, 2024. The Company now has over 20 years of operating history, and determined that it should modify its current estimated settlement dates based on its historical operating experience, management’s intent with respect to the assets, and the assets’ estimated useful lives. Based on its review and analysis, the Company concluded that a revision in the estimated settlement dates for its asset retirement obligations was appropriate. The Company accounted for the change in estimated settlement dates as a change in accounting estimate under ASC 250 Accounting Changes and Error Corrections, which was recorded prospectively beginning on January 1, 2024. The extension in the estimated settlement dates (i) resulted in a $470 million increase in the asset retirement obligation liability, with an offsetting adjustment made to the related long-lived tangible asset and an $875 million increase in the estimated undiscounted future cash outlay for asset retirement obligations, and (ii) is expected to result in an estimated $75 million decrease in accretion expense for the year ended December 31, 2024.

Adoption of Highly Inflationary Accounting in Ghana—The Ghanaian economy was deemed to be highly inflationary and, as a result, the Company adopted highly inflationary accounting as of January 1, 2024 for its subsidiary in Ghana. Under highly inflationary accounting, the functional currency of its subsidiary in Ghana will become the U.S. Dollar. All monetary and non-monetary assets and liabilities will be remeasured at the U.S. Dollar to Ghanaian Cedis exchange rate of 1 to 11.95 as of December 31, 2023. These amounts will become the new basis for those assets and liabilities as of January 1, 2024. Non-monetary assets and liabilities, as well as the corresponding income statement activities such as depreciation, amortization and equity, will continue to be measured at the historical exchange rate on December 31, 2023. Gains and losses on foreign currency arising in connection with the remeasurement of local currency denominated monetary assets and liabilities for foreign operating subsidiaries in economies that are deemed to be highly inflationary are reflected in Other expense in the consolidated statements of operations. This change is not expected to have a material impact on the Company’s financial statements, as Ghana’s assets and revenue are approximately 1% and 1% of consolidated assets and revenue, respectively.

Cash and Cash Equivalents and Restricted Cash—The reconciliation of cash and cash equivalents and restricted cash reported within the applicable balance sheet that sum to the total of the same such amounts shown in the statements of cash flows is as follows:

	Six Months Ended June 30,
	2024		2023
Cash and cash equivalents	$	2,492.1	$	2,015.7
Restricted cash	126.5		133.7
Total cash, cash equivalents and restricted cash	$	2,618.6	$	2,149.4

Revenue—The Company’s revenue is derived from leasing the right to use its communications sites, the land on which the sites are located, the land underlying its customers’ sites and the space in its data center facilities (the “lease component”) and from the reimbursement of costs incurred by the Company in operating the communications sites and data center facilities and supporting its customers’ equipment as well as other services and contractual rights (the “non-lease component”). Most of the Company’s revenue is derived from leasing arrangements and is accounted for as lease revenue unless the timing and pattern of revenue recognition of the non-lease component differs from the lease component. If the timing and pattern of the non-lease component revenue recognition differs from that of the lease component, the Company separately determines the stand-alone selling prices and pattern of revenue recognition for each performance obligation. Revenue related to distributed antenna system (“DAS”) networks and fiber and other related assets results from agreements with customers that are generally not accounted for as leases.

7

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED AND CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(tabular amounts in millions, unless otherwise noted)

Non-lease property revenue—Non-lease property revenue consists primarily of revenue generated from DAS networks, fiber and other property related revenue. DAS networks and fiber arrangements generally require that the Company provide the tenant the right to use available capacity on the applicable communications infrastructure. Performance obligations are satisfied over time for the duration of the arrangements. Non-lease property revenue also includes revenue generated from interconnection offerings in the Company’s data center facilities. Interconnection offerings are generally contracted on a month-to-month basis and are cancellable by the Company or the data center customer at any time. Performance obligations are satisfied over time for the duration of the arrangements. Other property related revenue streams, which include site inspections, are not material on either an individual or consolidated basis. There were no material changes in the receivables, contract assets and contract liabilities from contracts with customers for the three and six months ended June 30, 2024.

Services revenue—The Company offers tower-related services in the United States. These services include site application, zoning and permitting (“AZP”), structural and mount analyses, and construction management. There is a single performance obligation related to AZP and construction management, and revenue is recognized over time based on milestones achieved, which are determined based on costs expected to be incurred. Structural and mount analyses services may have more than one performance obligation, contingent upon the number of contracted services. Revenue is recognized at the point in time the services are completed.

A summary of revenue disaggregated by source and geography is as follows:

Three Months Ended June 30, 2024	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers		Total
Non-lease property revenue	$	77.2	$	2.2	$	6.2	$	5.2	$	27.6	$	32.8	$	151.2
Services revenue	47.4		—		—		—		—		—		47.4
Total non-lease revenue	$	124.6	$	2.2	$	6.2	$	5.2	$	27.6	$	32.8	$	198.6
Property lease revenue	1,238.2		358.7		287.7		198.0		421.1		198.0		2,701.7
Total revenue	$	1,362.8	$	360.9	$	293.9	$	203.2	$	448.7	$	230.8	$	2,900.3

Three Months Ended June 30, 2023	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers		Total
Non-lease property revenue	$	83.9	$	2.4	$	5.9	$	4.1	$	28.5	$	28.3	$	153.1
Services revenue	43.1		—		—		—		—		—		43.1
Total non-lease revenue	$	127.0	$	2.4	$	5.9	$	4.1	$	28.5	$	28.3	$	196.2
Property lease revenue	1,219.3		259.3		315.3		194.1		410.9		176.6		2,575.5
Total revenue	$	1,346.3	$	261.7	$	321.2	$	198.2	$	439.4	$	204.9	$	2,771.7

Six Months Ended June 30, 2024	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers		Total
Non-lease property revenue	$	150.1	$	4.4	$	12.3	$	8.7	$	56.3	$	64.4	$	296.2
Services revenue	77.6		—		—		—		—		—		77.6
Total non-lease revenue	$	227.7	$	4.4	$	12.3	$	8.7	$	56.3	$	64.4	$	373.8
Property lease revenue	2,476.0		683.1		573.6		399.0		837.9		391.0		5,360.6
Total revenue	$	2,703.7	$	687.5	$	585.9	$	407.7	$	894.2	$	455.4	$	5,734.4

Six Months Ended June 30, 2023	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers		Total
Non-lease property revenue	$	154.9	$	4.7	$	12.6	$	7.5	$	69.8	$	56.6	$	306.1
Services revenue	95.8		—		—		—		—		—		95.8
Total non-lease revenue	$	250.7	$	4.7	$	12.6	$	7.5	$	69.8	$	56.6	$	401.9
Property lease revenue	2,435.9		508.1		625.6		382.4		833.7		351.3		5,137.0
Total revenue	$	2,686.6	$	512.8	$	638.2	$	389.9	$	903.5	$	407.9	$	5,538.9

8

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED AND CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(tabular amounts in millions, unless otherwise noted)

Property revenue for the three months ended June 30, 2024 and 2023 includes straight-line revenue of $73.7 million and $120.8 million, respectively. Property revenue for the six months ended June 30, 2024 and 2023 includes straight-line revenue of $152.7 million and $232.8 million, respectively.

The Company actively monitors the creditworthiness of its customers. In recognizing customer revenue, the Company assesses the collectibility of both the amounts billed and the portion recognized in advance of billing on a straight-line basis. This assessment takes customer credit risk and business and industry conditions into consideration to ultimately determine the collectibility of the amounts billed. To the extent the amounts, based on management’s estimates, may not be collectible, revenue recognition is deferred until such point as collectibility is determined to be reasonably assured.

During the three and six months ended June 30, 2023, the Company deferred recognition of revenue of approximately $31.7 million and $64.7 million, respectively, related to a customer in India. During the three and six months ended June 30, 2024, the Company recognized approximately $66.7 million and $95.7 million, respectively, of this previously deferred revenue. As of June 30, 2024, the Company has fully recognized this previously deferred revenue related to a customer in India.

Stonepeak Development Partnership— During the three months ended June 30, 2024, the Company entered into an agreement with Stonepeak (as defined in note 11) to form a joint venture to construct a new data center in Denver, CO (the “Stonepeak Development Partnership”). At formation, the Company contributed assets with a value of $14.6 million to the Stonepeak Development Partnership and acquired a minority ownership interest (Stonepeak holds the controlling interests). The Company accounts for the Stonepeak Development Partnership as an equity method investment. Under this method, investments are recorded at cost, and are adjusted for the Company’s share of the entities’ income or loss and for distributions and contributions. The investment is recorded in Other non-current assets in the consolidated balance sheets.

Accounting Standards Updates—In November 2023, the Financial Accounting Standards Board (“FASB”) issued guidance, which is intended to improve reportable segment disclosure requirements, primarily through additional disclosures about significant segment expenses. The standard is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. The amendments should be applied retrospectively to all prior periods presented in the financial statements. The Company is currently evaluating the impact of this guidance on its consolidated financial statements and related disclosures.

In December 2023, the FASB issued guidance which requires public entities to provide enhanced income tax disclosures on an annual basis. The new guidance requires an expanded rate reconciliation and the disaggregation of cash taxes paid by U.S. federal, U.S. state and foreign jurisdictions. The updated guidance is effective for fiscal years beginning after December 15, 2024, with early adoption permitted. The Company is currently evaluating the impact of this guidance on its consolidated financial statements and related disclosures.

SEC Rule Changes— In March 2024, the SEC issued Final Rule No. 33-11275, “The Enhancement and Standardization of Climate-Related Disclosures for Investors.” If such rule remains in effect, the rule will require registrants to provide certain climate-related information in their registration statements and annual reports. The rule requires registrants to provide climate related disclosures, including, but not limited to, (i) material Scope 1 and Scope 2 greenhouse gas emissions, (ii) governance and oversight of material climate-related risks, (iii) the material impact of climate risks on the registrant’s strategy, business model and outlook, (iv) risk management processes for material climate-related risks and (v) material climate targets and goals. The rule also requires disclosure of (x) financial statement effects of severe weather events and other natural conditions, (y) carbon offset and renewable energy credit information and (z) the impact of severe weather events and other natural conditions on estimates and assumptions. Disclosure requirements will begin phasing in for fiscal years beginning on or after January 1, 2025. In April 2024, the SEC issued an order staying implementation of such rule pending the resolution of certain challenges. The outcome of ongoing litigation is currently unknown. The Company is currently evaluating the potential impact of such rule on its consolidated financial statements and disclosures.

9

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED AND CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(tabular amounts in millions, unless otherwise noted)

2.    PREPAID AND OTHER CURRENT ASSETS

Prepaid and other current assets consisted of the following:

	As of
	June 30, 2024		December 31, 2023
Prepaid assets	$	111.4	$	93.4
Prepaid income tax	151.2		102.9
Unbilled receivables	362.7		323.2
Value added tax and other consumption tax receivables	41.9		79.8
Other miscellaneous current assets (1)	116.0		347.6
Prepaid and other current assets	$	783.2	$	946.9

_______________

(1)As of December 31, 2023, includes the VIL OCDs (as defined and further discussed in note 7).

3.    LEASES

The Company determines if an arrangement is a lease at the inception of the agreement. The Company considers an arrangement to be a lease if it conveys the right to control the use of the communications infrastructure or ground space underneath communications infrastructure for a period of time in exchange for consideration. The Company is both a lessor and a lessee.

During the six months ended June 30, 2024, the Company made no changes to the methods described in note 4 to its consolidated financial statements included in the 2023 Form 10-K. As of June 30, 2024, the Company does not have any material related party leases as either a lessor or a lessee. To the extent there are any intercompany leases, these are eliminated in consolidation.

If incentives are present in the Company’s leases, they are evaluated to determine proper treatment and, to the extent present, are recorded in Other current assets and Other non-current assets in the consolidated balance sheets and amortized on a straight line basis over the corresponding lease term as a non-cash reduction to revenue. As of June 30, 2024, the remaining weighted average amortization period of the Company’s lease incentives was 10 years. As of June 30, 2024, Other current assets and Other non-current assets include $35.8 million and $333.0 million, respectively, for lease incentives.

Lessor— Historically, the Company has been able to successfully renew its applicable leases as needed to ensure continuation of its revenue. Accordingly, the Company assumes that it will have access to the communications infrastructure or ground space underlying its sites when calculating future minimum rental receipts through the end of the respective terms. Future minimum rental receipts expected under non-cancellable operating lease agreements as of June 30, 2024 were as follows:

Fiscal Year	Amount (1) (2)
Remainder of 2024	$	4,158.7
2025	7,845.4
2026	7,341.0
2027	7,112.4
2028	5,793.3
Thereafter	24,931.3
Total	$	57,182.1

_______________

(1)Balances are translated at the applicable period-end exchange rate, which may impact comparability between periods.    

(2)Balances represent contractual amounts owed with no adjustments made for expected collectibility.

Lessee—The Company assesses its right-of-use asset and other lease-related assets for impairment, as described in note 1 to the Company’s consolidated financial statements included in the 2023 Form 10-K. There were no material impairments recorded related to these assets during the three and six months ended June 30, 2024 and 2023.

The Company leases certain land, buildings, equipment and office space under operating leases and land and improvements, towers, equipment and vehicles under finance leases. As of June 30, 2024, operating lease assets were

10

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED AND CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(tabular amounts in millions, unless otherwise noted)

included in Right-of-use asset and finance lease assets were included in Property and equipment, net in the consolidated balance sheet. During the six months ended June 30, 2024, there were no material changes in the terms and provisions of the Company’s operating leases in which the Company is a lessee, other than those related to the change in estimated useful lives as described in note 1. As a result of the change in estimated useful lives of its assets, the Company reviewed its lease portfolio to determine whether additional renewal options were likely to be exercised. The Company concluded that these incremental renewals were lease modifications and has accounted for them accordingly. The extension of the asset lives resulted in an approximately $515 million increase in the right of use asset, as additional renewal options may be included, with an offsetting adjustment made to increase the related operating lease liability. There were no material changes in finance lease assets and liabilities during the six months ended June 30, 2024.

Information about other lease-related balances is as follows:

	As of
	June 30, 2024		December 31, 2023
Operating leases:
Right-of-use asset	$	9,012.1	$	8,878.8
Current portion of lease liability	$	703.4	$	794.6
Lease liability	7,717.7		7,438.7
Total operating lease liability	$	8,421.1	$	8,233.3

The weighted-average remaining lease terms and incremental borrowing rates are as follows:

	As of
	June 30, 2024		December 31, 2023
Operating leases:
Weighted-average remaining lease term (years) (1)	13.4		11.6
Weighted-average incremental borrowing rate	6.7	%	5.8	%

______________

(1)As of June 30, 2024, reflects the change in estimated useful lives as described in note 1.

The following table sets forth the components of lease cost:

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Operating lease cost	$	327.0	$	313.9	$	653.4	$	620.6
Variable lease costs not included in lease liability (1)	93.7		114.5		182.9		223.6

______________

(1)Primarily includes property tax paid on behalf of the landlord.

Supplemental cash flow information is as follows:

	Six Months Ended June 30,
	2024		2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	(673.4)	$	(641.5)
Non-cash items:
New operating leases (1)	$	78.8	$	113.9
Operating lease modifications and reassessments (2)	$	713.8	$	191.3

______________

(1)Amount includes new operating leases and leases acquired in connection with acquisitions.

(2)For the six months ended June 30, 2024, reflects the change in estimated useful lives as described in note 1.

As of June 30, 2024, the Company does not have material operating or financing leases that have not yet commenced.

11

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED AND CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(tabular amounts in millions, unless otherwise noted)

Maturities of operating lease liabilities as of June 30, 2024 were as follows:

Fiscal Year	Operating Lease (1)
Remainder of 2024	$	592.6
2025	1,114.8
2026	1,062.0
2027	1,005.2
2028	945.4
Thereafter	8,306.9
Total lease payments	13,026.9
Less amounts representing interest	(4,605.8)
Total lease liability	8,421.1
Less current portion of lease liability	703.4
Non-current lease liability	$	7,717.7

_______________

(1)Balances are translated at the applicable period-end exchange rate, which may impact comparability between periods.

4.    GOODWILL AND OTHER INTANGIBLE ASSETS

The changes in the carrying value of goodwill for each of the Company’s business segments were as follows:

	Property												Services		Total
	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers
Balance as of January 1, 2024	$	4,638.6	$	562.7	$	497.7	$	3,051.9	$	966.1	$	2,920.0	$	2.0	$	12,639.0
Effect of foreign currency translation	(1.6)		(1.7)		14.7		(89.9)		(77.4)		—		—		(155.9)
Balance as of June 30, 2024	$	4,637.0	$	561.0	$	512.4	$	2,962.0	$	888.7	$	2,920.0	$	2.0	$	12,483.1

The Company’s other intangible assets subject to amortization consisted of the following:

		As of June 30, 2024						As of December 31, 2023
	Estimated Useful Lives (years) (1)	Gross Carrying Value		Accumulated Amortization		Net Book Value		Gross Carrying Value		Accumulated Amortization		Net Book Value
Acquired network location intangibles (2)	Up to 30	$	5,867.6	$	(2,803.5)	$	3,064.1	$	5,981.5	$	(2,775.8)	$	3,205.7
Acquired tenant-related intangibles	Up to 30	18,564.2		(6,893.8)		11,670.4		18,894.5		(6,698.6)		12,195.9
Acquired licenses and other intangibles	2-30	1,490.8		(466.2)		1,024.6		1,561.1		(442.0)		1,119.1
Total other intangible assets		$	25,922.6	$	(10,163.5)	$	15,759.1	$	26,437.1	$	(9,916.4)	$	16,520.7

_______________

(1)As of June 30, 2024, reflects the change in estimated useful lives as described in note 1.

(2)Beginning January 1, 2024, acquired network location intangibles are amortized over the remaining estimated useful life of the tower, taking into account residual value, generally up to 30 years, as the Company considers these intangibles to be directly related to the tower assets. Prior to January 1, 2024, acquired network location intangibles were amortized over the shorter of the term of the corresponding ground lease, taking into consideration lease renewal options and residual value, or the estimated useful life of the tower, generally up to 20 years.

The acquired network location intangibles represent the value to the Company of the incremental revenue growth that could potentially be obtained from leasing the excess capacity on acquired tower communications infrastructure. The acquired tenant-related intangibles typically represent the value to the Company of tenant contracts and relationships in place at the time of an acquisition or similar transaction, including assumptions regarding estimated renewals. Other intangibles represent the value of acquired licenses, trade name and in place leases. In place lease value represents the

12

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED AND CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(tabular amounts in millions, unless otherwise noted)

fair value of costs avoided in securing data center customers, including vacancy periods, legal costs and commissions. In place lease value also includes assumptions on similar costs avoided upon the renewal or extension of existing leases on a basis consistent with occupancy assumptions used in the fair value of other assets.

The Company amortizes its acquired intangible assets on a straight-line basis over their estimated useful lives. As of June 30, 2024, the remaining weighted average amortization period of the Company’s intangible assets was 20 years. Amortization of intangible assets for the three and six months ended June 30, 2024 was $237.3 million and $479.8 million, respectively. Amortization of intangible assets for the three and six months ended June 30, 2023 was $358.2 million and $727.7 million, respectively. Based on current exchange rates, the Company expects to record amortization expense as follows over the remainder of the current year and the five subsequent years:

Fiscal Year	Amount (1)
Remainder of 2024	$	466.0
2025	913.7
2026	875.6
2027	863.7
2028	852.2
2029	833.2

______________

(1)As of June 30, 2024, reflects the change in estimated useful lives as described in note 1.

5.    ACCRUED EXPENSES

Accrued expenses consisted of the following:

	As of
	June 30, 2024		December 31, 2023
Accrued construction costs	$	145.0	$	183.8
Accrued income tax payable	28.1		21.0
Accrued pass-through costs	99.4		77.4
Amounts payable for acquisitions	2.0		27.7
Amounts payable to tenants	90.5		103.3
Accrued property and real estate taxes	301.9		295.5
Accrued rent	78.3		75.1
Payroll and related withholdings	107.6		147.4
Other accrued expenses	313.4		349.4
Total accrued expenses	$	1,166.2	$	1,280.6

6.    LONG-TERM OBLIGATIONS

Outstanding amounts under the Company’s long-term obligations, reflecting discounts, premiums and debt issuance costs, consisted of the following:

	As of
	June 30, 2024		December 31, 2023		Maturity Date
2021 Multicurrency Credit Facility (1) (2)	$	1,170.0	$	723.4	July 1, 2026
2021 Term Loan (1)	997.4		997.0		January 31, 2027
2021 Credit Facility (1)	2,113.4		1,603.4		July 1, 2028
2021 EUR Three Year Delayed Draw Term Loan (1) (2) (3)	—		910.7		N/A
0.600% senior notes (4)	—		500.0		N/A
5.00% senior notes (5)	—		1,000.1		N/A
3.375% senior notes (6)	—		649.7		N/A
2.950% senior notes	649.1		648.2		January 15, 2025
2.400% senior notes	749.1		748.5		March 15, 2025
1.375% senior notes (7)	534.6		550.0		April 4, 2025
4.000% senior notes	748.7		748.1		June 1, 2025

13

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED AND CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(tabular amounts in millions, unless otherwise noted)

1.300% senior notes	498.8	498.3	September 15, 2025
4.400% senior notes	499.0	498.7	February 15, 2026
1.600% senior notes	698.0	697.4	April 15, 2026
1.950% senior notes (7)	533.8	549.6	May 22, 2026
1.450% senior notes	596.7	595.9	September 15, 2026
3.375% senior notes	995.6	994.7	October 15, 2026
3.125% senior notes	399.1	398.9	January 15, 2027
2.750% senior notes	747.5	747.0	January 15, 2027
0.450% senior notes (7)	800.5	824.3	January 15, 2027
0.400% senior notes (7)	532.6	548.2	February 15, 2027
3.650% senior notes	645.6	644.8	March 15, 2027
4.125% senior notes (7)	639.6	658.6	May 16, 2027
3.55% senior notes	747.5	747.1	July 15, 2027
3.600% senior notes	696.5	696.0	January 15, 2028
0.500% senior notes (7)	799.0	822.8	January 15, 2028
1.500% senior notes	647.5	647.1	January 31, 2028
5.500% senior notes	694.3	693.6	March 15, 2028
5.250% senior notes	644.5	643.9	July 15, 2028
5.800% senior notes	744.0	743.4	November 15, 2028
5.200% senior notes	643.0	—	February 15, 2029
3.950% senior notes	594.2	593.7	March 15, 2029
0.875% senior notes (7)	799.7	823.7	May 21, 2029
3.800% senior notes	1,639.5	1,638.6	August 15, 2029
2.900% senior notes	744.7	744.2	January 15, 2030
3.900% senior notes (7)	530.6	—	May 16, 2030
2.100% senior notes	743.6	743.1	June 15, 2030
0.950% senior notes (7)	530.2	546.0	October 5, 2030
1.875% senior notes	793.8	793.3	October 15, 2030
2.700% senior notes	695.3	695.0	April 15, 2031
4.625% senior notes (7)	529.3	545.2	May 16, 2031
2.300% senior notes	693.1	692.7	September 15, 2031
1.000% senior notes (7)	690.7	711.5	January 15, 2032
4.050% senior notes	643.3	642.9	March 15, 2032
5.650% senior notes	791.0	790.6	March 15, 2033
1.250% senior notes (7)	529.8	545.8	May 21, 2033
5.550% senior notes	841.0	840.6	July 15, 2033
5.900% senior notes	741.8	741.5	November 15, 2033
5.450% senior notes	640.2	—	February 15, 2034
4.100% senior notes (7)	528.3	—	May 16, 2034
3.700% senior notes	592.5	592.4	October 15, 2049
3.100% senior notes	1,038.7	1,038.6	June 15, 2050
2.950% senior notes	1,023.5	1,023.2	January 15, 2051
Total American Tower Corporation debt	36,520.2	36,472.0
Series 2015-2 notes (8)	524.4	524.1	June 16, 2025
Series 2018-1A securities (9)	497.2	496.8	March 15, 2028
Series 2023-1A securities (10)	1,286.2	1,284.4	March 15, 2028
Other subsidiary debt (11)	119.9	123.6	Various
Total American Tower subsidiary debt	2,427.7	2,428.9
Finance lease obligations	20.5	20.6
Total	38,968.4	38,921.5
Less current portion of long-term obligations	(3,329.2)	(3,187.5)

14

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED AND CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(tabular amounts in millions, unless otherwise noted)

Long-term obligations $ 35,639.2  $ 35,734.0 

_______________

(1)Accrues interest at a variable rate.

(2)As of December 31, 2023 reflects borrowings denominated in Euro (“EUR”) and, for the 2021 Multicurrency Credit Facility (as defined below), reflects borrowings denominated in both EUR and U.S. Dollars (“USD”).

(3)Repaid in full on May 21, 2024 using borrowings under the 2021 Multicurrency Credit Facility.

(4)Repaid in full on January 12, 2024 using borrowings under the 2021 Multicurrency Credit Facility.

(5)Repaid in full on February 14, 2024 using borrowings under the 2021 Multicurrency Credit Facility.

(6)Repaid in full on May 15, 2024 using borrowings under the 2021 Credit Facility.

(7)Notes are denominated in EUR.

(8)Maturity date reflects the anticipated repayment date; final legal maturity is June 15, 2050.

(9)Maturity date reflects the anticipated repayment date; final legal maturity is March 15, 2048.

(10)Maturity date reflects the anticipated repayment date; final legal maturity is March 15, 2053.

(11)Includes borrowings under an unsecured term loan in India (the “India Term Loan”), which is denominated in INR. In January 2024, the Company amended the India Term Loan to extend the maturity date to December 31, 2024. As of December 31, 2023, also includes amounts drawn under letters of credit in Nigeria, which are denominated in USD.

Current portion of long-term obligations—The Company’s current portion of long-term obligations primarily includes (i) $650.0 million aggregate principal amount of the Company’s 2.950% senior unsecured notes due January 15, 2025, (ii) $750.0 million aggregate principal amount of the Company’s 2.400% senior unsecured notes due March 15, 2025, (iii) €500.0 million aggregate principal amount of the Company’s 1.375% senior unsecured notes due April 4, 2025, (iv) $750.0 million aggregate principal amount of the Company’s 4.000% senior unsecured notes due June 1, 2025 and (v) $525.0 million aggregate principal amount of the Company’s Secured Tower Revenue Notes, Series 2015-2, Class A due June 16, 2025.

Securitized Debt—Cash flows generated by the communications sites that secure the securitized debt of the Company are only available for payment of such debt and are not available to pay the Company’s other obligations or the claims of its creditors. However, subject to certain restrictions, the Company holds the right to receive the excess cash flows not needed to service the securitized debt and other obligations arising out of the securitizations. The securitized debt is the obligation of the issuers thereof or borrowers thereunder, as applicable, and their subsidiaries, and not of the Company or its other subsidiaries.

Repayments of Senior Notes

Repayment of 0.600% Senior Notes—On January 12, 2024, the Company repaid $500.0 million aggregate principal amount of the Company’s 0.600% senior unsecured notes due 2024 (the “0.600% Notes”) upon their maturity. The 0.600% Notes were repaid using borrowings under the 2021 Multicurrency Credit Facility. Upon completion of the repayment, none of the 0.600% Notes remained outstanding.

Repayment of 5.00% Senior Notes—On February 14, 2024, the Company repaid $1.0 billion aggregate principal amount of the Company’s 5.00% senior unsecured notes due 2024 (the “5.00% Notes”) upon their maturity. The 5.00% Notes were repaid using borrowings under the 2021 Multicurrency Credit Facility. Upon completion of the repayment, none of the 5.00% Notes remained outstanding.

Repayment of 3.375% Senior Notes—On May 15, 2024, the Company repaid $650.0 million aggregate principal amount of the Company’s 3.375% senior unsecured notes due 2024 (the “3.375% Notes”) upon their maturity. The 3.375% Notes were repaid using borrowings under the 2021 Credit Facility. Upon completion of the repayment, none of the 3.375% Notes remained outstanding.

Offerings of Senior Notes

5.200% Senior Notes and 5.450% Senior Notes Offering—On March 7, 2024, the Company completed a registered public offering of $650.0 million aggregate principal amount of 5.200% senior unsecured notes due 2029 (the “5.200% Notes”) and $650.0 million aggregate principal amount of 5.450% senior unsecured notes due 2034 (the “5.450% Notes”). The net proceeds from this offering were approximately $1,281.3 million, after deducting commissions and estimated expenses. The Company used the net proceeds to repay existing indebtedness under the 2021 Multicurrency Credit Facility.

3.900% Senior Notes and 4.100% Senior Notes Offering—On May 29, 2024, the Company completed a registered public offering of 500.0 million EUR ($540.1 million at the date of issuance) aggregate principal amount of 3.900% senior unsecured notes due 2030 (the “3.900% Notes”) and 500.0 million EUR ($540.1 million at the date of issuance) aggregate principal amount of 4.100% senior unsecured notes due 2034 (the “4.100% Notes” and, together with the

15

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED AND CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(tabular amounts in millions, unless otherwise noted)

5.200% Notes, the 5.450% Notes and the 3.900% Notes, the “Notes”). The net proceeds from this offering were approximately 988.4 million EUR (approximately $1,067.5 million at the date of issuance), after deducting commissions and estimated expenses. The Company used the net proceeds to repay existing EUR indebtedness under the 2021 Multicurrency Credit Facility.

The key terms of the Notes are as follows:

Senior Notes	Aggregate Principal Amount (in millions)		Issue Date and Interest Accrual Date	Maturity Date	Contractual Interest Rate	First Interest Payment	Interest Payments Due (1)	Par Call Date (2)
5.200% Notes	$	650.0	March 7, 2024	February 15, 2029	5.200%	August 15, 2024	February 15 and August 15	January 15, 2029
5.450% Notes	$	650.0	March 7, 2024	February 15, 2034	5.450%	August 15, 2024	February 15 and August 15	November 15, 2033
3.900% Notes (3)	$	540.1	May 29, 2024	May 16, 2030	3.900%	May 16, 2025	May 16	February 16, 2030
4.100% Notes (3)	$	540.1	May 29, 2024	May 16, 2034	4.100%	May 16, 2025	May 16	February 16, 2034

___________

(1)Accrued and unpaid interest on USD denominated notes is payable in USD semi-annually in arrears and will be computed from the issue date on the basis of a 360-day year comprised of twelve 30-day months. Interest on EUR-denominated notes is payable in EUR annually and will be computed on the basis of the actual number of days in the period for which interest is being calculated and the actual number of days from and including the last date on which interest was paid on the notes, beginning on the issue date.

(2)The Company may redeem the Notes at any time, in whole or in part, at a redemption price equal to 100% of the principal amount of the Notes plus a make-whole premium, together with accrued interest to the redemption date. If the Company redeems the Notes on or after the par call date, the Company will not be required to pay a make-whole premium.

(3)The 3.900% Notes and the 4.100% Notes are denominated in EUR; dollar amounts represent the equivalent issuance date aggregate principal amount.

If the Company undergoes a change of control and corresponding ratings decline, each as defined in the applicable supplemental indenture for the Notes, the Company may be required to repurchase all of the Notes at a purchase price equal to 101% of the aggregate principal amount of the Notes repurchased, plus accrued and unpaid interest (including additional interest, if any), up to but not including the repurchase date. The Notes rank equally in right of payment with all of the Company’s other senior unsecured debt obligations and are structurally subordinated to all existing and future indebtedness and other obligations of its subsidiaries.

The supplemental indentures contain certain covenants that restrict the Company’s ability to merge, consolidate or sell assets and its (together with its subsidiaries’) ability to incur liens. These covenants are subject to a number of exceptions, including that the Company and its subsidiaries may incur certain liens on assets, mortgages or other liens securing indebtedness if the aggregate amount of indebtedness secured by such liens does not exceed 3.5x Adjusted EBITDA, as defined in the applicable supplemental indenture.

Bank Facilities

2021 Multicurrency Credit Facility—During the six months ended June 30, 2024, the Company borrowed an aggregate of $3.6 billion, including 0.9 billion EUR ($1.0 billion as of the borrowing date) and repaid an aggregate of $3.1 billion, including 1.1 billion EUR ($1.2 billion as of the repayment date), of revolving indebtedness under the Company’s $6.0 billion senior unsecured multicurrency revolving credit facility, as amended and restated in December 2021, as further amended (the “2021 Multicurrency Credit Facility”). The Company used the borrowings to repay outstanding indebtedness, including the 0.600% Notes, the 5.00% Notes and the 2021 EUR Three Year Delayed Draw Term Loan (as defined below), and for general corporate purposes. As of June 30, 2024, there are no EUR borrowings outstanding under the 2021 Multicurrency Credit Facility.

2021 Credit Facility—During the six months ended June 30, 2024, the Company borrowed an aggregate of $1.5 billion and repaid an aggregate of $1.0 billion of revolving indebtedness under the Company’s $4.0 billion senior unsecured revolving credit facility, as amended and restated in December 2021, as further amended (the “2021 Credit Facility”). The Company used the borrowings to repay outstanding indebtedness, including the 3.375% Notes, and for general corporate purposes.

Repayment of 2021 EUR Three Year Delayed Draw Term Loan—On May 21, 2024, the Company repaid all amounts outstanding under its 825 million EUR ($895.5 million as of the repayment date) unsecured term loan, as amended in

16

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED AND CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(tabular amounts in millions, unless otherwise noted)

December 2021 (the “2021 EUR Three Year Delayed Draw Term Loan”) using borrowings under the 2021 Multicurrency Credit Facility.

As of June 30, 2024, the key terms under the 2021 Multicurrency Credit Facility, the 2021 Credit Facility and the Company’s $1.0 billion unsecured term loan, as amended and restated in December 2021, as further amended (the “2021 Term Loan”) were as follows:

	Outstanding Principal Balance (in millions)		Undrawn letters of credit (in millions)		Maturity Date		Current margin over SOFR or EURIBOR (1)		Current commitment fee (2)
2021 Multicurrency Credit Facility	$	1,170.0	$	3.5	July 1, 2026	(3)	1.125	%	0.110	%
2021 Credit Facility	2,113.4		30.4		July 1, 2028	(3)	1.125	%	0.110	%
2021 Term Loan	1,000.0		N/A		January 31, 2027		1.125	%	N/A

_______________

(1)SOFR applies to the USD denominated borrowings under the 2021 Multicurrency Credit Facility, the 2021 Credit Facility and the 2021 Term Loan.

(2)Fee on undrawn portion of each credit facility.

(3)Subject to two optional renewal periods.

7.    FAIR VALUE MEASUREMENTS

The Company determines the fair value of its financial instruments based on the fair value hierarchy, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Below are the three levels of inputs that may be used to measure fair value:

Level 1	Quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date.
Level 2	Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
Level 3	Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

Items Measured at Fair Value on a Recurring Basis—The fair values of the Company’s financial assets and liabilities that are required to be measured on a recurring basis at fair value were as follows:

	June 30, 2024					December 31, 2023
	Fair Value Measurements Using					Fair Value Measurements Using
	Level 1		Level 2		Level 3	Level 1		Level 2		Level 3
Assets:
Investments in equity securities (1)	$	54.2	$	5.3	—	$	28.2	$	5.3	—
VIL OCDs	—		—		—	—		$	192.3	—

_______________

(1)Investments in equity securities are recorded in Notes receivable and other non-current assets in the consolidated balance sheet at fair value. Unrealized holding gains and losses for equity securities are recorded in Other income (expense) in the consolidated statements of operations in the current period. During the three and six months ended June 30, 2024 and 2023, the Company recognized unrealized gains (losses) of $40.7 million, $(1.8) million, $26.0 million and $(0.6) million, respectively, for equity securities held as of June 30, 2024.

17

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED AND CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(tabular amounts in millions, unless otherwise noted)

VIL Optionally Convertible Debentures—In February 2023, and as amended in August 2023, one of the Company’s customers in India, Vodafone Idea Limited (“VIL”), issued optionally convertible debentures (the “VIL OCDs”) to the Company’s subsidiary, ATC TIPL, in exchange for VIL’s payment of certain amounts towards accounts receivables. The VIL OCDs were (a) to be repaid by VIL with interest or (b) convertible into equity of VIL. If converted and following registration, such equity shall be free to trade in the open market beginning on the one year anniversary of the date of issuance of the VIL OCDs. The VIL OCDs were issued for an aggregate face value of 16.0 billion INR (approximately $193.2 million on the date of issuance). The VIL OCDs were to mature in tranches with 8.0 billion INR (approximately $96.6 million on the date of issuance) maturing on August 27, 2023 and 8.0 billion INR (approximately $96.6 million on the date of issuance) maturing on August 27, 2024. In August 2023, the Company amended the agreements governing the VIL OCDs to, among other items, extend the maturity of the first tranche of the VIL OCDs to August 27, 2024. The fair value of the VIL OCDs at issuance was approximately $116.5 million. The VIL OCDs accrue interest at a rate of 11.2% annually. Interest is payable to ATC TIPL semi-annually, with the first payment received in September 2023.

On March 23, 2024, the Company converted an aggregate face value of 14.4 billion INR (approximately $172.7 million) of VIL OCDs into 1,440 million shares of equity of VIL (the “VIL Shares”).

On April 29, 2024, the Company completed the sale of 1,440 million VIL Shares at a price of 12.78 INR per share. The net proceeds for this transaction were approximately 18.0 billion INR (approximately $216.0 million at the date of settlement) after deducting commissions and fees.

On June 5, 2024, the Company completed the sale of the remaining aggregate face value of 1.6 billion INR (approximately $19.2 million) of the VIL OCDs. The net proceeds for this transaction, excluding accrued interest, were approximately 1.8 billion INR (approximately $22.0 million at the date of settlement) after deducting fees.

During the three months ended June 30, 2024, the Company recognized a gain of $46.4 million on the sales of the VIL Shares and the VIL OCDs. The gains on the sales of the VIL Shares and the VIL OCDs are recorded in Other income (expense) in the consolidated statements of operations in the current period. As of June 30, 2024, none of the VIL Shares or the VIL OCDs remained outstanding.

Items Measured at Fair Value on a Nonrecurring Basis

Assets Held and Used—The Company’s long-lived assets are recorded at amortized cost and, if impaired, are adjusted to fair value using Level 3 inputs. There were no material long-lived asset impairments during the three and six months ended June 30, 2024 or 2023 and there were no significant unobservable inputs used to determine the fair value of long-lived assets during the three and six months ended June 30, 2024 or 2023.

Fair Value of Financial Instruments—The Company’s financial instruments for which the carrying value reasonably approximates fair value at June 30, 2024 and December 31, 2023 include cash and cash equivalents, restricted cash, accounts receivable and accounts payable. The Company’s estimates of fair value of its long-term obligations, including the current portion, are based primarily upon reported market values. For long-term debt not actively traded, fair value is estimated using either indicative price quotes or a discounted cash flow analysis using rates for debt with similar terms and maturities. As of June 30, 2024 and December 31, 2023, the carrying value of long-term obligations, including the current portion, was $39.0 billion and $38.9 billion, respectively. As of June 30, 2024, the fair value of long-term obligations, including the current portion, was $36.4 billion, of which $29.7 billion was measured using Level 1 inputs and $6.7 billion was measured using Level 2 inputs. As of December 31, 2023, the fair value of long-term obligations, including the current portion, was $36.7 billion, of which $30.0 billion was measured using Level 1 inputs and $6.7 billion was measured using Level 2 inputs.

8.    INCOME TAXES

The Company provides for income taxes at the end of each interim period based on the estimated effective tax rate (“ETR”) for the full fiscal year. Cumulative adjustments to the Company’s estimate are recorded in the interim period in which a change in the estimated annual ETR is determined. Under the provisions of the Internal Revenue Code of 1986, as amended, the Company may deduct earnings distributed to stockholders against the income generated by its real estate investment trust (“REIT”) operations. The Company continues to be subject to income taxes on the income of its domestic taxable REIT subsidiaries and income taxes in foreign jurisdictions where it conducts operations.

The Company provides valuation allowances if, based on the available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized. Management assesses the available evidence to estimate if sufficient future taxable income will be generated to use the existing deferred tax assets. Valuation allowances may be reversed if, based on changes in facts and circumstances, the net deferred tax assets have been determined to be realizable.

18

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED AND CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(tabular amounts in millions, unless otherwise noted)

The increases in the income tax provision during the three and six months ended June 30, 2024 were primarily attributable to increased earnings in certain foreign jurisdictions, partially due to the impacts of the change in estimated useful lives on depreciation and amortization expense as described in note 1. Additionally, the income tax provision for the three and six months ended June 30, 2023 included a benefit from the application of a tax law change in Kenya.

As of June 30, 2024 and December 31, 2023, the total unrecognized tax benefits that would impact the ETR, if recognized, were approximately $121.3 million and $130.7 million, respectively. The amount of unrecognized tax benefits during the three and six months ended June 30, 2024 includes (i) additions to the Company’s existing tax positions of $1.6 million and $2.6 million, respectively, (ii) reductions due to foreign currency exchange rate fluctuations of $7.6 million and $7.2 million, respectively, (iii) reductions to the Company’s prior year tax positions and settlements of $3.4 million and $3.4 million, respectively, and (iv) reductions due to the expiration of statutes of limitation of $1.4 million and $1.4 million, respectively. Unrecognized tax benefits are expected to change over the next 12 months if certain tax matters ultimately settle with the applicable taxing jurisdiction during this time frame, as described in note 12 to the Company’s consolidated financial statements included in the 2023 Form 10-K. The impact of the amount of these changes to previously recorded uncertain tax positions could range from zero to $10.2 million.

The Company recorded the following penalties and income tax-related interest expense during the three and six months ended June 30, 2024 and 2023:

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Penalties and income tax-related interest expense	$	6.2	$	3.2	$	11.7	$	6.0

As of June 30, 2024 and December 31, 2023, the total amount of accrued income tax related interest and penalties included in the consolidated balance sheets were $68.6 million and $62.8 million, respectively.

9.    STOCK-BASED COMPENSATION

Summary of Stock-Based Compensation Plans—The Company maintains equity incentive plans that provide for the grant of stock-based awards to its directors, officers and employees. The Company’s 2007 Equity Incentive Plan, as amended (the “2007 Plan”), provides for the grant of non-qualified and incentive stock options, as well as restricted stock units, restricted stock and other stock-based awards. Exercise prices for non-qualified and incentive stock options are not less than the fair value of the underlying common stock on the date of grant. Equity awards typically vest ratably. Awards granted prior to March 10, 2023 generally vest over four years for time-based restricted stock units (“RSUs”) and stock options. In December 2022, the Company’s Compensation Committee changed the terms of its awards to generally vest over three years. The change in vesting terms is applicable for new awards granted beginning on March 10, 2023 and does not change the vesting terms applicable to grants awarded prior to March 10, 2023. Performance-based restricted stock units (“PSUs”) generally vest over three years. Stock options generally expire ten years from the date of grant. As of June 30, 2024, the Company had the ability to grant stock-based awards with respect to an aggregate of 3.3 million shares of common stock under the 2007 Plan. In addition, the Company maintains an employee stock purchase plan (the “ESPP”) pursuant to which eligible employees may purchase shares of the Company’s common stock on the last day of each bi-annual offering period at a 15% discount from the lower of the closing market value on the first or last day of such offering period. The offering periods run from June 1 through November 30 and from December 1 through May 31 of each year.

During the three and six months ended June 30, 2024 and 2023, the Company recorded the following stock-based compensation expense in selling, general, administrative and development expense:

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Stock-based compensation expense	$	46.3	$	49.4	$	111.2	$	114.9

Stock Options—As of June 30, 2024, there was no unrecognized compensation expense related to unvested stock options.

19

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED AND CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(tabular amounts in millions, unless otherwise noted)

The Company’s option activity for the six months ended June 30, 2024 was as follows (shares disclosed in full amounts):

	Number of Options
Outstanding as of January 1, 2024	766,955
Exercised	(178,416)
Forfeited	—
Expired	—
Outstanding as of June 30, 2024	588,539

Restricted Stock Units—As of June 30, 2024, total unrecognized compensation expense related to unvested RSUs granted under the 2007 Plan was $217.4 million and is expected to be recognized over a weighted average period of approximately two years. Vesting of RSUs is subject generally to the employee’s continued employment or death, disability or qualified retirement (each as defined in the applicable RSU award agreement).

Performance-Based Restricted Stock Units—During the six months ended June 30, 2024, the Company’s Compensation Committee (the “Compensation Committee”) granted an aggregate of 87,550 PSUs (the “2024 PSUs”) to its executive officers and established the performance and market metrics for these awards. During the years ended December 31, 2023 and 2022, the Compensation Committee granted an aggregate of 118,684 PSUs (the “2023 PSUs”) and 98,542 PSUs (the “2022 PSUs”), respectively, to its executive officers and established the performance metrics for these awards. Threshold, target and maximum parameters were established for the metrics for a three-year performance period with respect to each of the 2024 PSUs, the 2023 PSUs and the 2022 PSUs and will be used to calculate the number of shares that will be issuable when each award vests, which may range from zero to 200% of the target amounts. At the end of each three-year performance period, the number of shares that vest will depend on the degree of achievement against the pre-established goals. PSUs will be paid out in common stock at the end of each performance period, subject generally to the executive’s continued employment or death, disability or qualified retirement (each as defined in the applicable PSU award agreement). PSUs will accrue dividend equivalents prior to vesting, which will be paid out only in respect of shares that actually vest.

The 2024 PSUs include a market condition component based on relative total shareholder return as measured against the REIT constituents included in the S&P 500 Index. For the component of the 2024 PSUs subject to a market condition, fair value is determined using a Monte Carlo simulation model, which uses multiple input variables to determine the probability of satisfying the market condition requirements. The grant date fair value of the market condition component of the 2024 PSUs is $216.11.

Key assumptions used to apply this pricing model were as follows:

	Six Months Ended June 30, 2024
Expected term (years)	2.81
Risk-free interest rate	4.31	%
Annualized volatility	26.75	%

20

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED AND CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(tabular amounts in millions, unless otherwise noted)

Restricted Stock Units and Performance-Based Restricted Stock Units—The Company’s RSU and PSU activity for the six months ended June 30, 2024 was as follows (shares disclosed in full amounts): 

	RSUs	PSUs
Outstanding as of January 1, 2024 (1)	1,638,711	363,488
Granted (2)	692,621	87,550
Vested and Released (3)	(667,001)	(144,925)
Forfeited	(24,680)	(1,337)
Outstanding as of June 30, 2024	1,639,651	304,776
Vested and deferred as of June 30, 2024 (4)	29,316	—

_______________

(1)PSUs consist of the target number of shares issuable at the end of the three-year performance period for the outstanding 2023 PSUs and the outstanding 2022 PSUs, or 118,684 shares and 98,542 shares, respectively, the shares issuable at the end of the three-year performance period for the PSUs granted in 2021 (the “2021 PSUs”) based on achievement against the performance metrics for the three-year performance period, or 127,318 shares and the target remaining number of shares issuable at the end of the one-year performance period for PSUs granted to certain non-executive employees during the year ended December 31, 2023, net of forfeitures, or 18,944 shares (the “Retention PSUs”).

(2)PSUs consist of the target number of shares issuable at the end of the three-year performance period for the 2024 PSUs, or 87,550 shares.

(3)PSUs consist of shares vested pursuant to the 2021 PSUs and the Retention PSUs. There are no additional shares to be earned related to the 2021 PSUs or the Retention PSUs.

(4)Vested and deferred RSUs are related to deferred compensation for certain former employees.

During the three and six months ended June 30, 2024, the Company recorded $7.2 million and $16.3 million, respectively, in stock-based compensation expense for equity awards in which the performance goals have been established and were probable of being achieved. The remaining unrecognized compensation expense related to these awards at June 30, 2024 was $15.4 million based on the Company’s current assessment of the probability of achieving the performance goals. The weighted average period over which the cost will be recognized is approximately two years.

10.    EQUITY

Sales of Equity Securities—The Company receives proceeds from sales of its equity securities pursuant to the ESPP and upon exercise of stock options granted under the 2007 Plan. During the six months ended June 30, 2024, the Company received an aggregate of $23.7 million in proceeds upon exercises of stock options and sales pursuant to the ESPP.

Stock Repurchase Programs—In March 2011, the Company’s Board of Directors approved a stock repurchase program, pursuant to which the Company is authorized to repurchase up to $1.5 billion of its common stock (the “2011 Buyback”). In December 2017, the Board of Directors approved an additional stock repurchase program, pursuant to which the Company is authorized to repurchase up to $2.0 billion of its common stock (the “2017 Buyback,” and, together with the 2011 Buyback, the “Buyback Programs”).

Under the Buyback Programs, the Company is authorized to purchase shares from time to time through open market purchases, in privately negotiated transactions not to exceed market prices, and (with respect to such open market purchases) pursuant to plans adopted in accordance with Rule 10b5-1 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), in accordance with securities laws and other legal requirements and subject to market conditions and other factors.

During the six months ended June 30, 2024, there were no repurchases under either of the Buyback Programs. As of June 30, 2024, the Company has repurchased a total of 14,451,325 shares of its common stock under the 2011 Buyback for an aggregate of $1.5 billion, including commissions and fees. As of June 30, 2024, the Company has not made any repurchases under the 2017 Buyback.

The Company expects to fund any further repurchases of its common stock through a combination of cash on hand, cash generated by operations and borrowings under its credit facilities. Repurchases under the Buyback Programs are subject to, among other things, the Company having available cash to fund the repurchases.

21

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED AND CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(tabular amounts in millions, unless otherwise noted)

Distributions—During the six months ended June 30, 2024, the Company declared or paid the following cash distributions (per share data reflects actual amounts):

Declaration Date	Payment Date	Record Date	Distribution per share		Aggregate Payment Amount (1)
Common Stock
May 23, 2024	July 12, 2024	June 14, 2024	$	1.62	$	756.7
March 14, 2024	April 26, 2024	April 12, 2024	$	1.62	$	756.5
December 13, 2023	February 1, 2024	December 28, 2023	$	1.70	$	792.7

_______________

(1)Does not include amounts accrued for distributions payable related to unvested restricted stock units.

During the six months ended June 30, 2023, the Company declared or paid the following cash distributions (per share data reflects actual amounts):

Declaration Date	Payment Date	Record Date	Distribution per share		Aggregate Payment Amount (1)
Common Stock
May 24, 2023	July 10, 2023	June 16, 2023	$	1.57	$	731.8
March 8, 2023	April 28, 2023	April 14, 2023	$	1.56	$	727.0
December 7, 2022	February 2, 2023	December 28, 2022	$	1.56	$	726.3

_______________

(1)Does not include amounts accrued for distributions payable related to unvested restricted stock units.

The Company accrues distributions on unvested restricted stock units, which are payable upon vesting. As of June 30, 2024, the amount accrued for distributions payable related to unvested restricted stock units was $18.0 million. During the six months ended June 30, 2024 and 2023, the Company paid $10.0 million and $7.3 million of distributions upon the vesting of restricted stock units, respectively. To maintain its qualification for taxation as a REIT, the Company expects to continue paying distributions, the amount, timing and frequency of which will be determined, and subject to adjustment, by the Company’s Board of Directors.

11.    NONCONTROLLING INTERESTS

European Interests—As of June 30, 2024, ATC Europe consists of the Company’s operations in France, Germany and Spain. The Company currently holds a 52% controlling interest in ATC Europe, with Caisse de dépôt et placement du Québec (“CDPQ”) and Allianz insurance companies and funds managed by Allianz Capital Partners GmbH, including the Allianz European Infrastructure Fund (collectively, “Allianz”) holding 30% and 18% noncontrolling interests, respectively. ATC Europe holds a 100% interest in the subsidiaries that consist of the Company’s operations in France and an 87% and an 83% controlling interest in the subsidiaries that consist of the Company’s operations in Germany and Spain, respectively, with PGGM holding a 13% and a 17% noncontrolling interest in each respective subsidiary.

Bangladesh Partnership—In 2021, the Company acquired a 51% controlling interest in Kirtonkhola Tower Bangladesh Limited (“KTBL”) for 900 million Bangladeshi Taka (approximately $10.6 million at the date of closing). Confidence Group holds a 49% noncontrolling interest in KTBL.

Stonepeak Transaction—In 2022, the Company entered into agreements pursuant to which certain investment vehicles affiliated with Stonepeak Partners LP (such investment vehicles, collectively, “Stonepeak”) acquired a noncontrolling ownership interest in the Company’s U.S. data center business for total aggregate consideration of $3.1 billion, through an investment in common equity and mandatorily convertible preferred equity (the “Stonepeak Transaction”).

As of June 30, 2024, the Company holds a common equity interest of approximately 72% in its U.S. data center business, with Stonepeak holding approximately 28% of the outstanding common equity and 100% of the outstanding mandatorily convertible preferred equity. On a fully converted basis, which is expected to occur four years from August 2022, and on the basis of the currently outstanding equity, the Company will hold a controlling ownership interest of approximately 64%, with Stonepeak holding approximately 36%. The mandatorily convertible preferred equity, which accrues dividends at 5.0%, will convert into common equity on a one for one basis, subject to adjustment that will be measured upon conversion.

22

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED AND CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(tabular amounts in millions, unless otherwise noted)

Dividends to noncontrolling interests—Certain of the Company’s subsidiaries may, from time to time, declare dividends. During the six months ended June 30, 2024, the Company’s U.S. data center business declared distributions of $23.0 million related to the outstanding Stonepeak mandatorily convertible preferred equity (the “Stonepeak Preferred Distributions”). As of June 30, 2024, the amount accrued for Stonepeak Preferred Distributions was $11.5 million.

Beginning in January 2024, pursuant to the terms of the ownership agreement with Stonepeak, on a quarterly basis, the Company’s U.S. data center business will distribute common dividends to the Company and to Stonepeak in proportion to their respective equity interests in the Company’s U.S. data center business (the “Stonepeak Common Dividend”). During the six months ended June 30, 2024, the Company’s U.S. data center business made distributions of $91.7 million related to the Stonepeak Common Dividend for the period from the initial closing of the Stonepeak Transaction in August 2022 through December 31, 2023, which was accrued for as of December 31, 2023. The $91.7 million distribution during the six months ended June 30, 2024 included a noncash distribution of $37.5 million made in lieu of a common equity contribution from Stonepeak. Additionally, during the three months ended June 30, 2024, the Company’s U.S. data center business declared and paid distributions of $13.0 million related to the Stonepeak Common Dividend.

During the six months ended June 30, 2024, pursuant to the terms of the ownership agreements, ATC Europe C.V., one of the Company’s subsidiaries in the Netherlands, declared and paid a dividend of 170.0 million EUR (approximately $183.2 million at the date of payment), pursuant to the terms of the ownership agreements, to the Company, CDPQ and Allianz in proportion to their respective equity interests in ATC Europe C.V.

During the six months ended June 30, 2024, pursuant to the terms of the ownership agreements, AT Rhine C.V., one of the Company’s subsidiaries in Germany, declared and paid a dividend of 45.0 million EUR (approximately $48.6 million at the date of payment), pursuant to the terms of the ownership agreements, to ATC Europe and PGGM in proportion to their respective equity interests in AT Rhine C.V.

During the six months ended June 30, 2024, pursuant to the terms of the ownership agreements, AT Iberia C.V., one of the Company’s subsidiaries in Spain, declared and paid a dividend of 22.4 million EUR (approximately $24.0 million at the date of payment), pursuant to the terms of the ownership agreements, to ATC Europe and PGGM in proportion to their respective equity interests in AT Iberia C.V.

During the six months ended June 30, 2024, pursuant to the terms of the ownership agreements, AT Iberia C.V. also declared and paid a dividend of 70.0 million EUR (approximately $74.9 million at the date of payment), pursuant to the terms of the ownership agreements, to ATC Europe and PGGM in proportion to their respective equity interests in AT Iberia C.V. The distribution included a noncash distribution to PGGM of $12.4 million made in lieu of a contribution from PGGM.

The changes in noncontrolling interests were as follows:

	Six Months Ended June 30,
	2024		2023
Balance as of January 1,	$	6,667.2	$	6,836.1
Net income (loss) attributable to noncontrolling interests	12.4		(35.0)
Foreign currency translation adjustment attributable to noncontrolling interests, net of tax	(119.7)		60.8
Contributions from noncontrolling interest holders (1)	152.4		10.5
Distributions to noncontrolling interest holders	(144.8)		(31.6)
Balance as of June 30,	$	6,567.5	$	6,840.8

_______________

(1)Six months ended June 30, 2024, includes contributions from Stonepeak of $137.3 million, including a noncash contribution of $37.5 million made in lieu of Stonepeak’s receipt of the Stonepeak Common Dividend and a noncash contribution from PGGM of $12.4 million made in lieu of PGGM’s receipt of a distribution.

23

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED AND CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(tabular amounts in millions, unless otherwise noted)

12.    EARNINGS PER COMMON SHARE

The following table sets forth basic and diluted net income per common share computational data (shares in thousands, except per share data):

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Net income attributable to American Tower Corporation common stockholders	$	900.3	$	475.7	$	1,817.7	$	811.5
Basic weighted average common shares outstanding	467,038		466,087		466,778		465,915
Dilutive securities	743		892		1,015		1,024
Diluted weighted average common shares outstanding	467,781		466,979		467,793		466,939
Basic net income attributable to American Tower Corporation common stockholders per common share	$	1.93	$	1.02	$	3.89	$	1.74
Diluted net income attributable to American Tower Corporation common stockholders per common share	$	1.92	$	1.02	$	3.89	$	1.74

Shares Excluded From Dilutive Effect—The following shares were not included in the computation of diluted earnings per share because the effect would be anti-dilutive (in thousands, on a weighted average basis):

	Three Months Ended June 30,		Six Months Ended June 30,
	2024	2023	2024	2023
Restricted stock units	646	374	287	5

13.    COMMITMENTS AND CONTINGENCIES

Litigation—The Company periodically becomes involved in various claims, lawsuits and proceedings that are incidental to its business. In the opinion of Company management, after consultation with counsel, there are no matters currently pending that would, in the event of an adverse outcome, materially impact the Company’s consolidated financial position, results of operations or liquidity.

Verizon Transaction—In March 2015, the Company entered into an agreement with various operating entities of Verizon Communications Inc. (“Verizon”) that currently provides for the lease, sublease or management of approximately 11,200 wireless communications sites, which commenced on March 27, 2015. The average term of the lease or sublease for all communications sites at the inception of the agreement was approximately 28 years, assuming renewals or extensions of the underlying ground leases for the sites. The Company has the option to purchase the leased sites in tranches, subject to the applicable lease, sublease or management rights upon its scheduled expiration. Each tower is assigned to an annual tranche, ranging from 2034 to 2047, which represents the outside expiration date for the sublease rights to the towers in that tranche. The purchase price for each tranche is a fixed amount stated in the lease for such tranche plus the fair market value of certain alterations made to the related towers. The aggregate purchase option price for the towers leased and subleased is approximately $5.0 billion. Verizon will occupy the sites as a tenant for an initial term of ten years with eight optional successive five-year terms; each such term shall be governed by standard master lease agreement terms established as a part of the transaction.

AT&T Transaction—The Company has an agreement with SBC Communications Inc., a predecessor entity to AT&T Inc. (“AT&T”), that currently provides for the lease or sublease of approximately 1,800 towers, which commenced between December 2000 and August 2004. Substantially all of the towers are part of the Trust Securitizations. The average term of the lease or sublease for all sites at the inception of the agreement was approximately 27 years, assuming renewals or extensions of the underlying ground leases for the sites. The Company has the option to purchase the sites subject to the applicable lease or sublease upon its expiration. Each tower is assigned to an annual tranche, ranging from 2013 to 2032, which represents the outside expiration date for the sublease rights to that tower. The purchase price for each site is a fixed amount stated in the lease for that site plus the fair market value of certain alterations made to the related tower by AT&T. As of June 30, 2024, the Company has purchased an aggregate of approximately 600 of the subleased towers which are subject to the applicable agreement. The aggregate purchase option price for the remaining towers leased and subleased is $1.1 billion and includes per annum accretion through the applicable expiration of the lease or sublease of a site. For all such sites, AT&T has the right to continue to lease the reserved space through June 30, 2025 at the then-current monthly fee, which shall escalate in accordance with the standard master lease agreement for the

24

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED AND CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(tabular amounts in millions, unless otherwise noted)

remainder of AT&T’s tenancy. Thereafter, AT&T shall have the right to renew such lease for up to five successive five-year terms.

Other Contingencies—The Company is subject to income tax and other taxes in the geographic areas where it holds assets or operates, and periodically receives notifications of audits, assessments or other actions by taxing authorities. Taxing authorities may issue notices or assessments while audits are being conducted. In certain jurisdictions, taxing authorities may issue assessments with minimal examination. These notices and assessments do not represent amounts that the Company is obligated to pay and are often not reflective of the actual tax liability for which the Company will ultimately be liable. In the process of responding to assessments of taxes that the Company believes are not enforceable, the Company avails itself of both administrative and judicial remedies. The Company evaluates the circumstances of each notification or assessment based on the information available and, in those instances in which the Company does not anticipate a successful defense of positions taken in its tax filings, a liability is recorded in the appropriate amount based on the underlying assessment.

14.    BUSINESS SEGMENTS

Property

Communications Sites and Related Communications Infrastructure—The Company’s primary business is leasing space on multitenant communications sites to wireless service providers, radio and television broadcast companies, wireless data providers, government agencies and municipalities and tenants in a number of other industries. The Company has historically reported these operations on a geographic basis.

Data Centers—The Company’s Data Centers segment relates to data center facilities and related assets that the Company owns and operates in the United States. The Data Centers segment offers different types of leased land and related services from, and requires different resources, skill sets and marketing strategies than the existing property operating segment in the U.S. & Canada.

As of June 30, 2024, the Company’s property operations consisted of the following:

•U.S. & Canada: property operations in Canada and the United States;

•Asia-Pacific: property operations in Australia, Bangladesh, India, New Zealand and the Philippines;

•Africa: property operations in Burkina Faso, Ghana, Kenya, Niger, Nigeria, South Africa and Uganda;

•Europe: property operations in France, Germany and Spain;

•Latin America: property operations in Argentina, Brazil, Chile, Colombia, Costa Rica, Mexico, Paraguay and Peru; and

•Data Centers: data center property operations in the United States.

Services

The Company’s Services segment offers tower-related services in the United States, including AZP, structural and mount analyses, and construction management, which primarily support its site leasing business, including the addition of new tenants and equipment on its communications sites. The Services segment is a strategic business unit that offers different services from, and requires different resources, skill sets and marketing strategies than, the property operating segments.

The accounting policies applied in compiling segment information below are similar to those described in note 1 to the Company’s consolidated financial statements included in the 2023 Form 10-K and as updated in note 1 above. Among other factors, in evaluating financial performance in each business segment, management uses segment gross margin and segment operating profit. The Company defines segment gross margin as segment revenue less segment operating expenses excluding Depreciation, amortization and accretion; Selling, general, administrative and development expense; and Other operating expenses. The Company defines segment operating profit as segment gross margin less Selling, general, administrative and development expense attributable to the segment, excluding stock-based compensation expense and corporate expenses. These measures of segment gross margin and segment operating profit are also before Interest income, Interest expense, Gain (loss) on retirement of long-term obligations, Other income (expense), Net income (loss) attributable to noncontrolling interests and Income tax benefit (provision). The categories of expenses indicated above, such as depreciation, have been excluded from segment operating performance as they are not considered in the review of information or the evaluation of results by management. There are no significant revenues resulting from transactions between the Company’s operating segments. All intercompany transactions are eliminated to reconcile segment results and assets to the consolidated statements of operations and consolidated balance sheets.

25

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED AND CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(tabular amounts in millions, unless otherwise noted)

Summarized financial information concerning the Company’s reportable segments for the three and six months ended June 30, 2024 and 2023 is shown in the following tables. The “Other” column (i) represents amounts excluded from specific segments, such as business development operations, stock-based compensation expense and corporate expenses included in Selling, general, administrative and development expense; Other operating expenses; Interest income; Interest expense; Gain (loss) on retirement of long-term obligations; and Other income (expense), and (ii) reconciles segment operating profit to Income from continuing operations before income taxes.

	Property												Total  Property		Services		Other		Total
Three Months Ended June 30, 2024	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers
Segment revenues	$	1,315.4	$	360.9	$	293.9	$	203.2	$	448.7	$	230.8	$	2,852.9	$	47.4			$	2,900.3
Segment operating expenses	220.6		174.0		96.4		73.2		136.4		99.3		799.9		22.0				821.9
Segment gross margin	1,094.8		186.9		197.5		130.0		312.3		131.5		2,053.0		25.4				2,078.4
Segment selling, general, administrative and development expense (1)	40.2		16.2		15.4		15.4		21.7		18.9		127.8		4.6				132.4
Segment operating profit	$	1,054.6	$	170.7	$	182.1	$	114.6	$	290.6	$	112.6	$	1,925.2	$	20.8			$	1,946.0
Stock-based compensation expense																	$	46.3	46.3
Other selling, general, administrative and development expense																	55.6		55.6
Depreciation, amortization and accretion																	561.7		561.7
Other expense (2)																	254.0		254.0
Income from continuing operations before income taxes																			$	1,028.4
Total assets	$	26,867.3	$	3,702.0	$	4,019.8	$	11,568.2	$	8,481.1	$	10,479.4	$	65,117.8	$	73.8	$	646.2	$	65,837.8

_______________

(1)Segment selling, general, administrative and development expenses exclude stock-based compensation expense of $46.3 million.

(2)Primarily includes interest expense and losses from foreign currency exchange rate fluctuations, partially offset by a gain of $46.4 million on the sales of the VIL Shares and the VIL OCDs and an unrealized gain from equity securities of $40.7 million.

26

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED AND CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(tabular amounts in millions, unless otherwise noted)

	Property												Total  Property		Services		Other		Total
Three Months Ended June 30, 2023	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers
Segment revenues	$	1,303.2	$	261.7	$	321.2	$	198.2	$	439.4	$	204.9	$	2,728.6	$	43.1			$	2,771.7
Segment operating expenses	216.9		179.6		112.8		77.3		139.8		83.7		810.1		17.2				827.3
Segment gross margin	1,086.3		82.1		208.4		120.9		299.6		121.2		1,918.5		25.9				1,944.4
Segment selling, general, administrative and development expense (1)	41.7		17.4		18.7		15.1		23.5		18.6		135.0		5.3				140.3
Segment operating profit	$	1,044.6	$	64.7	$	189.7	$	105.8	$	276.1	$	102.6	$	1,783.5	$	20.6			$	1,804.1
Stock-based compensation expense																	$	49.4	49.4
Other selling, general, administrative and development expense																	54.7		54.7
Depreciation, amortization and accretion																	764.6		764.6
Other expense (2)																	460.7		460.7
Income from continuing operations before income taxes																			$	474.7
Total assets	$	26,595.2	$	3,941.7	$	4,180.6	$	11,659.8	$	9,229.1	$	10,549.7	$	66,156.1	$	102.9	$	620.0	$	66,879.0

_______________

(1)Segment selling, general, administrative and development expenses exclude stock-based compensation expense of $49.4 million.

(2)Primarily includes interest expense and losses from foreign currency exchange rate fluctuations. Three months ended June 30, 2023 also includes $37.5 million in impairment charges.

27

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED AND CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(tabular amounts in millions, unless otherwise noted)

	Property												Total  Property		Services		Other		Total
Six Months Ended June 30, 2024	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers
Segment revenues	$	2,626.1	$	687.5	$	585.9	$	407.7	$	894.2	$	455.4	$	5,656.8	$	77.6			$	5,734.4
Segment operating expenses	424.9		344.7		189.1		146.7		276.7		192.2		1,574.3		35.9				1,610.2
Segment gross margin	2,201.2		342.8		396.8		261.0		617.5		263.2		4,082.5		41.7				4,124.2
Segment selling, general, administrative and development expense (1)	76.8		29.0		30.3		31.2		49.5		36.1		252.9		9.5				262.4
Segment operating profit	$	2,124.4	$	313.8	$	366.5	$	229.8	$	568.0	$	227.1	$	3,829.6	$	32.2			$	3,861.8
Stock-based compensation expense																	$	111.2	111.2
Other selling, general, administrative and development expense																	117.7		117.7
Depreciation, amortization and accretion																	1,111.1		1,111.1
Other expense (2)																	462.5		462.5
Income from continuing operations before income taxes																			$	2,059.3

_______________

(1)Segment selling, general, administrative and development expenses exclude stock-based compensation expense of $111.2 million.

(2)Primarily includes interest expense, partially offset by gains from foreign currency exchange rate fluctuations, a gain of $46.4 million on the sales of the VIL Shares and the VIL OCDs and an unrealized gain from equity securities of $26.0 million.

28

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED AND CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(tabular amounts in millions, unless otherwise noted)

	Property												Total  Property		Services		Other		Total
Six Months Ended June 30, 2023	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers
Segment revenues	$	2,590.8	$	512.8	$	638.2	$	389.9	$	903.5	$	407.9	$	5,443.1	$	95.8			$	5,538.9
Segment operating expenses	422.2		348.0		231.3		150.4		277.7		167.5		1,597.1		36.3				1,633.4
Segment gross margin	2,168.6		164.8		406.9		239.5		625.8		240.4		3,846.0		59.5				3,905.5
Segment selling, general, administrative and development expense (1)	82.5		26.2		40.1		29.7		53.2		36.1		267.8		11.0				278.8
Segment operating profit	$	2,086.1	$	138.6	$	366.8	$	209.8	$	572.6	$	204.3	$	3,578.2	$	48.5			$	3,626.7
Stock-based compensation expense																	$	114.9	114.9
Other selling, general, administrative and development expense																	114.6		114.6
Depreciation, amortization and accretion																	1,558.7		1,558.7
Other expense (2)																	995.4		995.4
Income from continuing operations before income taxes																			$	843.1

_______________

(1)Segment selling, general, administrative and development expenses exclude stock-based compensation expense of $114.9 million.

(2)Primarily includes interest expense and losses from foreign currency exchange rate fluctuations. Six months ended June 30, 2023 also includes a net loss on the sales of one of the Company’s subsidiaries in Mexico that held fiber assets and the Company’s subsidiary in Poland of $78.9 million and $67.3 million in impairment charges.

29

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

This Quarterly Report on Form 10-Q (this “Quarterly Report”) contains statements about future events and expectations, or “forward-looking statements,” which relate to our goals, beliefs, strategies, plans or current expectations and other statements that are not of historical facts. For example, when we use words such as “project,” “plan,” “believe,” “anticipate,” “expect,” “forecast,” “estimate,” “intend,” “should,” “would,” “could,” “may” or other words that convey uncertainty of future events or outcomes, we are making forward-looking statements. Certain important factors may cause actual results to differ materially from those indicated by our forward-looking statements, including those factors set forth under the caption “Risk Factors” in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2023 (the “2023 Form 10-K”). Forward-looking statements represent management’s current expectations, beliefs and assumptions, and are inherently uncertain. We do not undertake any obligation to update our forward-looking statements.

The discussion and analysis of our financial condition and results of operations that follow are based upon our consolidated and condensed consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”). The preparation of our financial statements requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities, revenues and expenses, and the related disclosure of contingent assets and liabilities at the date of our financial statements. Actual results may differ from these estimates and such differences could be material to the financial statements. This discussion should be read in conjunction with our consolidated and condensed consolidated financial statements herein and the accompanying notes, information set forth under the caption “Critical Accounting Policies and Estimates” in the 2023 Form 10-K, and in particular, the information set forth therein under Item 7 “Management’s Discussion and Analysis of Financial Condition and Results of Operations.”

Overview

We are one of the largest global real estate investment trusts and a leading independent owner, operator and developer of multitenant communications real estate. Our primary business is the leasing of space on communications sites to wireless service providers, radio and television broadcast companies, wireless data providers, government agencies and municipalities and tenants in a number of other industries. In addition to the communications sites in our portfolio, we manage rooftop and tower sites for property owners under various contractual arrangements. We also hold other telecommunications infrastructure and property interests that we lease primarily to communications service providers and third-party tower operators, and, as discussed further below, we hold a portfolio of highly interconnected data center facilities and related assets in the United States. Our customers include our tenants, licensees and other payers. We refer to the business encompassing the above as our property operations, which accounted for 98% and 99% of our total revenues for the three and six months ended June 30, 2024, respectively, and includes our U.S. & Canada property, Asia-Pacific property, Africa property, Europe property and Latin America property segments and Data Centers segment.

We also offer tower-related services in the United States, including site application, zoning and permitting, structural and mount analyses, and construction management, which primarily support our site leasing business, including the addition of new tenants and equipment on our sites.

30

The following table details the number of communications sites, excluding managed sites, that we owned or operated as of June 30, 2024: 

	Number of Owned Towers	Number of Operated  Towers (1)	Number of Owned DAS Sites
U.S. & Canada:
Canada	225	—	—
United States	26,830	15,069	440
U.S. & Canada total	27,055	15,069	440
Asia-Pacific: (2)
Bangladesh	729	—	—
India (3)	75,286	—	756
Philippines	360	—	—
Asia-Pacific total	76,375	—	756
Africa:
Burkina Faso	731	—	—
Ghana	3,478	—	37
Kenya	4,087	—	11
Niger	916	—	—
Nigeria	8,486	—	—
South Africa	2,591	—	—
Uganda	4,249	—	19
Africa total	24,538	—	67
Europe:
France	4,122	303	9
Germany	15,059	—	—
Spain	11,997	—	1
Europe total	31,178	303	10
Latin America:
Argentina	499	—	11
Brazil	20,526	2,021	123
Chile	3,712	—	110
Colombia	4,958	—	6
Costa Rica	709	—	2
Mexico	9,408	186	92
Paraguay	1,453	—	—
Peru	3,975	450	1
Latin America total	45,240	2,657	345

_______________

(1)Approximately 98% of the operated towers are held pursuant to long-term finance leases, including those subject to purchase options.

(2)We also control land under carrier or other third-party communications sites in Australia and New Zealand, which provide recurring cash flows through tenant leasing arrangements.

(3)In January 2024, we entered into the Pending ATC TIPL Transaction (as defined and further discussed below).

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As of June 30, 2024, our property portfolio included 28 operating data center facilities across ten markets in the United States that collectively comprise approximately 3.3 million net rentable square feet (“NRSF”) of data center space, as follows:

	Number of Data Centers	Total NRSF (1)
		(in thousands)
San Francisco Bay, CA	8	939
Los Angeles, CA	3	724
Northern Virginia, VA	5	586
New York, NY	2	285
Chicago, IL	2	216
Boston, MA	1	143
Orlando, FL	1	126
Miami, FL	2	115
Atlanta, GA	2	95
Denver, CO	2	37
Total	28	3,266

_______________

(1)Excludes approximately 0.4 million of office and light industrial NRSF.

We operate in seven reportable segments: U.S. & Canada property, Asia-Pacific property, Africa property, Europe property, Latin America property, Data Centers and Services. In evaluating operating performance in each business segment, management uses, among other factors, segment gross margin and segment operating profit (see note 14 to our consolidated and condensed consolidated financial statements included in this Quarterly Report).

The 2023 Form 10-K contains information regarding management’s expectations of long-term drivers of demand for our communications sites, as well as key trends, which management believes provide valuable insight into our operating and financial resource allocation decisions. The discussion below should be read in conjunction with the 2023 Form 10-K and, in particular, the information set forth therein under Item 7 “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Executive Overview.”

In most of our markets, our tenant leases for our communications sites with wireless carriers generally have initial non-cancellable terms of five to ten years with multiple renewal terms. Accordingly, the vast majority of the revenue generated by our property operations during the six months ended June 30, 2024 was recurring revenue that we should continue to receive in future periods. Most of our tenant leases for our communications sites have provisions that periodically increase or “escalate” the rent due under the lease, typically based on (a) an annual fixed escalation (averaging approximately 3% in the United States), (b) an inflationary index in most of our international markets, or (c) a combination of both. In addition, certain of our tenant leases provide for additional revenue primarily to cover costs (pass-through revenue), such as ground rent or power and fuel costs.

Based upon existing customer leases and foreign currency exchange rates as of June 30, 2024, we expect to generate over $57 billion of non-cancellable customer lease revenue over future periods, before the impact of straight-line lease accounting.

Following the rulings by the Supreme Court of India regarding carriers’ obligations for the adjusted gross revenue fees and charges prescribed by the court, we have experienced variability and a level of uncertainty in collections in India. As further discussed in Item 1A of the 2023 Form 10-K under the caption “Risk Factors—A substantial portion of our current and projected future revenue is derived from a small number of customers, and we are sensitive to adverse changes in the creditworthiness and financial strength of our customers,” in the third quarter of 2022, one of our customers in India, Vodafone Idea Limited (“VIL”), communicated that it would make partial payments of its contractual amounts owed to us (the “VIL Shortfall”). We recorded reserves in late 2022 and the first half of 2023 for the VIL Shortfall. In the second half of 2023, VIL began making payments in full of its monthly contractual obligations owed to us.

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In February 2023, and as amended in August 2023, VIL issued optionally convertible debentures (the “VIL OCDs”) to our subsidiary, ATC Telecom Infrastructure Private Limited (“ATC TIPL”), in exchange for VIL’s payment of certain amounts towards accounts receivables. The VIL OCDs were (a) to be repaid by VIL with interest or (b) convertible into equity of VIL. If converted and following registration, such equity shall be free to trade in the open market beginning on the one year anniversary of the date of issuance of the VIL OCDs. The VIL OCDs were issued for an aggregate face value of 16.0 billion Indian Rupees (“INR”) (approximately $193.2 million on the date of issuance). The fair value of the VIL OCDs at issuance was approximately $116.5 million.

On March 23, 2024, we converted an aggregate face value of 14.4 billion INR (approximately $172.7 million) of VIL OCDs into 1,440 million shares of equity of VIL (the “VIL Shares”).

On April 29, 2024, we completed the sale of 1,440 million VIL Shares at a price of 12.78 INR per share. The net proceeds for this transaction were approximately 18.0 billion INR (approximately $216.0 million at the date of settlement) after deducting commissions and fees.

On June 5, 2024, we completed the sale of the remaining aggregate face value of 1.6 billion INR (approximately $19.2 million) of the VIL OCDs. The net proceeds for this transaction, excluding accrued interest, were approximately 1.8 billion INR (approximately $22.0 million at the date of settlement) after deducting fees. As of June 30, 2024, none of the VIL Shares or the VIL OCDs remained outstanding.

In 2023, we initiated a strategic review of our India business, where we evaluated our exposure to the India market within our global portfolio of communications assets, and assessed opportunities to repurpose capital to drive long-term shareholder value and sustained growth. The strategic review concluded in January 2024 with our signed agreement with DIT for the Pending ATC TIPL Transaction (each as defined below). During the process, and based on information gathered therein, we updated our estimate on the fair value of the India reporting unit and determined that the carrying value exceeded fair value. As a result, we recorded a goodwill impairment charge of $322.0 million in the third quarter of 2023.

On January 4, 2024, through our subsidiaries, ATC Asia Pacific Pte. Ltd. and ATC TIPL, which holds our operations in India, we entered into an agreement with Data Infrastructure Trust (“DIT”), an infrastructure investment trust sponsored by an affiliate of Brookfield Asset Management, pursuant to which DIT will acquire a 100% ownership interest in ATC TIPL (the “Pending ATC TIPL Transaction”). Subject to certain pre-closing terms, total aggregate consideration would potentially represent up to approximately 210 billion Indian Rupees (“INR”) (approximately $2.5 billion), including the value of the VIL OCDs and the VIL Shares, payments on certain existing customer receivables, the repayment of existing intercompany debt and the repayment, or assumption, of our existing term loan in India, by DIT. During the six months ended June 30, 2024, we sold the VIL Shares and the remaining VIL OCDs (each as discussed in note 7 to our consolidated and condensed consolidated financial statements included in this Quarterly Report) and ATC TIPL distributed approximately 27.2 billion INR (approximately $325.9 million) to us. ATC TIPL expects to make a final distribution of approximately 2.4 billion INR (approximately $28.5 million), which includes the satisfaction of the economic benefit associated with the rights to payments on certain existing customer receivables. Each such distribution will be deducted from the total aggregate consideration to be received by us at closing. The Pending ATC TIPL Transaction is expected to close in the second half of 2024, subject to customary closing conditions, including government and regulatory approval.

We will continue to evaluate the carrying value of our Indian assets, which may result in the realization of additional impairment expense or other similar charges. For more information, please see our discussion below under the caption “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Critical Accounting Policies and Estimates” included in this Quarterly Report.

The revenues generated by our property operations may be affected by cancellations of existing tenant leases. As discussed above, most of our tenant leases with wireless carriers and broadcasters are multiyear contracts, which typically are non-cancellable; however, in some instances, a lease may be cancelled upon the payment of a termination fee. Revenue lost from either tenant lease cancellations or the non-renewal of leases or rent renegotiations, which we refer to as churn, has historically not had a material adverse effect on the revenues generated by our consolidated property operations. During the six months ended June 30, 2024, churn was approximately 2% of our tenant billings, primarily driven by churn in our U.S. & Canada property segment, as discussed below.

We expect that our churn rate in our U.S. & Canada property segment will remain elevated through 2025 due to contractual lease cancellations and non-renewals by T-Mobile, including legacy Sprint Corporation leases, pursuant to the terms of our master lease agreement with T-Mobile US, Inc. entered into in September 2020.

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Non-GAAP Financial Measures

Included in our analysis of our results of operations are discussions regarding earnings before interest, taxes, depreciation, amortization and accretion, as adjusted (“Adjusted EBITDA”), Funds From Operations, as defined by the National Association of Real Estate Investment Trusts (“Nareit FFO”) attributable to American Tower Corporation common stockholders and Adjusted Funds From Operations (“AFFO”) attributable to American Tower Corporation common stockholders (“AFFO attributable to American Tower Corporation common stockholders”).

We define Adjusted EBITDA as Net income before Income (loss) from equity method investments; Income tax benefit (provision); Other income (expense); Gain (loss) on retirement of long-term obligations; Interest expense; Interest income; Other operating income (expense), including Goodwill impairment; Depreciation, amortization and accretion; and stock-based compensation expense.

Nareit FFO attributable to American Tower Corporation common stockholders is defined as net income before gains or losses from the sale or disposal of real estate, real estate related impairment charges, real estate related depreciation, amortization and accretion including adjustments and distributions for unconsolidated affiliates and noncontrolling interests. In this section, we refer to Nareit FFO attributable to American Tower Corporation common stockholders as “Nareit FFO (common stockholders).”

We define AFFO attributable to American Tower Corporation common stockholders as Nareit FFO (common stockholders) before (i) straight-line revenue and expense; (ii) stock-based compensation expense; (iii) the deferred portion of income tax and other income tax adjustments; (iv) non-real estate related depreciation, amortization and accretion; (v) amortization of deferred financing costs, debt discounts and premiums and long-term deferred interest charges; (vi) other income (expense); (vii) gain (loss) on retirement of long-term obligations; and (viii) other operating income (expense); less cash payments related to capital improvements and cash payments related to corporate capital expenditures and including adjustments and distributions for unconsolidated affiliates and noncontrolling interests, which includes the impact of noncontrolling interests on both Nareit FFO and the corresponding adjustments included in AFFO. In this section, we refer to AFFO attributable to American Tower Corporation common stockholders as “AFFO (common stockholders).”

Adjusted EBITDA, Nareit FFO (common stockholders) and AFFO (common stockholders) are not intended to replace net income or any other performance measures determined in accordance with GAAP. None of Adjusted EBITDA, Nareit FFO (common stockholders) or AFFO (common stockholders) represents cash flows from operating activities in accordance with GAAP and, therefore, these measures should not be considered indicative of cash flows from operating activities, as a measure of liquidity or a measure of funds available to fund our cash needs, including our ability to make cash distributions. Rather, Adjusted EBITDA, Nareit FFO (common stockholders) and AFFO (common stockholders) are presented as we believe each is a useful indicator of our current operating performance. We believe that these metrics are useful to an investor in evaluating our operating performance because (1) each is a key measure used by our management team for decision making purposes and for evaluating our operating segments’ performance; (2) Adjusted EBITDA is a component underlying our credit ratings; (3) Adjusted EBITDA is widely used in the telecommunications real estate sector to measure operating performance as depreciation, amortization and accretion may vary significantly among companies depending upon accounting methods and useful lives, particularly where acquisitions and non-operating factors are involved; (4) AFFO (common stockholders) is widely used in the telecommunications real estate sector to adjust Nareit FFO (common stockholders) for items that may otherwise cause material fluctuations in Nareit FFO (common stockholders) growth from period to period that would not be representative of the underlying performance of property assets in those periods; (5) each provides investors with a meaningful measure for evaluating our period-to-period operating performance by eliminating items that are not operational in nature; and (6) each provides investors with a measure for comparing our results of operations to those of other companies, particularly those in our industry.

Our measurement of Adjusted EBITDA, Nareit FFO (common stockholders) and AFFO (common stockholders) may not, however, be fully comparable to similarly titled measures used by other companies. Reconciliations of Adjusted EBITDA, Nareit FFO (common stockholders) and AFFO (common stockholders) to net income, the most directly comparable GAAP measure, have been included below.

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Results of Operations

Three and Six Months Ended June 30, 2024 and 2023

(in millions, except percentages)

Revenue

	Three Months Ended June 30,				Percent Increase (Decrease)		Six Months Ended June 30,				Percent Increase (Decrease)
	2024		2023				2024		2023
Property
U.S. & Canada	$	1,315.4	$	1,303.2	1	%	$	2,626.1	$	2,590.8	1	%
Asia-Pacific	360.9		261.7		38		687.5		512.8		34
Africa	293.9		321.2		(8)		585.9		638.2		(8)
Europe	203.2		198.2		3		407.7		389.9		5
Latin America	448.7		439.4		2		894.2		903.5		(1)
Data Centers	230.8		204.9		13		455.4		407.9		12
Total property	2,852.9		2,728.6		5		5,656.8		5,443.1		4
Services	47.4		43.1		10		77.6		95.8		(19)
Total revenues	$	2,900.3	$	2,771.7	5	%	$	5,734.4	$	5,538.9	4	%

Three Months Ended June 30, 2024

U.S. & Canada property segment revenue growth of $12.2 million was attributable to:

• Tenant billings growth of $58.0 million, which was driven by:

• $45.3 million due to leasing additional space on our sites (“colocations”) and amendments; and

• $16.0 million resulting from contractual escalations, net of churn;

• Partially offset by a decrease of $3.3 million from other tenant billings;

•Partially offset by a decrease of $45.8 million in other revenue, which includes a $38.0 million decrease due to straight-line accounting.

Segment revenue growth was not meaningfully impacted by foreign currency translation related to fluctuations in Canadian Dollar (“CAD”).

Asia-Pacific property segment revenue growth of $99.2 million was attributable to:

• An increase of $53.4 million in pass-through revenue, primarily due to the recognition of $35.8 million of previously deferred revenue as compared to reserves taken in the prior year period related to the VIL Shortfall (as discussed above);

• An increase of $46.7 million in other revenue, primarily due to the recognition of $31.7 million of previously deferred revenue as compared to reserves taken in the prior year period related to the VIL Shortfall; and

• Tenant billings growth of $4.1 million, which was driven by:

• $4.4 million due to colocations and amendments;

•$0.8 million from other tenant billings; and

•$0.7 million generated from sites acquired or constructed since the beginning of the prior-year period (“newly acquired or constructed sites”);

•Partially offset by a decrease of $1.8 million resulting from churn in excess of contractual escalations.

Segment revenue growth was partially offset by a decrease of $5.0 million primarily attributable to the negative impact of foreign currency translation related to fluctuations in INR.

Africa property segment revenue decrease of $27.3 million was attributable to:

• A decrease of $49.4 million attributable to the impact of foreign currency translation, which included, among others, negative impacts of $42.6 million related to fluctuations in Nigerian Naira (“NGN”) and $7.1 million

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related to fluctuations in Ghanaian Cedi (“GHS”), offset by positive impacts of $1.3 million related to fluctuations in Kenyan Shilling (“KES”).

• A decrease of $18.9 million in pass-through revenue, primarily due to a decrease in fuel costs;

• Partially offset by:

• Tenant billings growth of $40.0 million, which was driven by:

• $13.6 million due to colocations and amendments;

• $13.4 million generated from newly acquired or constructed sites;

• $12.6 million resulting from contractual escalations, net of churn; and

• $0.4 million from other tenant billings; and

• An increase of $1.0 million in other revenue.

Europe property segment revenue growth of $5.0 million was attributable to:

• Tenant billings growth of $9.5 million, which was driven by:

• $5.0 million due to colocations and amendments;

• $2.8 million resulting from contractual escalations, net of churn; and

• $2.0 million generated from newly acquired or constructed sites;

• Partially offset by a decrease of $0.3 million from other tenant billings; and

• An increase of $0.5 million in other revenue;

• Partially offset by a decrease of $2.9 million in pass-through revenue, primarily due to a decrease in energy costs.

Segment revenue growth was partially offset by a decrease of $2.1 million attributable to the negative impact of foreign currency translation related to fluctuations in Euro (“EUR”).

Latin America property segment revenue growth of $9.3 million was attributable to:

• Tenant billings growth of $7.1 million, which was driven by:

• $7.7 million due to colocations and amendments; and

• $0.5 million generated from newly acquired or constructed sites;

• Partially offset by decreases of:

• $0.6 million from other tenant billings; and

• $0.5 million from churn in excess of contractual escalations; and

• An increase of $4.5 million in pass-through revenue; and

• An increase of $4.3 million in other revenue, primarily attributable to the recognition of previously deferred revenue in Brazil, partially offset by a decrease in tenant settlements in Mexico.

Segment revenue growth was partially offset by a decrease of $6.6 million, attributable to the impact of foreign currency translation, which included, among others, negative impacts of $8.8 million related to fluctuations in Brazilian Real and $4.3 million related to fluctuations in Chilean Peso (“CLP”), offset by positive impacts of $4.1 million related to fluctuations in Mexican Peso (“MXN”) and $3.3 million related to fluctuations in Colombian Peso (“COP”).

Data Centers segment revenue growth of $25.9 million was attributable to:

•An increase of $15.8 million in rental, related and other revenue, primarily due to new lease commencements, customer expansions and rent increases upon customer renewals;

•An increase of $8.9 million in power revenue from new lease commencements, increased power consumption and pricing increases from existing customers; and

•An increase of $3.1 million in interconnection revenue, primarily due to customer interconnection net additions and set-up fees;

•Partially offset by a decrease of $1.9 million in straight-line revenue.

Services segment revenue growth of $4.3 million was primarily attributable to an increase in construction management and structural and mount analyses services, partially offset by a decrease in site application, zoning and permitting services.

Six Months Ended June 30, 2024

U.S. & Canada property segment revenue growth of $35.3 million was attributable to:

• Tenant billings growth of $110.6 million, which was driven by:

• $90.6 million due to colocations and amendments; and

• $26.2 million resulting from contractual escalations, net of churn;

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• Partially offset by a decrease of $6.2 million from other tenant billings;

•Partially offset by a decrease of $75.3 million in other revenue, which includes a $66.0 million decrease due to straight-line accounting.

Segment revenue growth was not meaningfully impacted by foreign currency translation related to fluctuations in CAD.

Asia-Pacific property segment revenue growth of $174.7 million was attributable to:

• An increase of $86.6 million in pass-through revenue, primarily due to the recognition of $45.3 million of previously deferred revenue as compared to reserves taken in the prior year period related to the VIL Shortfall;

• An increase of $84.3 million in other revenue, primarily due to the recognition of $51.5 million of previously deferred revenue as compared to reserves taken in the prior year period related to the VIL Shortfall; and

• Tenant billings growth of $11.8 million, which was driven by:

• $11.4 million due to colocations and amendments;

• $1.9 million generated from newly acquired or constructed sites; and

• $1.8 million from other tenant billings;

• Partially offset by a decrease of $3.3 million resulting from churn in excess of contractual escalations.

Segment revenue growth was partially offset by a decrease of $8.0 million primarily attributable to the negative impact of foreign currency translation related to fluctuations in INR.

Africa property segment revenue decrease of $52.3 million was attributable to:

• A decrease of $99.9 million attributable to the impact of foreign currency translation, which included, among others, negative impacts of $81.2 million related to fluctuations in NGN, $8.6 million related to fluctuations in GHS, $4.7 million related to fluctuations in KES and $2.9 million related to fluctuations in Ugandan Shilling.

• A decrease of $41.4 million in pass-through revenue, primarily due to a decrease in fuel costs;

• Partially offset by:

• Tenant billings growth of $83.3 million, which was driven by:

• $29.0 million due to colocations and amendments;

• $27.9 million generated from newly acquired or constructed sites;

• $25.0 million resulting from contractual escalations, net of churn; and

• $1.4 million from other tenant billings; and

• An increase of $5.7 million in other revenue.

Europe property segment revenue growth of $17.8 million was attributable to:

• Tenant billings growth of $18.3 million, which was driven by:

• $9.5 million due to colocations and amendments;

• $5.5 million resulting from contractual escalations, net of churn; and

• $3.7 million generated from newly acquired or constructed sites;

• Partially offset by a decrease of $0.4 million from other tenant billings; and

• An increase of $1.2 million in other revenue;

• Partially offset by a decrease of $2.2 million in pass-through revenue, primarily due to a decrease in energy costs.

Segment revenue growth included an increase of $0.5 million attributable to the positive impact of foreign currency translation related to fluctuations in EUR.

Latin America property segment revenue decrease of $9.3 million was attributable to:

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• A decrease of $49.6 million in other revenue, primarily attributable to a decrease in tenant settlements in Mexico and the sale of one of our subsidiaries in Mexico that held fiber assets (“Mexico Fiber”) in the prior year period, partially offset by the recognition of previously deferred revenue in Brazil;

• Partially offset by:

• Tenant billings growth of $15.4 million, which was driven by:

• $16.8 million due to colocations and amendments; and

• $1.0 million generated from newly acquired or constructed sites;

• Partially offset by decreases of:

◦$1.7 million from churn in excess of contractual escalations; and

◦$0.7 million from other tenant billings; and

• An increase of $7.7 million in pass-through revenue.

Segment revenue decline was partially offset by an increase of $17.2 million, attributable to the impact of foreign currency translation, which included, among others, positive impacts of $17.4 million related to fluctuations in MXN and $8.6 million related to fluctuations in COP, offset by negative impacts of $8.6 million related to fluctuations in CLP and $0.4 million related to fluctuations in Peruvian Sol.

Data Centers segment revenue growth of $47.5 million was attributable to:

•An increase of $29.4 million in rental, related and other revenue, primarily due to new lease commencements, customer expansions and rent increases upon customer renewals;

•An increase of $16.9 million in power revenue from new lease commencements, increased power consumption and pricing increases from existing customers; and

•An increase of $5.6 million in interconnection revenue, primarily due to customer interconnection net additions and set-up fees;

•Partially offset by a decrease of $4.4 million in straight-line revenue.

Services segment revenue decrease of $18.2 million was primarily attributable to a decrease in site application, zoning and permitting and structural and mount analyses services, partially offset by an increase in construction management services.

Gross Margin

	Three Months Ended June 30,				Percent Increase (Decrease)		Six Months Ended June 30,				Percent Increase (Decrease)
	2024		2023				2024		2023
Property
U.S. & Canada	$	1,094.8	$	1,086.3	1	%	$	2,201.2	$	2,168.6	2	%
Asia-Pacific	186.9		82.1		128		342.8		164.8		108
Africa	197.5		208.4		(5)		396.8		406.9		(2)
Europe	130.0		120.9		8		261.0		239.5		9
Latin America	312.3		299.6		4		617.5		625.8		(1)
Data Centers	131.5		121.2		8		263.2		240.4		9
Total property	2,053.0		1,918.5		7		4,082.5		3,846.0		6
Services	25.4		25.9		(2)	%	41.7		59.5		(30)	%

Three Months Ended June 30, 2024

•The increase in U.S. & Canada property segment gross margin was primarily attributable to the increase in revenue described above, partially offset by an increase in direct expenses of $3.7 million.

•The increase in Asia-Pacific property segment gross margin was primarily attributable to the increase in revenue described above and a decrease in direct expenses of $3.3 million, primarily due to a decrease in property taxes, partially offset by an increase in costs associated with pass-through revenue. Direct expenses also benefited by $2.3 million from the impact of foreign currency translation.

•The decrease in Africa property segment gross margin was primarily attributable to the decrease in revenue described above, partially offset by a decrease in direct expenses of $0.9 million, primarily due to a decrease in

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costs associated with pass-through revenue, including fuel costs, partially offset by increases in repair and maintenance spending. Direct expenses also benefited by $15.5 million from the impact of foreign currency translation.

•The increase in Europe property segment gross margin was primarily attributable to the increase in revenue described above and a decrease in direct expenses of $3.4 million, primarily due to a decrease in costs associated with pass-through revenue, including energy costs. Direct expenses also benefited by $0.7 million from the impact of foreign currency translation.

•The increase in Latin America property segment gross margin was primarily attributable to the increase in revenue described above and a decrease in direct expenses of $1.4 million. Direct expenses also benefited by $2.0 million from the impact of foreign currency translation.

•The increase in Data Centers segment gross margin was primarily attributable to the increase in revenue described above, partially offset by an increase in direct expenses of $15.6 million, primarily due to an increase in costs associated with power revenue, including utility costs.

•The decrease in Services segment gross margin was primarily attributable to an increase in direct expenses of $4.8 million, partially offset by the increase in revenue described above.

Six Months Ended June 30, 2024

•The increase in U.S. & Canada property segment gross margin was primarily attributable to the increase in revenue described above, partially offset by an increase in direct expenses of $2.7 million.

•The increase in Asia-Pacific property segment gross margin was primarily attributable to the increase in revenue described above, partially offset by an increase in direct expenses of $0.6 million, primarily due to an increase in costs associated with pass-through revenue, partially offset a decrease in property taxes. Direct expenses also benefited by $3.9 million from the impact of foreign currency translation.

•The decrease in Africa property segment gross margin was primarily attributable to the decrease in revenue described above, partially offset by a decrease in direct expenses of $12.0 million, primarily due to a decrease in costs associated with pass-through revenue, including fuel costs, partially offset by increases to repair and maintenance spending. Direct expenses also benefited by $30.2 million from the impact of foreign currency translation.

•The increase in Europe property segment gross margin was primarily attributable to the increase in revenue described above and a decrease in direct expenses of $3.9 million, primarily due to a decrease in costs associated with pass-through revenue, including energy costs. Direct expenses were also negatively impacted by $0.2 million from the impact of foreign currency translation.

•The decrease in Latin America property segment gross margin was primarily attributable to the decrease in revenue described, partially offset by a decrease in direct expenses of $6.2 million, including a decrease due to the sale of Mexico Fiber in the prior year period. Direct expenses were also negatively impacted by $5.2 million from the impact of foreign currency translation.

•The increase in Data Centers segment gross margin was primarily attributable to the increase in revenue described above, partially offset by an increase in direct expenses of $24.7 million, primarily due to an increase in costs associated with power revenue, including utility costs.

•The decrease in Services segment gross margin was primarily attributable to the decrease in revenue described above, partially offset by a decrease in direct expenses of $0.4 million.

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Selling, General, Administrative and Development Expense (“SG&A”)

	Three Months Ended June 30,				Percent Increase (Decrease)		Six Months Ended June 30,				Percent Increase (Decrease)
	2024		2023				2024		2023
Property
U.S. & Canada	$	40.2	$	41.7	(4)	%	$	76.8	$	82.5	(7)	%
Asia-Pacific	16.2		17.4		(7)		29.0		26.2		11
Africa	15.4		18.7		(18)		30.3		40.1		(24)
Europe	15.4		15.1		2		31.2		29.7		5
Latin America	21.7		23.5		(8)		49.5		53.2		(7)
Data Centers	18.9		18.6		2		36.1		36.1		0
Total property	127.8		135.0		(5)		252.9		267.8		(6)
Services	4.6		5.3		(13)		9.5		11.0		(14)
Other	101.9		104.1		(2)		228.9		229.5		(0)
Total selling, general, administrative and development expense	$	234.3	$	244.4	(4)	%	$	491.3	$	508.3	(3)	%

Three Months Ended June 30, 2024

•The decreases in our U.S. & Canada and Latin America property segment SG&A and our Services segment SG&A were primarily driven by decreased personnel and related costs and decreased professional services costs.

•The decrease in our Asia-Pacific property segment SG&A was primarily driven by a decrease in bad debt expense and lower canceled construction costs, partially offset by increased professional services costs and increased personnel and related costs to support our business.

•The decrease in our Africa property segment SG&A was primarily driven by a benefit from the impact of foreign currency translation of $3.9 million, partially offset by a net increase in bad debt expense.

•The increase in our Europe property segment SG&A was primarily driven by increased personnel and related costs to support our business, partially offset by decreased professional services costs.

•The increase in our Data Centers segment SG&A was primarily driven by increased personnel and related costs to support our business.

•The decrease in other SG&A was primarily attributable to a decrease in stock-based compensation expense of $3.1 million.

Six Months Ended June 30, 2024

•The decreases in our U.S. & Canada property segment SG&A and our Services segment SG&A were primarily driven by decreased personnel and related costs.

•The increase in our Asia-Pacific property segment SG&A was primarily driven by increased professional services costs and an increase in bad debt expense due to recoveries in the prior year period, partially offset by lower canceled construction costs.

•The decrease in our Africa property segment SG&A was primarily driven by a benefit from the impact of foreign currency translation of $7.9 million and a net decrease in bad debt expense.

•The increase in our Europe property segment SG&A was primarily driven by increased personnel and related costs to support our business, partially offset by decreased professional services costs.

•The decrease in our Latin America property segment SG&A was primarily driven by decreased professional services costs and personnel and related costs, partially offset by the negative impact of foreign currency translation and a net increase in bad debt expense.

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•Our Data Centers segment SG&A did not have a meaningful change as compared to the prior-year period.

•The decrease in other SG&A was primarily attributable to a decrease in stock-based compensation expense of $3.7 million, partially offset by an increase in corporate SG&A, including an increase in personnel and related costs to support our business.

Operating Profit

	Three Months Ended June 30,				Percent Increase (Decrease)		Six Months Ended June 30,				Percent Increase (Decrease)
	2024		2023				2024		2023
Property
U.S. & Canada	$	1,054.6	$	1,044.6	1	%	$	2,124.4	$	2,086.1	2	%
Asia-Pacific	170.7		64.7		164		313.8		138.6		126
Africa	182.1		189.7		(4)		366.5		366.8		(0)
Europe	114.6		105.8		8		229.8		209.8		10
Latin America	290.6		276.1		5		568.0		572.6		(1)
Data Centers	112.6		102.6		10		227.1		204.3		11
Total property	1,925.2		1,783.5		8		3,829.6		3,578.2		7
Services	20.8		20.6		1	%	32.2		48.5		(34)	%

•The increases in operating profit for the three and six months ended June 30, 2024 for our U.S. & Canada property segment were primarily attributable to increases in our segment gross margin and decreases in our segment SG&A.

•The increase in operating profit for the three months ended June 30, 2024 for our Asia-Pacific property segment was primarily attributable to an increase in our segment gross margin and a decrease in our segment SG&A. The increase in operating profit for the six months ended June 30, 2024 for our Asia-Pacific property segment was primarily attributable to an increase in our segment gross margin, partially offset by an increase in our segment SG&A.

•The decreases in operating profit for the three and six months ended June 30, 2024 for our Africa property segment were primarily attributable to decreases in our segment gross margin, partially offset by decreases in our segment SG&A.

•The increases in operating profit for the three and six months ended June 30, 2024 for our Europe property segment were primarily attributable to increases in our segment gross margin, partially offset by increases in our segment SG&A.

•The increase in operating profit for the three months ended June 30, 2024 for our Latin America property segment was primarily attributable to an increase in our segment gross margin and a decrease in our segment SG&A. The decrease in operating profit for the six months ended June 30, 2024 for our Latin America property segment was primarily attributable to a decrease in our segment gross margin, partially offset by a decrease in our segment SG&A.

•The increase in operating profit for the three months ended June 30, 2024 for our Data Centers segment was primarily attributable to an increase in our segment gross margin, partially offset by an increase in our segment SG&A. The increase in operating profit for the six months ended June 30, 2024 for our Data Centers segment was primarily attributable to an increase in our segment gross margin.

•The increase in operating profit for the three months ended June 30, 2024 for our Services segment was primarily attributable to a decrease in our segment SG&A, partially offset by a decrease in our segment gross margin. The decrease in operating profit for the six months ended June 30, 2024 for our Services segment was primarily attributable to a decrease in our segment gross margin, partially offset by a decrease in our segment SG&A.

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Depreciation, Amortization and Accretion

	Three Months Ended June 30,				Percent Increase (Decrease)		Six Months Ended June 30,				Percent Increase (Decrease)
	2024		2023				2024		2023
Depreciation, amortization and accretion	$	561.7	$	764.6	(27)	%	$	1,111.1	$	1,558.7	(29)	%

The decreases in depreciation, amortization and accretion expense for the three and six months ended June 30, 2024 were primarily attributable to the change in estimated useful lives of our tower assets.

During the six months ended June 30, 2024, we finalized our reviews of the estimated useful lives of our tower assets and estimated settlement dates for our asset retirement obligations. Based on information obtained, we determined that our estimated asset lives and our estimated settlement dates should be extended, which is expected to result in an estimated $730 million decrease in depreciation and amortization expense and an estimated $75 million decrease in accretion expense for the year ended December 31, 2024. For more information on the change in the estimated useful lives of our tower assets and the change in the estimated settlement dates for our asset retirement obligations, see the information under the captions “Property and Equipment” and “Asset Retirement Obligations” included in note 1 to our consolidated financial statements included in this Quarterly Report.

Other Operating (Income) Expense

	Three Months Ended June 30,				Percent Increase (Decrease)		Six Months Ended June 30,				Percent Increase (Decrease)
	2024		2023				2024		2023
Other operating (income) expense	$	(1.9)	$	61.7	(103)	%	$	0.9	$	189.2	(100)	%

The change in other operating (income) expense during the three months ended June 30, 2024 was primarily attributable to a decrease in impairment charges of $37.7 million and a decrease in integration and acquisition related costs, including benefits related to pre-acquisition contingencies and settlements. The decrease in other operating (income) expense during the six months ended June 30, 2024 was primarily attributable to a decrease in losses on sales or disposals of assets of $91.1 million, primarily attributable to the loss on the sale of Mexico Fiber of $80.0 million in the prior year period, a decrease in impairment charges of $68.1 million and a decrease in integration and acquisition related costs, including benefits related to pre-acquisition contingencies and settlements.

Total Other Expense

	Three Months Ended June 30,				Percent Increase (Decrease)		Six Months Ended June 30,				Percent Increase (Decrease)
	2024		2023				2024		2023
Total other expense	$	255.9	$	399.0	(36)	%	$	461.6	$	806.2	(43)	%

Total other expense consists primarily of interest expense and realized and unrealized foreign currency gains or losses as a result of foreign currency exchange rate fluctuations primarily associated with our intercompany notes and similar unaffiliated balances denominated in a currency other than the subsidiaries’ functional currencies.

The decrease in total other expense during the three months ended June 30, 2024 was primarily due to a decrease in foreign currency losses of $85.9 million and a gain of $46.4 million on the sales of the VIL Shares and the VIL OCDs. Total other expense during the three months ended June 30, 2024 also includes $40.7 million in unrealized gains from equity securities in the United States. The decrease in total other expense during the six months ended June 30, 2024 was primarily due to foreign currency gains of $105.9 million in the current period, as compared to foreign currency losses of $191.7 million in the prior-year period and a gain of $46.4 million on the sales of the VIL Shares and the VIL OCDs. Total other expense during the three months ended June 30, 2024 also includes $26.0 million in unrealized gains from equity securities in the United States.

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Income Tax Provision

	Three Months Ended June 30,						Percent Increase (Decrease)		Six Months Ended June 30,						Percent Increase (Decrease)
	2024			2023					2024			2023
Income tax provision	$	120.0		$	13.2		809	%	$	229.2		$	66.6		244	%
Effective tax rate	11.7		%	2.8		%			11.1		%	7.9		%

As a real estate investment trust for U.S. federal income tax purposes (“REIT”), we may deduct earnings distributed to stockholders against the income generated by our REIT operations. Consequently, the effective tax rate on income from continuing operations for the six months ended June 30, 2024 and 2023 differs from the federal statutory rate.

The increases in the income tax provision during the three and six months ended June 30, 2024 were primarily attributable to increased earnings in certain foreign jurisdictions, partially due to the impacts of the change in estimated useful lives on depreciation and amortization expense. Additionally, the income tax provision for the three and six months ended June 30, 2023 included a benefit from the application of a tax law change in Kenya. For more information on the change in the estimated useful lives of our tower assets, see the information under the caption “Property and Equipment” included in note 1 to our consolidated financial statements included in this Quarterly Report.

Net Income / Adjusted EBITDA and Net Income / Nareit FFO attributable to American Tower Corporation common stockholders / AFFO attributable to American Tower Corporation common stockholders 

During the six months ended June 30, 2024, we updated our presentation of Nareit FFO attributable to American Tower Corporation common stockholders and AFFO attributable to American Tower Corporation common stockholders to remove the separate presentation of Consolidated AFFO. We believe this presentation better aligns our reporting with management’s current approach of allocating capital and resources, managing growth and profitability and assessing the operating performance of our business. The change in presentation has no impact on our Nareit FFO attributable to American Tower Corporation common stockholders or AFFO attributable to American Tower Corporation common stockholders for any periods. Historical financial information included below has been adjusted to reflect the change in presentation.

	Three Months Ended June 30,				Percent Increase (Decrease)		Six Months Ended June 30,				Percent Increase (Decrease)
	2024		2023				2024		2023
Net income	$	908.4	$	461.5	97	%	$	1,830.1	$	776.5	136	%
Income tax provision	120.0		13.2		809		229.2		66.6		244
Other (income) expense	(65.8)		81.2		(181)		(178.8)		179.0		(200)
Loss on retirement of long-term obligations	—		0.3		(100)		—		0.3		(100)
Interest expense	365.4		348.1		5		732.1		688.3		6
Interest income	(43.7)		(30.6)		43		(91.7)		(61.4)		49
Other operating (income) expense	(1.9)		61.7		(103)		0.9		189.2		(100)
Depreciation, amortization and accretion	561.7		764.6		(27)		1,111.1		1,558.7		(29)
Stock-based compensation expense	46.3		49.4		(6)		111.2		114.9		(3)
Adjusted EBITDA	$	1,890.4	$	1,749.4	8	%	$	3,744.1	$	3,512.1	7	%

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	Three Months Ended June 30,				Percent Increase (Decrease)		Six Months Ended June 30,				Percent Increase (Decrease)
	2024		2023				2024		2023
Net income	$	908.4	$	461.5	97	%	$	1,830.1	$	776.5	136	%
Real estate related depreciation, amortization and accretion	521.9		703.0		(26)		1,030.8		1,431.8		(28)
Losses from sale or disposal of real estate and real estate related impairment charges (1)	9.0		50.3		(82)		10.3		169.0		(94)
Adjustments and distributions for unconsolidated affiliates and noncontrolling interests (2)	(89.2)		(82.2)		9		(177.0)		(161.8)		9
Nareit FFO attributable to American Tower Corporation common stockholders	$	1,350.1	$	1,132.6	19	%	$	2,694.2	$	2,215.5	22	%
Straight-line revenue	(73.7)		(120.8)		(39)		(152.7)		(232.8)		(34)
Straight-line expense	13.1		7.6		72		25.7		15.5		66
Stock-based compensation expense	46.3		49.4		(6)		111.2		114.9		(3)
Deferred portion of income tax and other income tax adjustments (3)	29.0		(55.6)		(152)		83.5		(64.5)		(229)
Non-real estate related depreciation, amortization and accretion	39.8		61.6		(35)		80.3		126.9		(37)
Amortization of deferred financing costs, capitalized interest, debt discounts and premiums and long-term deferred interest charges	13.3		12.5		6		26.3		24.2		9
Other (income) expense (4)	(65.8)		81.2		(181)		(178.8)		179.0		(200)
Loss on retirement of long-term obligations	—		0.3		(100)		—		0.3		(100)
Other operating (income) expense (5)	(10.9)		11.4		(196)		(9.4)		20.2		(147)
Capital improvement capital expenditures	(34.1)		(30.0)		14		(67.3)		(65.7)		2
Corporate capital expenditures	(3.2)		(4.2)		(24)		(5.5)		(7.2)		(24)
Adjustments and distributions for unconsolidated affiliates and noncontrolling interests (6)	1.9		4.6		(59)		1.4		9.3		(85)
AFFO attributable to American Tower Corporation common stockholders	$	1,305.8	$	1,150.6	13	%	$	2,608.9	$	2,335.6	12	%

_______________

(1)There are no material impairment charges for the three and six months ended June 30, 2024. For the three and six months ended June 30, 2023, includes impairment charges of $37.5 million and $67.3 million, respectively. For the six months ended June 30, 2023, also includes a loss on the sale of Mexico Fiber of $80.0 million.

(2)Includes distributions to noncontrolling interest holders, distributions related to the outstanding mandatorily convertible preferred equity in connection with our agreements with certain investment vehicles affiliated with Stonepeak Partners LP and adjustments for the impact of noncontrolling interests on Nareit FFO attributable to American Tower Corporation common stockholders.

(3)For the three and six months ended June 30, 2024, includes adjustments for withholding taxes paid in India of $21.7 million and $33.5 million, respectively, which were incurred as a result of the Pending ATC TIPL Transaction. We believe that these withholding tax payments are nonrecurring, and do not believe these are an indication of our operating performance. Accordingly, we believe it is more meaningful to present AFFO attributable to American Tower Corporation common stockholders excluding these amounts.

(4)Includes losses (gains) on foreign currency exchange rate fluctuations of $21.7 million, $107.6 million, ($105.9) million and $191.7 million, respectively.

(5)Primarily includes acquisition-related costs, integration costs and disposition costs.

(6)Includes adjustments for the impact of noncontrolling interests on other line items, excluding those already adjusted for in Nareit FFO attributable to American Tower Corporation common stockholders.

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The increases in net income for the three and six months ended June 30, 2024 were primarily due to (i) decreases in depreciation, amortization and accretion expense, (ii) changes in other (income) expense, primarily due to foreign currency exchange rate fluctuations, (iii) increases in segment operating profit and (iv) decreases in other operating (income) expense, which included the loss on the sale of Mexico Fiber during six months ended June 30, 2023, partially offset by (x) increases in the income tax provision and (y) increases in interest expense.

The increases in Adjusted EBITDA for the three and six months ended June 30, 2024 were primarily attributable to increases in our gross margin and decreases in SG&A, excluding the impact of stock-based compensation expense of $7.0 million and $13.3 million, respectively.

The increases in AFFO attributable to American Tower Corporation common stockholders for the three and six months ended June 30, 2024 were primarily attributable to increases in our operating profit, excluding the impact of straight-line accounting, partially offset by (i) distributions and adjustments for noncontrolling interests, including distributions to noncontrolling interest holders in our Europe property segment and Data Centers segment, (ii) increases in cash paid for taxes and (iii) increases in net cash paid for interest.

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Liquidity and Capital Resources

The information in this section updates as of June 30, 2024 the “Liquidity and Capital Resources” section of the 2023 Form 10-K and should be read in conjunction with that report.

Overview

During the six months ended June 30, 2024, our significant financing transactions included:

•Redemption of our 0.600% senior unsecured notes due 2024 (the “0.600% Notes”), our 5.00% senior unsecured notes due 2024 (the “5.00% Notes”) and our 3.375% senior unsecured notes due 2024 (the “3.375% Notes”) upon their maturity;

•Registered public offering in an aggregate principal amount of $2.4 billion, including 1.0 billion EUR, of senior unsecured notes with maturities ranging from 2029 to 2034; and

•Repayment of 825.0 million EUR ($895.5 million as of the repayment date) unsecured term loan, as amended in December 2021 (the “2021 EUR Three Year Delayed Draw Term Loan”).

As a holding company, our cash flows are derived primarily from the operations of, and distributions from, our operating subsidiaries or funds raised through borrowings under our credit facilities and debt or equity offerings.

The following table summarizes the significant components of our liquidity (in millions):

	As of June 30, 2024
Available under the 2021 Multicurrency Credit Facility	$	4,830.0
Available under the 2021 Credit Facility	1,886.6
Letters of credit	(33.9)
Total available under credit facilities, net	$	6,682.7
Cash and cash equivalents	2,492.1
Total liquidity	$	9,174.8

Subsequent to June 30, 2024, we made additional borrowings of $950.0 million under the 2021 Multicurrency Credit Facility (as defined below) and repayments of $360.4 million under the 2021 Credit Facility (as defined below).

On January 4, 2024, we entered into an agreement with DIT for the Pending ATC TIPL Transaction, pursuant to which DIT will acquire a 100% ownership interest in ATC TIPL. Subject to certain pre-closing terms, total aggregate consideration would potentially represent up to approximately 210 billion INR (approximately $2.5 billion), including the value of the VIL OCDs and the VIL Shares, payments on certain existing customer receivables, the repayment of existing intercompany debt and the repayment, or assumption, of our existing term loan in India, by DIT. During the six months ended June 30, 2024, we sold the VIL Shares and the remaining VIL OCDs and ATC TIPL distributed approximately 27.2 billion INR (approximately $325.9 million) to us. ATC TIPL expects to make a final distribution of approximately 2.4 billion INR (approximately $28.5 million), which includes the satisfaction of the economic benefit associated with the rights to payments on certain existing customer receivables. Each such distribution will be deducted from the total aggregate consideration to be received by us at closing. The Pending ATC TIPL Transaction is expected to close in the second half of 2024, subject to customary closing conditions, including government and regulatory approval. We expect to use the proceeds from the Pending ATC TIPL Transaction to repay existing indebtedness, including under the 2021 Multicurrency Credit Facility and the 2021 Credit Facility.

Summary cash flow information is set forth below (in millions):

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	Six Months Ended June 30,
	2024		2023
Net cash provided by (used for):
Operating activities	$	2,622.1	$	2,279.9
Investing activities	(525.3)		(716.5)
Financing activities	(1,418.1)		(1,573.8)
Net effect of changes in foreign currency exchange rates on cash and cash equivalents, and restricted cash	(153.5)		19.1
Net increase in cash and cash equivalents, and restricted cash	$	525.2	$	8.7

We use our cash flows to fund our operations and investments in our business, including maintenance and improvements, communications site and data center construction, managed network installations and acquisitions. Additionally, we use our cash flows to make distributions, including distributions of our REIT taxable income to maintain our qualification for taxation as a REIT under the Internal Revenue Code of 1986, as amended (the “Code”). We may also periodically repay or repurchase our existing indebtedness or equity. We typically fund our international expansion efforts primarily through a combination of cash on hand, intercompany debt and equity contributions.

As of June 30, 2024, we had total outstanding indebtedness of $39.2 billion, with a current portion of $3.3 billion. During the six months ended June 30, 2024, we generated sufficient cash flow from operations, together with borrowings under our credit facilities, proceeds from our debt issuance and cash on hand, to fund our acquisitions, capital expenditures and debt service obligations, as well as our required distributions. We believe the cash generated by operating activities during the year ending December 31, 2024, together with our borrowing capacity under our credit facilities, will suffice to fund our required distributions, capital expenditures, debt service obligations (interest and principal repayments) and signed acquisitions.

Material Cash Requirements— There were no material changes to the Material Cash Requirements section of the 2023 Form 10-K.

As of June 30, 2024, we had $2.0 billion of cash and cash equivalents held by our foreign subsidiaries. As of June 30, 2024, we had $508.5 million of cash and cash equivalents held by our joint ventures, of which $404.3 million was held by our foreign joint ventures. Certain foreign subsidiaries may pay us interest or principal on intercompany debt. Additionally, in the event that we repatriate funds from our foreign subsidiaries, we may be required to accrue and pay certain taxes.

Cash Flows from Operating Activities

The increase in cash provided by operating activities for the six months ended June 30, 2024 was primarily attributable to (i) an increase in the operating profits of our U.S. & Canada, Asia-Pacific and Europe property segments and our Data Centers segment and (ii) a decrease in cash required for working capital, partially offset by (x) increases in cash paid for interest and cash paid for taxes and (y) changes in unearned revenue.

Cash Flows from Investing Activities

Our significant investing activities during the six months ended June 30, 2024 are highlighted below:

•We spent $55.0 million for acquisitions, including $25.7 million in payments made for acquisitions completed in 2023.

•We received $238.0 million from the sales of the VIL Shares and the VIL OCDs.

•We spent $730.1 million for capital expenditures, as follows (in millions):

Discretionary capital projects (1)	$	393.3
Ground lease purchases (2)	56.3
Capital improvements and corporate expenditures (3)	72.8
Redevelopment	170.1
Start-up capital projects	37.6
Total capital expenditures (4)	$	730.1

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_______________

(1)Includes the construction of 976 communications sites globally and approximately $183.4 million of spend related to data center assets.

(2)Includes $16.2 million of perpetual land easement payments reported in Deferred financing costs and other financing activities in the cash flows from financing activities in our condensed consolidated statements of cash flows.

(3)Includes $2.2 million of finance lease payments reported in Repayments of notes payable, credit facilities, senior notes, secured debt, term loan and finance leases in the cash flows from financing activities in our condensed consolidated statements of cash flows.

(4)Net of purchase credits of $10.2 million on certain assets, which are recorded in investing activities in our condensed consolidated statements of cash flows.

We plan to continue to allocate our available capital, after satisfying our distribution requirements, among investment alternatives that meet our return on investment criteria, while maintaining our commitment to our long-term financial policies. Accordingly, we expect to continue to deploy capital through our annual capital expenditure program, including land purchases and new site and data center facility construction, and through acquisitions. We also regularly review our portfolios as to capital expenditures required to upgrade our infrastructure to our structural standards or address capacity, structural or permitting issues. 

We expect that our 2024 total capital expenditures will be as follows (in millions):

Discretionary capital projects (1)	$	800	to	$	830
Ground lease purchases	125		to	145
Capital improvements and corporate expenditures	195		to	205
Redevelopment	415		to	445
Start-up capital projects	65		to	85
Total capital expenditures	$	1,600	to	$	1,710

_______________

(1)Includes the construction of approximately 2,500 to 3,500 communications sites globally and approximately $480 million of anticipated spend related to data center assets.

Cash Flows from Financing Activities

Our significant financing activities were as follows (in millions):

	Six Months Ended June 30,
	2024		2023
Proceeds from issuance of senior notes, net	$	2,374.1	$	4,182.3
Proceeds from (repayments of) credit facilities, net	962.3		(1,113.8)
Repayments of term loans	(895.5)		(1,500.0)
Proceeds from issuance of securities in securitized transactions, net	—		1,300.0
Repayments of securitized debt	—		(1,300.0)
Repayments of senior notes	(2,150.0)		(1,700.0)
Contributions from noncontrolling interest holders	102.5		—
Distributions to noncontrolling interest holders	(189.2)		—
Distributions paid on common stock	(1,559.2)		(1,461.3)

Repayments of Senior Notes

Repayment of 0.600% Senior Notes—On January 12, 2024, we repaid $500.0 million aggregate principal amount of the 0.600% Notes upon their maturity. The 0.600% Notes were repaid using borrowings under the 2021 Multicurrency Credit Facility. Upon completion of the repayment, none of the 0.600% Notes remained outstanding.

Repayment of 5.00% Senior Notes—On February 14, 2024, we repaid $1.0 billion aggregate principal amount of the 5.00% Notes upon their maturity. The 5.00% Notes were repaid using borrowings under the 2021 Multicurrency Credit Facility. Upon completion of the repayment, none of the 5.00% Notes remained outstanding.

Repayment of 3.375% Senior Notes—On May 15, 2024, we repaid $650.0 million aggregate principal amount of the 3.375% Notes upon their maturity. The 3.375% Notes were repaid using borrowings under the 2021 Credit Facility. Upon completion of the repayment, none of the 3.375% Notes remained outstanding.

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Offerings of Senior Notes

5.200% Senior Notes and 5.450% Senior Notes Offering—On March 7, 2024, we completed a registered public offering of $650.0 million aggregate principal amount of 5.200% senior unsecured notes due 2029 (the “5.200% Notes”) and $650.0 million aggregate principal amount of 5.450% senior unsecured notes due 2034 (the “5.450% Notes”). The net proceeds from this offering were approximately $1,281.3 million, after deducting commissions and estimated expenses. We used the net proceeds to repay existing indebtedness under the 2021 Multicurrency Credit Facility.

3.900% Senior Notes and 4.100% Senior Notes Offering—On May 29, 2024, we completed a registered public offering of 500.0 million EUR ($540.1 million at the date of issuance) aggregate principal amount of 3.900% senior unsecured notes due 2030 (the “3.900% Notes”) and 500.0 million EUR ($540.1 million at the date of issuance) aggregate principal amount of 4.100% senior unsecured notes due 2034 (the “4.100% Notes” and, together with the 5.200% Notes, the 5.450% Notes and the 3.900% Notes, the “Notes”). The net proceeds from this offering were approximately 988.4 million EUR (approximately $1,067.5 million at the date of issuance), after deducting commissions and estimated expenses. We used the net proceeds to repay existing EUR indebtedness under the 2021 Multicurrency Credit Facility.

The key terms of the Notes are as follows:

Senior Notes	Aggregate Principal Amount (in millions)		Issue Date and Interest Accrual Date	Maturity Date	Contractual Interest Rate	First Interest Payment	Interest Payments Due (1)	Par Call Date (2)
5.200% Notes	$	650.0	March 7, 2024	February 15, 2029	5.200%	August 15, 2024	February 15 and August 15	January 15, 2029
5.450% Notes	$	650.0	March 7, 2024	February 15, 2034	5.450%	August 15, 2024	February 15 and August 15	November 15, 2033
3.900% Notes (3)	$	540.1	May 29, 2024	May 16, 2030	3.900%	May 16, 2025	May 16	February 16, 2030
4.100% Notes (3)	$	540.1	May 29, 2024	May 16, 2034	4.100%	May 16, 2025	May 16	February 16, 2034

___________

(1)Accrued and unpaid interest on U.S. Dollar (“USD”) denominated notes is payable in USD semi-annually in arrears and will be computed from the issue date on the basis of a 360-day year comprised of twelve 30-day months. Interest on EUR denominated notes is payable in EUR annually and will be computed on the basis of the actual number of days in the period for which interest is being calculated and the actual number of days from and including the last date on which interest was paid on the notes, beginning on the issue date.

(2)We may redeem the Notes at any time, in whole or in part, at a redemption price equal to 100% of the principal amount of the Notes plus a make-whole premium, together with accrued interest to the redemption date. If we redeem the Notes on or after the par call date, we will not be required to pay a make-whole premium.

(3)The 3.900% Notes and the 4.100% Notes are denominated in EUR; dollar amounts represent the equivalent issuance date aggregate principal amount.

If we undergo a change of control and corresponding ratings decline, each as defined in the applicable supplemental indenture for the Notes, we may be required to repurchase all of the Notes at a purchase price equal to 101% of the aggregate principal amount of the Notes repurchased, plus accrued and unpaid interest (including additional interest, if any), up to but not including the repurchase date. The Notes rank equally in right of payment with all of our other senior unsecured debt obligations and are structurally subordinated to all existing and future indebtedness and other obligations of our subsidiaries.

The supplemental indentures contain certain covenants that restrict our ability to merge, consolidate or sell assets and our (together with our subsidiaries’) ability to incur liens. These covenants are subject to a number of exceptions, including that we and our subsidiaries may incur certain liens on assets, mortgages or other liens securing indebtedness if the aggregate amount of indebtedness secured by such liens does not exceed 3.5x Adjusted EBITDA, as defined in the applicable supplemental indenture.

Bank Facilities

2021 Multicurrency Credit Facility—During the six months ended June 30, 2024, we borrowed an aggregate of $3.6 billion, including 0.9 billion EUR ($1.0 billion as of the borrowing date) and repaid an aggregate of $3.1 billion, including 1.1 billion EUR ($1.2 billion as of the repayment date), of revolving indebtedness under our $6.0 billion senior unsecured multicurrency revolving credit facility, as amended and restated in December 2021, as further amended (the “2021 Multicurrency Credit Facility”). We used the borrowings to repay outstanding indebtedness, including the 0.600%

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Notes, the 5.00% Notes and the 2021 EUR Three Year Delayed Draw Term Loan, and for general corporate purposes. As of June 30, 2024, there are no EUR borrowings outstanding under the 2021 Multicurrency Credit Facility. We currently have $3.5 million of undrawn letters of credit and maintain the ability to draw down and repay amounts under the 2021 Multicurrency Credit Facility in the ordinary course.

2021 Credit Facility—During the six months ended June 30, 2024, we borrowed an aggregate of $1.5 billion and repaid an aggregate of $1.0 billion of revolving indebtedness under our $4.0 billion senior unsecured revolving credit facility, as amended and restated in December 2021, as further amended (the “2021 Credit Facility”). We used the borrowings to repay outstanding indebtedness, including the 3.375% Notes, and for general corporate purposes. We currently have $30.4 million of undrawn letters of credit and maintain the ability to draw down and repay amounts under the 2021 Credit Facility in the ordinary course.

Repayment of 2021 EUR Three Year Delayed Draw Term Loan—On May 21, 2024, we repaid all amounts outstanding under the 2021 EUR Three Year Delayed Draw Term Loan using borrowings under the 2021 Multicurrency Credit Facility.

As of June 30, 2024, the key terms under the 2021 Multicurrency Credit Facility, the 2021 Credit Facility and our $1.0 billion unsecured term loan, as amended and restated in December 2021, as further amended (the “2021 Term Loan”), were as follows:

Bank Facility		Outstanding Principal Balance ($ in millions)		Maturity Date		SOFR or EURIBOR borrowing interest rate range (1)	Base rate borrowing interest rate range (1)	Current margin over SOFR or EURIBOR and the base rate, respectively
2021 Multicurrency Credit Facility	(2)	$	1,170.0	July 1, 2026	(3)	0.875% - 1.500%	0.000% - 0.500%	1.125% and 0.125%
2021 Credit Facility	(2)	2,113.4		July 1, 2028	(3)	0.875% - 1.500%	0.000% - 0.500%	1.125% and 0.125%
2021 Term Loan	(2)	1,000.0		January 31, 2027		0.875% - 1.750%	0.000% - 0.750%	1.125% and 0.125%

___________

(1)Represents interest rate above: (a) SOFR for SOFR based borrowings, (b) Euro Interbank Offer Rate (“EURIBOR”) for EURIBOR based borrowings and (c) the defined base rate for base rate borrowings, in each case based on our debt ratings.

(2)Currently borrowed at SOFR.

(3)Subject to two optional renewal periods.

We must pay a quarterly commitment fee on the undrawn portion of each of the 2021 Multicurrency Credit Facility and the 2021 Credit Facility. The commitment fee for the 2021 Multicurrency Credit Facility and the 2021 Credit Facility ranges from 0.080% to 0.200% per annum, based upon our debt ratings, and is currently 0.110%.

The 2021 Multicurrency Credit Facility, the 2021 Credit Facility and the 2021 Term Loan and the associated loan agreements (the “Bank Loan Agreements”) do not require amortization of principal and may be paid prior to maturity in whole or in part at our option without penalty or premium. We have the option of choosing either a defined base rate, SOFR or EURIBOR as the applicable base rate for borrowings under these bank facilities.

Each Bank Loan Agreement contains certain reporting, information, financial and operating covenants and other restrictions (including limitations on additional debt, guaranties, sales of assets and liens) with which we must comply. Failure to comply with these financial and operating covenants could not only prevent us from being able to borrow additional funds under the revolving credit facilities, but may constitute a default, which could result in, among other things, the amounts outstanding under the applicable agreement, including all accrued interest and unpaid fees, becoming immediately due and payable.

India Term Loan—On February 17, 2023, we borrowed 10.0 billion INR (approximately $120.7 million at the date of borrowing) under an unsecured term loan in India with a maturity date that is one year from the date of the first draw thereunder (the “India Term Loan”). In January 2024, we amended the India Term Loan to extend the maturity date to December 31, 2024.

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Stock Repurchase Programs—In March 2011, our Board of Directors approved a stock repurchase program, pursuant to which we are authorized to repurchase up to $1.5 billion of our common stock (the “2011 Buyback”). In December 2017, our Board of Directors approved an additional stock repurchase program, pursuant to which we are authorized to repurchase up to $2.0 billion of our common stock (the “2017 Buyback,” and, together with the 2011 Buyback, the “Buyback Programs”).

During the six months ended June 30, 2024, there were no repurchases under either of the Buyback Programs.

We expect to continue managing the pacing of the remaining approximately $2.0 billion under the Buyback Programs in response to general market conditions and other relevant factors. We expect to fund any further repurchases of our common stock through a combination of cash on hand, cash generated by operations and borrowings under our credit facilities. Repurchases under the Buyback Programs are subject to, among other things, us having available cash to fund the repurchases.

Sales of Equity Securities—We receive proceeds from sales of our equity securities pursuant to our employee stock purchase plan and upon exercise of stock options granted under our equity incentive plan. During the six months ended June 30, 2024, we received an aggregate of $23.7 million in proceeds upon exercises of stock options and sales pursuant to our employee stock purchase plan.

Future Financing Transactions—We regularly consider various options to obtain financing and access the capital markets, subject to market conditions, to meet our funding needs. Such capital raising alternatives, in addition to those noted above, may include amendments and extensions of our bank facilities, entry into new bank facilities, transactions with private equity funds or partnerships, additional senior note and equity offerings and securitization transactions. No assurance can be given as to whether any such financing transactions will be completed or as to the timing or terms thereof.

Distributions—As a REIT, we must annually distribute to our stockholders an amount equal to at least 90% of our REIT taxable income (determined before the deduction for distributed earnings and excluding any net capital gain). Generally, we have distributed, and expect to continue to distribute, all or substantially all of our REIT taxable income after taking into consideration our utilization of net operating losses (“NOLs”). We have distributed an aggregate of approximately $19.0 billion to our common stockholders, including the dividend paid in July 2024, primarily classified as ordinary income that may be treated as qualified REIT dividends under Section 199A of the Code for taxable years beginning before 2026.

During the six months ended June 30, 2024, we paid $3.32 per share, or $1.5 billion, to our common stockholders of record. In addition, we declared a distribution of $1.62 per share, or $756.7 million, paid on July 12, 2024 to our common stockholders of record at the close of business on June 14, 2024.

The amount, timing and frequency of future distributions will be at the sole discretion of our Board of Directors and will depend on various factors, a number of which may be beyond our control, including our financial condition and operating cash flows, the amount required to maintain our qualification for taxation as a REIT and reduce any income and excise taxes that we otherwise would be required to pay, limitations on distributions in our existing and future debt and preferred equity instruments, our ability to utilize NOLs to offset our distribution requirements, limitations on our ability to fund distributions using cash generated through our taxable REIT subsidiaries and other factors that our Board of Directors may deem relevant.

We accrue distributions on unvested restricted stock units, which are payable upon vesting. As of June 30, 2024, the amount accrued for distributions payable related to unvested restricted stock units was $18.0 million. During the six months ended June 30, 2024, we paid $10.0 million of distributions upon the vesting of restricted stock units.

Factors Affecting Sources of Liquidity    

As discussed in the “Liquidity and Capital Resources” section of the 2023 Form 10-K, our liquidity depends on our ability to generate cash flow from operating activities, borrow funds under our credit facilities and maintain compliance with the contractual agreements governing our indebtedness. We believe that the debt agreements discussed below represent our material debt agreements that contain covenants, our compliance with which would be material to an investor’s understanding of our financial results and the impact of those results on our liquidity.

Restrictions Under Loan Agreements Relating to Our Credit Facilities—Each Bank Loan Agreement contains certain financial and operating covenants and other restrictions applicable to us and our subsidiaries that are not designated as unrestricted subsidiaries on a consolidated basis. These restrictions include limitations on additional debt, distributions

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and dividends, guaranties, sales of assets and liens. The Bank Loan Agreements also contain covenants that establish financial tests with which we and our restricted subsidiaries must comply related to total leverage and senior secured leverage, as set forth in the table below. As of June 30, 2024, we were in compliance with each of these covenants.

		Compliance Tests For The 12 Months Ended June 30, 2024 ($ in billions)
	Ratio (1)	Additional Debt Capacity Under Covenants (2)	Capacity for Adjusted EBITDA Decrease Under Covenants (3)
Consolidated Total Leverage Ratio	Total Debt to Adjusted EBITDA ≤ 6.00:1.00	~ 5.8	~ 1.0
Consolidated Senior Secured Leverage Ratio	Senior Secured Debt to Adjusted EBITDA ≤ 3.00:1.00	~ 19.9	~ 6.6

_______________

(1)Each component of the ratio as defined in the applicable loan agreement.

(2)Assumes no change to Adjusted EBITDA.

(3)Assumes no change to our debt levels.

(4)Effectively, however, additional Senior Secured Debt under this ratio would be limited to the capacity under the Consolidated Total Leverage Ratio.

The Bank Loan Agreements also contain reporting and information covenants that require us to provide financial and operating information to the lenders within certain time periods. If we are unable to provide the required information on a timely basis, we would be in breach of these covenants.

Failure to comply with the financial maintenance tests and certain other covenants of the Bank Loan Agreements could not only prevent us from being able to borrow additional funds under the revolving credit facilities, but may also constitute a default, which could result in, among other things, the amounts outstanding, including all accrued interest and unpaid fees, becoming immediately due and payable. If this were to occur, we may not have sufficient cash on hand to repay such indebtedness. The key factors affecting our ability to comply with the debt covenants described above are our financial performance relative to the financial maintenance tests defined in the Bank Loan Agreements and our ability to fund our debt service obligations. Based upon our current expectations, we believe our operating results during the next 12 months will be sufficient to comply with these covenants.

Restrictions Under Agreements Relating to the 2015 Securitization and the Trust Securitizations—The indenture and related supplemental indenture governing the American Tower Secured Revenue Notes, Series 2015-2, Class A (the “Series 2015-2 Notes”) issued by GTP Acquisition Partners I, LLC (“GTP Acquisition Partners”) in a private securitization transaction in May 2015 (the “2015 Securitization”) and the loan agreement related to the securitization transactions completed in March 2018 (the “2018 Securitization”) and March 2023 (the “2023 Securitization” and, together with the 2018 Securitization, the “Trust Securitizations”) (collectively, the “Securitization Loan Agreements”) include certain financial ratios and operating covenants and other restrictions customary for transactions subject to rated securitizations. Among other things, GTP Acquisition Partners and American Tower Asset Sub, LLC and American Tower Asset Sub II, LLC (together, the “AMT Asset Subs”) are prohibited from incurring other indebtedness for borrowed money or further encumbering their assets, subject to customary carve-outs for ordinary course trade payables and permitted encumbrances (as defined in the applicable agreements).

Under the Securitization Loan Agreements, amounts due will be paid from the cash flows generated by the assets securing the Series 2015-2 Notes or the assets securing the nonrecourse loan that secures the Secured Tower Revenue Securities, Series 2018-1, Subclass A (the “Series 2018-1A Securities”), the Secured Tower Revenue Securities, Series 2018-1, Subclass R (the “Series 2018-1R Securities” and, together with the Series 2018-1A Securities, the “2018 Securities”), the Secured Tower Revenue Securities 2023-1, Subclass A (the “Series 2023-1A Securities”), the Secured Tower Revenue Securities, Series 2023-1, Subclass R (the “Series 2023-1R Securities” and, together with the Series 2023-1A Securities, the “2023 Securities”) issued in the Trust Securitizations (the “Loan”), as applicable, which must be deposited into certain reserve accounts, and thereafter distributed, solely pursuant to the terms of the applicable agreement. On a monthly basis, after paying all required amounts under the applicable agreement, subject to the conditions described in the table below, the excess cash flows generated from the operation of these assets are released to GTP Acquisition Partners or the AMT Asset Subs, as applicable, which can then be distributed to us for use. As of June 30, 2024, $81.4 million held in such reserve accounts was classified as restricted cash.

Certain information with respect to the 2015 Securitization and the Trust Securitizations is set forth below. The debt service coverage ratio (“DSCR”) is generally calculated as the ratio of the net cash flow (as defined in the applicable

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agreement) to the amount of interest, servicing fees and trustee fees required to be paid over the succeeding 12 months on the principal amount of the Series 2015-2 Notes or the Loan, as applicable, that will be outstanding on the payment date following such date of determination.

	Issuer or Borrower	Notes/Securities Issued	Conditions Limiting Distributions of Excess Cash		Excess Cash Distributed During the Six Months Ended June 30, 2024	DSCR as of June 30, 2024	Capacity for Decrease in Net Cash Flow Before Triggering Cash Trap DSCR (1)	Capacity for Decrease in Net Cash Flow Before Triggering Minimum DSCR (1)
			Cash Trap DSCR	Amortization Period
					(in millions)		(in millions)	(in millions)
2015 Securitization	GTP Acquisition Partners	American Tower Secured Revenue Notes, Series 2015-2	1.30x, Tested Quarterly (2)	(3)(4)	$185.2	18.83x	$322.6	$325.4
Trust Securitizations	AMT Asset Subs	Secured Tower Revenue Securities, Series 2023-1, Subclass A, Secured Tower Revenue Securities, Series 2023-1, Subclass R, Secured Tower Revenue Securities, Series 2018-1, Subclass A and Secured Tower Revenue Securities, Series 2018-1, Subclass R	1.30x, Tested Quarterly (2)	(3)(5)	$277.4	7.15x	$526.7	$540.2

_____________

(1)Based on the net cash flow of the applicable issuer or borrower as of June 30, 2024 and the expenses payable over the next 12 months on the Series 2015-2 Notes or the Loan, as applicable.

(2)If the DSCR were equal to or below 1.30x (the “Cash Trap DSCR”) for any quarter, all cash flow in excess of amounts required to make debt service payments, fund required reserves, pay management fees and budgeted operating expenses and make other payments required under the applicable transaction documents, referred to as excess cash flow, will be deposited into a reserve account (the “Cash Trap Reserve Account”) instead of being released to the applicable issuer or borrower. Once triggered, a Cash Trap DSCR condition continues to exist until the DSCR exceeds the Cash Trap DSCR for two consecutive calendar quarters.

(3)An amortization period commences if the DSCR is equal to or below 1.15x (the “Minimum DSCR”) at the end of any calendar quarter and continues to exist until the DSCR exceeds the Minimum DSCR for two consecutive calendar quarters.

(4)No amortization period is triggered if the outstanding principal amount of a series has not been repaid in full on the applicable anticipated repayment date. However, in that event, additional interest will accrue on the unpaid principal balance of the applicable series, and that series will begin to amortize on a monthly basis from excess cash flow.

(5)An amortization period exists if the outstanding principal amount has not been paid in full on the applicable anticipated repayment date and continues to exist until the principal has been repaid in full.

A failure to meet the noted DSCR tests could prevent GTP Acquisition Partners or the AMT Asset Subs from distributing excess cash flow to us, which could affect our ability to fund our capital expenditures, including tower construction and acquisitions, and to meet REIT distribution requirements. During an “amortization period,” all excess cash flow and any amounts then in the applicable Cash Trap Reserve Account would be applied to pay the principal of the Series 2015-2 Notes or the Loan, as applicable, on each monthly payment date, and so would not be available for distribution to us. Further, additional interest will begin to accrue with respect to the Series 2015-2 Notes or subclass of the Loan from and after the anticipated repayment date at a per annum rate determined in accordance with the applicable agreement. With respect to the Series 2015-2 Notes, upon the occurrence of, and during, an event of default, the applicable trustee may, in its discretion or at the direction of holders of more than 50% of the aggregate outstanding principal of the Series 2015-2 Notes, declare the Series 2015-2 Notes immediately due and payable, in which case any excess cash flow would need to be used to pay holders of those notes. Furthermore, if GTP Acquisition Partners or the AMT Asset Subs were to default on the Series 2015-2 Notes or the Loan, the applicable trustee may seek to foreclose upon or otherwise convert the ownership of all or any portion of the 3,340 communications sites that secure the Series 2015-2 Notes or the 5,029 broadcast and wireless communications towers and related assets that secure the Loan, respectively, in which case we could lose those sites and their associated revenue.

As discussed above, we use our available liquidity and seek new sources of liquidity to fund capital expenditures, future growth and expansion initiatives, satisfy our distribution requirements and repay or repurchase our debt. If we determine

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that it is desirable or necessary to raise additional capital, we may be unable to do so, or such additional financing may be prohibitively expensive or restricted by the terms of our outstanding indebtedness. Additionally, as further discussed under the caption “Risk Factors” in Item 1A of the 2023 Form 10-K, market volatility and disruption caused by inflation, rising interest rates and supply chain disruptions may impact our ability to raise additional capital through debt financing activities or our ability to repay or refinance maturing liabilities, or impact the terms of any new obligations. If we are unable to raise capital when our needs arise, we may not be able to fund capital expenditures, future growth and expansion initiatives, satisfy our REIT distribution requirements and debt service obligations, or refinance our existing indebtedness.

In addition, our liquidity depends on our ability to generate cash flow from operating activities. As set forth under the caption “Risk Factors” in Item 1A of the 2023 Form 10-K, we derive a substantial portion of our revenues from a small number of customers and, consequently, a failure by a significant customer to perform its contractual obligations to us could adversely affect our cash flow and liquidity.

For more information regarding the terms of our outstanding indebtedness, please see note 8 to our consolidated financial statements included in the 2023 Form 10-K.

Critical Accounting Policies and Estimates

Management’s discussion and analysis of financial condition and results of operations are based upon our consolidated and condensed consolidated financial statements, which have been prepared in accordance with GAAP. The preparation of these financial statements requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, as well as related disclosures of contingent assets and liabilities. We evaluate our policies and estimates on an ongoing basis, including those related to impairment of long-lived assets, revenue recognition, rent expense, income taxes and accounting for business combinations and acquisitions of assets, as further discussed in the 2023 Form 10-K. Management bases its estimates on historical experience and various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying amounts of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

We have reviewed our policies and estimates to determine our critical accounting policies for the six months ended June 30, 2024. We have made no material changes to the critical accounting policies described in the 2023 Form 10-K.

In the third quarter of 2022, VIL communicated that it would make partial payments of its contractual amounts owed to us and indicated that it would continue to make partial payments for the remainder of 2022. In late 2022, VIL had communicated its intent to resume payments in full under its contractual obligations owed to us beginning on January 1, 2023. However, in early 2023, VIL communicated that it would not be able to resume payments in full of its contractual obligations owed to us, and that it would instead continue to make partial payments, for which we recorded reserves in late 2022 and the first half of 2023. In the second half of 2023, VIL began making payments in full of its monthly contractual obligations owed to us.

We will continue to monitor the status of these developments, as it is possible that the estimated future cash flows may differ from current estimates and changes in estimated cash flows from customers in India could have further negative effects on previously recorded tangible and intangible assets, including amounts originally recorded as tenant-related intangible assets, resulting in additional impairments. Events that could negatively affect our India reporting unit’s financial results include increased tenant attrition exceeding our forecast, additional VIL payment shortfalls, carrier tenant bankruptcies and other factors set forth in Item 1A of the 2023 Form 10-K under the caption “Risk Factors.”

The carrying value of tenant-related intangible assets in India was $0.3 billion as of June 30, 2024, which represents 3% of our consolidated balance of $11.7 billion. Additionally, a significant reduction in customer related cash flows in India could also impact our tower portfolio and network location intangible assets. The carrying values of our tower portfolio and network location intangibles in India were $0.9 billion and $0.2 billion, respectively, as of June 30, 2024, which represent 10% and 8% of our consolidated balances of $9.1 billion and $3.1 billion, respectively. The carrying value of goodwill in India was $0.6 billion as of June 30, 2024, which represents 4% of our consolidated balance of $12.5 billion.

During the six months ended June 30, 2024, no potential goodwill impairment was identified as the fair value of each of our reporting units was in excess of its carrying amount.

Accounting Standards Update

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For a discussion of recent accounting standards updates, see note 1 to our consolidated and condensed consolidated financial statements included in this Quarterly Report.

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ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Interest Rate Risk

Changes in interest rates can cause interest charges to fluctuate on our variable rate debt. Variable rate debt as of June 30, 2024 consisted of $1.2 billion under the 2021 Multicurrency Credit Facility, $2.1 billion under the 2021 Credit Facility and $1.0 billion under the 2021 Term Loan. A 10% increase in current interest rates would result in an additional $14.0 million of interest expense for the six months ended June 30, 2024.

Foreign Currency Risk

We are exposed to market risk from changes in foreign currency exchange rates primarily in connection with our foreign subsidiaries and joint ventures internationally. Any transaction denominated in a currency other than the U.S. Dollar is reported in U.S. Dollars at the applicable exchange rate. All assets and liabilities are translated into U.S. Dollars at exchange rates in effect at the end of the applicable fiscal reporting period and all revenues and expenses are translated at average rates for the period. The cumulative translation effect is included in equity as a component of Accumulated other comprehensive loss. We may enter into additional foreign currency financial instruments in anticipation of future transactions to minimize the impact of foreign currency exchange rate fluctuations. For the six months ended June 30, 2024, 43% of our revenues and 50% of our total operating expenses were denominated in foreign currencies.

As of June 30, 2024, we have incurred intercompany debt that is not considered to be permanently reinvested and similar unaffiliated balances that were denominated in a currency other than the functional currency of the subsidiary in which it is recorded. As this debt had not been designated as being a long-term investment in nature, any changes in the foreign currency exchange rates will result in unrealized gains or losses, which will be included in our determination of net income. An adverse change of 10% in the underlying exchange rates of our unsettled intercompany debt and similar unaffiliated balances would result in $92.7 million of unrealized losses that would be included in Other income (expense) in our consolidated statements of operations for the six months ended June 30, 2024. As of June 30, 2024, we have 7.5 billion EUR (approximately $8.0 billion) denominated debt outstanding. An adverse change of 10% in the underlying exchange rates of our outstanding EUR debt would result in $0.9 billion of foreign currency losses that would be included in Other expense in our consolidated statements of operations for the six months ended June 30, 2024.

ITEM 4. CONTROLS AND PROCEDURES

Disclosure Controls and Procedures

We have established disclosure controls and procedures designed to ensure that material information relating to us, including our consolidated subsidiaries, is made known to the officers who certify our financial reports and to other members of senior management and the Board of Directors.

Our management, with the participation of our principal executive officer and principal financial officer, evaluated the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, as of the end of the period covered by this Quarterly Report. Based on this evaluation, our principal executive officer and principal financial officer concluded that these disclosure controls and procedures were effective as of June 30, 2024 and designed to ensure that the information required to be disclosed in our reports filed or submitted under the Exchange Act is recorded, processed, summarized and reported within the requisite time periods specified in the applicable rules and forms, and that it is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate, to allow timely decisions regarding required disclosure.

Changes in Internal Control over Financial Reporting

There have been no changes in our internal control over financial reporting (as defined in Rule 13a-15(f) under the Exchange Act) during the fiscal quarter ended June 30, 2024 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

We periodically become involved in various claims and lawsuits that are incidental to our business. In the opinion of management, after consultation with counsel, there are no matters currently pending that would, in the event of an adverse outcome, have a material impact on our consolidated financial position, results of operations or liquidity.

ITEM 1A. RISK FACTORS

There were no material changes to the risk factors disclosed in Item 1A of the 2023 Form 10-K.

ITEM 5. OTHER INFORMATION

(c) Insider Trading Arrangements and Policies

Rule 10b5-1 Plans

Olivier Puech, our Executive Vice President and President, Latin America and EMEA, entered into a pre-arranged stock trading plan on May 3, 2024. Mr. Puech’s plan provides for the sale of up to 38,982 shares of our common stock between August 2, 2024 and December 31, 2024.

Eugene M. Noel, our Executive Vice President and President, U.S. Tower Division, entered into a pre-arranged stock trading plan on May 9, 2024. Mr. Noel’s plan provides for the potential exercise of vested stock options and the associated sale of up to 33,135 shares of our common stock between August 12, 2024 and March 10, 2025.

Rodney M. Smith, our Executive Vice President, Chief Financial Officer and Treasurer, entered into a pre-arranged stock trading plan on May 13, 2024. Mr. Smith’s plan provides for the potential exercise of vested stock options and the associated sale of up to 33,135 shares of our common stock between November 14, 2024 and February 21, 2025.

Each of these trading plans was entered into during an open insider trading window and is intended to satisfy the affirmative defense of Rule 10b5-1 under the Exchange Act and our policies regarding transactions in our securities. Generally, these trading plans pre-establish the amounts, prices and dates of future purchases or sales of our stock, including shares issued upon the exercise or vesting of equity awards. Under these trading plans, the individual director or officer relinquishes control over the transactions once the trading plan is put into place. Accordingly, sales under these plans may occur at any time, including possibly before, simultaneously with, or immediately after, significant Company events.

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ITEM 6. EXHIBITS

		Incorporated By Reference
Exhibit No.	Description of Document	Form	File No.	Date of Filing	Exhibit No.
3.1	Restated Certificate of Incorporation of the Company as filed with the Secretary of State of the State of Delaware, effective as of December 31, 2011	8-K	001-14195	January 3, 2012	3.1
3.2	Certificate of Merger, effective as of December 31, 2011	8-K	001-14195	January 3, 2012	3.2
3.3	Amended and Restated By-Laws of the Company, effective as of December 13, 2023	8-K	001-14195	December 14, 2023	3.1
4.1	Supplemental Indenture No. 6, dated as of May 29, 2024, by and among the Company, U.S. Bank Trust Company, National Association, as trustee, and Elavon Financial Services DAC, UK Branch, as paying agent, for the 3.900% Senior Notes due 2030 and the 4.100% Senior Notes due 2034	8-K	001-14195	May 29, 2024	4.1
10.1	Notice of Benchmark Replacement and Amendment No. 2, dated as of June 27, 2024, to the Third Amended and Restated Multicurrency Revolving Credit Agreement dated December 8, 2021, as further amended	Filed herewith as Exhibit 10.1	—	—	—
31.1	Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002	Filed herewith as Exhibit 31.1	—	—	—
31.2	Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002	Filed herewith as Exhibit 31.2	—	—	—
32	Certifications filed pursuant to 18. U.S.C. Section 1350	Filed herewith as Exhibit 32	—	—	—
101.SCH	Inline XBRL Taxonomy Extension Schema Document		—	—	—
101.CAL	Inline XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB	Inline XBRL Taxonomy Extension Label Linkbase Document
101.PRE	Inline XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF	Inline XBRL Taxonomy Extension Definition	Filed herewith as Exhibit 101

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		Incorporated By Reference
Exhibit No.	Description of Document	Form	File No.	Date of Filing	Exhibit No.
104	Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)	—	—	—	—

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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.

	AMERICAN TOWER CORPORATION
Date: July 30, 2024	By:	/S/   RODNEY M. SMITH
		Rodney M. Smith Executive Vice President, Chief Financial Officer and Treasurer (Duly Authorized Officer and Principal Financial Officer)

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EX-10.1

Exhibit 10.1

NOTICE OF BENCHMARK REPLACEMENT AND AMENDMENT NO. 2 TO THE CREDIT AGREEMENT

    Dated as of June 27, 2024

This NOTICE OF BENCHMARK REPLACEMENT AND AMENDMENT NO. 2 TO THE CREDIT AGREEMENT (this “Amendment”) is made betweenAMERICAN TOWER CORPORATION, a Delaware corporation (the “Company”) and TORONTO DOMINION (TEXAS) LLC, as administrative agent (the “Administrative Agent”) under the Credit Agreement referred to below.

Reference is hereby made to the Third Amended and Restated Multicurrency Revolving Credit Agreement dated as of December 8, 2021 (as amended by Amendment No. 1 dated as of June 29, 2023, the “Credit Agreement”) among the Company, certain of the Company’s subsidiaries, the lenders parties thereto and the Administrative Agent.

SECTION 1.Notice of Benchmark Replacement. In accordance with Section 10.1(b)(y) of the Credit Agreement, the Company and the Administrative Agent have determined that the applicable authority has made a public statement identifying June 28, 2024 as the date after which all tenors of CDOR will no longer be representative or made available, or used for determining the interest rate of loans denominated in Canadian Dollars, and that there is no successor administrator that will continue to provide CDOR.

The Company and the Administrative Agent have agreed, in accordance with clause (b) of the definition of “Benchmark Replacement”, that the Benchmark Replacement for CDOR is Term CORRA and, accordingly, have agreed to certain Conforming Changes to implement such replacement.

SECTION 2.    Amendments to Credit Agreement. As of the Amendment Effective Date (as defined below) Section 1.1 of the Credit Agreement shall be amended as follows:

(a)Clause (b) of the definition of “Relevant Rate” is amended in full to read as follows:

with respect to any Term Rate Advance denominated in Canadian Dollars, Adjusted Term CORRA,

(b)Clause (c) of the definition of “Term Rate” is amended in full to read as follows:

with respect to any Advance denominated in Canadian Dollars, Adjusted Term CORRA

(c)The following definitions are added:

“Adjusted Term CORRA” shall mean, for purposes of any calculation and subject to the provisions of Section 10.1(b), the rate per annum equal to (a) Term CORRA for such calculation plus (b) the Term CORRA Adjustment; provided that if Adjusted Term CORRA as so determined shall ever be less than the Floor, then Adjusted Term CORRA shall be deemed to be the Floor.

“CORRA” means the Canadian Overnight Repo Rate Average administered and published by the Bank of Canada (or any successor administrator).

“Term CORRA” means, for any calculation with respect to a Term Rate Advance denominated in Canadian Dollars, the Term CORRA Reference Rate for a tenor comparable to the applicable Interest Period on the day (such day, the “Periodic Term CORRA Determination Day”) that is two (2) Business Days prior to the first day of such Interest Period, as such rate is published by the Term CORRA Administrator; provided, however, that if as of 1:00 p.m. (Toronto time) on any Periodic Term CORRA Determination Day the Term CORRA Reference Rate for the applicable tenor has not been published by the Term CORRA Administrator and a Benchmark Replacement Date with respect to the Term CORRA Reference Rate has not occurred, then Term CORRA will be the Term CORRA Reference Rate for such tenor as published by the Term CORRA Administrator on the first preceding Business Day for which such Term CORRA Reference Rate for such tenor was published by the Term CORRA Administrator so long as such first preceding Business Day is not more than three (3) Business Days prior to such Periodic Term CORRA Determination Day.

“Term CORRA Adjustment” means (i) 0.29547% (29.547 basis points) for an Interest Period of one-month’s duration and 0.32138% (32.138 basis points) for an Interest Period of three-months’ duration.

“Term CORRA Administrator” means Candeal Benchmark Administration Services Inc., TSX Inc., or any successor administrator.

“Term CORRA Reference Rate” means the forward-looking term rate based on CORRA.

(d)The definition of “CDOR Rate” is deleted in full.

SECTION 3.Conditions of Effectiveness. This Amendment shall become effective at 5:00 p.m. on the fifth Business Day after the Administrative Agent shall have posted this Amendment to all Lenders and the Company unless, prior to such time, Lenders comprising the Majority Lenders have delivered to the Administrative Agent written notice that such Majority Lenders object to the amendments set forth in Section 1 above (the “Amendment Effective Date”).

SECTION 4.Reference to and Effect on the Credit Agreement and Loan Documents. (a) On and after the effectiveness of this Amendment, each reference in the Credit Agreement to “this Agreement”, “hereunder”, “hereof” or words of like import referring to the Credit Agreement, and each reference in the Notes and the other Loan Documents to “the Credit Agreement”, “thereunder”, “thereof” or words of like import referring to the Credit Agreement, shall mean and be a reference to the Credit Agreement as amended hereby.

(b)The Credit Agreement and the other Loan Documents, as specifically amended by this Amendment, are and shall continue to be in full force and effect and are hereby in all respects ratified and confirmed.

(c)The execution, delivery and effectiveness of this Amendment shall not, except as expressly provided herein, operate as a waiver of any right, power or remedy of any Lender or the Administrative Agent under the Credit Agreement or any other Loan Document, nor constitute a waiver of any provision of the Credit Agreement or any other Loan Document.

(d)To the extent any Advance bearing interest at the CDOR Rate is outstanding on the Amendment Effective Date, such Advance shall continue to bear interest at the CDOR Rate until the end of the current Interest Period or payment period applicable to such Advance.

SECTION 5.Execution in Counterparts. This Amendment may be executed in any number of counterparts and by different parties hereto in separate counterparts, each of which when so executed shall be deemed to be an original and all of which taken together shall constitute but one and the same agreement. Delivery of an executed counterpart of a signature page to this Amendment by electronic means shall be effective as delivery of a manually executed counterpart of this Amendment.

SECTION 6.Miscellaneous. Sections 12.7 (Counterparts), 12.8 (Governing Law; Jurisdiction) and 13.1 (Waiver of Jury Trial) of the Credit Agreement are incorporated herein by reference, mutatis mutandis.

IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be executed by their respective officers thereunto duly authorized, as of the date first above written.

AMERICAN TOWER CORPORATION, as Company

By: /s/ Rodney M. Smith                

Name: Rodney M. Smith

Title:      Executive Vice President, Chief Financial

Officer and Treasurer

TORONTO DOMINION (TEXAS) LLC,
as Administrative Agent

By: /s/ Ronald Davis                

Name: Ronald Davis

Title:     Authorized Signatory

EX-31.1

Exhibit 31.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE

SARBANES-OXLEY ACT OF 2002

I, Steven O. Vondran, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of American Tower Corporation;

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: July 30, 2024	By:	/S/    STEVEN O. VONDRAN
		Steven O. Vondran
		President and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Rodney M. Smith, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of American Tower Corporation;

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: July 30, 2024	By:	/S/    RODNEY M.SMITH
		Rodney M. Smith
		Executive Vice President, Chief Financial Officer and Treasurer

EX-32

Exhibit 32

CERTIFICATIONS PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with this Quarterly Report on Form 10-Q of American Tower Corporation (the “Company”) for the six months ended June 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned officers of the Company hereby certifies, pursuant to 18 U.S.C. Section 1350, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: July 30, 2024	By:	/S/   STEVEN O. VONDRAN
		Steven O. Vondran
		President and Chief Executive Officer
Date: July 30, 2024	By:	/S/    RODNEY M. SMITH
		Rodney M. Smith
		Executive Vice President, Chief Financial Officer and Treasurer

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Cover Page - shares	6 Months Ended
	Jun. 30, 2024	Jul. 23, 2024
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2024
Document Transition Report	false
Entity File Number	001-14195
Entity Registrant Name	AMERICAN TOWER CORPORATION
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	65-0723837
Entity Address, Address Line One	116 Huntington Avenue
Entity Address, City or Town	Boston
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02116
City Area Code	617
Local Phone Number	375-7500
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		467,081,657
Entity Central Index Key	0001053507
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Amendment Flag	false
Common Stock, $0.01 par value
Document Information [Line Items]
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	AMT
Security Exchange Name	NYSE
1.375% Senior Notes due 2025
Document Information [Line Items]
Title of 12(b) Security	1.375% Senior Notes due 2025
Trading Symbol	AMT 25A
Security Exchange Name	NYSE
1.950% Senior Notes due 2026
Document Information [Line Items]
Title of 12(b) Security	1.950% Senior Notes due 2026
Trading Symbol	AMT 26B
Security Exchange Name	NYSE
0.450% Senior Notes due 2027
Document Information [Line Items]
Title of 12(b) Security	0.450% Senior Notes due 2027
Trading Symbol	AMT 27C
Security Exchange Name	NYSE
0.400% Senior Notes due 2027
Document Information [Line Items]
Title of 12(b) Security	0.400% Senior Notes due 2027
Trading Symbol	AMT 27D
Security Exchange Name	NYSE
4.125% Senior Notes due 2027
Document Information [Line Items]
Title of 12(b) Security	4.125% Senior Notes due 2027
Trading Symbol	AMT 27F
Security Exchange Name	NYSE
0.500% Senior Notes due 2028
Document Information [Line Items]
Title of 12(b) Security	0.500% Senior Notes due 2028
Trading Symbol	AMT 28A
Security Exchange Name	NYSE
0.875% Senior Notes due 2029
Document Information [Line Items]
Title of 12(b) Security	0.875% Senior Notes due 2029
Trading Symbol	AMT 29B
Security Exchange Name	NYSE
0.950% Senior Notes due 2030
Document Information [Line Items]
Title of 12(b) Security	0.950% Senior Notes due 2030
Trading Symbol	AMT 30C
Security Exchange Name	NYSE
3.900% Senior Notes due 2030
Document Information [Line Items]
Title of 12(b) Security	3.900% Senior Notes due 2030
Trading Symbol	AMT 30D
Security Exchange Name	NYSE
4.625% Senior Notes due 2031
Document Information [Line Items]
Title of 12(b) Security	4.625% Senior Notes due 2031
Trading Symbol	AMT 31B
Security Exchange Name	NYSE
1.000% Senior Notes due 2032
Document Information [Line Items]
Title of 12(b) Security	1.000% Senior Notes due 2032
Trading Symbol	AMT 32
Security Exchange Name	NYSE
1.250% Senior Notes due 2033
Document Information [Line Items]
Title of 12(b) Security	1.250% Senior Notes due 2033
Trading Symbol	AMT 33
Security Exchange Name	NYSE
4.100% Senior Notes due 2034
Document Information [Line Items]
Title of 12(b) Security	4.100% Senior Notes due 2034
Trading Symbol	AMT 34A
Security Exchange Name	NYSE

XML

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
CURRENT ASSETS:
Cash and cash equivalents	$ 2,492.1	$ 1,973.3
Restricted cash	126.5	120.1
Accounts receivable, net	712.3	669.7
Prepaid and other current assets	783.2	946.9
Total current assets	4,114.1	3,710.0
PROPERTY AND EQUIPMENT, net	19,927.7	19,788.8
GOODWILL	12,483.1	12,639.0
OTHER INTANGIBLE ASSETS, net	15,759.1	16,520.7
DEFERRED TAX ASSET	139.2	179.1
DEFERRED RENT ASSET	3,649.5	3,521.8
RIGHT-OF-USE ASSET	9,012.1	8,878.8
NOTES RECEIVABLE AND OTHER NON-CURRENT ASSETS	753.0	789.4
TOTAL	65,837.8	66,027.6
CURRENT LIABILITIES:
Accounts payable	206.0	258.7
Accrued expenses	1,166.2	1,280.6
Distributions payable	778.1	906.2
Accrued interest	314.1	387.0
Current portion of operating lease liability	703.4	794.6
Current portion of long-term obligations	3,329.2	3,187.5
Unearned revenue	391.7	434.7
Total current liabilities	6,888.7	7,249.3
LONG-TERM OBLIGATIONS	35,639.2	35,734.0
OPERATING LEASE LIABILITY	7,717.7	7,438.7
ASSET RETIREMENT OBLIGATIONS	2,562.3	2,158.2
DEFERRED TAX LIABILITY	1,399.3	1,361.4
OTHER NON-CURRENT LIABILITIES	1,207.1	1,220.6
Total liabilities	55,414.3	55,162.2
COMMITMENTS AND CONTINGENCIES
EQUITY (shares in thousands):
Common stock: $0.01 par value; 1,000,000 shares authorized; 478,081 and 477,300 shares issued; and 467,077 and 466,296 shares outstanding, respectively	4.8	4.8
Additional paid-in capital	14,955.0	14,872.9
Distributions in excess of earnings	(3,340.8)	(3,638.8)
Accumulated other comprehensive loss	(6,461.8)	(5,739.5)
Treasury stock (11,004 shares at cost)	(1,301.2)	(1,301.2)
Total American Tower Corporation equity	3,856.0	4,198.2
Noncontrolling interests	6,567.5	6,667.2
Total equity	10,423.5	10,865.4
TOTAL	$ 65,837.8	$ 66,027.6

XML

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	478,081,000	477,300,000
Common stock, shares outstanding (in shares)	467,077,000	466,296,000
Treasury stock, shares (in shares)	11,004,000	11,004,000

XML

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
REVENUES:
Total operating revenues	$ 2,900.3	$ 2,771.7	$ 5,734.4	$ 5,538.9
Costs of operations (exclusive of items shown separately below):
Property	799.9	810.1	1,574.3	1,597.1
Depreciation, amortization and accretion	561.7	764.6	1,111.1	1,558.7
Selling, general, administrative and development expense	234.3	244.4	491.3	508.3
Other operating (income) expense	(1.9)	61.7	0.9	189.2
Total operating expenses	1,616.0	1,898.0	3,213.5	3,889.6
OPERATING INCOME	1,284.3	873.7	2,520.9	1,649.3
OTHER INCOME (EXPENSE):
Interest income	43.7	30.6	91.7	61.4
Interest expense	(365.4)	(348.1)	(732.1)	(688.3)
Loss on retirement of long-term obligations	0.0	(0.3)	0.0	(0.3)
Other income (expense) (including foreign currency (losses) gains of $(21.7), $(107.6), $105.9 and $(191.7) respectively)	65.8	(81.2)	178.8	(179.0)
Total other expense	(255.9)	(399.0)	(461.6)	(806.2)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	1,028.4	474.7	2,059.3	843.1
Income tax provision	(120.0)	(13.2)	(229.2)	(66.6)
NET INCOME	908.4	461.5	1,830.1	776.5
Net (income) loss attributable to noncontrolling interests	(8.1)	14.2	(12.4)	35.0
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS, BASIC	900.3	475.7	1,817.7	811.5
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS, DILUTED	$ 900.3	$ 475.7	$ 1,817.7	$ 811.5
NET INCOME PER COMMON SHARE AMOUNTS:
Basic net income attributable to American Tower Corporation common stockholders (in dollars per share)	$ 1.93	$ 1.02	$ 3.89	$ 1.74
Diluted net income attributable to American Tower Corporation common stockholders (in dollars per share)	$ 1.92	$ 1.02	$ 3.89	$ 1.74
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING (in thousands):
BASIC (in shares)	467,038	466,087	466,778	465,915
DILUTED (in shares)	467,781	466,979	467,793	466,939
Property
REVENUES:
Total operating revenues	$ 2,852.9	$ 2,728.6	$ 5,656.8	$ 5,443.1
Services
REVENUES:
Total operating revenues	47.4	43.1	77.6	95.8
Costs of operations (exclusive of items shown separately below):
Services	$ 22.0	$ 17.2	$ 35.9	$ 36.3

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CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Statement [Abstract]
Foreign currency (losses) gains	$ (21.7)	$ (107.6)	$ 105.9	$ (191.7)

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 908.4	$ 461.5	$ 1,830.1	$ 776.5
Other comprehensive (loss) income:
Foreign currency translation adjustments, net of tax (benefit) expense of $(0.1), $0.2, $(0.3), and $0.2, respectively	(410.8)	(13.6)	(842.0)	218.5
Other comprehensive (loss) income	(410.8)	(13.6)	(842.0)	218.5
Comprehensive income	497.6	447.9	988.1	995.0
Comprehensive loss (income) attributable to noncontrolling interests	18.9	(6.7)	107.3	(25.8)
Comprehensive income attributable to American Tower Corporation stockholders	$ 516.5	$ 441.2	$ 1,095.4	$ 969.2

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Foreign currency translation adjustments, tax (benefit) expense	$ (0.1)	$ 0.2	$ (0.3)	$ 0.2

XML

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 1,830.1	$ 776.5
Adjustments to reconcile net income to cash provided by operating activities
Depreciation, amortization and accretion	1,111.1	1,558.7
Stock-based compensation expense	111.2	114.9
Loss on early retirement of long-term obligations	0.0	0.3
Other non-cash items reflected in statements of operations	(34.5)	366.0
Increase in net deferred rent balances	(152.7)	(232.8)
Right-of-use asset and Operating lease liability, net	31.3	(62.7)
Changes in unearned revenue	(32.3)	46.5
Increase in assets	(119.2)	(238.1)
Decrease in liabilities	(122.9)	(49.4)
Cash provided by operating activities	2,622.1	2,279.9
CASH FLOWS FROM INVESTING ACTIVITIES
Payments for purchase of property and equipment and construction activities	(721.9)	(882.8)
Payments for acquisitions, net of cash acquired	(55.0)	(91.2)
Proceeds from sale of short-term investments and other non-current assets	251.5	6.9
Deposits and other	0.1	250.6
Cash used for investing activities	(525.3)	(716.5)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from short-term borrowings, net	8.7	146.2
Borrowings under credit facilities	5,097.9	4,780.0
Proceeds from issuance of senior notes, net	2,374.1	4,182.3
Proceeds from issuance of securities in securitization transaction	0.0	1,300.0
Repayments of notes payable, credit facilities, senior notes, secured debt, term loans and finance leases	(7,189.7)	(10,409.6)
Distributions to noncontrolling interest holders	(189.2)	(22.7)
Contributions from noncontrolling interest holders	102.5	1.9
Proceeds from stock options and employee stock purchase plan	23.7	10.3
Distributions paid on common stock	(1,559.2)	(1,461.3)
Deferred financing costs and other financing activities	(86.9)	(100.9)
Cash used for financing activities	(1,418.1)	(1,573.8)
Net effect of changes in foreign currency exchange rates on cash and cash equivalents, and restricted cash	(153.5)	19.1
NET INCREASE IN CASH AND CASH EQUIVALENTS, AND RESTRICTED CASH	525.2	8.7
CASH AND CASH EQUIVALENTS, AND RESTRICTED CASH, BEGINNING OF PERIOD	2,093.4	2,140.7
CASH AND CASH EQUIVALENTS, AND RESTRICTED CASH, END OF PERIOD	2,618.6	2,149.4
CASH PAID FOR INCOME TAXES (NET OF REFUNDS OF $9.2 AND $21.9, RESPECTIVELY)	179.2	131.1
CASH PAID FOR INTEREST	803.1	681.4
NON-CASH INVESTING AND FINANCING ACTIVITIES:
Purchases of property and equipment under finance leases and perpetual easements	8.3	16.2
Decrease in accounts payable and accrued expenses for purchases of property and equipment and construction activities	(56.4)	(65.1)
Distributions to noncontrolling interest holders	(49.9)	0.0
Contributions from noncontrolling interest holders	49.9	0.0
Contribution to equity method investment	$ 14.6	$ 0.0

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Statement of Cash Flows [Abstract]
Income tax refunds	$ 9.2	$ 21.9

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CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Thousands, $ in Millions	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Distributions in Excess of Earnings	Noncontrolling Interests
Balance at beginning of period, common stock (in shares) at Dec. 31, 2022		476,623
Balance at beginning of period at Dec. 31, 2022	$ 12,408.5	$ 4.8	$ (1,301.2)	$ 14,689.0	$ (5,718.3)	$ (2,101.9)	$ 6,836.1
Balance at beginning of period, treasury stock (in shares) at Dec. 31, 2022			(11,004)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation related activity (in shares)		463
Stock-based compensation related activity	82.0	$ 0.0		82.0
Issuance of common stock-stock purchase plan (in shares)		52
Issuance of common stock- stock purchase plan	8.2	$ 0.0		8.2
Foreign currency translation adjustment, net of tax	218.5				157.7		60.8
Contributions from noncontrolling interest holders	10.5						10.5
Distributions to noncontrolling interest holders	(31.6)						(31.6)
Common stock distributions declared	(1,465.4)					(1,465.4)
Net income (loss)	776.5					811.5	(35.0)
Balance at end of period, common stock (in shares) at Jun. 30, 2023		477,138
Balance at end of period at Jun. 30, 2023	12,007.2	$ 4.8	$ (1,301.2)	14,779.2	(5,560.6)	(2,755.8)	6,840.8
Balance at end of period, treasury stock (in shares) at Jun. 30, 2023			(11,004)
Balance at beginning of period, common stock (in shares) at Mar. 31, 2023		477,042
Balance at beginning of period at Mar. 31, 2023	12,250.3	$ 4.8	$ (1,301.2)	14,725.6	(5,526.1)	(2,496.5)	6,843.7
Balance at beginning of period, treasury stock (in shares) at Mar. 31, 2023			(11,004)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation related activity (in shares)		44
Stock-based compensation related activity	45.4	$ 0.0		45.4
Issuance of common stock-stock purchase plan (in shares)		52
Issuance of common stock- stock purchase plan	8.2	$ 0.0		8.2
Foreign currency translation adjustment, net of tax	(13.6)				(34.5)		20.9
Contributions from noncontrolling interest holders	10.5						10.5
Distributions to noncontrolling interest holders	(20.1)						(20.1)
Common stock distributions declared	(735.0)					(735.0)
Net income (loss)	461.5					475.7	(14.2)
Balance at end of period, common stock (in shares) at Jun. 30, 2023		477,138
Balance at end of period at Jun. 30, 2023	$ 12,007.2	$ 4.8	$ (1,301.2)	14,779.2	(5,560.6)	(2,755.8)	6,840.8
Balance at end of period, treasury stock (in shares) at Jun. 30, 2023			(11,004)
Balance at beginning of period, common stock (in shares) at Dec. 31, 2023	466,296	477,300
Balance at beginning of period at Dec. 31, 2023	$ 10,865.4	$ 4.8	$ (1,301.2)	14,872.9	(5,739.5)	(3,638.8)	6,667.2
Balance at beginning of period, treasury stock (in shares) at Dec. 31, 2023	(11,004)		(11,004)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation related activity (in shares)		729
Stock-based compensation related activity	$ 73.4	$ 0.0		73.4
Issuance of common stock-stock purchase plan (in shares)		52
Issuance of common stock- stock purchase plan	8.7	$ 0.0		8.7
Foreign currency translation adjustment, net of tax	(842.0)				(722.3)		(119.7)
Contributions from noncontrolling interest holders	152.4						152.4
Distributions to noncontrolling interest holders	(144.8)						(144.8)
Common stock distributions declared	(1,519.7)					(1,519.7)
Net income (loss)	$ 1,830.1					1,817.7	12.4
Balance at end of period, common stock (in shares) at Jun. 30, 2024	467,077	478,081
Balance at end of period at Jun. 30, 2024	$ 10,423.5	$ 4.8	$ (1,301.2)	14,955.0	(6,461.8)	(3,340.8)	6,567.5
Balance at end of period, treasury stock (in shares) at Jun. 30, 2024	(11,004)		(11,004)
Balance at beginning of period, common stock (in shares) at Mar. 31, 2024		477,968
Balance at beginning of period at Mar. 31, 2024	$ 10,661.7	$ 4.8	$ (1,301.2)	14,903.4	(6,078.0)	(3,481.2)	6,613.9
Balance at beginning of period, treasury stock (in shares) at Mar. 31, 2024			(11,004)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation related activity (in shares)		61
Stock-based compensation related activity	42.9	$ 0.0		42.9
Issuance of common stock-stock purchase plan (in shares)		52
Issuance of common stock- stock purchase plan	8.7	$ 0.0		8.7
Foreign currency translation adjustment, net of tax	(410.8)				(383.8)		(27.0)
Contributions from noncontrolling interest holders	13.5						13.5
Distributions to noncontrolling interest holders	(41.0)						(41.0)
Common stock distributions declared	(759.9)					(759.9)
Net income (loss)	$ 908.4					900.3	8.1
Balance at end of period, common stock (in shares) at Jun. 30, 2024	467,077	478,081
Balance at end of period at Jun. 30, 2024	$ 10,423.5	$ 4.8	$ (1,301.2)	$ 14,955.0	$ (6,461.8)	$ (3,340.8)	$ 6,567.5
Balance at end of period, treasury stock (in shares) at Jun. 30, 2024	(11,004)		(11,004)

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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES

6 Months Ended

Jun. 30, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES

The accompanying consolidated and condensed consolidated financial statements have been prepared by American Tower Corporation (together with its subsidiaries, “ATC” or the “Company”) pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). The financial information included herein is unaudited. However, the Company believes that all adjustments, which are of a normal and recurring nature, considered necessary for a fair presentation of its financial position and results of operations for such periods have been included herein. The consolidated and condensed consolidated financial statements and related notes should be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2023 (the “2023 Form 10-K”). The results of operations for the three and six months ended June 30, 2024 are not necessarily indicative of the results that may be expected for the entire year.

Principles of Consolidation and Basis of Presentation—The accompanying consolidated and condensed consolidated financial statements include the accounts of the Company and those entities in which it has a controlling interest. Investments in entities that the Company does not control are accounted for using the equity method or as investments in equity securities, depending upon the Company’s ability to exercise significant influence over operating and financial policies. All intercompany accounts and transactions have been eliminated.

As of June 30, 2024, the Company holds (i) a 52% controlling interest in subsidiaries whose holdings consist of the Company’s operations in France, Germany and Spain (such subsidiaries collectively, “ATC Europe”) (Allianz and CDPQ (each as defined in note 11) hold the noncontrolling interests), (ii) a 51% controlling interest in a joint venture whose holdings consist of the Company’s operations in Bangladesh (Confidence Tower Holdings Ltd. (“Confidence Group”) holds the noncontrolling interest) and (iii) a controlling common equity interest of approximately 72% in the Company’s U.S. data center business (Stonepeak (as defined and further discussed in note 11) holds approximately 28% of the outstanding common equity and 100% of the outstanding mandatorily convertible preferred equity). As of June 30, 2024, ATC Europe holds an 87% and an 83% controlling interest in subsidiaries that consist of the Company’s operations in Germany and Spain, respectively (PGGM holds the noncontrolling interests). See note 11 for a discussion of changes to the Company’s noncontrolling interests during the six months ended June 30, 2024 and 2023.

Pending ATC TIPL Transaction—On January 4, 2024, the Company, through its subsidiaries, ATC Asia Pacific Pte. Ltd. and ATC Telecom Infrastructure Private Limited (“ATC TIPL”), entered into an agreement with Data Infrastructure Trust (“DIT”), an infrastructure investment trust sponsored by an affiliate of Brookfield Asset Management, pursuant to which DIT will acquire a 100% ownership interest in ATC TIPL (the “Pending ATC TIPL Transaction”). Subject to certain pre-closing terms, total aggregate consideration would potentially represent up to approximately 210 billion Indian Rupees (“INR”) (approximately $2.5 billion), including the value of the VIL OCDs and the VIL Shares (each as defined and further discussed in note 7), payments on certain existing customer receivables, the repayment of existing intercompany debt and the repayment, or assumption, of the Company’s existing term loan in India, by DIT. During the six months ended June 30, 2024, the Company sold the VIL Shares and the remaining VIL OCDs (each as discussed in note 7) and ATC TIPL distributed approximately 27.2 billion INR (approximately $325.9 million) to the Company. ATC TIPL expects to make a final distribution of approximately 2.4 billion INR (approximately $28.5 million), which includes the satisfaction of the economic benefit associated with the rights to payments on certain existing customer receivables. Each such distribution will be deducted from the total aggregate consideration to be received by the Company at closing. The Pending ATC TIPL Transaction is expected to close in the second half of 2024, subject to customary closing conditions, including government and regulatory approval.

Reportable Segments—The Company reports its results in seven segments – U.S. & Canada property, Asia-Pacific property, Africa property, Europe property, Latin America property, Data Centers and Services, which are discussed further in note 14.

Significant Accounting Policies—The Company’s significant accounting policies are described in note 1 to the Company’s consolidated financial statements included in the 2023 Form 10-K. There have been no material changes to the Company’s significant accounting policies during the six months ended June 30, 2024, other than those noted below.

Property and Equipment—The Company finalized its review of the estimated useful lives of its tower assets during the six months ended June 30, 2024. The Company now has over 20 years of operating history, and determined that it should modify its current estimates for asset lives based on its historical operating experience. The Company retained an independent consultant to assist the Company in completing this review and analysis. The Company previously depreciated its towers on a straight-line basis over the shorter of the term of the underlying ground lease (including

renewal options) taking into account residual value or the estimated useful life of the tower, which the Company had historically estimated to be 20 years. The Company determined that the estimated useful life of its tower assets is 30 years, before taking into account residual value. Additionally, certain of the Company’s intangible assets are amortized on a similar basis to its tower assets, as the estimated useful lives of such intangible assets correlate to the useful life of the towers. The Company accounted for the changes in the useful lives as a change in accounting estimate under ASC 250 Accounting Changes and Error Corrections, which were recorded prospectively beginning on January 1, 2024. On January 1, 2024, the Company began depreciating its towers and related intangible assets on a straight-line basis over the remaining estimated useful life of the tower, taking into account the extended useful life and residual value. The extension of the asset lives (i) resulted in an approximately $515 million increase in the right of use asset, as additional renewal options may be included, with an offsetting adjustment made to increase the related operating lease liability and (ii) is expected to result in an estimated $730 million decrease in depreciation and amortization expense for the year ended December 31, 2024.

Asset Retirement Obligations—The Company finalized its review of the estimated settlement dates for its asset retirement obligations during the six months ended June 30, 2024. The Company now has over 20 years of operating history, and determined that it should modify its current estimated settlement dates based on its historical operating experience, management’s intent with respect to the assets, and the assets’ estimated useful lives. Based on its review and analysis, the Company concluded that a revision in the estimated settlement dates for its asset retirement obligations was appropriate. The Company accounted for the change in estimated settlement dates as a change in accounting estimate under ASC 250 Accounting Changes and Error Corrections, which was recorded prospectively beginning on January 1, 2024. The extension in the estimated settlement dates (i) resulted in a $470 million increase in the asset retirement obligation liability, with an offsetting adjustment made to the related long-lived tangible asset and an $875 million increase in the estimated undiscounted future cash outlay for asset retirement obligations, and (ii) is expected to result in an estimated $75 million decrease in accretion expense for the year ended December 31, 2024.

Adoption of Highly Inflationary Accounting in Ghana—The Ghanaian economy was deemed to be highly inflationary and, as a result, the Company adopted highly inflationary accounting as of January 1, 2024 for its subsidiary in Ghana. Under highly inflationary accounting, the functional currency of its subsidiary in Ghana will become the U.S. Dollar. All monetary and non-monetary assets and liabilities will be remeasured at the U.S. Dollar to Ghanaian Cedis exchange rate of 1 to 11.95 as of December 31, 2023. These amounts will become the new basis for those assets and liabilities as of January 1, 2024. Non-monetary assets and liabilities, as well as the corresponding income statement activities such as depreciation, amortization and equity, will continue to be measured at the historical exchange rate on December 31, 2023. Gains and losses on foreign currency arising in connection with the remeasurement of local currency denominated monetary assets and liabilities for foreign operating subsidiaries in economies that are deemed to be highly inflationary are reflected in Other expense in the consolidated statements of operations. This change is not expected to have a material impact on the Company’s financial statements, as Ghana’s assets and revenue are approximately 1% and 1% of consolidated assets and revenue, respectively.

Cash and Cash Equivalents and Restricted Cash—The reconciliation of cash and cash equivalents and restricted cash reported within the applicable balance sheet that sum to the total of the same such amounts shown in the statements of cash flows is as follows:

	Six Months Ended June 30,
	2024		2023
Cash and cash equivalents	$	2,492.1	$	2,015.7
Restricted cash	126.5		133.7
Total cash, cash equivalents and restricted cash	$	2,618.6	$	2,149.4

Revenue—The Company’s revenue is derived from leasing the right to use its communications sites, the land on which the sites are located, the land underlying its customers’ sites and the space in its data center facilities (the “lease component”) and from the reimbursement of costs incurred by the Company in operating the communications sites and data center facilities and supporting its customers’ equipment as well as other services and contractual rights (the “non-lease component”). Most of the Company’s revenue is derived from leasing arrangements and is accounted for as lease revenue unless the timing and pattern of revenue recognition of the non-lease component differs from the lease component. If the timing and pattern of the non-lease component revenue recognition differs from that of the lease component, the Company separately determines the stand-alone selling prices and pattern of revenue recognition for each performance obligation. Revenue related to distributed antenna system (“DAS”) networks and fiber and other related assets results from agreements with customers that are generally not accounted for as leases.

Non-lease property revenue—Non-lease property revenue consists primarily of revenue generated from DAS networks, fiber and other property related revenue. DAS networks and fiber arrangements generally require that the Company provide the tenant the right to use available capacity on the applicable communications infrastructure. Performance obligations are satisfied over time for the duration of the arrangements. Non-lease property revenue also includes revenue generated from interconnection offerings in the Company’s data center facilities. Interconnection offerings are generally contracted on a month-to-month basis and are cancellable by the Company or the data center customer at any time. Performance obligations are satisfied over time for the duration of the arrangements. Other property related revenue streams, which include site inspections, are not material on either an individual or consolidated basis. There were no material changes in the receivables, contract assets and contract liabilities from contracts with customers for the three and six months ended June 30, 2024.

Services revenue—The Company offers tower-related services in the United States. These services include site application, zoning and permitting (“AZP”), structural and mount analyses, and construction management. There is a single performance obligation related to AZP and construction management, and revenue is recognized over time based on milestones achieved, which are determined based on costs expected to be incurred. Structural and mount analyses services may have more than one performance obligation, contingent upon the number of contracted services. Revenue is recognized at the point in time the services are completed.

A summary of revenue disaggregated by source and geography is as follows:

Three Months Ended June 30, 2024	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers		Total
Non-lease property revenue	$	77.2	$	2.2	$	6.2	$	5.2	$	27.6	$	32.8	$	151.2
Services revenue	47.4		—		—		—		—		—		47.4
Total non-lease revenue	$	124.6	$	2.2	$	6.2	$	5.2	$	27.6	$	32.8	$	198.6
Property lease revenue	1,238.2		358.7		287.7		198.0		421.1		198.0		2,701.7
Total revenue	$	1,362.8	$	360.9	$	293.9	$	203.2	$	448.7	$	230.8	$	2,900.3

Three Months Ended June 30, 2023	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers		Total
Non-lease property revenue	$	83.9	$	2.4	$	5.9	$	4.1	$	28.5	$	28.3	$	153.1
Services revenue	43.1		—		—		—		—		—		43.1
Total non-lease revenue	$	127.0	$	2.4	$	5.9	$	4.1	$	28.5	$	28.3	$	196.2
Property lease revenue	1,219.3		259.3		315.3		194.1		410.9		176.6		2,575.5
Total revenue	$	1,346.3	$	261.7	$	321.2	$	198.2	$	439.4	$	204.9	$	2,771.7

Six Months Ended June 30, 2024	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers		Total
Non-lease property revenue	$	150.1	$	4.4	$	12.3	$	8.7	$	56.3	$	64.4	$	296.2
Services revenue	77.6		—		—		—		—		—		77.6
Total non-lease revenue	$	227.7	$	4.4	$	12.3	$	8.7	$	56.3	$	64.4	$	373.8
Property lease revenue	2,476.0		683.1		573.6		399.0		837.9		391.0		5,360.6
Total revenue	$	2,703.7	$	687.5	$	585.9	$	407.7	$	894.2	$	455.4	$	5,734.4

Six Months Ended June 30, 2023	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers		Total
Non-lease property revenue	$	154.9	$	4.7	$	12.6	$	7.5	$	69.8	$	56.6	$	306.1
Services revenue	95.8		—		—		—		—		—		95.8
Total non-lease revenue	$	250.7	$	4.7	$	12.6	$	7.5	$	69.8	$	56.6	$	401.9
Property lease revenue	2,435.9		508.1		625.6		382.4		833.7		351.3		5,137.0
Total revenue	$	2,686.6	$	512.8	$	638.2	$	389.9	$	903.5	$	407.9	$	5,538.9

Property revenue for the three months ended June 30, 2024 and 2023 includes straight-line revenue of $73.7 million and $120.8 million, respectively. Property revenue for the six months ended June 30, 2024 and 2023 includes straight-line revenue of $152.7 million and $232.8 million, respectively.

The Company actively monitors the creditworthiness of its customers. In recognizing customer revenue, the Company assesses the collectibility of both the amounts billed and the portion recognized in advance of billing on a straight-line basis. This assessment takes customer credit risk and business and industry conditions into consideration to ultimately determine the collectibility of the amounts billed. To the extent the amounts, based on management’s estimates, may not be collectible, revenue recognition is deferred until such point as collectibility is determined to be reasonably assured.

During the three and six months ended June 30, 2023, the Company deferred recognition of revenue of approximately $31.7 million and $64.7 million, respectively, related to a customer in India. During the three and six months ended June 30, 2024, the Company recognized approximately $66.7 million and $95.7 million, respectively, of this previously deferred revenue. As of June 30, 2024, the Company has fully recognized this previously deferred revenue related to a customer in India.

Stonepeak Development Partnership— During the three months ended June 30, 2024, the Company entered into an agreement with Stonepeak (as defined in note 11) to form a joint venture to construct a new data center in Denver, CO (the “Stonepeak Development Partnership”). At formation, the Company contributed assets with a value of $14.6 million to the Stonepeak Development Partnership and acquired a minority ownership interest (Stonepeak holds the controlling interests). The Company accounts for the Stonepeak Development Partnership as an equity method investment. Under this method, investments are recorded at cost, and are adjusted for the Company’s share of the entities’ income or loss and for distributions and contributions. The investment is recorded in Other non-current assets in the consolidated balance sheets.

Accounting Standards Updates—In November 2023, the Financial Accounting Standards Board (“FASB”) issued guidance, which is intended to improve reportable segment disclosure requirements, primarily through additional disclosures about significant segment expenses. The standard is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. The amendments should be applied retrospectively to all prior periods presented in the financial statements. The Company is currently evaluating the impact of this guidance on its consolidated financial statements and related disclosures.

In December 2023, the FASB issued guidance which requires public entities to provide enhanced income tax disclosures on an annual basis. The new guidance requires an expanded rate reconciliation and the disaggregation of cash taxes paid by U.S. federal, U.S. state and foreign jurisdictions. The updated guidance is effective for fiscal years beginning after December 15, 2024, with early adoption permitted. The Company is currently evaluating the impact of this guidance on its consolidated financial statements and related disclosures.

SEC Rule Changes— In March 2024, the SEC issued Final Rule No. 33-11275, “The Enhancement and Standardization of Climate-Related Disclosures for Investors.” If such rule remains in effect, the rule will require registrants to provide certain climate-related information in their registration statements and annual reports. The rule requires registrants to provide climate related disclosures, including, but not limited to, (i) material Scope 1 and Scope 2 greenhouse gas emissions, (ii) governance and oversight of material climate-related risks, (iii) the material impact of climate risks on the registrant’s strategy, business model and outlook, (iv) risk management processes for material climate-related risks and (v) material climate targets and goals. The rule also requires disclosure of (x) financial statement effects of severe weather events and other natural conditions, (y) carbon offset and renewable energy credit information and (z) the impact of severe weather events and other natural conditions on estimates and assumptions. Disclosure requirements will begin phasing in for fiscal years beginning on or after January 1, 2025. In April 2024, the SEC issued an order staying implementation of such rule pending the resolution of certain challenges. The outcome of ongoing litigation is currently unknown. The Company is currently evaluating the potential impact of such rule on its consolidated financial statements and disclosures.

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PREPAID AND OTHER CURRENT ASSETS

6 Months Ended

Jun. 30, 2024

Prepaid Expense and Other Assets, Current [Abstract]

PREPAID AND OTHER CURRENT ASSETS

PREPAID AND OTHER CURRENT ASSETS

Prepaid and other current assets consisted of the following:

	As of
	June 30, 2024		December 31, 2023
Prepaid assets	$	111.4	$	93.4
Prepaid income tax	151.2		102.9
Unbilled receivables	362.7		323.2
Value added tax and other consumption tax receivables	41.9		79.8
Other miscellaneous current assets (1)	116.0		347.6
Prepaid and other current assets	$	783.2	$	946.9

_______________

(1)As of December 31, 2023, includes the VIL OCDs (as defined and further discussed in note 7).

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LEASES

6 Months Ended

Jun. 30, 2024

Leases [Abstract]

LEASES

LEASES

The Company determines if an arrangement is a lease at the inception of the agreement. The Company considers an arrangement to be a lease if it conveys the right to control the use of the communications infrastructure or ground space underneath communications infrastructure for a period of time in exchange for consideration. The Company is both a lessor and a lessee.

During the six months ended June 30, 2024, the Company made no changes to the methods described in note 4 to its consolidated financial statements included in the 2023 Form 10-K. As of June 30, 2024, the Company does not have any material related party leases as either a lessor or a lessee. To the extent there are any intercompany leases, these are eliminated in consolidation.

If incentives are present in the Company’s leases, they are evaluated to determine proper treatment and, to the extent present, are recorded in Other current assets and Other non-current assets in the consolidated balance sheets and amortized on a straight line basis over the corresponding lease term as a non-cash reduction to revenue. As of June 30, 2024, the remaining weighted average amortization period of the Company’s lease incentives was 10 years. As of June 30, 2024, Other current assets and Other non-current assets include $35.8 million and $333.0 million, respectively, for lease incentives.

Lessor— Historically, the Company has been able to successfully renew its applicable leases as needed to ensure continuation of its revenue. Accordingly, the Company assumes that it will have access to the communications infrastructure or ground space underlying its sites when calculating future minimum rental receipts through the end of the respective terms. Future minimum rental receipts expected under non-cancellable operating lease agreements as of June 30, 2024 were as follows:

Fiscal Year	Amount (1) (2)
Remainder of 2024	$	4,158.7
2025	7,845.4
2026	7,341.0
2027	7,112.4
2028	5,793.3
Thereafter	24,931.3
Total	$	57,182.1

_______________

(1)Balances are translated at the applicable period-end exchange rate, which may impact comparability between periods.    

(2)Balances represent contractual amounts owed with no adjustments made for expected collectibility.

Lessee—The Company assesses its right-of-use asset and other lease-related assets for impairment, as described in note 1 to the Company’s consolidated financial statements included in the 2023 Form 10-K. There were no material impairments recorded related to these assets during the three and six months ended June 30, 2024 and 2023.

The Company leases certain land, buildings, equipment and office space under operating leases and land and improvements, towers, equipment and vehicles under finance leases. As of June 30, 2024, operating lease assets were

included in Right-of-use asset and finance lease assets were included in Property and equipment, net in the consolidated balance sheet. During the six months ended June 30, 2024, there were no material changes in the terms and provisions of the Company’s operating leases in which the Company is a lessee, other than those related to the change in estimated useful lives as described in note 1. As a result of the change in estimated useful lives of its assets, the Company reviewed its lease portfolio to determine whether additional renewal options were likely to be exercised. The Company concluded that these incremental renewals were lease modifications and has accounted for them accordingly. The extension of the asset lives resulted in an approximately $515 million increase in the right of use asset, as additional renewal options may be included, with an offsetting adjustment made to increase the related operating lease liability. There were no material changes in finance lease assets and liabilities during the six months ended June 30, 2024.

Information about other lease-related balances is as follows:

	As of
	June 30, 2024		December 31, 2023
Operating leases:
Right-of-use asset	$	9,012.1	$	8,878.8
Current portion of lease liability	$	703.4	$	794.6
Lease liability	7,717.7		7,438.7
Total operating lease liability	$	8,421.1	$	8,233.3

The weighted-average remaining lease terms and incremental borrowing rates are as follows:

	As of
	June 30, 2024		December 31, 2023
Operating leases:
Weighted-average remaining lease term (years) (1)	13.4		11.6
Weighted-average incremental borrowing rate	6.7	%	5.8	%

______________

(1)As of June 30, 2024, reflects the change in estimated useful lives as described in note 1.

The following table sets forth the components of lease cost:

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Operating lease cost	$	327.0	$	313.9	$	653.4	$	620.6
Variable lease costs not included in lease liability (1)	93.7		114.5		182.9		223.6

______________

(1)Primarily includes property tax paid on behalf of the landlord.

Supplemental cash flow information is as follows:

	Six Months Ended June 30,
	2024		2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	(673.4)	$	(641.5)
Non-cash items:
New operating leases (1)	$	78.8	$	113.9
Operating lease modifications and reassessments (2)	$	713.8	$	191.3

______________

(1)Amount includes new operating leases and leases acquired in connection with acquisitions.

(2)For the six months ended June 30, 2024, reflects the change in estimated useful lives as described in note 1.

As of June 30, 2024, the Company does not have material operating or financing leases that have not yet commenced.

Maturities of operating lease liabilities as of June 30, 2024 were as follows:

Fiscal Year	Operating Lease (1)
Remainder of 2024	$	592.6
2025	1,114.8
2026	1,062.0
2027	1,005.2
2028	945.4
Thereafter	8,306.9
Total lease payments	13,026.9
Less amounts representing interest	(4,605.8)
Total lease liability	8,421.1
Less current portion of lease liability	703.4
Non-current lease liability	$	7,717.7

_______________

(1)Balances are translated at the applicable period-end exchange rate, which may impact comparability between periods.

LEASES

LEASES

The Company determines if an arrangement is a lease at the inception of the agreement. The Company considers an arrangement to be a lease if it conveys the right to control the use of the communications infrastructure or ground space underneath communications infrastructure for a period of time in exchange for consideration. The Company is both a lessor and a lessee.

During the six months ended June 30, 2024, the Company made no changes to the methods described in note 4 to its consolidated financial statements included in the 2023 Form 10-K. As of June 30, 2024, the Company does not have any material related party leases as either a lessor or a lessee. To the extent there are any intercompany leases, these are eliminated in consolidation.

If incentives are present in the Company’s leases, they are evaluated to determine proper treatment and, to the extent present, are recorded in Other current assets and Other non-current assets in the consolidated balance sheets and amortized on a straight line basis over the corresponding lease term as a non-cash reduction to revenue. As of June 30, 2024, the remaining weighted average amortization period of the Company’s lease incentives was 10 years. As of June 30, 2024, Other current assets and Other non-current assets include $35.8 million and $333.0 million, respectively, for lease incentives.

Lessor— Historically, the Company has been able to successfully renew its applicable leases as needed to ensure continuation of its revenue. Accordingly, the Company assumes that it will have access to the communications infrastructure or ground space underlying its sites when calculating future minimum rental receipts through the end of the respective terms. Future minimum rental receipts expected under non-cancellable operating lease agreements as of June 30, 2024 were as follows:

Fiscal Year	Amount (1) (2)
Remainder of 2024	$	4,158.7
2025	7,845.4
2026	7,341.0
2027	7,112.4
2028	5,793.3
Thereafter	24,931.3
Total	$	57,182.1

_______________

(1)Balances are translated at the applicable period-end exchange rate, which may impact comparability between periods.    

(2)Balances represent contractual amounts owed with no adjustments made for expected collectibility.

Lessee—The Company assesses its right-of-use asset and other lease-related assets for impairment, as described in note 1 to the Company’s consolidated financial statements included in the 2023 Form 10-K. There were no material impairments recorded related to these assets during the three and six months ended June 30, 2024 and 2023.

The Company leases certain land, buildings, equipment and office space under operating leases and land and improvements, towers, equipment and vehicles under finance leases. As of June 30, 2024, operating lease assets were

included in Right-of-use asset and finance lease assets were included in Property and equipment, net in the consolidated balance sheet. During the six months ended June 30, 2024, there were no material changes in the terms and provisions of the Company’s operating leases in which the Company is a lessee, other than those related to the change in estimated useful lives as described in note 1. As a result of the change in estimated useful lives of its assets, the Company reviewed its lease portfolio to determine whether additional renewal options were likely to be exercised. The Company concluded that these incremental renewals were lease modifications and has accounted for them accordingly. The extension of the asset lives resulted in an approximately $515 million increase in the right of use asset, as additional renewal options may be included, with an offsetting adjustment made to increase the related operating lease liability. There were no material changes in finance lease assets and liabilities during the six months ended June 30, 2024.

Information about other lease-related balances is as follows:

	As of
	June 30, 2024		December 31, 2023
Operating leases:
Right-of-use asset	$	9,012.1	$	8,878.8
Current portion of lease liability	$	703.4	$	794.6
Lease liability	7,717.7		7,438.7
Total operating lease liability	$	8,421.1	$	8,233.3

The weighted-average remaining lease terms and incremental borrowing rates are as follows:

	As of
	June 30, 2024		December 31, 2023
Operating leases:
Weighted-average remaining lease term (years) (1)	13.4		11.6
Weighted-average incremental borrowing rate	6.7	%	5.8	%

______________

(1)As of June 30, 2024, reflects the change in estimated useful lives as described in note 1.

The following table sets forth the components of lease cost:

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Operating lease cost	$	327.0	$	313.9	$	653.4	$	620.6
Variable lease costs not included in lease liability (1)	93.7		114.5		182.9		223.6

______________

(1)Primarily includes property tax paid on behalf of the landlord.

Supplemental cash flow information is as follows:

	Six Months Ended June 30,
	2024		2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	(673.4)	$	(641.5)
Non-cash items:
New operating leases (1)	$	78.8	$	113.9
Operating lease modifications and reassessments (2)	$	713.8	$	191.3

______________

(1)Amount includes new operating leases and leases acquired in connection with acquisitions.

(2)For the six months ended June 30, 2024, reflects the change in estimated useful lives as described in note 1.

As of June 30, 2024, the Company does not have material operating or financing leases that have not yet commenced.

Maturities of operating lease liabilities as of June 30, 2024 were as follows:

Fiscal Year	Operating Lease (1)
Remainder of 2024	$	592.6
2025	1,114.8
2026	1,062.0
2027	1,005.2
2028	945.4
Thereafter	8,306.9
Total lease payments	13,026.9
Less amounts representing interest	(4,605.8)
Total lease liability	8,421.1
Less current portion of lease liability	703.4
Non-current lease liability	$	7,717.7

_______________

(1)Balances are translated at the applicable period-end exchange rate, which may impact comparability between periods.

LEASES

LEASES

The Company determines if an arrangement is a lease at the inception of the agreement. The Company considers an arrangement to be a lease if it conveys the right to control the use of the communications infrastructure or ground space underneath communications infrastructure for a period of time in exchange for consideration. The Company is both a lessor and a lessee.

During the six months ended June 30, 2024, the Company made no changes to the methods described in note 4 to its consolidated financial statements included in the 2023 Form 10-K. As of June 30, 2024, the Company does not have any material related party leases as either a lessor or a lessee. To the extent there are any intercompany leases, these are eliminated in consolidation.

If incentives are present in the Company’s leases, they are evaluated to determine proper treatment and, to the extent present, are recorded in Other current assets and Other non-current assets in the consolidated balance sheets and amortized on a straight line basis over the corresponding lease term as a non-cash reduction to revenue. As of June 30, 2024, the remaining weighted average amortization period of the Company’s lease incentives was 10 years. As of June 30, 2024, Other current assets and Other non-current assets include $35.8 million and $333.0 million, respectively, for lease incentives.

Lessor— Historically, the Company has been able to successfully renew its applicable leases as needed to ensure continuation of its revenue. Accordingly, the Company assumes that it will have access to the communications infrastructure or ground space underlying its sites when calculating future minimum rental receipts through the end of the respective terms. Future minimum rental receipts expected under non-cancellable operating lease agreements as of June 30, 2024 were as follows:

Fiscal Year	Amount (1) (2)
Remainder of 2024	$	4,158.7
2025	7,845.4
2026	7,341.0
2027	7,112.4
2028	5,793.3
Thereafter	24,931.3
Total	$	57,182.1

_______________

(1)Balances are translated at the applicable period-end exchange rate, which may impact comparability between periods.    

(2)Balances represent contractual amounts owed with no adjustments made for expected collectibility.

Lessee—The Company assesses its right-of-use asset and other lease-related assets for impairment, as described in note 1 to the Company’s consolidated financial statements included in the 2023 Form 10-K. There were no material impairments recorded related to these assets during the three and six months ended June 30, 2024 and 2023.

The Company leases certain land, buildings, equipment and office space under operating leases and land and improvements, towers, equipment and vehicles under finance leases. As of June 30, 2024, operating lease assets were

included in Right-of-use asset and finance lease assets were included in Property and equipment, net in the consolidated balance sheet. During the six months ended June 30, 2024, there were no material changes in the terms and provisions of the Company’s operating leases in which the Company is a lessee, other than those related to the change in estimated useful lives as described in note 1. As a result of the change in estimated useful lives of its assets, the Company reviewed its lease portfolio to determine whether additional renewal options were likely to be exercised. The Company concluded that these incremental renewals were lease modifications and has accounted for them accordingly. The extension of the asset lives resulted in an approximately $515 million increase in the right of use asset, as additional renewal options may be included, with an offsetting adjustment made to increase the related operating lease liability. There were no material changes in finance lease assets and liabilities during the six months ended June 30, 2024.

Information about other lease-related balances is as follows:

	As of
	June 30, 2024		December 31, 2023
Operating leases:
Right-of-use asset	$	9,012.1	$	8,878.8
Current portion of lease liability	$	703.4	$	794.6
Lease liability	7,717.7		7,438.7
Total operating lease liability	$	8,421.1	$	8,233.3

The weighted-average remaining lease terms and incremental borrowing rates are as follows:

	As of
	June 30, 2024		December 31, 2023
Operating leases:
Weighted-average remaining lease term (years) (1)	13.4		11.6
Weighted-average incremental borrowing rate	6.7	%	5.8	%

______________

(1)As of June 30, 2024, reflects the change in estimated useful lives as described in note 1.

The following table sets forth the components of lease cost:

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Operating lease cost	$	327.0	$	313.9	$	653.4	$	620.6
Variable lease costs not included in lease liability (1)	93.7		114.5		182.9		223.6

______________

(1)Primarily includes property tax paid on behalf of the landlord.

Supplemental cash flow information is as follows:

	Six Months Ended June 30,
	2024		2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	(673.4)	$	(641.5)
Non-cash items:
New operating leases (1)	$	78.8	$	113.9
Operating lease modifications and reassessments (2)	$	713.8	$	191.3

______________

(1)Amount includes new operating leases and leases acquired in connection with acquisitions.

(2)For the six months ended June 30, 2024, reflects the change in estimated useful lives as described in note 1.

As of June 30, 2024, the Company does not have material operating or financing leases that have not yet commenced.

Maturities of operating lease liabilities as of June 30, 2024 were as follows:

Fiscal Year	Operating Lease (1)
Remainder of 2024	$	592.6
2025	1,114.8
2026	1,062.0
2027	1,005.2
2028	945.4
Thereafter	8,306.9
Total lease payments	13,026.9
Less amounts representing interest	(4,605.8)
Total lease liability	8,421.1
Less current portion of lease liability	703.4
Non-current lease liability	$	7,717.7

_______________

(1)Balances are translated at the applicable period-end exchange rate, which may impact comparability between periods.

XML

GOODWILL AND OTHER INTANGIBLE ASSETS

6 Months Ended

Jun. 30, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

GOODWILL AND OTHER INTANGIBLE ASSETS

GOODWILL AND OTHER INTANGIBLE ASSETS

The changes in the carrying value of goodwill for each of the Company’s business segments were as follows:

	Property												Services		Total
	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers
Balance as of January 1, 2024	$	4,638.6	$	562.7	$	497.7	$	3,051.9	$	966.1	$	2,920.0	$	2.0	$	12,639.0
Effect of foreign currency translation	(1.6)		(1.7)		14.7		(89.9)		(77.4)		—		—		(155.9)
Balance as of June 30, 2024	$	4,637.0	$	561.0	$	512.4	$	2,962.0	$	888.7	$	2,920.0	$	2.0	$	12,483.1

The Company’s other intangible assets subject to amortization consisted of the following:

		As of June 30, 2024						As of December 31, 2023
	Estimated Useful Lives (years) (1)	Gross Carrying Value		Accumulated Amortization		Net Book Value		Gross Carrying Value		Accumulated Amortization		Net Book Value
Acquired network location intangibles (2)	Up to 30	$	5,867.6	$	(2,803.5)	$	3,064.1	$	5,981.5	$	(2,775.8)	$	3,205.7
Acquired tenant-related intangibles	Up to 30	18,564.2		(6,893.8)		11,670.4		18,894.5		(6,698.6)		12,195.9
Acquired licenses and other intangibles	2-30	1,490.8		(466.2)		1,024.6		1,561.1		(442.0)		1,119.1
Total other intangible assets		$	25,922.6	$	(10,163.5)	$	15,759.1	$	26,437.1	$	(9,916.4)	$	16,520.7

_______________

(1)As of June 30, 2024, reflects the change in estimated useful lives as described in note 1.

(2)Beginning January 1, 2024, acquired network location intangibles are amortized over the remaining estimated useful life of the tower, taking into account residual value, generally up to 30 years, as the Company considers these intangibles to be directly related to the tower assets. Prior to January 1, 2024, acquired network location intangibles were amortized over the shorter of the term of the corresponding ground lease, taking into consideration lease renewal options and residual value, or the estimated useful life of the tower, generally up to 20 years.

The acquired network location intangibles represent the value to the Company of the incremental revenue growth that could potentially be obtained from leasing the excess capacity on acquired tower communications infrastructure. The acquired tenant-related intangibles typically represent the value to the Company of tenant contracts and relationships in place at the time of an acquisition or similar transaction, including assumptions regarding estimated renewals. Other intangibles represent the value of acquired licenses, trade name and in place leases. In place lease value represents the

fair value of costs avoided in securing data center customers, including vacancy periods, legal costs and commissions. In place lease value also includes assumptions on similar costs avoided upon the renewal or extension of existing leases on a basis consistent with occupancy assumptions used in the fair value of other assets.

The Company amortizes its acquired intangible assets on a straight-line basis over their estimated useful lives. As of June 30, 2024, the remaining weighted average amortization period of the Company’s intangible assets was 20 years. Amortization of intangible assets for the three and six months ended June 30, 2024 was $237.3 million and $479.8 million, respectively. Amortization of intangible assets for the three and six months ended June 30, 2023 was $358.2 million and $727.7 million, respectively. Based on current exchange rates, the Company expects to record amortization expense as follows over the remainder of the current year and the five subsequent years:

Fiscal Year	Amount (1)
Remainder of 2024	$	466.0
2025	913.7
2026	875.6
2027	863.7
2028	852.2
2029	833.2

______________

(1)As of June 30, 2024, reflects the change in estimated useful lives as described in note 1.

XML

ACCRUED EXPENSES

6 Months Ended

Jun. 30, 2024

Accrued Liabilities, Current [Abstract]

ACCRUED EXPENSES

ACCRUED EXPENSES

Accrued expenses consisted of the following:

	As of
	June 30, 2024		December 31, 2023
Accrued construction costs	$	145.0	$	183.8
Accrued income tax payable	28.1		21.0
Accrued pass-through costs	99.4		77.4
Amounts payable for acquisitions	2.0		27.7
Amounts payable to tenants	90.5		103.3
Accrued property and real estate taxes	301.9		295.5
Accrued rent	78.3		75.1
Payroll and related withholdings	107.6		147.4
Other accrued expenses	313.4		349.4
Total accrued expenses	$	1,166.2	$	1,280.6

XML

LONG-TERM OBLIGATIONS

6 Months Ended

Jun. 30, 2024

Debt Disclosure [Abstract]

LONG-TERM OBLIGATIONS

LONG-TERM OBLIGATIONS

Outstanding amounts under the Company’s long-term obligations, reflecting discounts, premiums and debt issuance costs, consisted of the following:

	As of
	June 30, 2024		December 31, 2023		Maturity Date
2021 Multicurrency Credit Facility (1) (2)	$	1,170.0	$	723.4	July 1, 2026
2021 Term Loan (1)	997.4		997.0		January 31, 2027
2021 Credit Facility (1)	2,113.4		1,603.4		July 1, 2028
2021 EUR Three Year Delayed Draw Term Loan (1) (2) (3)	—		910.7		N/A
0.600% senior notes (4)	—		500.0		N/A
5.00% senior notes (5)	—		1,000.1		N/A
3.375% senior notes (6)	—		649.7		N/A
2.950% senior notes	649.1		648.2		January 15, 2025
2.400% senior notes	749.1		748.5		March 15, 2025
1.375% senior notes (7)	534.6		550.0		April 4, 2025
4.000% senior notes	748.7		748.1		June 1, 2025

1.300% senior notes	498.8	498.3	September 15, 2025
4.400% senior notes	499.0	498.7	February 15, 2026
1.600% senior notes	698.0	697.4	April 15, 2026
1.950% senior notes (7)	533.8	549.6	May 22, 2026
1.450% senior notes	596.7	595.9	September 15, 2026
3.375% senior notes	995.6	994.7	October 15, 2026
3.125% senior notes	399.1	398.9	January 15, 2027
2.750% senior notes	747.5	747.0	January 15, 2027
0.450% senior notes (7)	800.5	824.3	January 15, 2027
0.400% senior notes (7)	532.6	548.2	February 15, 2027
3.650% senior notes	645.6	644.8	March 15, 2027
4.125% senior notes (7)	639.6	658.6	May 16, 2027
3.55% senior notes	747.5	747.1	July 15, 2027
3.600% senior notes	696.5	696.0	January 15, 2028
0.500% senior notes (7)	799.0	822.8	January 15, 2028
1.500% senior notes	647.5	647.1	January 31, 2028
5.500% senior notes	694.3	693.6	March 15, 2028
5.250% senior notes	644.5	643.9	July 15, 2028
5.800% senior notes	744.0	743.4	November 15, 2028
5.200% senior notes	643.0	—	February 15, 2029
3.950% senior notes	594.2	593.7	March 15, 2029
0.875% senior notes (7)	799.7	823.7	May 21, 2029
3.800% senior notes	1,639.5	1,638.6	August 15, 2029
2.900% senior notes	744.7	744.2	January 15, 2030
3.900% senior notes (7)	530.6	—	May 16, 2030
2.100% senior notes	743.6	743.1	June 15, 2030
0.950% senior notes (7)	530.2	546.0	October 5, 2030
1.875% senior notes	793.8	793.3	October 15, 2030
2.700% senior notes	695.3	695.0	April 15, 2031
4.625% senior notes (7)	529.3	545.2	May 16, 2031
2.300% senior notes	693.1	692.7	September 15, 2031
1.000% senior notes (7)	690.7	711.5	January 15, 2032
4.050% senior notes	643.3	642.9	March 15, 2032
5.650% senior notes	791.0	790.6	March 15, 2033
1.250% senior notes (7)	529.8	545.8	May 21, 2033
5.550% senior notes	841.0	840.6	July 15, 2033
5.900% senior notes	741.8	741.5	November 15, 2033
5.450% senior notes	640.2	—	February 15, 2034
4.100% senior notes (7)	528.3	—	May 16, 2034
3.700% senior notes	592.5	592.4	October 15, 2049
3.100% senior notes	1,038.7	1,038.6	June 15, 2050
2.950% senior notes	1,023.5	1,023.2	January 15, 2051
Total American Tower Corporation debt	36,520.2	36,472.0
Series 2015-2 notes (8)	524.4	524.1	June 16, 2025
Series 2018-1A securities (9)	497.2	496.8	March 15, 2028
Series 2023-1A securities (10)	1,286.2	1,284.4	March 15, 2028
Other subsidiary debt (11)	119.9	123.6	Various
Total American Tower subsidiary debt	2,427.7	2,428.9
Finance lease obligations	20.5	20.6
Total	38,968.4	38,921.5
Less current portion of long-term obligations	(3,329.2)	(3,187.5)

Long-term obligations $ 35,639.2  $ 35,734.0 

_______________

(1)Accrues interest at a variable rate.

(2)As of December 31, 2023 reflects borrowings denominated in Euro (“EUR”) and, for the 2021 Multicurrency Credit Facility (as defined below), reflects borrowings denominated in both EUR and U.S. Dollars (“USD”).

(3)Repaid in full on May 21, 2024 using borrowings under the 2021 Multicurrency Credit Facility.

(4)Repaid in full on January 12, 2024 using borrowings under the 2021 Multicurrency Credit Facility.

(5)Repaid in full on February 14, 2024 using borrowings under the 2021 Multicurrency Credit Facility.

(6)Repaid in full on May 15, 2024 using borrowings under the 2021 Credit Facility.

(7)Notes are denominated in EUR.

(8)Maturity date reflects the anticipated repayment date; final legal maturity is June 15, 2050.

(9)Maturity date reflects the anticipated repayment date; final legal maturity is March 15, 2048.

(10)Maturity date reflects the anticipated repayment date; final legal maturity is March 15, 2053.

(11)Includes borrowings under an unsecured term loan in India (the “India Term Loan”), which is denominated in INR. In January 2024, the Company amended the India Term Loan to extend the maturity date to December 31, 2024. As of December 31, 2023, also includes amounts drawn under letters of credit in Nigeria, which are denominated in USD.

Current portion of long-term obligations—The Company’s current portion of long-term obligations primarily includes (i) $650.0 million aggregate principal amount of the Company’s 2.950% senior unsecured notes due January 15, 2025, (ii) $750.0 million aggregate principal amount of the Company’s 2.400% senior unsecured notes due March 15, 2025, (iii) €500.0 million aggregate principal amount of the Company’s 1.375% senior unsecured notes due April 4, 2025, (iv) $750.0 million aggregate principal amount of the Company’s 4.000% senior unsecured notes due June 1, 2025 and (v) $525.0 million aggregate principal amount of the Company’s Secured Tower Revenue Notes, Series 2015-2, Class A due June 16, 2025.

Securitized Debt—Cash flows generated by the communications sites that secure the securitized debt of the Company are only available for payment of such debt and are not available to pay the Company’s other obligations or the claims of its creditors. However, subject to certain restrictions, the Company holds the right to receive the excess cash flows not needed to service the securitized debt and other obligations arising out of the securitizations. The securitized debt is the obligation of the issuers thereof or borrowers thereunder, as applicable, and their subsidiaries, and not of the Company or its other subsidiaries.

Repayments of Senior Notes

Repayment of 0.600% Senior Notes—On January 12, 2024, the Company repaid $500.0 million aggregate principal amount of the Company’s 0.600% senior unsecured notes due 2024 (the “0.600% Notes”) upon their maturity. The 0.600% Notes were repaid using borrowings under the 2021 Multicurrency Credit Facility. Upon completion of the repayment, none of the 0.600% Notes remained outstanding.

Repayment of 5.00% Senior Notes—On February 14, 2024, the Company repaid $1.0 billion aggregate principal amount of the Company’s 5.00% senior unsecured notes due 2024 (the “5.00% Notes”) upon their maturity. The 5.00% Notes were repaid using borrowings under the 2021 Multicurrency Credit Facility. Upon completion of the repayment, none of the 5.00% Notes remained outstanding.

Repayment of 3.375% Senior Notes—On May 15, 2024, the Company repaid $650.0 million aggregate principal amount of the Company’s 3.375% senior unsecured notes due 2024 (the “3.375% Notes”) upon their maturity. The 3.375% Notes were repaid using borrowings under the 2021 Credit Facility. Upon completion of the repayment, none of the 3.375% Notes remained outstanding.

Offerings of Senior Notes

5.200% Senior Notes and 5.450% Senior Notes Offering—On March 7, 2024, the Company completed a registered public offering of $650.0 million aggregate principal amount of 5.200% senior unsecured notes due 2029 (the “5.200% Notes”) and $650.0 million aggregate principal amount of 5.450% senior unsecured notes due 2034 (the “5.450% Notes”). The net proceeds from this offering were approximately $1,281.3 million, after deducting commissions and estimated expenses. The Company used the net proceeds to repay existing indebtedness under the 2021 Multicurrency Credit Facility.

3.900% Senior Notes and 4.100% Senior Notes Offering—On May 29, 2024, the Company completed a registered public offering of 500.0 million EUR ($540.1 million at the date of issuance) aggregate principal amount of 3.900% senior unsecured notes due 2030 (the “3.900% Notes”) and 500.0 million EUR ($540.1 million at the date of issuance) aggregate principal amount of 4.100% senior unsecured notes due 2034 (the “4.100% Notes” and, together with the

5.200% Notes, the 5.450% Notes and the 3.900% Notes, the “Notes”). The net proceeds from this offering were approximately 988.4 million EUR (approximately $1,067.5 million at the date of issuance), after deducting commissions and estimated expenses. The Company used the net proceeds to repay existing EUR indebtedness under the 2021 Multicurrency Credit Facility.

The key terms of the Notes are as follows:

Senior Notes	Aggregate Principal Amount (in millions)		Issue Date and Interest Accrual Date	Maturity Date	Contractual Interest Rate	First Interest Payment	Interest Payments Due (1)	Par Call Date (2)
5.200% Notes	$	650.0	March 7, 2024	February 15, 2029	5.200%	August 15, 2024	February 15 and August 15	January 15, 2029
5.450% Notes	$	650.0	March 7, 2024	February 15, 2034	5.450%	August 15, 2024	February 15 and August 15	November 15, 2033
3.900% Notes (3)	$	540.1	May 29, 2024	May 16, 2030	3.900%	May 16, 2025	May 16	February 16, 2030
4.100% Notes (3)	$	540.1	May 29, 2024	May 16, 2034	4.100%	May 16, 2025	May 16	February 16, 2034

___________

(1)Accrued and unpaid interest on USD denominated notes is payable in USD semi-annually in arrears and will be computed from the issue date on the basis of a 360-day year comprised of twelve 30-day months. Interest on EUR-denominated notes is payable in EUR annually and will be computed on the basis of the actual number of days in the period for which interest is being calculated and the actual number of days from and including the last date on which interest was paid on the notes, beginning on the issue date.

(2)The Company may redeem the Notes at any time, in whole or in part, at a redemption price equal to 100% of the principal amount of the Notes plus a make-whole premium, together with accrued interest to the redemption date. If the Company redeems the Notes on or after the par call date, the Company will not be required to pay a make-whole premium.

(3)The 3.900% Notes and the 4.100% Notes are denominated in EUR; dollar amounts represent the equivalent issuance date aggregate principal amount.

If the Company undergoes a change of control and corresponding ratings decline, each as defined in the applicable supplemental indenture for the Notes, the Company may be required to repurchase all of the Notes at a purchase price equal to 101% of the aggregate principal amount of the Notes repurchased, plus accrued and unpaid interest (including additional interest, if any), up to but not including the repurchase date. The Notes rank equally in right of payment with all of the Company’s other senior unsecured debt obligations and are structurally subordinated to all existing and future indebtedness and other obligations of its subsidiaries.

The supplemental indentures contain certain covenants that restrict the Company’s ability to merge, consolidate or sell assets and its (together with its subsidiaries’) ability to incur liens. These covenants are subject to a number of exceptions, including that the Company and its subsidiaries may incur certain liens on assets, mortgages or other liens securing indebtedness if the aggregate amount of indebtedness secured by such liens does not exceed 3.5x Adjusted EBITDA, as defined in the applicable supplemental indenture.

Bank Facilities

2021 Multicurrency Credit Facility—During the six months ended June 30, 2024, the Company borrowed an aggregate of $3.6 billion, including 0.9 billion EUR ($1.0 billion as of the borrowing date) and repaid an aggregate of $3.1 billion, including 1.1 billion EUR ($1.2 billion as of the repayment date), of revolving indebtedness under the Company’s $6.0 billion senior unsecured multicurrency revolving credit facility, as amended and restated in December 2021, as further amended (the “2021 Multicurrency Credit Facility”). The Company used the borrowings to repay outstanding indebtedness, including the 0.600% Notes, the 5.00% Notes and the 2021 EUR Three Year Delayed Draw Term Loan (as defined below), and for general corporate purposes. As of June 30, 2024, there are no EUR borrowings outstanding under the 2021 Multicurrency Credit Facility.

2021 Credit Facility—During the six months ended June 30, 2024, the Company borrowed an aggregate of $1.5 billion and repaid an aggregate of $1.0 billion of revolving indebtedness under the Company’s $4.0 billion senior unsecured revolving credit facility, as amended and restated in December 2021, as further amended (the “2021 Credit Facility”). The Company used the borrowings to repay outstanding indebtedness, including the 3.375% Notes, and for general corporate purposes.

Repayment of 2021 EUR Three Year Delayed Draw Term Loan—On May 21, 2024, the Company repaid all amounts outstanding under its 825 million EUR ($895.5 million as of the repayment date) unsecured term loan, as amended in

December 2021 (the “2021 EUR Three Year Delayed Draw Term Loan”) using borrowings under the 2021 Multicurrency Credit Facility.

As of June 30, 2024, the key terms under the 2021 Multicurrency Credit Facility, the 2021 Credit Facility and the Company’s $1.0 billion unsecured term loan, as amended and restated in December 2021, as further amended (the “2021 Term Loan”) were as follows:

	Outstanding Principal Balance (in millions)		Undrawn letters of credit (in millions)		Maturity Date		Current margin over SOFR or EURIBOR (1)		Current commitment fee (2)
2021 Multicurrency Credit Facility	$	1,170.0	$	3.5	July 1, 2026	(3)	1.125	%	0.110	%
2021 Credit Facility	2,113.4		30.4		July 1, 2028	(3)	1.125	%	0.110	%
2021 Term Loan	1,000.0		N/A		January 31, 2027		1.125	%	N/A

_______________

(1)SOFR applies to the USD denominated borrowings under the 2021 Multicurrency Credit Facility, the 2021 Credit Facility and the 2021 Term Loan.

(2)Fee on undrawn portion of each credit facility.

(3)Subject to two optional renewal periods.

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FAIR VALUE MEASUREMENTS

6 Months Ended

Jun. 30, 2024

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS

The Company determines the fair value of its financial instruments based on the fair value hierarchy, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Below are the three levels of inputs that may be used to measure fair value:

Level 1	Quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date.
Level 2	Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
Level 3	Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

Items Measured at Fair Value on a Recurring Basis—The fair values of the Company’s financial assets and liabilities that are required to be measured on a recurring basis at fair value were as follows:

	June 30, 2024					December 31, 2023
	Fair Value Measurements Using					Fair Value Measurements Using
	Level 1		Level 2		Level 3	Level 1		Level 2		Level 3
Assets:
Investments in equity securities (1)	$	54.2	$	5.3	—	$	28.2	$	5.3	—
VIL OCDs	—		—		—	—		$	192.3	—

_______________

(1)Investments in equity securities are recorded in Notes receivable and other non-current assets in the consolidated balance sheet at fair value. Unrealized holding gains and losses for equity securities are recorded in Other income (expense) in the consolidated statements of operations in the current period. During the three and six months ended June 30, 2024 and 2023, the Company recognized unrealized gains (losses) of $40.7 million, $(1.8) million, $26.0 million and $(0.6) million, respectively, for equity securities held as of June 30, 2024.

VIL Optionally Convertible Debentures—In February 2023, and as amended in August 2023, one of the Company’s customers in India, Vodafone Idea Limited (“VIL”), issued optionally convertible debentures (the “VIL OCDs”) to the Company’s subsidiary, ATC TIPL, in exchange for VIL’s payment of certain amounts towards accounts receivables. The VIL OCDs were (a) to be repaid by VIL with interest or (b) convertible into equity of VIL. If converted and following registration, such equity shall be free to trade in the open market beginning on the one year anniversary of the date of issuance of the VIL OCDs. The VIL OCDs were issued for an aggregate face value of 16.0 billion INR (approximately $193.2 million on the date of issuance). The VIL OCDs were to mature in tranches with 8.0 billion INR (approximately $96.6 million on the date of issuance) maturing on August 27, 2023 and 8.0 billion INR (approximately $96.6 million on the date of issuance) maturing on August 27, 2024. In August 2023, the Company amended the agreements governing the VIL OCDs to, among other items, extend the maturity of the first tranche of the VIL OCDs to August 27, 2024. The fair value of the VIL OCDs at issuance was approximately $116.5 million. The VIL OCDs accrue interest at a rate of 11.2% annually. Interest is payable to ATC TIPL semi-annually, with the first payment received in September 2023.

On March 23, 2024, the Company converted an aggregate face value of 14.4 billion INR (approximately $172.7 million) of VIL OCDs into 1,440 million shares of equity of VIL (the “VIL Shares”).

On April 29, 2024, the Company completed the sale of 1,440 million VIL Shares at a price of 12.78 INR per share. The net proceeds for this transaction were approximately 18.0 billion INR (approximately $216.0 million at the date of settlement) after deducting commissions and fees.

On June 5, 2024, the Company completed the sale of the remaining aggregate face value of 1.6 billion INR (approximately $19.2 million) of the VIL OCDs. The net proceeds for this transaction, excluding accrued interest, were approximately 1.8 billion INR (approximately $22.0 million at the date of settlement) after deducting fees.

During the three months ended June 30, 2024, the Company recognized a gain of $46.4 million on the sales of the VIL Shares and the VIL OCDs. The gains on the sales of the VIL Shares and the VIL OCDs are recorded in Other income (expense) in the consolidated statements of operations in the current period. As of June 30, 2024, none of the VIL Shares or the VIL OCDs remained outstanding.

Items Measured at Fair Value on a Nonrecurring Basis

Assets Held and Used—The Company’s long-lived assets are recorded at amortized cost and, if impaired, are adjusted to fair value using Level 3 inputs. There were no material long-lived asset impairments during the three and six months ended June 30, 2024 or 2023 and there were no significant unobservable inputs used to determine the fair value of long-lived assets during the three and six months ended June 30, 2024 or 2023.

Fair Value of Financial Instruments—The Company’s financial instruments for which the carrying value reasonably approximates fair value at June 30, 2024 and December 31, 2023 include cash and cash equivalents, restricted cash, accounts receivable and accounts payable. The Company’s estimates of fair value of its long-term obligations, including the current portion, are based primarily upon reported market values. For long-term debt not actively traded, fair value is estimated using either indicative price quotes or a discounted cash flow analysis using rates for debt with similar terms and maturities. As of June 30, 2024 and December 31, 2023, the carrying value of long-term obligations, including the current portion, was $39.0 billion and $38.9 billion, respectively. As of June 30, 2024, the fair value of long-term obligations, including the current portion, was $36.4 billion, of which $29.7 billion was measured using Level 1 inputs and $6.7 billion was measured using Level 2 inputs. As of December 31, 2023, the fair value of long-term obligations, including the current portion, was $36.7 billion, of which $30.0 billion was measured using Level 1 inputs and $6.7 billion was measured using Level 2 inputs.

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INCOME TAXES

6 Months Ended

Jun. 30, 2024

Income Tax Disclosure [Abstract]

INCOME TAXES

INCOME TAXES

The Company provides for income taxes at the end of each interim period based on the estimated effective tax rate (“ETR”) for the full fiscal year. Cumulative adjustments to the Company’s estimate are recorded in the interim period in which a change in the estimated annual ETR is determined. Under the provisions of the Internal Revenue Code of 1986, as amended, the Company may deduct earnings distributed to stockholders against the income generated by its real estate investment trust (“REIT”) operations. The Company continues to be subject to income taxes on the income of its domestic taxable REIT subsidiaries and income taxes in foreign jurisdictions where it conducts operations.

The Company provides valuation allowances if, based on the available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized. Management assesses the available evidence to estimate if sufficient future taxable income will be generated to use the existing deferred tax assets. Valuation allowances may be reversed if, based on changes in facts and circumstances, the net deferred tax assets have been determined to be realizable.

The increases in the income tax provision during the three and six months ended June 30, 2024 were primarily attributable to increased earnings in certain foreign jurisdictions, partially due to the impacts of the change in estimated useful lives on depreciation and amortization expense as described in note 1. Additionally, the income tax provision for the three and six months ended June 30, 2023 included a benefit from the application of a tax law change in Kenya.

As of June 30, 2024 and December 31, 2023, the total unrecognized tax benefits that would impact the ETR, if recognized, were approximately $121.3 million and $130.7 million, respectively. The amount of unrecognized tax benefits during the three and six months ended June 30, 2024 includes (i) additions to the Company’s existing tax positions of $1.6 million and $2.6 million, respectively, (ii) reductions due to foreign currency exchange rate fluctuations of $7.6 million and $7.2 million, respectively, (iii) reductions to the Company’s prior year tax positions and settlements of $3.4 million and $3.4 million, respectively, and (iv) reductions due to the expiration of statutes of limitation of $1.4 million and $1.4 million, respectively. Unrecognized tax benefits are expected to change over the next 12 months if certain tax matters ultimately settle with the applicable taxing jurisdiction during this time frame, as described in note 12 to the Company’s consolidated financial statements included in the 2023 Form 10-K. The impact of the amount of these changes to previously recorded uncertain tax positions could range from zero to $10.2 million.

The Company recorded the following penalties and income tax-related interest expense during the three and six months ended June 30, 2024 and 2023:

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Penalties and income tax-related interest expense	$	6.2	$	3.2	$	11.7	$	6.0

As of June 30, 2024 and December 31, 2023, the total amount of accrued income tax related interest and penalties included in the consolidated balance sheets were $68.6 million and $62.8 million, respectively.

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STOCK-BASED COMPENSATION

6 Months Ended

Jun. 30, 2024

Share-Based Payment Arrangement [Abstract]

STOCK-BASED COMPENSATION

STOCK-BASED COMPENSATION

Summary of Stock-Based Compensation Plans—The Company maintains equity incentive plans that provide for the grant of stock-based awards to its directors, officers and employees. The Company’s 2007 Equity Incentive Plan, as amended (the “2007 Plan”), provides for the grant of non-qualified and incentive stock options, as well as restricted stock units, restricted stock and other stock-based awards. Exercise prices for non-qualified and incentive stock options are not less than the fair value of the underlying common stock on the date of grant. Equity awards typically vest ratably. Awards granted prior to March 10, 2023 generally vest over four years for time-based restricted stock units (“RSUs”) and stock options. In December 2022, the Company’s Compensation Committee changed the terms of its awards to generally vest over three years. The change in vesting terms is applicable for new awards granted beginning on March 10, 2023 and does not change the vesting terms applicable to grants awarded prior to March 10, 2023. Performance-based restricted stock units (“PSUs”) generally vest over three years. Stock options generally expire ten years from the date of grant. As of June 30, 2024, the Company had the ability to grant stock-based awards with respect to an aggregate of 3.3 million shares of common stock under the 2007 Plan. In addition, the Company maintains an employee stock purchase plan (the “ESPP”) pursuant to which eligible employees may purchase shares of the Company’s common stock on the last day of each bi-annual offering period at a 15% discount from the lower of the closing market value on the first or last day of such offering period. The offering periods run from June 1 through November 30 and from December 1 through May 31 of each year.

During the three and six months ended June 30, 2024 and 2023, the Company recorded the following stock-based compensation expense in selling, general, administrative and development expense:

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Stock-based compensation expense	$	46.3	$	49.4	$	111.2	$	114.9

Stock Options—As of June 30, 2024, there was no unrecognized compensation expense related to unvested stock options.

The Company’s option activity for the six months ended June 30, 2024 was as follows (shares disclosed in full amounts):

	Number of Options
Outstanding as of January 1, 2024	766,955
Exercised	(178,416)
Forfeited	—
Expired	—
Outstanding as of June 30, 2024	588,539

Restricted Stock Units—As of June 30, 2024, total unrecognized compensation expense related to unvested RSUs granted under the 2007 Plan was $217.4 million and is expected to be recognized over a weighted average period of approximately two years. Vesting of RSUs is subject generally to the employee’s continued employment or death, disability or qualified retirement (each as defined in the applicable RSU award agreement).

Performance-Based Restricted Stock Units—During the six months ended June 30, 2024, the Company’s Compensation Committee (the “Compensation Committee”) granted an aggregate of 87,550 PSUs (the “2024 PSUs”) to its executive officers and established the performance and market metrics for these awards. During the years ended December 31, 2023 and 2022, the Compensation Committee granted an aggregate of 118,684 PSUs (the “2023 PSUs”) and 98,542 PSUs (the “2022 PSUs”), respectively, to its executive officers and established the performance metrics for these awards. Threshold, target and maximum parameters were established for the metrics for a three-year performance period with respect to each of the 2024 PSUs, the 2023 PSUs and the 2022 PSUs and will be used to calculate the number of shares that will be issuable when each award vests, which may range from zero to 200% of the target amounts. At the end of each three-year performance period, the number of shares that vest will depend on the degree of achievement against the pre-established goals. PSUs will be paid out in common stock at the end of each performance period, subject generally to the executive’s continued employment or death, disability or qualified retirement (each as defined in the applicable PSU award agreement). PSUs will accrue dividend equivalents prior to vesting, which will be paid out only in respect of shares that actually vest.

The 2024 PSUs include a market condition component based on relative total shareholder return as measured against the REIT constituents included in the S&P 500 Index. For the component of the 2024 PSUs subject to a market condition, fair value is determined using a Monte Carlo simulation model, which uses multiple input variables to determine the probability of satisfying the market condition requirements. The grant date fair value of the market condition component of the 2024 PSUs is $216.11.

Key assumptions used to apply this pricing model were as follows:

	Six Months Ended June 30, 2024
Expected term (years)	2.81
Risk-free interest rate	4.31	%
Annualized volatility	26.75	%

Restricted Stock Units and Performance-Based Restricted Stock Units—The Company’s RSU and PSU activity for the six months ended June 30, 2024 was as follows (shares disclosed in full amounts): 

	RSUs	PSUs
Outstanding as of January 1, 2024 (1)	1,638,711	363,488
Granted (2)	692,621	87,550
Vested and Released (3)	(667,001)	(144,925)
Forfeited	(24,680)	(1,337)
Outstanding as of June 30, 2024	1,639,651	304,776
Vested and deferred as of June 30, 2024 (4)	29,316	—

_______________

(1)PSUs consist of the target number of shares issuable at the end of the three-year performance period for the outstanding 2023 PSUs and the outstanding 2022 PSUs, or 118,684 shares and 98,542 shares, respectively, the shares issuable at the end of the three-year performance period for the PSUs granted in 2021 (the “2021 PSUs”) based on achievement against the performance metrics for the three-year performance period, or 127,318 shares and the target remaining number of shares issuable at the end of the one-year performance period for PSUs granted to certain non-executive employees during the year ended December 31, 2023, net of forfeitures, or 18,944 shares (the “Retention PSUs”).

(2)PSUs consist of the target number of shares issuable at the end of the three-year performance period for the 2024 PSUs, or 87,550 shares.

(3)PSUs consist of shares vested pursuant to the 2021 PSUs and the Retention PSUs. There are no additional shares to be earned related to the 2021 PSUs or the Retention PSUs.

(4)Vested and deferred RSUs are related to deferred compensation for certain former employees.

During the three and six months ended June 30, 2024, the Company recorded $7.2 million and $16.3 million, respectively, in stock-based compensation expense for equity awards in which the performance goals have been established and were probable of being achieved. The remaining unrecognized compensation expense related to these awards at June 30, 2024 was $15.4 million based on the Company’s current assessment of the probability of achieving the performance goals. The weighted average period over which the cost will be recognized is approximately two years.

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EQUITY

6 Months Ended

Jun. 30, 2024

Equity [Abstract]

EQUITY

EQUITY

Sales of Equity Securities—The Company receives proceeds from sales of its equity securities pursuant to the ESPP and upon exercise of stock options granted under the 2007 Plan. During the six months ended June 30, 2024, the Company received an aggregate of $23.7 million in proceeds upon exercises of stock options and sales pursuant to the ESPP.

Stock Repurchase Programs—In March 2011, the Company’s Board of Directors approved a stock repurchase program, pursuant to which the Company is authorized to repurchase up to $1.5 billion of its common stock (the “2011 Buyback”). In December 2017, the Board of Directors approved an additional stock repurchase program, pursuant to which the Company is authorized to repurchase up to $2.0 billion of its common stock (the “2017 Buyback,” and, together with the 2011 Buyback, the “Buyback Programs”).

Under the Buyback Programs, the Company is authorized to purchase shares from time to time through open market purchases, in privately negotiated transactions not to exceed market prices, and (with respect to such open market purchases) pursuant to plans adopted in accordance with Rule 10b5-1 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), in accordance with securities laws and other legal requirements and subject to market conditions and other factors.

During the six months ended June 30, 2024, there were no repurchases under either of the Buyback Programs. As of June 30, 2024, the Company has repurchased a total of 14,451,325 shares of its common stock under the 2011 Buyback for an aggregate of $1.5 billion, including commissions and fees. As of June 30, 2024, the Company has not made any repurchases under the 2017 Buyback.

The Company expects to fund any further repurchases of its common stock through a combination of cash on hand, cash generated by operations and borrowings under its credit facilities. Repurchases under the Buyback Programs are subject to, among other things, the Company having available cash to fund the repurchases.

Distributions—During the six months ended June 30, 2024, the Company declared or paid the following cash distributions (per share data reflects actual amounts):

Declaration Date	Payment Date	Record Date	Distribution per share		Aggregate Payment Amount (1)
Common Stock
May 23, 2024	July 12, 2024	June 14, 2024	$	1.62	$	756.7
March 14, 2024	April 26, 2024	April 12, 2024	$	1.62	$	756.5
December 13, 2023	February 1, 2024	December 28, 2023	$	1.70	$	792.7

_______________

(1)Does not include amounts accrued for distributions payable related to unvested restricted stock units.

During the six months ended June 30, 2023, the Company declared or paid the following cash distributions (per share data reflects actual amounts):

Declaration Date	Payment Date	Record Date	Distribution per share		Aggregate Payment Amount (1)
Common Stock
May 24, 2023	July 10, 2023	June 16, 2023	$	1.57	$	731.8
March 8, 2023	April 28, 2023	April 14, 2023	$	1.56	$	727.0
December 7, 2022	February 2, 2023	December 28, 2022	$	1.56	$	726.3

_______________

(1)Does not include amounts accrued for distributions payable related to unvested restricted stock units.

The Company accrues distributions on unvested restricted stock units, which are payable upon vesting. As of June 30, 2024, the amount accrued for distributions payable related to unvested restricted stock units was $18.0 million. During the six months ended June 30, 2024 and 2023, the Company paid $10.0 million and $7.3 million of distributions upon the vesting of restricted stock units, respectively. To maintain its qualification for taxation as a REIT, the Company expects to continue paying distributions, the amount, timing and frequency of which will be determined, and subject to adjustment, by the Company’s Board of Directors.

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NONCONTROLLING INTERESTS

6 Months Ended

Jun. 30, 2024

Noncontrolling Interest [Abstract]

NONCONTROLLING INTERESTS

NONCONTROLLING INTERESTS

European Interests—As of June 30, 2024, ATC Europe consists of the Company’s operations in France, Germany and Spain. The Company currently holds a 52% controlling interest in ATC Europe, with Caisse de dépôt et placement du Québec (“CDPQ”) and Allianz insurance companies and funds managed by Allianz Capital Partners GmbH, including the Allianz European Infrastructure Fund (collectively, “Allianz”) holding 30% and 18% noncontrolling interests, respectively. ATC Europe holds a 100% interest in the subsidiaries that consist of the Company’s operations in France and an 87% and an 83% controlling interest in the subsidiaries that consist of the Company’s operations in Germany and Spain, respectively, with PGGM holding a 13% and a 17% noncontrolling interest in each respective subsidiary.

Bangladesh Partnership—In 2021, the Company acquired a 51% controlling interest in Kirtonkhola Tower Bangladesh Limited (“KTBL”) for 900 million Bangladeshi Taka (approximately $10.6 million at the date of closing). Confidence Group holds a 49% noncontrolling interest in KTBL.

Stonepeak Transaction—In 2022, the Company entered into agreements pursuant to which certain investment vehicles affiliated with Stonepeak Partners LP (such investment vehicles, collectively, “Stonepeak”) acquired a noncontrolling ownership interest in the Company’s U.S. data center business for total aggregate consideration of $3.1 billion, through an investment in common equity and mandatorily convertible preferred equity (the “Stonepeak Transaction”).

As of June 30, 2024, the Company holds a common equity interest of approximately 72% in its U.S. data center business, with Stonepeak holding approximately 28% of the outstanding common equity and 100% of the outstanding mandatorily convertible preferred equity. On a fully converted basis, which is expected to occur four years from August 2022, and on the basis of the currently outstanding equity, the Company will hold a controlling ownership interest of approximately 64%, with Stonepeak holding approximately 36%. The mandatorily convertible preferred equity, which accrues dividends at 5.0%, will convert into common equity on a one for one basis, subject to adjustment that will be measured upon conversion.

Dividends to noncontrolling interests—Certain of the Company’s subsidiaries may, from time to time, declare dividends. During the six months ended June 30, 2024, the Company’s U.S. data center business declared distributions of $23.0 million related to the outstanding Stonepeak mandatorily convertible preferred equity (the “Stonepeak Preferred Distributions”). As of June 30, 2024, the amount accrued for Stonepeak Preferred Distributions was $11.5 million.

Beginning in January 2024, pursuant to the terms of the ownership agreement with Stonepeak, on a quarterly basis, the Company’s U.S. data center business will distribute common dividends to the Company and to Stonepeak in proportion to their respective equity interests in the Company’s U.S. data center business (the “Stonepeak Common Dividend”). During the six months ended June 30, 2024, the Company’s U.S. data center business made distributions of $91.7 million related to the Stonepeak Common Dividend for the period from the initial closing of the Stonepeak Transaction in August 2022 through December 31, 2023, which was accrued for as of December 31, 2023. The $91.7 million distribution during the six months ended June 30, 2024 included a noncash distribution of $37.5 million made in lieu of a common equity contribution from Stonepeak. Additionally, during the three months ended June 30, 2024, the Company’s U.S. data center business declared and paid distributions of $13.0 million related to the Stonepeak Common Dividend.

During the six months ended June 30, 2024, pursuant to the terms of the ownership agreements, ATC Europe C.V., one of the Company’s subsidiaries in the Netherlands, declared and paid a dividend of 170.0 million EUR (approximately $183.2 million at the date of payment), pursuant to the terms of the ownership agreements, to the Company, CDPQ and Allianz in proportion to their respective equity interests in ATC Europe C.V.

During the six months ended June 30, 2024, pursuant to the terms of the ownership agreements, AT Rhine C.V., one of the Company’s subsidiaries in Germany, declared and paid a dividend of 45.0 million EUR (approximately $48.6 million at the date of payment), pursuant to the terms of the ownership agreements, to ATC Europe and PGGM in proportion to their respective equity interests in AT Rhine C.V.

During the six months ended June 30, 2024, pursuant to the terms of the ownership agreements, AT Iberia C.V., one of the Company’s subsidiaries in Spain, declared and paid a dividend of 22.4 million EUR (approximately $24.0 million at the date of payment), pursuant to the terms of the ownership agreements, to ATC Europe and PGGM in proportion to their respective equity interests in AT Iberia C.V.

During the six months ended June 30, 2024, pursuant to the terms of the ownership agreements, AT Iberia C.V. also declared and paid a dividend of 70.0 million EUR (approximately $74.9 million at the date of payment), pursuant to the terms of the ownership agreements, to ATC Europe and PGGM in proportion to their respective equity interests in AT Iberia C.V. The distribution included a noncash distribution to PGGM of $12.4 million made in lieu of a contribution from PGGM.

The changes in noncontrolling interests were as follows:

	Six Months Ended June 30,
	2024		2023
Balance as of January 1,	$	6,667.2	$	6,836.1
Net income (loss) attributable to noncontrolling interests	12.4		(35.0)
Foreign currency translation adjustment attributable to noncontrolling interests, net of tax	(119.7)		60.8
Contributions from noncontrolling interest holders (1)	152.4		10.5
Distributions to noncontrolling interest holders	(144.8)		(31.6)
Balance as of June 30,	$	6,567.5	$	6,840.8

_______________

(1)Six months ended June 30, 2024, includes contributions from Stonepeak of $137.3 million, including a noncash contribution of $37.5 million made in lieu of Stonepeak’s receipt of the Stonepeak Common Dividend and a noncash contribution from PGGM of $12.4 million made in lieu of PGGM’s receipt of a distribution.

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EARNINGS PER COMMON SHARE

6 Months Ended

Jun. 30, 2024

Earnings Per Share [Abstract]

EARNINGS PER COMMON SHARE

EARNINGS PER COMMON SHARE

The following table sets forth basic and diluted net income per common share computational data (shares in thousands, except per share data):

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Net income attributable to American Tower Corporation common stockholders	$	900.3	$	475.7	$	1,817.7	$	811.5
Basic weighted average common shares outstanding	467,038		466,087		466,778		465,915
Dilutive securities	743		892		1,015		1,024
Diluted weighted average common shares outstanding	467,781		466,979		467,793		466,939
Basic net income attributable to American Tower Corporation common stockholders per common share	$	1.93	$	1.02	$	3.89	$	1.74
Diluted net income attributable to American Tower Corporation common stockholders per common share	$	1.92	$	1.02	$	3.89	$	1.74

Shares Excluded From Dilutive Effect—The following shares were not included in the computation of diluted earnings per share because the effect would be anti-dilutive (in thousands, on a weighted average basis):

	Three Months Ended June 30,		Six Months Ended June 30,
	2024	2023	2024	2023
Restricted stock units	646	374	287	5

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COMMITMENTS AND CONTINGENCIES

6 Months Ended

Jun. 30, 2024

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES

Litigation—The Company periodically becomes involved in various claims, lawsuits and proceedings that are incidental to its business. In the opinion of Company management, after consultation with counsel, there are no matters currently pending that would, in the event of an adverse outcome, materially impact the Company’s consolidated financial position, results of operations or liquidity.

Verizon Transaction—In March 2015, the Company entered into an agreement with various operating entities of Verizon Communications Inc. (“Verizon”) that currently provides for the lease, sublease or management of approximately 11,200 wireless communications sites, which commenced on March 27, 2015. The average term of the lease or sublease for all communications sites at the inception of the agreement was approximately 28 years, assuming renewals or extensions of the underlying ground leases for the sites. The Company has the option to purchase the leased sites in tranches, subject to the applicable lease, sublease or management rights upon its scheduled expiration. Each tower is assigned to an annual tranche, ranging from 2034 to 2047, which represents the outside expiration date for the sublease rights to the towers in that tranche. The purchase price for each tranche is a fixed amount stated in the lease for such tranche plus the fair market value of certain alterations made to the related towers. The aggregate purchase option price for the towers leased and subleased is approximately $5.0 billion. Verizon will occupy the sites as a tenant for an initial term of ten years with eight optional successive five-year terms; each such term shall be governed by standard master lease agreement terms established as a part of the transaction.

AT&T Transaction—The Company has an agreement with SBC Communications Inc., a predecessor entity to AT&T Inc. (“AT&T”), that currently provides for the lease or sublease of approximately 1,800 towers, which commenced between December 2000 and August 2004. Substantially all of the towers are part of the Trust Securitizations. The average term of the lease or sublease for all sites at the inception of the agreement was approximately 27 years, assuming renewals or extensions of the underlying ground leases for the sites. The Company has the option to purchase the sites subject to the applicable lease or sublease upon its expiration. Each tower is assigned to an annual tranche, ranging from 2013 to 2032, which represents the outside expiration date for the sublease rights to that tower. The purchase price for each site is a fixed amount stated in the lease for that site plus the fair market value of certain alterations made to the related tower by AT&T. As of June 30, 2024, the Company has purchased an aggregate of approximately 600 of the subleased towers which are subject to the applicable agreement. The aggregate purchase option price for the remaining towers leased and subleased is $1.1 billion and includes per annum accretion through the applicable expiration of the lease or sublease of a site. For all such sites, AT&T has the right to continue to lease the reserved space through June 30, 2025 at the then-current monthly fee, which shall escalate in accordance with the standard master lease agreement for the

remainder of AT&T’s tenancy. Thereafter, AT&T shall have the right to renew such lease for up to five successive five-year terms.

Other Contingencies—The Company is subject to income tax and other taxes in the geographic areas where it holds assets or operates, and periodically receives notifications of audits, assessments or other actions by taxing authorities. Taxing authorities may issue notices or assessments while audits are being conducted. In certain jurisdictions, taxing authorities may issue assessments with minimal examination. These notices and assessments do not represent amounts that the Company is obligated to pay and are often not reflective of the actual tax liability for which the Company will ultimately be liable. In the process of responding to assessments of taxes that the Company believes are not enforceable, the Company avails itself of both administrative and judicial remedies. The Company evaluates the circumstances of each notification or assessment based on the information available and, in those instances in which the Company does not anticipate a successful defense of positions taken in its tax filings, a liability is recorded in the appropriate amount based on the underlying assessment.

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BUSINESS SEGMENTS

6 Months Ended

Jun. 30, 2024

Segment Reporting [Abstract]

BUSINESS SEGMENTS

BUSINESS SEGMENTS

Property

Communications Sites and Related Communications Infrastructure—The Company’s primary business is leasing space on multitenant communications sites to wireless service providers, radio and television broadcast companies, wireless data providers, government agencies and municipalities and tenants in a number of other industries. The Company has historically reported these operations on a geographic basis.

Data Centers—The Company’s Data Centers segment relates to data center facilities and related assets that the Company owns and operates in the United States. The Data Centers segment offers different types of leased land and related services from, and requires different resources, skill sets and marketing strategies than the existing property operating segment in the U.S. & Canada.

As of June 30, 2024, the Company’s property operations consisted of the following:

•U.S. & Canada: property operations in Canada and the United States;

•Asia-Pacific: property operations in Australia, Bangladesh, India, New Zealand and the Philippines;

•Africa: property operations in Burkina Faso, Ghana, Kenya, Niger, Nigeria, South Africa and Uganda;

•Europe: property operations in France, Germany and Spain;

•Latin America: property operations in Argentina, Brazil, Chile, Colombia, Costa Rica, Mexico, Paraguay and Peru; and

•Data Centers: data center property operations in the United States.

Services

The Company’s Services segment offers tower-related services in the United States, including AZP, structural and mount analyses, and construction management, which primarily support its site leasing business, including the addition of new tenants and equipment on its communications sites. The Services segment is a strategic business unit that offers different services from, and requires different resources, skill sets and marketing strategies than, the property operating segments.

The accounting policies applied in compiling segment information below are similar to those described in note 1 to the Company’s consolidated financial statements included in the 2023 Form 10-K and as updated in note 1 above. Among other factors, in evaluating financial performance in each business segment, management uses segment gross margin and segment operating profit. The Company defines segment gross margin as segment revenue less segment operating expenses excluding Depreciation, amortization and accretion; Selling, general, administrative and development expense; and Other operating expenses. The Company defines segment operating profit as segment gross margin less Selling, general, administrative and development expense attributable to the segment, excluding stock-based compensation expense and corporate expenses. These measures of segment gross margin and segment operating profit are also before Interest income, Interest expense, Gain (loss) on retirement of long-term obligations, Other income (expense), Net income (loss) attributable to noncontrolling interests and Income tax benefit (provision). The categories of expenses indicated above, such as depreciation, have been excluded from segment operating performance as they are not considered in the review of information or the evaluation of results by management. There are no significant revenues resulting from transactions between the Company’s operating segments. All intercompany transactions are eliminated to reconcile segment results and assets to the consolidated statements of operations and consolidated balance sheets.

Summarized financial information concerning the Company’s reportable segments for the three and six months ended June 30, 2024 and 2023 is shown in the following tables. The “Other” column (i) represents amounts excluded from specific segments, such as business development operations, stock-based compensation expense and corporate expenses included in Selling, general, administrative and development expense; Other operating expenses; Interest income; Interest expense; Gain (loss) on retirement of long-term obligations; and Other income (expense), and (ii) reconciles segment operating profit to Income from continuing operations before income taxes.

	Property												Total  Property		Services		Other		Total
Three Months Ended June 30, 2024	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers
Segment revenues	$	1,315.4	$	360.9	$	293.9	$	203.2	$	448.7	$	230.8	$	2,852.9	$	47.4			$	2,900.3
Segment operating expenses	220.6		174.0		96.4		73.2		136.4		99.3		799.9		22.0				821.9
Segment gross margin	1,094.8		186.9		197.5		130.0		312.3		131.5		2,053.0		25.4				2,078.4
Segment selling, general, administrative and development expense (1)	40.2		16.2		15.4		15.4		21.7		18.9		127.8		4.6				132.4
Segment operating profit	$	1,054.6	$	170.7	$	182.1	$	114.6	$	290.6	$	112.6	$	1,925.2	$	20.8			$	1,946.0
Stock-based compensation expense																	$	46.3	46.3
Other selling, general, administrative and development expense																	55.6		55.6
Depreciation, amortization and accretion																	561.7		561.7
Other expense (2)																	254.0		254.0
Income from continuing operations before income taxes																			$	1,028.4
Total assets	$	26,867.3	$	3,702.0	$	4,019.8	$	11,568.2	$	8,481.1	$	10,479.4	$	65,117.8	$	73.8	$	646.2	$	65,837.8

_______________

(1)Segment selling, general, administrative and development expenses exclude stock-based compensation expense of $46.3 million.

(2)Primarily includes interest expense and losses from foreign currency exchange rate fluctuations, partially offset by a gain of $46.4 million on the sales of the VIL Shares and the VIL OCDs and an unrealized gain from equity securities of $40.7 million.

	Property												Total  Property		Services		Other		Total
Three Months Ended June 30, 2023	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers
Segment revenues	$	1,303.2	$	261.7	$	321.2	$	198.2	$	439.4	$	204.9	$	2,728.6	$	43.1			$	2,771.7
Segment operating expenses	216.9		179.6		112.8		77.3		139.8		83.7		810.1		17.2				827.3
Segment gross margin	1,086.3		82.1		208.4		120.9		299.6		121.2		1,918.5		25.9				1,944.4
Segment selling, general, administrative and development expense (1)	41.7		17.4		18.7		15.1		23.5		18.6		135.0		5.3				140.3
Segment operating profit	$	1,044.6	$	64.7	$	189.7	$	105.8	$	276.1	$	102.6	$	1,783.5	$	20.6			$	1,804.1
Stock-based compensation expense																	$	49.4	49.4
Other selling, general, administrative and development expense																	54.7		54.7
Depreciation, amortization and accretion																	764.6		764.6
Other expense (2)																	460.7		460.7
Income from continuing operations before income taxes																			$	474.7
Total assets	$	26,595.2	$	3,941.7	$	4,180.6	$	11,659.8	$	9,229.1	$	10,549.7	$	66,156.1	$	102.9	$	620.0	$	66,879.0

_______________

(1)Segment selling, general, administrative and development expenses exclude stock-based compensation expense of $49.4 million.

(2)Primarily includes interest expense and losses from foreign currency exchange rate fluctuations. Three months ended June 30, 2023 also includes $37.5 million in impairment charges.

	Property												Total  Property		Services		Other		Total
Six Months Ended June 30, 2024	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers
Segment revenues	$	2,626.1	$	687.5	$	585.9	$	407.7	$	894.2	$	455.4	$	5,656.8	$	77.6			$	5,734.4
Segment operating expenses	424.9		344.7		189.1		146.7		276.7		192.2		1,574.3		35.9				1,610.2
Segment gross margin	2,201.2		342.8		396.8		261.0		617.5		263.2		4,082.5		41.7				4,124.2
Segment selling, general, administrative and development expense (1)	76.8		29.0		30.3		31.2		49.5		36.1		252.9		9.5				262.4
Segment operating profit	$	2,124.4	$	313.8	$	366.5	$	229.8	$	568.0	$	227.1	$	3,829.6	$	32.2			$	3,861.8
Stock-based compensation expense																	$	111.2	111.2
Other selling, general, administrative and development expense																	117.7		117.7
Depreciation, amortization and accretion																	1,111.1		1,111.1
Other expense (2)																	462.5		462.5
Income from continuing operations before income taxes																			$	2,059.3

_______________

(1)Segment selling, general, administrative and development expenses exclude stock-based compensation expense of $111.2 million.

(2)Primarily includes interest expense, partially offset by gains from foreign currency exchange rate fluctuations, a gain of $46.4 million on the sales of the VIL Shares and the VIL OCDs and an unrealized gain from equity securities of $26.0 million.

	Property												Total  Property		Services		Other		Total
Six Months Ended June 30, 2023	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers
Segment revenues	$	2,590.8	$	512.8	$	638.2	$	389.9	$	903.5	$	407.9	$	5,443.1	$	95.8			$	5,538.9
Segment operating expenses	422.2		348.0		231.3		150.4		277.7		167.5		1,597.1		36.3				1,633.4
Segment gross margin	2,168.6		164.8		406.9		239.5		625.8		240.4		3,846.0		59.5				3,905.5
Segment selling, general, administrative and development expense (1)	82.5		26.2		40.1		29.7		53.2		36.1		267.8		11.0				278.8
Segment operating profit	$	2,086.1	$	138.6	$	366.8	$	209.8	$	572.6	$	204.3	$	3,578.2	$	48.5			$	3,626.7
Stock-based compensation expense																	$	114.9	114.9
Other selling, general, administrative and development expense																	114.6		114.6
Depreciation, amortization and accretion																	1,558.7		1,558.7
Other expense (2)																	995.4		995.4
Income from continuing operations before income taxes																			$	843.1

_______________

(1)Segment selling, general, administrative and development expenses exclude stock-based compensation expense of $114.9 million.

(2)Primarily includes interest expense and losses from foreign currency exchange rate fluctuations. Six months ended June 30, 2023 also includes a net loss on the sales of one of the Company’s subsidiaries in Mexico that held fiber assets and the Company’s subsidiary in Poland of $78.9 million and $67.3 million in impairment charges.

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Insider Trading Arrangements

3 Months Ended

6 Months Ended

Jun. 30, 2024

shares

Jun. 30, 2024

shares

Trading Arrangements, by Individual

Non-Rule 10b5-1 Arrangement Adopted

false

Rule 10b5-1 Arrangement Terminated

false

Non-Rule 10b5-1 Arrangement Terminated

false

Olivier Puech [Member]

Trading Arrangements, by Individual

Material Terms of Trading Arrangement

Olivier Puech, our Executive Vice President and President, Latin America and EMEA, entered into a pre-arranged stock trading plan on May 3, 2024. Mr. Puech’s plan provides for the sale of up to 38,982 shares of our common stock between August 2, 2024 and December 31, 2024.

Name

Olivier Puech

Title

Executive Vice President and President, Latin America and EMEA

Rule 10b5-1 Arrangement Adopted

true

Adoption Date

May 3, 2024

Expiration Date

December 31, 2024

Arrangement Duration

151 days

Aggregate Available

38,982

38,982

Eugene M. Noel [Member]

Trading Arrangements, by Individual

Material Terms of Trading Arrangement

Eugene M. Noel, our Executive Vice President and President, U.S. Tower Division, entered into a pre-arranged stock trading plan on May 9, 2024. Mr. Noel’s plan provides for the potential exercise of vested stock options and the associated sale of up to 33,135 shares of our common stock between August 12, 2024 and March 10, 2025.

Name

Eugene M. Noel

Title

Executive Vice President and President, U.S. Tower Division

Rule 10b5-1 Arrangement Adopted

true

Adoption Date

May 9, 2024

Expiration Date

March 10, 2025

Arrangement Duration

210 days

Aggregate Available

33,135

33,135

Rodney M. Smith [Member]

Trading Arrangements, by Individual

Material Terms of Trading Arrangement

Rodney M. Smith, our Executive Vice President, Chief Financial Officer and Treasurer, entered into a pre-arranged stock trading plan on May 13, 2024. Mr. Smith’s plan provides for the potential exercise of vested stock options and the associated sale of up to 33,135 shares of our common stock between November 14, 2024 and February 21, 2025.

Name

Rodney M. Smith

Title

Executive Vice President, Chief Financial Officer and Treasurer

Rule 10b5-1 Arrangement Adopted

true

Adoption Date

May 13, 2024

Expiration Date

February 21, 2025

Arrangement Duration

99 days

Aggregate Available

33,135

33,135

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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies)

6 Months Ended

Jun. 30, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Principles of Consolidation and Basis of Presentation

Principles of Consolidation and Basis of Presentation—The accompanying consolidated and condensed consolidated financial statements include the accounts of the Company and those entities in which it has a controlling interest. Investments in entities that the Company does not control are accounted for using the equity method or as investments in equity securities, depending upon the Company’s ability to exercise significant influence over operating and financial policies. All intercompany accounts and transactions have been eliminated.

Reportable Segments

Reportable Segments—The Company reports its results in seven segments – U.S. & Canada property, Asia-Pacific property, Africa property, Europe property, Latin America property, Data Centers and Services, which are discussed further in note 14.

Property and Equipment

Property and Equipment—The Company finalized its review of the estimated useful lives of its tower assets during the six months ended June 30, 2024. The Company now has over 20 years of operating history, and determined that it should modify its current estimates for asset lives based on its historical operating experience. The Company retained an independent consultant to assist the Company in completing this review and analysis. The Company previously depreciated its towers on a straight-line basis over the shorter of the term of the underlying ground lease (including

renewal options) taking into account residual value or the estimated useful life of the tower, which the Company had historically estimated to be 20 years. The Company determined that the estimated useful life of its tower assets is 30 years, before taking into account residual value. Additionally, certain of the Company’s intangible assets are amortized on a similar basis to its tower assets, as the estimated useful lives of such intangible assets correlate to the useful life of the towers. The Company accounted for the changes in the useful lives as a change in accounting estimate under ASC 250 Accounting Changes and Error Corrections, which were recorded prospectively beginning on January 1, 2024. On January 1, 2024, the Company began depreciating its towers and related intangible assets on a straight-line basis over the remaining estimated useful life of the tower, taking into account the extended useful life and residual value. The extension of the asset lives (i) resulted in an approximately $515 million increase in the right of use asset, as additional renewal options may be included, with an offsetting adjustment made to increase the related operating lease liability and (ii) is expected to result in an estimated $730 million decrease in depreciation and amortization expense for the year ended December 31, 2024.

Asset Retirement Obligations

Asset Retirement Obligations—The Company finalized its review of the estimated settlement dates for its asset retirement obligations during the six months ended June 30, 2024. The Company now has over 20 years of operating history, and determined that it should modify its current estimated settlement dates based on its historical operating experience, management’s intent with respect to the assets, and the assets’ estimated useful lives. Based on its review and analysis, the Company concluded that a revision in the estimated settlement dates for its asset retirement obligations was appropriate. The Company accounted for the change in estimated settlement dates as a change in accounting estimate under ASC 250 Accounting Changes and Error Corrections, which was recorded prospectively beginning on January 1, 2024. The extension in the estimated settlement dates (i) resulted in a $470 million increase in the asset retirement obligation liability, with an offsetting adjustment made to the related long-lived tangible asset and an $875 million increase in the estimated undiscounted future cash outlay for asset retirement obligations, and (ii) is expected to result in an estimated $75 million decrease in accretion expense for the year ended December 31, 2024.

Revenue

Revenue—The Company’s revenue is derived from leasing the right to use its communications sites, the land on which the sites are located, the land underlying its customers’ sites and the space in its data center facilities (the “lease component”) and from the reimbursement of costs incurred by the Company in operating the communications sites and data center facilities and supporting its customers’ equipment as well as other services and contractual rights (the “non-lease component”). Most of the Company’s revenue is derived from leasing arrangements and is accounted for as lease revenue unless the timing and pattern of revenue recognition of the non-lease component differs from the lease component. If the timing and pattern of the non-lease component revenue recognition differs from that of the lease component, the Company separately determines the stand-alone selling prices and pattern of revenue recognition for each performance obligation. Revenue related to distributed antenna system (“DAS”) networks and fiber and other related assets results from agreements with customers that are generally not accounted for as leases.

Non-lease property revenue—Non-lease property revenue consists primarily of revenue generated from DAS networks, fiber and other property related revenue. DAS networks and fiber arrangements generally require that the Company provide the tenant the right to use available capacity on the applicable communications infrastructure. Performance obligations are satisfied over time for the duration of the arrangements. Non-lease property revenue also includes revenue generated from interconnection offerings in the Company’s data center facilities. Interconnection offerings are generally contracted on a month-to-month basis and are cancellable by the Company or the data center customer at any time. Performance obligations are satisfied over time for the duration of the arrangements. Other property related revenue streams, which include site inspections, are not material on either an individual or consolidated basis. There were no material changes in the receivables, contract assets and contract liabilities from contracts with customers for the three and six months ended June 30, 2024.

Services revenue—The Company offers tower-related services in the United States. These services include site application, zoning and permitting (“AZP”), structural and mount analyses, and construction management. There is a single performance obligation related to AZP and construction management, and revenue is recognized over time based on milestones achieved, which are determined based on costs expected to be incurred. Structural and mount analyses services may have more than one performance obligation, contingent upon the number of contracted services. Revenue is recognized at the point in time the services are completed.

Accounting Standards Updates

Accounting Standards Updates—In November 2023, the Financial Accounting Standards Board (“FASB”) issued guidance, which is intended to improve reportable segment disclosure requirements, primarily through additional disclosures about significant segment expenses. The standard is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. The amendments should be applied retrospectively to all prior periods presented in the financial statements. The Company is currently evaluating the impact of this guidance on its consolidated financial statements and related disclosures.

In December 2023, the FASB issued guidance which requires public entities to provide enhanced income tax disclosures on an annual basis. The new guidance requires an expanded rate reconciliation and the disaggregation of cash taxes paid by U.S. federal, U.S. state and foreign jurisdictions. The updated guidance is effective for fiscal years beginning after December 15, 2024, with early adoption permitted. The Company is currently evaluating the impact of this guidance on its consolidated financial statements and related disclosures.

SEC Rule Changes— In March 2024, the SEC issued Final Rule No. 33-11275, “The Enhancement and Standardization of Climate-Related Disclosures for Investors.” If such rule remains in effect, the rule will require registrants to provide certain climate-related information in their registration statements and annual reports. The rule requires registrants to provide climate related disclosures, including, but not limited to, (i) material Scope 1 and Scope 2 greenhouse gas emissions, (ii) governance and oversight of material climate-related risks, (iii) the material impact of climate risks on the registrant’s strategy, business model and outlook, (iv) risk management processes for material climate-related risks and (v) material climate targets and goals. The rule also requires disclosure of (x) financial statement effects of severe weather events and other natural conditions, (y) carbon offset and renewable energy credit information and (z) the impact of severe weather events and other natural conditions on estimates and assumptions. Disclosure requirements will begin phasing in for fiscal years beginning on or after January 1, 2025. In April 2024, the SEC issued an order staying implementation of such rule pending the resolution of certain challenges. The outcome of ongoing litigation is currently unknown. The Company is currently evaluating the potential impact of such rule on its consolidated financial statements and disclosures.

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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Tables)

6 Months Ended

Jun. 30, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Cash and Cash Equivalents

The reconciliation of cash and cash equivalents and restricted cash reported within the applicable balance sheet that sum to the total of the same such amounts shown in the statements of cash flows is as follows:

	Six Months Ended June 30,
	2024		2023
Cash and cash equivalents	$	2,492.1	$	2,015.7
Restricted cash	126.5		133.7
Total cash, cash equivalents and restricted cash	$	2,618.6	$	2,149.4

Schedule of Restrictions on Cash and Cash Equivalents

The reconciliation of cash and cash equivalents and restricted cash reported within the applicable balance sheet that sum to the total of the same such amounts shown in the statements of cash flows is as follows:

	Six Months Ended June 30,
	2024		2023
Cash and cash equivalents	$	2,492.1	$	2,015.7
Restricted cash	126.5		133.7
Total cash, cash equivalents and restricted cash	$	2,618.6	$	2,149.4

Schedule of Revenue Disaggregated by Source and Geography

A summary of revenue disaggregated by source and geography is as follows:

Three Months Ended June 30, 2024	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers		Total
Non-lease property revenue	$	77.2	$	2.2	$	6.2	$	5.2	$	27.6	$	32.8	$	151.2
Services revenue	47.4		—		—		—		—		—		47.4
Total non-lease revenue	$	124.6	$	2.2	$	6.2	$	5.2	$	27.6	$	32.8	$	198.6
Property lease revenue	1,238.2		358.7		287.7		198.0		421.1		198.0		2,701.7
Total revenue	$	1,362.8	$	360.9	$	293.9	$	203.2	$	448.7	$	230.8	$	2,900.3

Three Months Ended June 30, 2023	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers		Total
Non-lease property revenue	$	83.9	$	2.4	$	5.9	$	4.1	$	28.5	$	28.3	$	153.1
Services revenue	43.1		—		—		—		—		—		43.1
Total non-lease revenue	$	127.0	$	2.4	$	5.9	$	4.1	$	28.5	$	28.3	$	196.2
Property lease revenue	1,219.3		259.3		315.3		194.1		410.9		176.6		2,575.5
Total revenue	$	1,346.3	$	261.7	$	321.2	$	198.2	$	439.4	$	204.9	$	2,771.7

Six Months Ended June 30, 2024	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers		Total
Non-lease property revenue	$	150.1	$	4.4	$	12.3	$	8.7	$	56.3	$	64.4	$	296.2
Services revenue	77.6		—		—		—		—		—		77.6
Total non-lease revenue	$	227.7	$	4.4	$	12.3	$	8.7	$	56.3	$	64.4	$	373.8
Property lease revenue	2,476.0		683.1		573.6		399.0		837.9		391.0		5,360.6
Total revenue	$	2,703.7	$	687.5	$	585.9	$	407.7	$	894.2	$	455.4	$	5,734.4

Six Months Ended June 30, 2023	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers		Total
Non-lease property revenue	$	154.9	$	4.7	$	12.6	$	7.5	$	69.8	$	56.6	$	306.1
Services revenue	95.8		—		—		—		—		—		95.8
Total non-lease revenue	$	250.7	$	4.7	$	12.6	$	7.5	$	69.8	$	56.6	$	401.9
Property lease revenue	2,435.9		508.1		625.6		382.4		833.7		351.3		5,137.0
Total revenue	$	2,686.6	$	512.8	$	638.2	$	389.9	$	903.5	$	407.9	$	5,538.9

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PREPAID AND OTHER CURRENT ASSETS (Tables)

6 Months Ended

Jun. 30, 2024

Prepaid Expense and Other Assets, Current [Abstract]

Schedule of Prepaid and Other Current Assets

Prepaid and other current assets consisted of the following:

	As of
	June 30, 2024		December 31, 2023
Prepaid assets	$	111.4	$	93.4
Prepaid income tax	151.2		102.9
Unbilled receivables	362.7		323.2
Value added tax and other consumption tax receivables	41.9		79.8
Other miscellaneous current assets (1)	116.0		347.6
Prepaid and other current assets	$	783.2	$	946.9

_______________

(1)As of December 31, 2023, includes the VIL OCDs (as defined and further discussed in note 7).

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LEASES (Tables)

6 Months Ended

Jun. 30, 2024

Leases [Abstract]

Schedule of Future Minimum Rental Receipts Expected Under Operating Leases

Future minimum rental receipts expected under non-cancellable operating lease agreements as of June 30, 2024 were as follows:

Fiscal Year	Amount (1) (2)
Remainder of 2024	$	4,158.7
2025	7,845.4
2026	7,341.0
2027	7,112.4
2028	5,793.3
Thereafter	24,931.3
Total	$	57,182.1

_______________

(1)Balances are translated at the applicable period-end exchange rate, which may impact comparability between periods.    

(2)Balances represent contractual amounts owed with no adjustments made for expected collectibility.

Schedule of Information About Other Lease-Related Balances

Information about other lease-related balances is as follows:

	As of
	June 30, 2024		December 31, 2023
Operating leases:
Right-of-use asset	$	9,012.1	$	8,878.8
Current portion of lease liability	$	703.4	$	794.6
Lease liability	7,717.7		7,438.7
Total operating lease liability	$	8,421.1	$	8,233.3

Schedule of Components of Operating Lease Cost

The weighted-average remaining lease terms and incremental borrowing rates are as follows:

	As of
	June 30, 2024		December 31, 2023
Operating leases:
Weighted-average remaining lease term (years) (1)	13.4		11.6
Weighted-average incremental borrowing rate	6.7	%	5.8	%

______________

(1)As of June 30, 2024, reflects the change in estimated useful lives as described in note 1.

The following table sets forth the components of lease cost:

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Operating lease cost	$	327.0	$	313.9	$	653.4	$	620.6
Variable lease costs not included in lease liability (1)	93.7		114.5		182.9		223.6

______________

(1)Primarily includes property tax paid on behalf of the landlord.

Supplemental cash flow information is as follows:

	Six Months Ended June 30,
	2024		2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	(673.4)	$	(641.5)
Non-cash items:
New operating leases (1)	$	78.8	$	113.9
Operating lease modifications and reassessments (2)	$	713.8	$	191.3

______________

(1)Amount includes new operating leases and leases acquired in connection with acquisitions.

(2)For the six months ended June 30, 2024, reflects the change in estimated useful lives as described in note 1.

Schedule of Maturity of Operating Lease Liabilities

Maturities of operating lease liabilities as of June 30, 2024 were as follows:

Fiscal Year	Operating Lease (1)
Remainder of 2024	$	592.6
2025	1,114.8
2026	1,062.0
2027	1,005.2
2028	945.4
Thereafter	8,306.9
Total lease payments	13,026.9
Less amounts representing interest	(4,605.8)
Total lease liability	8,421.1
Less current portion of lease liability	703.4
Non-current lease liability	$	7,717.7

_______________

(1)Balances are translated at the applicable period-end exchange rate, which may impact comparability between periods.

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GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

6 Months Ended

Jun. 30, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Changes in the Carrying Value of Goodwill

The changes in the carrying value of goodwill for each of the Company’s business segments were as follows:

	Property												Services		Total
	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers
Balance as of January 1, 2024	$	4,638.6	$	562.7	$	497.7	$	3,051.9	$	966.1	$	2,920.0	$	2.0	$	12,639.0
Effect of foreign currency translation	(1.6)		(1.7)		14.7		(89.9)		(77.4)		—		—		(155.9)
Balance as of June 30, 2024	$	4,637.0	$	561.0	$	512.4	$	2,962.0	$	888.7	$	2,920.0	$	2.0	$	12,483.1

Schedule of Other Intangible Assets Subject to Amortization

The Company’s other intangible assets subject to amortization consisted of the following:

		As of June 30, 2024						As of December 31, 2023
	Estimated Useful Lives (years) (1)	Gross Carrying Value		Accumulated Amortization		Net Book Value		Gross Carrying Value		Accumulated Amortization		Net Book Value
Acquired network location intangibles (2)	Up to 30	$	5,867.6	$	(2,803.5)	$	3,064.1	$	5,981.5	$	(2,775.8)	$	3,205.7
Acquired tenant-related intangibles	Up to 30	18,564.2		(6,893.8)		11,670.4		18,894.5		(6,698.6)		12,195.9
Acquired licenses and other intangibles	2-30	1,490.8		(466.2)		1,024.6		1,561.1		(442.0)		1,119.1
Total other intangible assets		$	25,922.6	$	(10,163.5)	$	15,759.1	$	26,437.1	$	(9,916.4)	$	16,520.7

_______________

(1)As of June 30, 2024, reflects the change in estimated useful lives as described in note 1.

(2)Beginning January 1, 2024, acquired network location intangibles are amortized over the remaining estimated useful life of the tower, taking into account residual value, generally up to 30 years, as the Company considers these intangibles to be directly related to the tower assets. Prior to January 1, 2024, acquired network location intangibles were amortized over the shorter of the term of the corresponding ground lease, taking into consideration lease renewal options and residual value, or the estimated useful life of the tower, generally up to 20 years.

Schedule of Expected Future Amortization Expenses

Based on current exchange rates, the Company expects to record amortization expense as follows over the remainder of the current year and the five subsequent years:

Fiscal Year	Amount (1)
Remainder of 2024	$	466.0
2025	913.7
2026	875.6
2027	863.7
2028	852.2
2029	833.2

______________

(1)As of June 30, 2024, reflects the change in estimated useful lives as described in note 1.

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ACCRUED EXPENSES (Tables)

6 Months Ended

Jun. 30, 2024

Accrued Liabilities, Current [Abstract]

Schedule of Accrued Expenses

Accrued expenses consisted of the following:

	As of
	June 30, 2024		December 31, 2023
Accrued construction costs	$	145.0	$	183.8
Accrued income tax payable	28.1		21.0
Accrued pass-through costs	99.4		77.4
Amounts payable for acquisitions	2.0		27.7
Amounts payable to tenants	90.5		103.3
Accrued property and real estate taxes	301.9		295.5
Accrued rent	78.3		75.1
Payroll and related withholdings	107.6		147.4
Other accrued expenses	313.4		349.4
Total accrued expenses	$	1,166.2	$	1,280.6

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LONG-TERM OBLIGATIONS (Tables)

6 Months Ended

Jun. 30, 2024

Debt Disclosure [Abstract]

Schedule of Long-Term Debt Instruments

Outstanding amounts under the Company’s long-term obligations, reflecting discounts, premiums and debt issuance costs, consisted of the following:

	As of
	June 30, 2024		December 31, 2023		Maturity Date
2021 Multicurrency Credit Facility (1) (2)	$	1,170.0	$	723.4	July 1, 2026
2021 Term Loan (1)	997.4		997.0		January 31, 2027
2021 Credit Facility (1)	2,113.4		1,603.4		July 1, 2028
2021 EUR Three Year Delayed Draw Term Loan (1) (2) (3)	—		910.7		N/A
0.600% senior notes (4)	—		500.0		N/A
5.00% senior notes (5)	—		1,000.1		N/A
3.375% senior notes (6)	—		649.7		N/A
2.950% senior notes	649.1		648.2		January 15, 2025
2.400% senior notes	749.1		748.5		March 15, 2025
1.375% senior notes (7)	534.6		550.0		April 4, 2025
4.000% senior notes	748.7		748.1		June 1, 2025

1.300% senior notes	498.8	498.3	September 15, 2025
4.400% senior notes	499.0	498.7	February 15, 2026
1.600% senior notes	698.0	697.4	April 15, 2026
1.950% senior notes (7)	533.8	549.6	May 22, 2026
1.450% senior notes	596.7	595.9	September 15, 2026
3.375% senior notes	995.6	994.7	October 15, 2026
3.125% senior notes	399.1	398.9	January 15, 2027
2.750% senior notes	747.5	747.0	January 15, 2027
0.450% senior notes (7)	800.5	824.3	January 15, 2027
0.400% senior notes (7)	532.6	548.2	February 15, 2027
3.650% senior notes	645.6	644.8	March 15, 2027
4.125% senior notes (7)	639.6	658.6	May 16, 2027
3.55% senior notes	747.5	747.1	July 15, 2027
3.600% senior notes	696.5	696.0	January 15, 2028
0.500% senior notes (7)	799.0	822.8	January 15, 2028
1.500% senior notes	647.5	647.1	January 31, 2028
5.500% senior notes	694.3	693.6	March 15, 2028
5.250% senior notes	644.5	643.9	July 15, 2028
5.800% senior notes	744.0	743.4	November 15, 2028
5.200% senior notes	643.0	—	February 15, 2029
3.950% senior notes	594.2	593.7	March 15, 2029
0.875% senior notes (7)	799.7	823.7	May 21, 2029
3.800% senior notes	1,639.5	1,638.6	August 15, 2029
2.900% senior notes	744.7	744.2	January 15, 2030
3.900% senior notes (7)	530.6	—	May 16, 2030
2.100% senior notes	743.6	743.1	June 15, 2030
0.950% senior notes (7)	530.2	546.0	October 5, 2030
1.875% senior notes	793.8	793.3	October 15, 2030
2.700% senior notes	695.3	695.0	April 15, 2031
4.625% senior notes (7)	529.3	545.2	May 16, 2031
2.300% senior notes	693.1	692.7	September 15, 2031
1.000% senior notes (7)	690.7	711.5	January 15, 2032
4.050% senior notes	643.3	642.9	March 15, 2032
5.650% senior notes	791.0	790.6	March 15, 2033
1.250% senior notes (7)	529.8	545.8	May 21, 2033
5.550% senior notes	841.0	840.6	July 15, 2033
5.900% senior notes	741.8	741.5	November 15, 2033
5.450% senior notes	640.2	—	February 15, 2034
4.100% senior notes (7)	528.3	—	May 16, 2034
3.700% senior notes	592.5	592.4	October 15, 2049
3.100% senior notes	1,038.7	1,038.6	June 15, 2050
2.950% senior notes	1,023.5	1,023.2	January 15, 2051
Total American Tower Corporation debt	36,520.2	36,472.0
Series 2015-2 notes (8)	524.4	524.1	June 16, 2025
Series 2018-1A securities (9)	497.2	496.8	March 15, 2028
Series 2023-1A securities (10)	1,286.2	1,284.4	March 15, 2028
Other subsidiary debt (11)	119.9	123.6	Various
Total American Tower subsidiary debt	2,427.7	2,428.9
Finance lease obligations	20.5	20.6
Total	38,968.4	38,921.5
Less current portion of long-term obligations	(3,329.2)	(3,187.5)

Long-term obligations $ 35,639.2  $ 35,734.0 

_______________

(1)Accrues interest at a variable rate.

(2)As of December 31, 2023 reflects borrowings denominated in Euro (“EUR”) and, for the 2021 Multicurrency Credit Facility (as defined below), reflects borrowings denominated in both EUR and U.S. Dollars (“USD”).

(3)Repaid in full on May 21, 2024 using borrowings under the 2021 Multicurrency Credit Facility.

(4)Repaid in full on January 12, 2024 using borrowings under the 2021 Multicurrency Credit Facility.

(5)Repaid in full on February 14, 2024 using borrowings under the 2021 Multicurrency Credit Facility.

(6)Repaid in full on May 15, 2024 using borrowings under the 2021 Credit Facility.

(7)Notes are denominated in EUR.

(8)Maturity date reflects the anticipated repayment date; final legal maturity is June 15, 2050.

(9)Maturity date reflects the anticipated repayment date; final legal maturity is March 15, 2048.

(10)Maturity date reflects the anticipated repayment date; final legal maturity is March 15, 2053.

(11)Includes borrowings under an unsecured term loan in India (the “India Term Loan”), which is denominated in INR. In January 2024, the Company amended the India Term Loan to extend the maturity date to December 31, 2024. As of December 31, 2023, also includes amounts drawn under letters of credit in Nigeria, which are denominated in USD.

The key terms of the Notes are as follows:

Senior Notes	Aggregate Principal Amount (in millions)		Issue Date and Interest Accrual Date	Maturity Date	Contractual Interest Rate	First Interest Payment	Interest Payments Due (1)	Par Call Date (2)
5.200% Notes	$	650.0	March 7, 2024	February 15, 2029	5.200%	August 15, 2024	February 15 and August 15	January 15, 2029
5.450% Notes	$	650.0	March 7, 2024	February 15, 2034	5.450%	August 15, 2024	February 15 and August 15	November 15, 2033
3.900% Notes (3)	$	540.1	May 29, 2024	May 16, 2030	3.900%	May 16, 2025	May 16	February 16, 2030
4.100% Notes (3)	$	540.1	May 29, 2024	May 16, 2034	4.100%	May 16, 2025	May 16	February 16, 2034

___________

(1)Accrued and unpaid interest on USD denominated notes is payable in USD semi-annually in arrears and will be computed from the issue date on the basis of a 360-day year comprised of twelve 30-day months. Interest on EUR-denominated notes is payable in EUR annually and will be computed on the basis of the actual number of days in the period for which interest is being calculated and the actual number of days from and including the last date on which interest was paid on the notes, beginning on the issue date.

(2)The Company may redeem the Notes at any time, in whole or in part, at a redemption price equal to 100% of the principal amount of the Notes plus a make-whole premium, together with accrued interest to the redemption date. If the Company redeems the Notes on or after the par call date, the Company will not be required to pay a make-whole premium.

(3)The 3.900% Notes and the 4.100% Notes are denominated in EUR; dollar amounts represent the equivalent issuance date aggregate principal amount.

Schedule of Credit Facilities

As of June 30, 2024, the key terms under the 2021 Multicurrency Credit Facility, the 2021 Credit Facility and the Company’s $1.0 billion unsecured term loan, as amended and restated in December 2021, as further amended (the “2021 Term Loan”) were as follows:

	Outstanding Principal Balance (in millions)		Undrawn letters of credit (in millions)		Maturity Date		Current margin over SOFR or EURIBOR (1)		Current commitment fee (2)
2021 Multicurrency Credit Facility	$	1,170.0	$	3.5	July 1, 2026	(3)	1.125	%	0.110	%
2021 Credit Facility	2,113.4		30.4		July 1, 2028	(3)	1.125	%	0.110	%
2021 Term Loan	1,000.0		N/A		January 31, 2027		1.125	%	N/A

_______________

(1)SOFR applies to the USD denominated borrowings under the 2021 Multicurrency Credit Facility, the 2021 Credit Facility and the 2021 Term Loan.

(2)Fee on undrawn portion of each credit facility.

(3)Subject to two optional renewal periods.

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FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2024

Fair Value Disclosures [Abstract]

Schedule of Fair Value of Assets and Liabilities Measured on a Recurring Basis

The fair values of the Company’s financial assets and liabilities that are required to be measured on a recurring basis at fair value were as follows:

	June 30, 2024					December 31, 2023
	Fair Value Measurements Using					Fair Value Measurements Using
	Level 1		Level 2		Level 3	Level 1		Level 2		Level 3
Assets:
Investments in equity securities (1)	$	54.2	$	5.3	—	$	28.2	$	5.3	—
VIL OCDs	—		—		—	—		$	192.3	—

_______________

(1)Investments in equity securities are recorded in Notes receivable and other non-current assets in the consolidated balance sheet at fair value. Unrealized holding gains and losses for equity securities are recorded in Other income (expense) in the consolidated statements of operations in the current period. During the three and six months ended June 30, 2024 and 2023, the Company recognized unrealized gains (losses) of $40.7 million, $(1.8) million, $26.0 million and $(0.6) million, respectively, for equity securities held as of June 30, 2024.

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INCOME TAXES (Tables)

6 Months Ended

Jun. 30, 2024

Income Tax Disclosure [Abstract]

Schedule of Penalties and Income Tax-Related Interest Expense

The Company recorded the following penalties and income tax-related interest expense during the three and six months ended June 30, 2024 and 2023:

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Penalties and income tax-related interest expense	$	6.2	$	3.2	$	11.7	$	6.0

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STOCK-BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2024

Share-Based Payment Arrangement [Abstract]

Schedule of Stock-Based Compensation Expense

During the three and six months ended June 30, 2024 and 2023, the Company recorded the following stock-based compensation expense in selling, general, administrative and development expense:

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Stock-based compensation expense	$	46.3	$	49.4	$	111.2	$	114.9

Schedule of Option Activity

The Company’s option activity for the six months ended June 30, 2024 was as follows (shares disclosed in full amounts):

	Number of Options
Outstanding as of January 1, 2024	766,955
Exercised	(178,416)
Forfeited	—
Expired	—
Outstanding as of June 30, 2024	588,539

Schedule of Key Assumptions

Key assumptions used to apply this pricing model were as follows:

	Six Months Ended June 30, 2024
Expected term (years)	2.81
Risk-free interest rate	4.31	%
Annualized volatility	26.75	%

Schedule of RSU Activity

The Company’s RSU and PSU activity for the six months ended June 30, 2024 was as follows (shares disclosed in full amounts): 

	RSUs	PSUs
Outstanding as of January 1, 2024 (1)	1,638,711	363,488
Granted (2)	692,621	87,550
Vested and Released (3)	(667,001)	(144,925)
Forfeited	(24,680)	(1,337)
Outstanding as of June 30, 2024	1,639,651	304,776
Vested and deferred as of June 30, 2024 (4)	29,316	—

_______________

(1)PSUs consist of the target number of shares issuable at the end of the three-year performance period for the outstanding 2023 PSUs and the outstanding 2022 PSUs, or 118,684 shares and 98,542 shares, respectively, the shares issuable at the end of the three-year performance period for the PSUs granted in 2021 (the “2021 PSUs”) based on achievement against the performance metrics for the three-year performance period, or 127,318 shares and the target remaining number of shares issuable at the end of the one-year performance period for PSUs granted to certain non-executive employees during the year ended December 31, 2023, net of forfeitures, or 18,944 shares (the “Retention PSUs”).

(2)PSUs consist of the target number of shares issuable at the end of the three-year performance period for the 2024 PSUs, or 87,550 shares.

(3)PSUs consist of shares vested pursuant to the 2021 PSUs and the Retention PSUs. There are no additional shares to be earned related to the 2021 PSUs or the Retention PSUs.

(4)Vested and deferred RSUs are related to deferred compensation for certain former employees.

Schedule of PSU Activity

The Company’s RSU and PSU activity for the six months ended June 30, 2024 was as follows (shares disclosed in full amounts): 

	RSUs	PSUs
Outstanding as of January 1, 2024 (1)	1,638,711	363,488
Granted (2)	692,621	87,550
Vested and Released (3)	(667,001)	(144,925)
Forfeited	(24,680)	(1,337)
Outstanding as of June 30, 2024	1,639,651	304,776
Vested and deferred as of June 30, 2024 (4)	29,316	—

_______________

(1)PSUs consist of the target number of shares issuable at the end of the three-year performance period for the outstanding 2023 PSUs and the outstanding 2022 PSUs, or 118,684 shares and 98,542 shares, respectively, the shares issuable at the end of the three-year performance period for the PSUs granted in 2021 (the “2021 PSUs”) based on achievement against the performance metrics for the three-year performance period, or 127,318 shares and the target remaining number of shares issuable at the end of the one-year performance period for PSUs granted to certain non-executive employees during the year ended December 31, 2023, net of forfeitures, or 18,944 shares (the “Retention PSUs”).

(2)PSUs consist of the target number of shares issuable at the end of the three-year performance period for the 2024 PSUs, or 87,550 shares.

(3)PSUs consist of shares vested pursuant to the 2021 PSUs and the Retention PSUs. There are no additional shares to be earned related to the 2021 PSUs or the Retention PSUs.

(4)Vested and deferred RSUs are related to deferred compensation for certain former employees.

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EQUITY (Tables)

6 Months Ended

Jun. 30, 2024

Equity [Abstract]

Schedule of Cash Distributions

During the six months ended June 30, 2024, the Company declared or paid the following cash distributions (per share data reflects actual amounts):

Declaration Date	Payment Date	Record Date	Distribution per share		Aggregate Payment Amount (1)
Common Stock
May 23, 2024	July 12, 2024	June 14, 2024	$	1.62	$	756.7
March 14, 2024	April 26, 2024	April 12, 2024	$	1.62	$	756.5
December 13, 2023	February 1, 2024	December 28, 2023	$	1.70	$	792.7

_______________

(1)Does not include amounts accrued for distributions payable related to unvested restricted stock units.

During the six months ended June 30, 2023, the Company declared or paid the following cash distributions (per share data reflects actual amounts):

Declaration Date	Payment Date	Record Date	Distribution per share		Aggregate Payment Amount (1)
Common Stock
May 24, 2023	July 10, 2023	June 16, 2023	$	1.57	$	731.8
March 8, 2023	April 28, 2023	April 14, 2023	$	1.56	$	727.0
December 7, 2022	February 2, 2023	December 28, 2022	$	1.56	$	726.3

_______________

(1)Does not include amounts accrued for distributions payable related to unvested restricted stock units.

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NONCONTROLLING INTERESTS (Tables)

6 Months Ended

Jun. 30, 2024

Noncontrolling Interest [Abstract]

Schedule of Changes in Noncontrolling Interests

The changes in noncontrolling interests were as follows:

	Six Months Ended June 30,
	2024		2023
Balance as of January 1,	$	6,667.2	$	6,836.1
Net income (loss) attributable to noncontrolling interests	12.4		(35.0)
Foreign currency translation adjustment attributable to noncontrolling interests, net of tax	(119.7)		60.8
Contributions from noncontrolling interest holders (1)	152.4		10.5
Distributions to noncontrolling interest holders	(144.8)		(31.6)
Balance as of June 30,	$	6,567.5	$	6,840.8

_______________

(1)Six months ended June 30, 2024, includes contributions from Stonepeak of $137.3 million, including a noncash contribution of $37.5 million made in lieu of Stonepeak’s receipt of the Stonepeak Common Dividend and a noncash contribution from PGGM of $12.4 million made in lieu of PGGM’s receipt of a distribution.

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EARNINGS PER COMMON SHARE (Tables)

6 Months Ended

Jun. 30, 2024

Earnings Per Share [Abstract]

Schedule of Basic and Diluted Earnings Per Share

The following table sets forth basic and diluted net income per common share computational data (shares in thousands, except per share data):

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Net income attributable to American Tower Corporation common stockholders	$	900.3	$	475.7	$	1,817.7	$	811.5
Basic weighted average common shares outstanding	467,038		466,087		466,778		465,915
Dilutive securities	743		892		1,015		1,024
Diluted weighted average common shares outstanding	467,781		466,979		467,793		466,939
Basic net income attributable to American Tower Corporation common stockholders per common share	$	1.93	$	1.02	$	3.89	$	1.74
Diluted net income attributable to American Tower Corporation common stockholders per common share	$	1.92	$	1.02	$	3.89	$	1.74

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following shares were not included in the computation of diluted earnings per share because the effect would be anti-dilutive (in thousands, on a weighted average basis):

	Three Months Ended June 30,		Six Months Ended June 30,
	2024	2023	2024	2023
Restricted stock units	646	374	287	5

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BUSINESS SEGMENTS (Tables)

6 Months Ended

Jun. 30, 2024

Segment Reporting [Abstract]

Schedule of Summarized Financial Information Concerning the Company's Reportable Segments

Summarized financial information concerning the Company’s reportable segments for the three and six months ended June 30, 2024 and 2023 is shown in the following tables. The “Other” column (i) represents amounts excluded from specific segments, such as business development operations, stock-based compensation expense and corporate expenses included in Selling, general, administrative and development expense; Other operating expenses; Interest income; Interest expense; Gain (loss) on retirement of long-term obligations; and Other income (expense), and (ii) reconciles segment operating profit to Income from continuing operations before income taxes.

	Property												Total  Property		Services		Other		Total
Three Months Ended June 30, 2024	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers
Segment revenues	$	1,315.4	$	360.9	$	293.9	$	203.2	$	448.7	$	230.8	$	2,852.9	$	47.4			$	2,900.3
Segment operating expenses	220.6		174.0		96.4		73.2		136.4		99.3		799.9		22.0				821.9
Segment gross margin	1,094.8		186.9		197.5		130.0		312.3		131.5		2,053.0		25.4				2,078.4
Segment selling, general, administrative and development expense (1)	40.2		16.2		15.4		15.4		21.7		18.9		127.8		4.6				132.4
Segment operating profit	$	1,054.6	$	170.7	$	182.1	$	114.6	$	290.6	$	112.6	$	1,925.2	$	20.8			$	1,946.0
Stock-based compensation expense																	$	46.3	46.3
Other selling, general, administrative and development expense																	55.6		55.6
Depreciation, amortization and accretion																	561.7		561.7
Other expense (2)																	254.0		254.0
Income from continuing operations before income taxes																			$	1,028.4
Total assets	$	26,867.3	$	3,702.0	$	4,019.8	$	11,568.2	$	8,481.1	$	10,479.4	$	65,117.8	$	73.8	$	646.2	$	65,837.8

_______________

(1)Segment selling, general, administrative and development expenses exclude stock-based compensation expense of $46.3 million.

(2)Primarily includes interest expense and losses from foreign currency exchange rate fluctuations, partially offset by a gain of $46.4 million on the sales of the VIL Shares and the VIL OCDs and an unrealized gain from equity securities of $40.7 million.

	Property												Total  Property		Services		Other		Total
Three Months Ended June 30, 2023	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers
Segment revenues	$	1,303.2	$	261.7	$	321.2	$	198.2	$	439.4	$	204.9	$	2,728.6	$	43.1			$	2,771.7
Segment operating expenses	216.9		179.6		112.8		77.3		139.8		83.7		810.1		17.2				827.3
Segment gross margin	1,086.3		82.1		208.4		120.9		299.6		121.2		1,918.5		25.9				1,944.4
Segment selling, general, administrative and development expense (1)	41.7		17.4		18.7		15.1		23.5		18.6		135.0		5.3				140.3
Segment operating profit	$	1,044.6	$	64.7	$	189.7	$	105.8	$	276.1	$	102.6	$	1,783.5	$	20.6			$	1,804.1
Stock-based compensation expense																	$	49.4	49.4
Other selling, general, administrative and development expense																	54.7		54.7
Depreciation, amortization and accretion																	764.6		764.6
Other expense (2)																	460.7		460.7
Income from continuing operations before income taxes																			$	474.7
Total assets	$	26,595.2	$	3,941.7	$	4,180.6	$	11,659.8	$	9,229.1	$	10,549.7	$	66,156.1	$	102.9	$	620.0	$	66,879.0

_______________

(1)Segment selling, general, administrative and development expenses exclude stock-based compensation expense of $49.4 million.

(2)Primarily includes interest expense and losses from foreign currency exchange rate fluctuations. Three months ended June 30, 2023 also includes $37.5 million in impairment charges.

	Property												Total  Property		Services		Other		Total
Six Months Ended June 30, 2024	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers
Segment revenues	$	2,626.1	$	687.5	$	585.9	$	407.7	$	894.2	$	455.4	$	5,656.8	$	77.6			$	5,734.4
Segment operating expenses	424.9		344.7		189.1		146.7		276.7		192.2		1,574.3		35.9				1,610.2
Segment gross margin	2,201.2		342.8		396.8		261.0		617.5		263.2		4,082.5		41.7				4,124.2
Segment selling, general, administrative and development expense (1)	76.8		29.0		30.3		31.2		49.5		36.1		252.9		9.5				262.4
Segment operating profit	$	2,124.4	$	313.8	$	366.5	$	229.8	$	568.0	$	227.1	$	3,829.6	$	32.2			$	3,861.8
Stock-based compensation expense																	$	111.2	111.2
Other selling, general, administrative and development expense																	117.7		117.7
Depreciation, amortization and accretion																	1,111.1		1,111.1
Other expense (2)																	462.5		462.5
Income from continuing operations before income taxes																			$	2,059.3

_______________

(1)Segment selling, general, administrative and development expenses exclude stock-based compensation expense of $111.2 million.

(2)Primarily includes interest expense, partially offset by gains from foreign currency exchange rate fluctuations, a gain of $46.4 million on the sales of the VIL Shares and the VIL OCDs and an unrealized gain from equity securities of $26.0 million.

	Property												Total  Property		Services		Other		Total
Six Months Ended June 30, 2023	U.S. & Canada		Asia-Pacific		Africa		Europe		Latin America		Data Centers
Segment revenues	$	2,590.8	$	512.8	$	638.2	$	389.9	$	903.5	$	407.9	$	5,443.1	$	95.8			$	5,538.9
Segment operating expenses	422.2		348.0		231.3		150.4		277.7		167.5		1,597.1		36.3				1,633.4
Segment gross margin	2,168.6		164.8		406.9		239.5		625.8		240.4		3,846.0		59.5				3,905.5
Segment selling, general, administrative and development expense (1)	82.5		26.2		40.1		29.7		53.2		36.1		267.8		11.0				278.8
Segment operating profit	$	2,086.1	$	138.6	$	366.8	$	209.8	$	572.6	$	204.3	$	3,578.2	$	48.5			$	3,626.7
Stock-based compensation expense																	$	114.9	114.9
Other selling, general, administrative and development expense																	114.6		114.6
Depreciation, amortization and accretion																	1,558.7		1,558.7
Other expense (2)																	995.4		995.4
Income from continuing operations before income taxes																			$	843.1

_______________

(1)Segment selling, general, administrative and development expenses exclude stock-based compensation expense of $114.9 million.

(2)Primarily includes interest expense and losses from foreign currency exchange rate fluctuations. Six months ended June 30, 2023 also includes a net loss on the sales of one of the Company’s subsidiaries in Mexico that held fiber assets and the Company’s subsidiary in Poland of $78.9 million and $67.3 million in impairment charges.

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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) $ in Millions, ₨ in Billions	3 Months Ended		6 Months Ended					12 Months Ended	48 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2024 INR (₨)	Jun. 30, 2024 USD ($) segment	Jun. 30, 2024 INR (₨) segment	Jun. 30, 2023 USD ($)	Dec. 31, 2024 USD ($)	Aug. 31, 2026	Dec. 31, 2023 USD ($)
Concentration Risk [Line Items]
Number of reportable segments | segment					7	7
Increase to right-of-use asset	$ 9,012.1				$ 9,012.1					$ 8,878.8
Decrease to depreciation and amortization	(561.7)	$ (764.6)			(1,111.1)		$ (1,558.7)
Foreign currency exchange rate, remeasurement										11.95
Property straight-line revenue	73.7	120.8			152.7		232.8
Contribution of assets to equity method investment					14.6		0.0
Indian Customer
Concentration Risk [Line Items]
Deferred recognition of revenue		$ 31.7					$ 64.7
Revenue recognized	66.7				95.7
Service Life
Concentration Risk [Line Items]
Increase to right-of-use asset	$ 515.0				515.0
Settlement Dates
Concentration Risk [Line Items]
Increase in asset retirement obligations					470.0
Increase in estimated undiscounted future cash outlay					$ 875.0
Tower
Concentration Risk [Line Items]
Estimated useful life of the tower (in years)	30 years				30 years					20 years
Stonepeak Development Partnership
Concentration Risk [Line Items]
Contribution of assets to equity method investment	$ 14.6
Forecast | Service Life
Concentration Risk [Line Items]
Decrease to depreciation and amortization								$ 730.0
Forecast | Settlement Dates
Concentration Risk [Line Items]
Decrease to accretion expense								$ 75.0
Minimum
Concentration Risk [Line Items]
Operating history, period					20 years	20 years
ATC TIPL
Concentration Risk [Line Items]
Distribution received					$ 325.9	₨ 27.2
ATC TIPL | Forecast
Concentration Risk [Line Items]
Distribution received			$ 28.5	₨ 2.4
Data Infrastructure Trust (DIT) | ATC TIPL | Forecast | ATC TIPL
Concentration Risk [Line Items]
Equity method investment, ownership interest percentage			100.00%	100.00%				100.00%
Data Infrastructure Trust (DIT) | ATC TIPL | Maximum | Forecast
Concentration Risk [Line Items]
Consideration on sale of stocks			$ 2,500.0	₨ 210.0
U.S. | Data Centers | Common Stock
Concentration Risk [Line Items]
Percentage of ownership after transaction (as a percent)					72.00%	72.00%
U.S. | Data Centers | Common Stock | Forecast
Concentration Risk [Line Items]
Percentage of ownership after transaction (as a percent)									64.00%
Ghana | Asset Benchmark | Geographic Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage					1.00%	1.00%
Ghana | Revenue Benchmark | Geographic Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage					1.00%	1.00%
ATC Europe
Concentration Risk [Line Items]
Noncontrolling ownership interest percentage (as a percent)	52.00%				52.00%
Joint Venture - Bangladesh Operations
Concentration Risk [Line Items]
Ownership percentage (as a percent)	51.00%				51.00%
Stonepeak | U.S. | Data Centers | Common Stock
Concentration Risk [Line Items]
Ownership percentage by noncontrolling owners (as a percent)	28.00%				28.00%
Stonepeak | U.S. | Data Centers | Common Stock | Forecast
Concentration Risk [Line Items]
Ownership percentage by noncontrolling owners (as a percent)									36.00%
Stonepeak | U.S. | Data Centers | Preferred stock
Concentration Risk [Line Items]
Ownership percentage by noncontrolling owners (as a percent)	100.00%				100.00%
Germany
Concentration Risk [Line Items]
Ownership percentage by noncontrolling owners (as a percent)	13.00%				13.00%
Germany | ATC Europe
Concentration Risk [Line Items]
Noncontrolling ownership interest percentage (as a percent)	87.00%				87.00%
Ownership percentage by noncontrolling owners (as a percent)	87.00%				87.00%
Spain
Concentration Risk [Line Items]
Ownership percentage by noncontrolling owners (as a percent)	17.00%				17.00%
Spain | ATC Europe
Concentration Risk [Line Items]
Noncontrolling ownership interest percentage (as a percent)	83.00%				83.00%

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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Cash, Cash Equivalents, and Restricted Cash (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023	Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cash and cash equivalents	$ 2,492.1	$ 1,973.3	$ 2,015.7
Restricted cash	126.5	120.1	133.7
Total cash, cash equivalents and restricted cash	$ 2,618.6	$ 2,093.4	$ 2,149.4	$ 2,140.7

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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Total non-lease revenue	$ 198.6	$ 196.2	$ 373.8	$ 401.9
Property lease revenue	2,701.7	2,575.5	5,360.6	5,137.0
Total revenue	2,900.3	2,771.7	5,734.4	5,538.9
U.S. & Canada
Disaggregation of Revenue [Line Items]
Total non-lease revenue	124.6	127.0	227.7	250.7
Property lease revenue	1,238.2	1,219.3	2,476.0	2,435.9
Total revenue	1,362.8	1,346.3	2,703.7	2,686.6
Asia-Pacific
Disaggregation of Revenue [Line Items]
Total non-lease revenue	2.2	2.4	4.4	4.7
Property lease revenue	358.7	259.3	683.1	508.1
Total revenue	360.9	261.7	687.5	512.8
Africa
Disaggregation of Revenue [Line Items]
Total non-lease revenue	6.2	5.9	12.3	12.6
Property lease revenue	287.7	315.3	573.6	625.6
Total revenue	293.9	321.2	585.9	638.2
Europe
Disaggregation of Revenue [Line Items]
Total non-lease revenue	5.2	4.1	8.7	7.5
Property lease revenue	198.0	194.1	399.0	382.4
Total revenue	203.2	198.2	407.7	389.9
Latin America
Disaggregation of Revenue [Line Items]
Total non-lease revenue	27.6	28.5	56.3	69.8
Property lease revenue	421.1	410.9	837.9	833.7
Total revenue	448.7	439.4	894.2	903.5
Data Centers
Disaggregation of Revenue [Line Items]
Total non-lease revenue	32.8	28.3	64.4	56.6
Property lease revenue	198.0	176.6	391.0	351.3
Total revenue	230.8	204.9	455.4	407.9
Non-lease property revenue
Disaggregation of Revenue [Line Items]
Total non-lease revenue	151.2	153.1	296.2	306.1
Non-lease property revenue | U.S. & Canada
Disaggregation of Revenue [Line Items]
Total non-lease revenue	77.2	83.9	150.1	154.9
Non-lease property revenue | Asia-Pacific
Disaggregation of Revenue [Line Items]
Total non-lease revenue	2.2	2.4	4.4	4.7
Non-lease property revenue | Africa
Disaggregation of Revenue [Line Items]
Total non-lease revenue	6.2	5.9	12.3	12.6
Non-lease property revenue | Europe
Disaggregation of Revenue [Line Items]
Total non-lease revenue	5.2	4.1	8.7	7.5
Non-lease property revenue | Latin America
Disaggregation of Revenue [Line Items]
Total non-lease revenue	27.6	28.5	56.3	69.8
Non-lease property revenue | Data Centers
Disaggregation of Revenue [Line Items]
Total non-lease revenue	32.8	28.3	64.4	56.6
Services revenue
Disaggregation of Revenue [Line Items]
Total non-lease revenue	47.4	43.1	77.6	95.8
Services revenue | U.S. & Canada
Disaggregation of Revenue [Line Items]
Total non-lease revenue	47.4	43.1	77.6	95.8
Services revenue | Asia-Pacific
Disaggregation of Revenue [Line Items]
Total non-lease revenue	0.0	0.0	0.0	0.0
Services revenue | Africa
Disaggregation of Revenue [Line Items]
Total non-lease revenue	0.0	0.0	0.0	0.0
Services revenue | Europe
Disaggregation of Revenue [Line Items]
Total non-lease revenue	0.0	0.0	0.0	0.0
Services revenue | Latin America
Disaggregation of Revenue [Line Items]
Total non-lease revenue	0.0	0.0	0.0	0.0
Services revenue | Data Centers
Disaggregation of Revenue [Line Items]
Total non-lease revenue	$ 0.0	$ 0.0	$ 0.0	$ 0.0

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PREPAID AND OTHER CURRENT ASSETS (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Prepaid Expense and Other Assets, Current [Abstract]
Prepaid assets	$ 111.4	$ 93.4
Prepaid income tax	151.2	102.9
Unbilled receivables	362.7	323.2
Value added tax and other consumption tax receivables	41.9	79.8
Other miscellaneous current assets	116.0	347.6
Prepaid and other current assets	$ 783.2	$ 946.9

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LEASES - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Lessor, Lease, Description [Line Items]
Amortization of lease incentive, period			10 years
Right-of-use asset	$ 9,012.1		$ 9,012.1		$ 8,878.8
Service Life
Lessor, Lease, Description [Line Items]
Right-of-use asset	515.0		515.0
Lease Agreements
Lessor, Lease, Description [Line Items]
Asset impairment charges	0.0	$ 0.0	0.0	$ 0.0
Other Current Assets
Lessor, Lease, Description [Line Items]
Lease incentives	35.8		35.8
Other Noncurrent Assets
Lessor, Lease, Description [Line Items]
Lease incentives	$ 333.0		$ 333.0

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LEASES - Future Minimum Rental Receipts Expected Under Operating Leases (Details) $ in Millions	Jun. 30, 2024 USD ($)
Leases [Abstract]
Remainder of 2024	$ 4,158.7
2025	7,845.4
2026	7,341.0
2027	7,112.4
2028	5,793.3
Thereafter	24,931.3
Total	$ 57,182.1

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LEASES - Information About Other Lease-related Balances (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Operating leases:
Right-of-use asset	$ 9,012.1	$ 8,878.8
Current portion of lease liability	703.4	794.6
Lease liability	7,717.7	7,438.7
Total lease liability	$ 8,421.1	$ 8,233.3

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LEASES - Weighted Average Lease Terms and Discount Rates (Details)	Jun. 30, 2024	Dec. 31, 2023
Operating leases:
Weighted-average remaining lease term (years)	13 years 4 months 24 days	11 years 7 months 6 days
Weighted-average incremental borrowing rate	6.70%	5.80%

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LEASES - Lease Costs (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Leases [Abstract]
Operating lease cost	$ 327.0	$ 313.9	$ 653.4	$ 620.6
Variable lease costs not included in lease liability	$ 93.7	$ 114.5	$ 182.9	$ 223.6

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LEASES - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ (673.4)	$ (641.5)
Non-cash items:
New operating leases	78.8	113.9
Operating lease modifications and reassessments	$ 713.8	$ 191.3

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LEASES - Maturities of Operating Lease Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Leases [Abstract]
Remainder of 2024	$ 592.6
2025	1,114.8
2026	1,062.0
2027	1,005.2
2028	945.4
Thereafter	8,306.9
Total lease payments	13,026.9
Less amounts representing interest	(4,605.8)
Total lease liability	8,421.1	$ 8,233.3
Less current portion of lease liability	703.4	794.6
Non-current lease liability	$ 7,717.7	$ 7,438.7

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GOODWILL AND OTHER INTANGIBLE ASSETS - Changes in the Carrying Value of Goodwill (Details) $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 12,639.0
Effect of foreign currency translation	(155.9)
Goodwill, ending balance	12,483.1
U.S. & Canada
Goodwill [Roll Forward]
Goodwill, beginning balance	4,638.6
Effect of foreign currency translation	(1.6)
Goodwill, ending balance	4,637.0
Asia-Pacific
Goodwill [Roll Forward]
Goodwill, beginning balance	562.7
Effect of foreign currency translation	(1.7)
Goodwill, ending balance	561.0
Africa
Goodwill [Roll Forward]
Goodwill, beginning balance	497.7
Effect of foreign currency translation	14.7
Goodwill, ending balance	512.4
Europe
Goodwill [Roll Forward]
Goodwill, beginning balance	3,051.9
Effect of foreign currency translation	(89.9)
Goodwill, ending balance	2,962.0
Latin America
Goodwill [Roll Forward]
Goodwill, beginning balance	966.1
Effect of foreign currency translation	(77.4)
Goodwill, ending balance	888.7
Data Centers
Goodwill [Roll Forward]
Goodwill, beginning balance	2,920.0
Effect of foreign currency translation	0.0
Goodwill, ending balance	2,920.0
Services
Goodwill [Roll Forward]
Goodwill, beginning balance	2.0
Effect of foreign currency translation	0.0
Goodwill, ending balance	$ 2.0

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GOODWILL AND OTHER INTANGIBLE ASSETS - Other Intangible Assets Subject to Amortization (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 25,922.6	$ 26,437.1
Accumulated Amortization	(10,163.5)	(9,916.4)
Net Book Value	15,759.1	16,520.7
Acquired network location intangibles
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	5,867.6	5,981.5
Accumulated Amortization	(2,803.5)	(2,775.8)
Net Book Value	$ 3,064.1	$ 3,205.7
Acquired network location intangibles | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Lives (years)	30 years	20 years
Acquired tenant-related intangibles
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 18,564.2	$ 18,894.5
Accumulated Amortization	(6,893.8)	(6,698.6)
Net Book Value	$ 11,670.4	12,195.9
Acquired tenant-related intangibles | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Lives (years)	30 years
Acquired licenses and other intangibles
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 1,490.8	1,561.1
Accumulated Amortization	(466.2)	(442.0)
Net Book Value	$ 1,024.6	$ 1,119.1
Acquired licenses and other intangibles | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Lives (years)	2 years
Acquired licenses and other intangibles | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Lives (years)	30 years

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GOODWILL AND OTHER INTANGIBLE ASSETS - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 237.3	$ 358.2	$ 479.8	$ 727.7
Weighted Average
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, remaining amortization period	20 years		20 years

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GOODWILL AND OTHER INTANGIBLE ASSETS - Expected Future Amortization Expenses (Details) $ in Millions	Jun. 30, 2024 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Remainder of 2024	$ 466.0
2025	913.7
2026	875.6
2027	863.7
2028	852.2
2029	$ 833.2

XML

ACCRUED EXPENSES (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Accrued Liabilities, Current [Abstract]
Accrued construction costs	$ 145.0	$ 183.8
Accrued income tax payable	28.1	21.0
Accrued pass-through costs	99.4	77.4
Amounts payable for acquisitions	2.0	27.7
Amounts payable to tenants	90.5	103.3
Accrued property and real estate taxes	301.9	295.5
Accrued rent	78.3	75.1
Payroll and related withholdings	107.6	147.4
Other accrued expenses	313.4	349.4
Total accrued expenses	$ 1,166.2	$ 1,280.6

XML

LONG-TERM OBLIGATIONS - Long-Term Debt Obligations (Details) € in Millions	Jun. 30, 2024 USD ($)	May 29, 2024 USD ($)	May 21, 2024 USD ($)	May 21, 2024 EUR (€)	May 15, 2024 USD ($)	Mar. 07, 2024 USD ($)	Feb. 14, 2024 USD ($)	Jan. 12, 2024 USD ($)	Dec. 31, 2023 USD ($)
Debt Instrument [Line Items]
Finance lease obligations	$ 20,500,000								$ 20,600,000
Total	38,968,400,000								38,921,500,000
Less current portion of long-term obligations	(3,329,200,000)								(3,187,500,000)
Long-term obligations	35,639,200,000								35,734,000,000
American Tower Corporation
Debt Instrument [Line Items]
Long-term debt	36,520,200,000								36,472,000,000
American Tower subsidiary
Debt Instrument [Line Items]
Long-term debt	2,427,700,000								2,428,900,000
2021 Multicurrency Credit Facility | Revolving Credit Facility | American Tower Corporation
Debt Instrument [Line Items]
Long-term debt	1,170,000,000								723,400,000
2021 Term Loan | Unsecured debt | American Tower Corporation
Debt Instrument [Line Items]
Long-term debt	997,400,000								997,000,000.0
2021 Credit Facility | Revolving Credit Facility | American Tower Corporation
Debt Instrument [Line Items]
Long-term debt	2,113,400,000								1,603,400,000
2021 EUR Three Year Delayed Draw Term Loan | Unsecured debt | American Tower Corporation
Debt Instrument [Line Items]
Long-term debt	0		$ 895,500,000	€ 825					$ 910,700,000
0.600% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)								0.60%	0.60%
Long-term debt	0							$ 0	$ 500,000,000.0
5.00% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)							5.00%		5.00%
Long-term debt	0						$ 0		$ 1,000,100,000
3.375% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)					3.375%				3.375%
Long-term debt	$ 0				$ 0				$ 649,700,000
2.950% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	2.95%
Long-term debt	$ 649,100,000								648,200,000
2.400% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	2.40%
Long-term debt	$ 749,100,000								748,500,000
1.375% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	1.375%
Long-term debt	$ 534,600,000								550,000,000.0
4.000% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	4.00%
Long-term debt	$ 748,700,000								748,100,000
1.300% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	1.30%
Long-term debt	$ 498,800,000								498,300,000
4.400% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	4.40%
Long-term debt	$ 499,000,000.0								498,700,000
1.600% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	1.60%
Long-term debt	$ 698,000,000.0								697,400,000
1.950% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	1.95%
Long-term debt	$ 533,800,000								549,600,000
1.450% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	1.45%
Long-term debt	$ 596,700,000								595,900,000
3.375% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	3.375%
Long-term debt	$ 995,600,000								994,700,000
3.125% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	3.125%
Long-term debt	$ 399,100,000								398,900,000
2.750% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	2.75%
Long-term debt	$ 747,500,000								747,000,000.0
0.450% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	0.45%
Long-term debt	$ 800,500,000								824,300,000
0.400% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	0.40%
Long-term debt	$ 532,600,000								548,200,000
3.650% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	3.65%
Long-term debt	$ 645,600,000								644,800,000
4.125% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	4.125%
Long-term debt	$ 639,600,000								658,600,000
3.55% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	3.55%
Long-term debt	$ 747,500,000								747,100,000
3.600% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	3.60%
Long-term debt	$ 696,500,000								696,000,000.0
0.500% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	0.50%
Long-term debt	$ 799,000,000.0								822,800,000
1.500% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	1.50%
Long-term debt	$ 647,500,000								647,100,000
5.500% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	5.50%
Long-term debt	$ 694,300,000								693,600,000
5.250% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	5.25%
Long-term debt	$ 644,500,000								643,900,000
5.800% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	5.80%
Long-term debt	$ 744,000,000.0								743,400,000
5.200% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	5.20%					5.20%
Long-term debt	$ 643,000,000.0					$ 650,000,000.0			0
3.950% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	3.95%
Long-term debt	$ 594,200,000								593,700,000
0.875% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	0.875%
Long-term debt	$ 799,700,000								823,700,000
3.800% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	3.80%
Long-term debt	$ 1,639,500,000								1,638,600,000
2.900% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	2.90%
Long-term debt	$ 744,700,000								744,200,000
3.900% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	3.90%	3.90%
Long-term debt	$ 530,600,000	$ 540,100,000							0
2.100% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	2.10%
Long-term debt	$ 743,600,000								743,100,000
0.950% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	0.95%
Long-term debt	$ 530,200,000								546,000,000.0
1.875% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	1.875%
Long-term debt	$ 793,800,000								793,300,000
2.700% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	2.70%
Long-term debt	$ 695,300,000								695,000,000.0
4.625% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	4.625%
Long-term debt	$ 529,300,000								545,200,000
2.300% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	2.30%
Long-term debt	$ 693,100,000								692,700,000
1.000% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	1.00%
Long-term debt	$ 690,700,000								711,500,000
4.050% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	4.05%
Long-term debt	$ 643,300,000								642,900,000
5.650% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	5.65%
Long-term debt	$ 791,000,000.0								790,600,000
1.250% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	1.25%
Long-term debt	$ 529,800,000								545,800,000
5.550% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	5.55%
Long-term debt	$ 841,000,000.0								840,600,000
5.900% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	5.90%
Long-term debt	$ 741,800,000								741,500,000
5.450% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	5.45%					5.45%
Long-term debt	$ 640,200,000					$ 650,000,000.0			0
4.100% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	4.10%	4.10%
Long-term debt	$ 528,300,000	$ 540,100,000							0
3.700% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	3.70%
Long-term debt	$ 592,500,000								592,400,000
3.100% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	3.10%
Long-term debt	$ 1,038,700,000								1,038,600,000
2.950% senior notes | Senior notes | American Tower Corporation
Debt Instrument [Line Items]
Debt interest rate (as a percent)	2.95%
Long-term debt	$ 1,023,500,000								1,023,200,000
Series 2015-2 notes | Secured debt | American Tower subsidiary
Debt Instrument [Line Items]
Long-term debt	524,400,000								524,100,000
Series 2018-1A securities | Secured debt | American Tower subsidiary
Debt Instrument [Line Items]
Long-term debt	497,200,000								496,800,000
Series 2023-1A Securities | Secured debt | American Tower subsidiary
Debt Instrument [Line Items]
Long-term debt	1,286,200,000								1,284,400,000
Other subsidiary debt | Unsecured debt | American Tower subsidiary
Debt Instrument [Line Items]
Long-term debt	$ 119,900,000								$ 123,600,000

XML

LONG-TERM OBLIGATIONS - Current Portion of Long-Term Obligations (Details) € in Millions, $ in Millions	Jun. 30, 2024 USD ($)	Jun. 30, 2024 EUR (€)	Dec. 31, 2023 USD ($)
Debt Instrument [Line Items]
Current portion of long-term obligations	$ 3,329.2		$ 3,187.5
American Tower Corporation | Senior notes | 2.950% senior notes
Debt Instrument [Line Items]
Current portion of long-term obligations	$ 650.0
Debt interest rate (as a percent)	2.95%	2.95%
American Tower Corporation | Senior notes | 2.400% senior notes
Debt Instrument [Line Items]
Current portion of long-term obligations	$ 750.0
Debt interest rate (as a percent)	2.40%	2.40%
American Tower Corporation | Senior notes | 1.375% senior notes
Debt Instrument [Line Items]
Current portion of long-term obligations | €		€ 500.0
Debt interest rate (as a percent)	1.375%	1.375%
American Tower Corporation | Senior notes | 4.000% senior notes
Debt Instrument [Line Items]
Current portion of long-term obligations	$ 750.0
Debt interest rate (as a percent)	4.00%	4.00%
American Tower subsidiary | Secured debt | Series 2015-2 notes
Debt Instrument [Line Items]
Current portion of long-term obligations	$ 525.0

XML

LONG-TERM OBLIGATIONS - Repayments of Senior Notes (Details) - American Tower Corporation - USD ($)	May 15, 2024	Feb. 14, 2024	Jan. 12, 2024	Jun. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Long-term debt				$ 36,520,200,000	$ 36,472,000,000
0.600% senior notes | Senior notes
Debt Instrument [Line Items]
Debt interest rate (as a percent)			0.60%		0.60%
Aggregate principal amount			$ 500,000,000
Long-term debt			$ 0	0	$ 500,000,000.0
5.00% senior notes | Senior notes
Debt Instrument [Line Items]
Debt interest rate (as a percent)		5.00%			5.00%
Aggregate principal amount		$ 1,000,000,000
Long-term debt		$ 0		0	$ 1,000,100,000
3.375% senior notes | Senior notes
Debt Instrument [Line Items]
Debt interest rate (as a percent)	3.375%				3.375%
Aggregate principal amount	$ 650,000,000
Long-term debt	$ 0			$ 0	$ 649,700,000

XML

LONG-TERM OBLIGATIONS - Offerings of Senior Notes (Details) € in Millions, $ in Millions				6 Months Ended
	May 29, 2024 USD ($)	May 29, 2024 EUR (€)	Mar. 07, 2024 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	May 29, 2024 EUR (€)
Debt Instrument [Line Items]
Proceeds from issuance of senior long-term debt				$ 2,374.1	$ 4,182.3
Redemption price percentage				101.00%
Maximum adjusted EBITDA				3.5
Senior notes
Debt Instrument [Line Items]
Redemption price percentage				100.00%
American Tower Corporation | Senior notes | 5.200% senior notes and 5.450% senior notes
Debt Instrument [Line Items]
Proceeds from issuance of senior long-term debt			$ 1,281.3
American Tower Corporation | Senior notes | 5.200% senior notes
Debt Instrument [Line Items]
Debt interest rate (as a percent)			5.20%	5.20%
Debt face amount			$ 650.0
American Tower Corporation | Senior notes | 5.450% senior notes
Debt Instrument [Line Items]
Debt interest rate (as a percent)			5.45%	5.45%
Debt face amount			$ 650.0
American Tower Corporation | Senior notes | 3.900% senior notes and 4.100% senior notes
Debt Instrument [Line Items]
Proceeds from issuance of senior long-term debt	$ 1,067.5	€ 988.4
American Tower Corporation | Senior notes | 3.900% senior notes
Debt Instrument [Line Items]
Debt interest rate (as a percent)	3.90%			3.90%		3.90%
Debt face amount	$ 540.1					€ 500.0
American Tower Corporation | Senior notes | 4.100% senior notes
Debt Instrument [Line Items]
Debt interest rate (as a percent)	4.10%			4.10%		4.10%
Debt face amount	$ 540.1					€ 500.0

XML

LONG-TERM OBLIGATIONS - Key Terms of Notes (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	May 29, 2024	Mar. 07, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Redemption price percentage	101.00%
Senior notes
Debt Instrument [Line Items]
Redemption price percentage	100.00%
American Tower Corporation
Debt Instrument [Line Items]
Aggregate principal amount	$ 36,520.2			$ 36,472.0
American Tower Corporation | Senior notes | 5.200% senior notes
Debt Instrument [Line Items]
Debt interest rate (as a percent)	5.20%		5.20%
Aggregate principal amount	$ 643.0		$ 650.0	0.0
American Tower Corporation | Senior notes | 5.450% senior notes
Debt Instrument [Line Items]
Debt interest rate (as a percent)	5.45%		5.45%
Aggregate principal amount	$ 640.2		$ 650.0	0.0
American Tower Corporation | Senior notes | 3.900% senior notes
Debt Instrument [Line Items]
Debt interest rate (as a percent)	3.90%	3.90%
Aggregate principal amount	$ 530.6	$ 540.1		0.0
American Tower Corporation | Senior notes | 4.100% senior notes
Debt Instrument [Line Items]
Debt interest rate (as a percent)	4.10%	4.10%
Aggregate principal amount	$ 528.3	$ 540.1		$ 0.0

XML

LONG-TERM OBLIGATIONS - Bank Facilities (Details) € in Millions		6 Months Ended
	May 21, 2024 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2024 EUR (€)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 EUR (€)	May 21, 2024 EUR (€)	May 15, 2024 USD ($)	Feb. 14, 2024 USD ($)	Jan. 12, 2024 USD ($)	Dec. 31, 2023 USD ($)
Line of Credit Facility [Line Items]
Borrowings under credit facilities		$ 5,097,900,000		$ 4,780,000,000
American Tower Corporation
Line of Credit Facility [Line Items]
Long-term debt		36,520,200,000								$ 36,472,000,000
0.600% senior notes | American Tower Corporation | Senior notes
Line of Credit Facility [Line Items]
Debt interest rate (as a percent)									0.60%	0.60%
Long-term debt		0							$ 0	$ 500,000,000.0
5.00% senior notes | American Tower Corporation | Senior notes
Line of Credit Facility [Line Items]
Debt interest rate (as a percent)								5.00%		5.00%
Long-term debt		0						$ 0		$ 1,000,100,000
2021 EUR Three Year Delayed Draw Term Loan | American Tower Corporation | Unsecured debt
Line of Credit Facility [Line Items]
Debt instrument term	3 years
Long-term debt	$ 895,500,000	0				€ 825.0				$ 910,700,000
3.375% senior notes | American Tower Corporation | Senior notes
Line of Credit Facility [Line Items]
Debt interest rate (as a percent)							3.375%			3.375%
Long-term debt		0					$ 0			$ 649,700,000
Revolving Credit Facility | 2021 Multicurrency Credit Facility | American Tower Corporation
Line of Credit Facility [Line Items]
Borrowings under credit facilities		3,600,000,000
Repayment of indebtedness under credit facility		3,100,000,000
Line of credit maximum borrowing capacity		6,000,000,000
Long-term debt		1,170,000,000								723,400,000
Revolving Credit Facility | 2021 Multicurrency Credit Facility In Euros | American Tower Corporation
Line of Credit Facility [Line Items]
Borrowings under credit facilities		1,000,000,000	€ 900.0
Repayment of indebtedness under credit facility		1,200,000,000	€ 1,100.0
Long-term debt | €					€ 0.0
Revolving Credit Facility | 2021 Credit Facility | American Tower Corporation
Line of Credit Facility [Line Items]
Borrowings under credit facilities		1,500,000,000
Repayment of indebtedness under credit facility		1,000,000,000
Line of credit maximum borrowing capacity		4,000,000,000
Long-term debt		$ 2,113,400,000								$ 1,603,400,000

XML

LONG-TERM OBLIGATIONS - Credit Facilities and Term Loans (Details) - American Tower Corporation $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($) renewalPeriod	Dec. 31, 2023 USD ($)
Line of Credit Facility [Line Items]
Long-term debt	$ 36,520.2	$ 36,472.0
Revolving Credit Facility
Line of Credit Facility [Line Items]
Number of optional renewal periods | renewalPeriod	2
2021 Multicurrency Credit Facility | Revolving Credit Facility
Line of Credit Facility [Line Items]
Long-term debt	$ 1,170.0	723.4
Outstanding principal balance	1,170.0
Undrawn letters of credit	$ 3.5
Current margin over LIBOR or EURIBOR	1.125%
Current commitment fee, percentage	0.11%
2021 Credit Facility | Revolving Credit Facility
Line of Credit Facility [Line Items]
Long-term debt	$ 2,113.4	1,603.4
Outstanding principal balance	2,113.4
Undrawn letters of credit	$ 30.4
Current margin over LIBOR or EURIBOR	1.125%
Current commitment fee, percentage	0.11%
2021 Term Loan | Unsecured debt
Line of Credit Facility [Line Items]
Long-term debt	$ 997.4	$ 997.0
Outstanding principal balance	$ 1,000.0
Current margin over LIBOR or EURIBOR	1.125%

XML

FAIR VALUE MEASUREMENTS - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) $ in Millions, ₨ in Billions	3 Months Ended		6 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 05, 2024 USD ($)	Jun. 05, 2024 INR (₨)	Mar. 23, 2024 USD ($)	Mar. 23, 2024 INR (₨)	Dec. 31, 2023 USD ($)
Assets:
Unrealized gains (losses) on equity securities	$ 40.7	$ (1.8)	$ 26.0	$ (0.6)
VIL
Assets:
Investments in equity securities	0.0		0.0
VIL | OCDs
Assets:
Debt securities	0.0		0.0		$ 19.2	₨ 1.6	$ 172.7	₨ 14.4
Fair Value, Measurements, Recurring | Level 1
Assets:
Investments in equity securities	54.2		54.2						$ 28.2
Fair Value, Measurements, Recurring | Level 1 | VIL | OCDs
Assets:
Debt securities	0.0		0.0						0.0
Fair Value, Measurements, Recurring | Level 2
Assets:
Investments in equity securities	5.3		5.3						5.3
Fair Value, Measurements, Recurring | Level 2 | VIL | OCDs
Assets:
Debt securities	0.0		0.0						192.3
Fair Value, Measurements, Recurring | Level 3
Assets:
Investments in equity securities	0.0		0.0						0.0
Fair Value, Measurements, Recurring | Level 3 | VIL | OCDs
Assets:
Debt securities	$ 0.0		$ 0.0						$ 0.0

XML

FAIR VALUE MEASUREMENTS - Narrative (Details) ₨ / shares in Units, shares in Millions, $ in Millions, ₨ in Billions						3 Months Ended		6 Months Ended
	Jun. 05, 2024 USD ($)	Jun. 05, 2024 INR (₨)	Apr. 29, 2024 USD ($) shares	Apr. 29, 2024 INR (₨) ₨ / shares shares	Mar. 23, 2024 USD ($) shares	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 05, 2024 INR (₨)	Mar. 23, 2024 INR (₨)	Dec. 31, 2023 USD ($)	Feb. 28, 2023 USD ($)	Feb. 28, 2023 INR (₨)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset impairments						$ 0.0	$ 0.0	$ 0.0	$ 0.0
Long-term obligations						38,968.4		38,968.4				$ 38,921.5
Estimate of Fair Value Measurement
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Long-term debt, fair value						36,400.0		36,400.0				36,700.0
Estimate of Fair Value Measurement | Level 1
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Long-term debt, fair value						29,700.0		29,700.0				30,000.0
Estimate of Fair Value Measurement | Level 2
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Long-term debt, fair value						6,700.0		6,700.0				$ 6,700.0
VIL
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Number of converted shares | shares					1,440
Equity shares sold (in shares) | shares			1,440	1,440
Price per share (in INR per share) | ₨ / shares				₨ 12.78
Net proceeds			$ 216.0	₨ 18.0
Debt and equity securities, realized gain						46.4		46.4
Equity securities						0.0		0.0
OCDs | VIL
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt securities	$ 19.2				$ 172.7	$ 0.0		$ 0.0		₨ 1.6	₨ 14.4
Not proceeds from sale of debt securities	$ 22.0	₨ 1.8
OCDs | VIL
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
VIL OCDs, face value													$ 193.2	₨ 16.0
Debt securities													$ 116.5
Debt securities, interest rate (as a percent)													11.20%	11.20%
OCDs | VIL | Maturing on August 27, 2023
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
VIL OCDs, face value													$ 96.6	₨ 8.0
OCDs | VIL | Maturing on August 27, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
VIL OCDs, face value													$ 96.6	₨ 8.0

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INCOME TAXES - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Income Tax Contingency [Line Items]
Unrecognized tax benefits that would impact the ETR	$ 121.3	$ 121.3	$ 130.7
Unrecognized tax benefits, increase due to current period tax positions	1.6	2.6
Unrecognized tax benefits, decrease due to foreign currency translation	7.6	7.2
Unrecognized tax benefits, decrease due to prior period tax positions and settlements	3.4	3.4
Unrecognized tax benefits, decrease due to expiration of statute of limitations	1.4	1.4
Unrecognized tax benefits, income tax penalties and interest accrued	68.6	68.6	$ 62.8
Minimum
Income Tax Contingency [Line Items]
Decrease in unrecognized tax benefits is reasonably possible	0.0	0.0
Maximum
Income Tax Contingency [Line Items]
Decrease in unrecognized tax benefits is reasonably possible	$ 10.2	$ 10.2

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INCOME TAXES - Penalties and Income Tax Related Expenses (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Tax Disclosure [Abstract]
Penalties and income tax-related interest expense	$ 6.2	$ 3.2	$ 11.7	$ 6.0

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STOCK-BASED COMPENSATION - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 09, 2023	Dec. 31, 2022	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Discount from market price (in percent)					15.00%
Stock-based compensation expense			$ 46.3	$ 49.4	$ 111.2	$ 114.9
2007 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issuable under stock incentive plan (in shares)			3,300,000		3,300,000
Stock Options and Time-Based Restricted Stock Units | 2007 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years	3 years
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense			$ 0.0		$ 0.0
Stock Options | 2007 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period					10 years
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)					692,621
Restricted stock units | 2007 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense			217.4		$ 217.4
Restricted stock units | 2007 Plan | Weighted Average
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected weighted average recognition period					2 years
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					3 years
Unrecognized compensation expense			15.4		$ 15.4
Expected weighted average recognition period					2 years
Awards granted (in shares)					87,550
Stock-based compensation expense			$ 7.2		$ 16.3
Performance Shares | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of potential target shares					0.00%
Performance Shares | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of potential target shares					200.00%
Performance Shares | 2007 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					3 years
Performance Shares | 2024 PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)					87,550
Weighted average grant date fair value (in dollars per share)			$ 216.11		$ 216.11
Performance Shares | 2023 PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)							118,684
Performance Shares | 2022 PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)								98,542

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STOCK-BASED COMPENSATION - Stock-Based Compensation Expense (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Share-Based Payment Arrangement [Abstract]
Stock-based compensation expense	$ 46.3	$ 49.4	$ 111.2	$ 114.9

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STOCK-BASED COMPENSATION - Option Activity (Details)	6 Months Ended
	Jun. 30, 2024 shares
Number of Options
Outstanding at beginning of period (in shares)	766,955
Exercised (in shares)	(178,416)
Forfeited (in shares)	0
Expired (in shares)	0
Outstanding at end of period (in shares)	588,539

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STOCK-BASED COMPENSATION - Key Assumptions (Details) - PSUs - 2024 PSUs	6 Months Ended
	Jun. 30, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (years)	2 years 9 months 21 days
Risk-free interest rate	4.31%
Annualized volatility	26.75%

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STOCK-BASED COMPENSATION - Restricted Stock Activity (Details) - shares	6 Months Ended	12 Months Ended
	Jun. 30, 2024	Dec. 31, 2023	Dec. 31, 2022
RSUs
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Outstanding at beginning of period (in shares)	1,638,711
Granted (in shares)	692,621
Vested and Released (in shares)	(667,001)
Forfeited (in shares)	(24,680)
Outstanding at end of period (in shares)	1,639,651	1,638,711
Vested and deferred (in shares)	29,316
PSUs
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Outstanding at beginning of period (in shares)	363,488
Granted (in shares)	87,550
Vested and Released (in shares)	(144,925)
Forfeited (in shares)	(1,337)
Outstanding at end of period (in shares)	304,776	363,488
Vested and deferred (in shares)	0
PSUs | 2023 PSUs
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Outstanding at beginning of period (in shares)	118,684
Granted (in shares)		118,684
Outstanding at end of period (in shares)		118,684
Performance period		3 years
PSUs | 2022 PSUs
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Outstanding at beginning of period (in shares)	98,542
Granted (in shares)			98,542
Outstanding at end of period (in shares)		98,542
Performance period		3 years
PSUs | 2021 PSUs
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Outstanding at beginning of period (in shares)	127,318
Outstanding at end of period (in shares)		127,318
Performance period		3 years
PSUs | Retention PSUs
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Outstanding at beginning of period (in shares)	18,944
Outstanding at end of period (in shares)		18,944
Performance period		1 year
PSUs | 2024 PSUs
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Granted (in shares)	87,550
Performance period	3 years

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EQUITY - Narrative (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	Dec. 31, 2017	Mar. 31, 2011
Class of Stock [Line Items]
Proceeds from stock options and employee stock purchase plan	$ 23.7
Number of shares repurchased (in shares)	0
Treasury stock, shares (in shares)	11,004,000		11,004,000
Treasury stock repurchased amount	$ 1,301.2		$ 1,301.2
Accrued dividend RSU	18.0
Paid dividend RSU	$ 10.0	$ 7.3
2011 Buyback
Class of Stock [Line Items]
Stock repurchase program, authorized amount					$ 1,500.0
Treasury stock, shares (in shares)	14,451,325
Treasury stock repurchased amount	$ 1,500.0
2017 Buyback
Class of Stock [Line Items]
Stock repurchase program, authorized amount				$ 2,000.0
Treasury stock activity (in shares)	0

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EQUITY - Distributions (Details) - USD ($) $ / shares in Units, $ in Millions													6 Months Ended
	Jul. 12, 2024	May 23, 2024	Apr. 26, 2024	Mar. 14, 2024	Feb. 01, 2024	Dec. 13, 2023	Jul. 10, 2023	May 24, 2023	Apr. 28, 2023	Mar. 08, 2023	Feb. 02, 2023	Dec. 07, 2022	Jun. 30, 2024	Jun. 30, 2023
Dividends Payable [Line Items]
Aggregate payment amount on common stock													$ 1,559.2	$ 1,461.3
Dividends Declared and Paid | Common Stock
Dividends Payable [Line Items]
Distribution per share (in dollars per share)		$ 1.62		$ 1.62		$ 1.70		$ 1.57		$ 1.56		$ 1.56
Aggregate payment amount on common stock			$ 756.5		$ 792.7		$ 731.8		$ 727.0		$ 726.3
Dividends Declared and Paid | Common Stock | Subsequent Event
Dividends Payable [Line Items]
Aggregate payment amount on common stock	$ 756.7

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NONCONTROLLING INTERESTS - Narrative (Details) € in Millions, ৳ in Millions, $ in Millions	1 Months Ended	3 Months Ended	6 Months Ended			12 Months Ended			48 Months Ended
	Aug. 31, 2022	Jun. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2024 EUR (€)	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2021 BDT (৳)	Aug. 31, 2026	Dec. 31, 2023 USD ($)
Noncontrolling Interest [Line Items]
Noncash distributions to noncontrolling interest holders			$ 49.9		$ 0.0
Stonepeak
Noncontrolling Interest [Line Items]
Dividends declared for preferred stock			23.0
Noncash distributions to noncontrolling interest holders			37.5
Dividends declared for common stock		$ 13.0
Common Stock | Stonepeak
Noncontrolling Interest [Line Items]
Accrued dividends										$ 91.7
Preferred Stock | Stonepeak
Noncontrolling Interest [Line Items]
Accrued dividends		$ 11.5	$ 11.5
U.S. | Data Centers
Noncontrolling Interest [Line Items]
Stock conversion period	4 years
U.S. | Data Centers | Common Stock
Noncontrolling Interest [Line Items]
Percentage of ownership after transaction (as a percent)			72.00%	72.00%
U.S. | Data Centers | Common Stock | Forecast
Noncontrolling Interest [Line Items]
Percentage of ownership after transaction (as a percent)									64.00%
Kirtonkhola Tower Bangladesh Limited
Noncontrolling Interest [Line Items]
Percentage of interests acquired (as a percent)							51.00%	51.00%
Business combination, consideration transferred							$ 10.6	৳ 900
Stonepeak | U.S. | Data Centers
Noncontrolling Interest [Line Items]
Payments to acquire noncontrolling interest						$ 3,100.0
AT Europe Cv
Noncontrolling Interest [Line Items]
Dividends declared			$ 183.2	€ 170.0
AT Rhine CV
Noncontrolling Interest [Line Items]
Dividends declared			48.6	45.0
AT Iberia Cv
Noncontrolling Interest [Line Items]
Noncash distributions to noncontrolling interest holders			12.4
AT Iberia Cv | Dividend One
Noncontrolling Interest [Line Items]
Dividends declared			24.0	22.4
AT Iberia Cv | Dividend Two
Noncontrolling Interest [Line Items]
Dividends declared			$ 74.9	€ 70.0
ATC Europe
Noncontrolling Interest [Line Items]
Noncontrolling ownership interest percentage (as a percent)		52.00%	52.00%
ATC Europe | CDPQ
Noncontrolling Interest [Line Items]
Ownership percentage by noncontrolling owners (as a percent)		30.00%	30.00%
ATC Europe | Allianz
Noncontrolling Interest [Line Items]
Ownership percentage by noncontrolling owners (as a percent)		18.00%	18.00%
France | ATC Europe
Noncontrolling Interest [Line Items]
Noncontrolling ownership interest percentage (as a percent)		100.00%	100.00%
Germany
Noncontrolling Interest [Line Items]
Ownership percentage by noncontrolling owners (as a percent)		13.00%	13.00%
Germany | ATC Europe
Noncontrolling Interest [Line Items]
Noncontrolling ownership interest percentage (as a percent)		87.00%	87.00%
Ownership percentage by noncontrolling owners (as a percent)		87.00%	87.00%
Spain
Noncontrolling Interest [Line Items]
Ownership percentage by noncontrolling owners (as a percent)		17.00%	17.00%
Spain | ATC Europe
Noncontrolling Interest [Line Items]
Noncontrolling ownership interest percentage (as a percent)		83.00%	83.00%
Kirtonkhola Tower Bangladesh Limited | Confidence Group
Noncontrolling Interest [Line Items]
Ownership percentage by noncontrolling owners (as a percent)							49.00%	49.00%
Stonepeak | U.S. | Data Centers
Noncontrolling Interest [Line Items]
Preferred stock, dividend rate (as a percent)			5.00%	5.00%
Preferred stock, conversion ratio		1	1
Stonepeak | U.S. | Data Centers | Common Stock
Noncontrolling Interest [Line Items]
Ownership percentage by noncontrolling owners (as a percent)		28.00%	28.00%
Stonepeak | U.S. | Data Centers | Common Stock | Forecast
Noncontrolling Interest [Line Items]
Ownership percentage by noncontrolling owners (as a percent)									36.00%
Stonepeak | U.S. | Data Centers | Preferred Stock
Noncontrolling Interest [Line Items]
Ownership percentage by noncontrolling owners (as a percent)		100.00%	100.00%

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NONCONTROLLING INTERESTS - Changes in Noncontrolling Interest (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Balance at beginning of period	$ 10,661.7	$ 12,250.3	$ 10,865.4	$ 12,408.5
Net income (loss) attributable to noncontrolling interests	908.4	461.5	1,830.1	776.5
Foreign currency translation adjustment attributable to noncontrolling interests, net of tax	(410.8)	(13.6)	(842.0)	218.5
Contributions from noncontrolling interest holders	13.5	10.5	152.4	10.5
Distributions to noncontrolling interest holders	(41.0)	(20.1)	(144.8)	(31.6)
Balance at end of period	10,423.5	12,007.2	10,423.5	12,007.2
Noncash contributions from noncontrolling interest holders			49.9	0.0
Stonepeak
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Contributions from noncontrolling interest holders			137.3
Noncash contributions from noncontrolling interest holders			37.5
PGGM
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Noncash contributions from noncontrolling interest holders			12.4
Noncontrolling Interests
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Balance at beginning of period	6,613.9	6,843.7	6,667.2	6,836.1
Net income (loss) attributable to noncontrolling interests	8.1	(14.2)	12.4	(35.0)
Foreign currency translation adjustment attributable to noncontrolling interests, net of tax	(27.0)	20.9	(119.7)	60.8
Contributions from noncontrolling interest holders	13.5	10.5	152.4	10.5
Distributions to noncontrolling interest holders	(41.0)	(20.1)	(144.8)	(31.6)
Balance at end of period	$ 6,567.5	$ 6,840.8	$ 6,567.5	$ 6,840.8

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EARNINGS PER COMMON SHARE - Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Earnings Per Share [Abstract]
Net income attributable to American Tower Corporation common stockholders, basic	$ 900.3	$ 475.7	$ 1,817.7	$ 811.5
Net income attributable to American Tower Corporation common stockholders, diluted	$ 900.3	$ 475.7	$ 1,817.7	$ 811.5
Basic weighted average common shares outstanding (in shares)	467,038	466,087	466,778	465,915
Dilutive securities (in shares)	743	892	1,015	1,024
Diluted weighted average common shares outstanding (in shares)	467,781	466,979	467,793	466,939
Basic net income attributable to American Tower Corporation common stockholders per common share (in dollars per share)	$ 1.93	$ 1.02	$ 3.89	$ 1.74
Diluted net income attributable to American Tower Corporation common stockholders per common share (in dollars per share)	$ 1.92	$ 1.02	$ 3.89	$ 1.74

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EARNINGS PER COMMON SHARE - Shares Excluded From Computation Of Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from dilutive effect (in shares)	646	374	287	5

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COMMITMENTS AND CONTINGENCIES (Details) $ in Billions		6 Months Ended
	Mar. 27, 2015 USD ($) renewalPeriod	Jun. 30, 2024 USD ($) communicationsSite renewalPeriod
Verizon Transaction
Loss Contingencies [Line Items]
Leased assets, number of communication sites		11,200
Right to lease, weighted average term	28 years
Aggregate purchase option price for towers | $	$ 5.0
Customer lease, initial term	10 years
Successive terms to renew lease | renewalPeriod	8
Lease renewal term	5 years
AT&T Transaction
Loss Contingencies [Line Items]
Leased assets, number of communication sites		1,800
Aggregate purchase option price for towers | $		$ 1.1
Successive terms to renew lease | renewalPeriod		5
Lease renewal term		5 years
Operating lease, term of contract		27 years
Leased assets, number of communication sites purchased		600

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BUSINESS SEGMENTS (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Segment Reporting Information [Line Items]
Segment revenues	$ 2,900.3	$ 2,771.7	$ 5,734.4	$ 5,538.9
Segment selling, general, administrative and development expense	234.3	244.4	491.3	508.3
OPERATING INCOME	1,284.3	873.7	2,520.9	1,649.3
Stock-based compensation expense	46.3	49.4	111.2	114.9
Other selling, general, administrative and development expense	55.6	54.7	117.7	114.6
Depreciation, amortization and accretion	561.7	764.6	1,111.1	1,558.7
Other expense	254.0	460.7	462.5	995.4
Income from continuing operations before income taxes	1,028.4	474.7	2,059.3	843.1
Total assets	65,837.8	66,879.0	65,837.8	66,879.0	$ 66,027.6
Impairment charges		37.5		67.3
Unrealized gains on equity securities	40.7	(1.8)	26.0	(0.6)
VIL
Segment Reporting Information [Line Items]
Debt and equity securities, realized gain	46.4		46.4
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Mexico Fiber
Segment Reporting Information [Line Items]
Loss on sale				78.9
U.S. & Canada
Segment Reporting Information [Line Items]
Segment revenues	1,362.8	1,346.3	2,703.7	2,686.6
Asia-Pacific
Segment Reporting Information [Line Items]
Segment revenues	360.9	261.7	687.5	512.8
Africa
Segment Reporting Information [Line Items]
Segment revenues	293.9	321.2	585.9	638.2
Europe
Segment Reporting Information [Line Items]
Segment revenues	203.2	198.2	407.7	389.9
Latin America
Segment Reporting Information [Line Items]
Segment revenues	448.7	439.4	894.2	903.5
Data Centers
Segment Reporting Information [Line Items]
Segment revenues	230.8	204.9	455.4	407.9
Operating Segments
Segment Reporting Information [Line Items]
Segment revenues	2,900.3	2,771.7	5,734.4	5,538.9
Segment operating expenses	821.9	827.3	1,610.2	1,633.4
Segment gross margin	2,078.4	1,944.4	4,124.2	3,905.5
Segment selling, general, administrative and development expense	132.4	140.3	262.4	278.8
OPERATING INCOME	1,946.0	1,804.1	3,861.8	3,626.7
Operating Segments | Property
Segment Reporting Information [Line Items]
Segment revenues	2,852.9	2,728.6	5,656.8	5,443.1
Segment operating expenses	799.9	810.1	1,574.3	1,597.1
Segment gross margin	2,053.0	1,918.5	4,082.5	3,846.0
Segment selling, general, administrative and development expense	127.8	135.0	252.9	267.8
OPERATING INCOME	1,925.2	1,783.5	3,829.6	3,578.2
Total assets	65,117.8	66,156.1	65,117.8	66,156.1
Operating Segments | U.S. & Canada
Segment Reporting Information [Line Items]
Segment revenues	1,315.4	1,303.2	2,626.1	2,590.8
Segment operating expenses	220.6	216.9	424.9	422.2
Segment gross margin	1,094.8	1,086.3	2,201.2	2,168.6
Segment selling, general, administrative and development expense	40.2	41.7	76.8	82.5
OPERATING INCOME	1,054.6	1,044.6	2,124.4	2,086.1
Total assets	26,867.3	26,595.2	26,867.3	26,595.2
Operating Segments | Asia-Pacific
Segment Reporting Information [Line Items]
Segment revenues	360.9	261.7	687.5	512.8
Segment operating expenses	174.0	179.6	344.7	348.0
Segment gross margin	186.9	82.1	342.8	164.8
Segment selling, general, administrative and development expense	16.2	17.4	29.0	26.2
OPERATING INCOME	170.7	64.7	313.8	138.6
Total assets	3,702.0	3,941.7	3,702.0	3,941.7
Operating Segments | Africa
Segment Reporting Information [Line Items]
Segment revenues	293.9	321.2	585.9	638.2
Segment operating expenses	96.4	112.8	189.1	231.3
Segment gross margin	197.5	208.4	396.8	406.9
Segment selling, general, administrative and development expense	15.4	18.7	30.3	40.1
OPERATING INCOME	182.1	189.7	366.5	366.8
Total assets	4,019.8	4,180.6	4,019.8	4,180.6
Operating Segments | Europe
Segment Reporting Information [Line Items]
Segment revenues	203.2	198.2	407.7	389.9
Segment operating expenses	73.2	77.3	146.7	150.4
Segment gross margin	130.0	120.9	261.0	239.5
Segment selling, general, administrative and development expense	15.4	15.1	31.2	29.7
OPERATING INCOME	114.6	105.8	229.8	209.8
Total assets	11,568.2	11,659.8	11,568.2	11,659.8
Operating Segments | Latin America
Segment Reporting Information [Line Items]
Segment revenues	448.7	439.4	894.2	903.5
Segment operating expenses	136.4	139.8	276.7	277.7
Segment gross margin	312.3	299.6	617.5	625.8
Segment selling, general, administrative and development expense	21.7	23.5	49.5	53.2
OPERATING INCOME	290.6	276.1	568.0	572.6
Total assets	8,481.1	9,229.1	8,481.1	9,229.1
Operating Segments | Data Centers
Segment Reporting Information [Line Items]
Segment revenues	230.8	204.9	455.4	407.9
Segment operating expenses	99.3	83.7	192.2	167.5
Segment gross margin	131.5	121.2	263.2	240.4
Segment selling, general, administrative and development expense	18.9	18.6	36.1	36.1
OPERATING INCOME	112.6	102.6	227.1	204.3
Total assets	10,479.4	10,549.7	10,479.4	10,549.7
Operating Segments | Services
Segment Reporting Information [Line Items]
Segment revenues	47.4	43.1	77.6	95.8
Segment operating expenses	22.0	17.2	35.9	36.3
Segment gross margin	25.4	25.9	41.7	59.5
Segment selling, general, administrative and development expense	4.6	5.3	9.5	11.0
OPERATING INCOME	20.8	20.6	32.2	48.5
Total assets	73.8	102.9	73.8	102.9
Other
Segment Reporting Information [Line Items]
Stock-based compensation expense	46.3	49.4	111.2	114.9
Other selling, general, administrative and development expense	55.6	54.7	117.7	114.6
Depreciation, amortization and accretion	561.7	764.6	1,111.1	1,558.7
Other expense	254.0	460.7	462.5	995.4
Total assets	$ 646.2	$ 620.0	$ 646.2	$ 620.0