The maximum times Adjusted EBITDA for liens covenant as defined in the Senior Notes agreement.

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer).

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LONG-TERM OBLIGATIONS - Offerings of Senior Notes (Details) € in Millions, $ in Millions				6 Months Ended
	May 30, 2025 USD ($)	May 30, 2025 EUR (€)	Mar. 14, 2025 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	May 30, 2025 EUR (€)	Dec. 31, 2024
Debt Instrument [Line Items]
Proceeds from issuance of senior long-term debt				$ 1,560.0	$ 2,374.1
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 \| 4.900% senior notes and 5.350% senior notes
Debt Instrument [Line Items]
Proceeds from issuance of senior long-term debt			$ 988.9
American Tower Corporation \| Senior notes \| 4.900% senior notes
Debt Instrument [Line Items]
Debt interest rate (as a percent)			4.90%	4.90%
Aggregate principal amount			$ 650.0
American Tower Corporation \| Senior notes \| 5.350% senior notes
Debt Instrument [Line Items]
Debt interest rate (as a percent)			5.35%	5.35%
Aggregate principal amount			$ 350.0
American Tower Corporation \| Senior notes \| 2.400% senior notes
Debt Instrument [Line Items]
Debt interest rate (as a percent)			2.40%				2.40%
American Tower Corporation \| Senior notes \| 3.625% senior notes
Debt Instrument [Line Items]
Debt interest rate (as a percent)	3.625%			3.625%		3.625%
Aggregate principal amount	$ 567.4					€ 500.0
Proceeds from issuance of senior long-term debt	$ 563.7	€ 496.8