Debt Instrument, Repaid, Principal Amount

No definition available.

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- Definition

Disposal Group, Including Discontinued Operation, Ownership Percentage In Disposed Asset

+ References

No definition available.

+ Details

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- Definition

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

+ References

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- Definition

Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

+ References

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Period Type:	instant

- Definition

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

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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- Details

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- Details

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- Details

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- Details

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- Details

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SUBSEQUENT EVENTS (Details) $ in Millions, $ in Millions	Oct. 14, 2026 USD ($)	Dec. 31, 2026 USD ($)	Dec. 31, 2026 CAD ($)	Sep. 30, 2026 USD ($)	Dec. 31, 2025 USD ($)
Subsequent Event \| Forecast \| Disposal Group, Disposed of by Sale, Not Discontinued Operations \| ATC Canada
Subsequent Event [Line Items]
Percentage of ownership interest sold		100.00%	100.00%
Total consideration received upon disposal		$ 202.0	$ 288
American Tower Corporation
Subsequent Event [Line Items]
Long-term debt				$ 35,768.3	$ 35,409.2
American Tower Corporation \| 3.375% senior notes \| Senior notes
Subsequent Event [Line Items]
Stated interest rate (as a percent)				3.375%
Long-term debt				$ 999.9	$ 998.5
American Tower Corporation \| 3.375% senior notes \| Senior notes \| Subsequent Event
Subsequent Event [Line Items]
Stated interest rate (as a percent)	3.375%
Aggregate principal amount repaid	$ 1,000.0
Long-term debt	$ 0.0