Number Of Annual Renewal Periods

No definition available.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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No definition available.

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- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

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No definition available.

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- Definition

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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No definition available.

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- Definition

Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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LONG-TERM OBLIGATIONS - Schedule of Credit Facilities and Term Loans (Details) € in Millions, $ in Millions	9 Months Ended
	Sep. 30, 2022 USD ($) renewalPeriod	Sep. 30, 2022 EUR (€)	Dec. 31, 2021 USD ($)
2021 EUR Three Year Delayed Draw Term Loan \| Unsecured debt
Line of Credit Facility [Line Items]
Debt instrument term	3 years
2021 USD Two Year Delayed Draw Term Loan \| Unsecured debt
Line of Credit Facility [Line Items]
Debt instrument term	2 years
American Tower Corporation
Line of Credit Facility [Line Items]
Long-term debt	$ 35,963.4		$ 39,943.3
American Tower Corporation \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Number of optional renewal periods \| renewalPeriod	2
American Tower Corporation \| 2021 Multicurrency Credit Facility \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Long-term debt	$ 4,394.3		4,388.4
Outstanding principal balance	4,394.3
Undrawn letters of credit	$ 3.5
Current commitment fee, percentage	0.11%
American Tower Corporation \| 2021 Multicurrency Credit Facility \| Revolving Credit Facility \| Current margin over LIBOR
Line of Credit Facility [Line Items]
Current margin over LIBOR or EURIBOR	1.125%
American Tower Corporation \| 2021 Credit Facility \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Long-term debt	$ 705.0		1,410.0
Outstanding principal balance	705.0
Undrawn letters of credit	$ 24.7
Current commitment fee, percentage	0.11%
American Tower Corporation \| 2021 Credit Facility \| Revolving Credit Facility \| Current margin over LIBOR
Line of Credit Facility [Line Items]
Current margin over LIBOR or EURIBOR	1.125%
American Tower Corporation \| 2021 Term Loan \| Unsecured debt
Line of Credit Facility [Line Items]
Long-term debt	$ 996.0		995.4
Outstanding principal balance	$ 1,000.0
American Tower Corporation \| 2021 Term Loan \| Unsecured debt \| Current margin over LIBOR
Line of Credit Facility [Line Items]
Current margin over LIBOR or EURIBOR	1.125%
American Tower Corporation \| 2021 EUR Three Year Delayed Draw Term Loan \| Unsecured debt
Line of Credit Facility [Line Items]
Long-term debt	$ 808.3	€ 825.0	937.6
Outstanding principal balance	$ 808.7
American Tower Corporation \| 2021 EUR Three Year Delayed Draw Term Loan \| Unsecured debt \| Current margin over LIBOR
Line of Credit Facility [Line Items]
Current margin over LIBOR or EURIBOR	1.125%
American Tower Corporation \| 2021 USD Two Year Delayed Draw Term Loan \| Unsecured debt
Line of Credit Facility [Line Items]
Long-term debt	$ 1,499.1		$ 1,498.4
Outstanding principal balance	$ 1,500.0
American Tower Corporation \| 2021 USD Two Year Delayed Draw Term Loan \| Unsecured debt \| Current margin over LIBOR
Line of Credit Facility [Line Items]
Current margin over LIBOR or EURIBOR	1.125%