LONG-TERM OBLIGATIONS - Long-Term Debt Obligations (Details)
€ in Millions, $ in Millions |
Sep. 14, 2026
USD ($)
|
Jun. 18, 2026
EUR (€)
|
May 21, 2026
USD ($)
|
Apr. 14, 2026
USD ($)
|
Feb. 13, 2026
USD ($)
|
Sep. 30, 2026
USD ($)
|
May 27, 2026 |
Dec. 31, 2025
USD ($)
|
| Debt Instrument [Line Items] |
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| Finance lease obligations |
|
|
|
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|
$ 14.2
|
|
$ 15.9
|
| Total |
|
|
|
|
|
37,578.7
|
|
37,220.3
|
| Less current portion of long-term obligations |
|
|
|
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|
(5,363.5)
|
|
(3,387.8)
|
| Long-term obligations |
|
|
|
|
|
32,215.2
|
|
33,832.5
|
| American Tower Corporation |
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| Debt Instrument [Line Items] |
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|
|
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| Long-term debt |
|
|
|
|
|
35,768.3
|
|
35,409.2
|
| American Tower subsidiary |
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|
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| Debt Instrument [Line Items] |
|
|
|
|
|
|
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| Long-term debt |
|
|
|
|
|
1,796.2
|
|
$ 1,795.2
|
| Senior notes | 4.400% senior notes | American Tower Corporation |
|
|
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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|
|
4.40%
|
|
|
4.40%
|
| Long-term debt |
|
|
|
|
|
0.0
|
|
$ 499.9
|
| Aggregate principal amount repaid |
|
|
|
|
$ 500.0
|
|
|
|
| Senior notes | 1.600% senior notes | American Tower Corporation |
|
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|
|
|
|
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
|
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|
1.60%
|
|
|
|
1.60%
|
| Long-term debt |
|
|
|
$ 0.0
|
|
0.0
|
|
$ 699.7
|
| Aggregate principal amount repaid |
|
|
|
$ 700.0
|
|
|
|
|
| Senior notes | 1.950% senior notes | American Tower Corporation |
|
|
|
|
|
|
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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|
1.95%
|
|
|
|
|
1.95%
|
| Long-term debt |
|
|
$ 0.0
|
|
|
0.0
|
|
$ 586.9
|
| Aggregate principal amount repaid |
|
|
$ 500.0
|
|
|
|
|
|
| Senior notes | 1.450% senior notes | American Tower Corporation |
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
1.45%
|
|
|
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|
1.45%
|
| Long-term debt |
$ 0.0
|
|
|
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|
$ 0.0
|
|
$ 598.9
|
| Aggregate principal amount repaid |
$ 600.0
|
|
|
|
|
|
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|
| Senior notes | 3.375% senior notes | American Tower Corporation |
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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|
3.375%
|
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| Long-term debt |
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|
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|
$ 999.9
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|
998.5
|
| Senior notes | 3.125% senior notes | American Tower Corporation |
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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|
3.125%
|
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| Long-term debt |
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|
|
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|
$ 399.9
|
|
399.6
|
| Senior notes | 2.750% senior notes | American Tower Corporation |
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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|
2.75%
|
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| Long-term debt |
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|
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|
$ 749.7
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|
749.0
|
| Senior notes | 0.450% senior notes | American Tower Corporation |
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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|
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|
0.45%
|
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| Long-term debt |
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|
|
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|
$ 849.4
|
|
879.7
|
| Senior notes | 0.400% senior notes | American Tower Corporation |
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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|
0.40%
|
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| Long-term debt |
|
|
|
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|
$ 566.1
|
|
585.8
|
| Senior notes | 3.650% senior notes | American Tower Corporation |
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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|
3.65%
|
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| Long-term debt |
|
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|
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|
$ 649.2
|
|
648.0
|
| Senior notes | 4.125% senior notes | American Tower Corporation |
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
|
4.125%
|
|
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|
4.125%
|
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| Long-term debt |
|
|
|
|
|
$ 396.1
|
|
703.1
|
| Aggregate principal amount repaid | € |
|
€ 250.0
|
|
|
|
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| Senior notes | 3.55% senior notes | American Tower Corporation |
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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3.55%
|
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| Long-term debt |
|
|
|
|
|
$ 749.3
|
|
748.7
|
| Senior notes | 3.600% senior notes | American Tower Corporation |
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|
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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|
3.60%
|
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| Long-term debt |
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|
|
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|
$ 698.7
|
|
697.9
|
| Senior notes | 0.500% senior notes | American Tower Corporation |
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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|
0.50%
|
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| Long-term debt |
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|
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|
$ 848.1
|
|
878.3
|
| Senior notes | 1.500% senior notes | American Tower Corporation |
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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|
1.50%
|
|
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| Long-term debt |
|
|
|
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|
$ 649.0
|
|
648.5
|
| Senior notes | 5.500% senior notes | American Tower Corporation |
|
|
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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5.50%
|
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| Long-term debt |
|
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|
$ 697.6
|
|
696.5
|
| Senior notes | 5.250% senior notes | American Tower Corporation |
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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5.25%
|
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| Long-term debt |
|
|
|
|
|
$ 647.4
|
|
646.4
|
| Senior notes | 5.800% senior notes | American Tower Corporation |
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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|
5.80%
|
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| Long-term debt |
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|
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|
$ 746.9
|
|
745.9
|
| Senior notes | 5.200% senior notes | American Tower Corporation |
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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|
5.20%
|
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| Long-term debt |
|
|
|
|
|
$ 646.2
|
|
645.1
|
| Senior notes | 3.950% senior notes | American Tower Corporation |
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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|
|
|
3.95%
|
|
|
| Long-term debt |
|
|
|
|
|
$ 596.9
|
|
596.0
|
| Senior notes | 0.875% senior notes | American Tower Corporation |
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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|
0.875%
|
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| Long-term debt |
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|
|
|
|
$ 847.7
|
|
878.2
|
| Senior notes | 3.800% senior notes | American Tower Corporation |
|
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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|
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|
3.80%
|
|
|
| Long-term debt |
|
|
|
|
|
$ 1,643.9
|
|
1,642.4
|
| Senior notes | 2.900% senior notes | American Tower Corporation |
|
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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|
2.90%
|
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| Long-term debt |
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|
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|
$ 746.7
|
|
746.0
|
| Senior notes | 5.000% senior notes | American Tower Corporation |
|
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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|
5.00%
|
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| Long-term debt |
|
|
|
|
|
$ 595.4
|
|
594.4
|
| Senior notes | 4.900% senior notes | American Tower Corporation |
|
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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|
|
4.90%
|
|
|
| Long-term debt |
|
|
|
|
|
$ 848.3
|
|
848.0
|
| Senior notes | 3.900% senior notes | American Tower Corporation |
|
|
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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|
|
3.90%
|
|
|
| Long-term debt |
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|
|
|
$ 563.2
|
|
583.3
|
| Senior notes | 2.100% senior notes | American Tower Corporation |
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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|
|
2.10%
|
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|
| Long-term debt |
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|
|
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|
$ 745.9
|
|
745.2
|
| Senior notes | 0.950% senior notes | American Tower Corporation |
|
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
|
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|
|
0.95%
|
|
|
| Long-term debt |
|
|
|
|
|
$ 562.9
|
|
583.1
|
| Senior notes | 1.875% senior notes | American Tower Corporation |
|
|
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
|
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|
|
|
1.875%
|
|
|
| Long-term debt |
|
|
|
|
|
$ 795.9
|
|
795.2
|
| Senior notes | 2.700% senior notes | American Tower Corporation |
|
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
|
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|
|
|
2.70%
|
|
|
| Long-term debt |
|
|
|
|
|
$ 696.8
|
|
696.3
|
| Senior notes | 4.625% senior notes | American Tower Corporation |
|
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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|
4.625%
|
|
|
| Long-term debt |
|
|
|
|
|
$ 562.0
|
|
582.2
|
| Senior notes | 2.300% senior notes | American Tower Corporation |
|
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
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|
|
2.30%
|
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|
| Long-term debt |
|
|
|
|
|
$ 695.2
|
|
694.5
|
| Senior notes | 5.300% senior notes | American Tower Corporation |
|
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|
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
5.30%
|
|
|
|
|
5.30%
|
|
|
| Long-term debt |
|
|
|
|
|
$ 494.7
|
|
0.0
|
| Senior notes | 1.000% senior notes | American Tower Corporation |
|
|
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
|
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|
|
|
1.00%
|
|
|
| Long-term debt |
|
|
|
|
|
$ 732.4
|
|
758.8
|
| Senior notes | 4.050% senior notes | American Tower Corporation |
|
|
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
|
|
|
|
|
4.05%
|
|
|
| Long-term debt |
|
|
|
|
|
$ 645.0
|
|
644.4
|
| Senior notes | 3.625% senior notes | American Tower Corporation |
|
|
|
|
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
|
|
|
|
|
3.625%
|
|
|
| Long-term debt |
|
|
|
|
|
$ 563.6
|
|
583.9
|
| Senior notes | 4.700% senior notes | American Tower Corporation |
|
|
|
|
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| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
|
|
|
|
|
4.70%
|
|
|
| Long-term debt |
|
|
|
|
|
$ 841.2
|
|
840.4
|
| Senior notes | 5.650% senior notes | American Tower Corporation |
|
|
|
|
|
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|
| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
|
|
|
|
|
5.65%
|
|
|
| Long-term debt |
|
|
|
|
|
$ 793.0
|
|
792.3
|
| Senior notes | 1.250% senior notes | American Tower Corporation |
|
|
|
|
|
|
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|
| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
|
|
|
|
|
1.25%
|
|
|
| Long-term debt |
|
|
|
|
|
$ 562.2
|
|
582.4
|
| Senior notes | 5.550% senior notes | American Tower Corporation |
|
|
|
|
|
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|
| Debt Instrument [Line Items] |
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| Debt interest rate (as a percent) |
|
|
|
|
|
5.55%
|
|
|
| Long-term debt |
|
|
|
|
|
$ 842.9
|
|
842.2
|
| Senior notes | 4.000% senior notes | American Tower Corporation |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
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| Debt interest rate (as a percent) |
|
|
|
|
|
4.00%
|
4.00%
|
|
| Long-term debt |
|
|
|
|
|
$ 841.6
|
|
0.0
|
| Senior notes | 5.560% senior notes | American Tower Corporation |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
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|
| Debt interest rate (as a percent) |
5.56%
|
|
|
|
|
5.56%
|
|
|
| Long-term debt |
|
|
|
|
|
$ 494.9
|
|
0.0
|
| Senior notes | 5.900% senior notes | American Tower Corporation |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
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|
| Debt interest rate (as a percent) |
|
|
|
|
|
5.90%
|
|
|
| Long-term debt |
|
|
|
|
|
$ 743.4
|
|
742.9
|
| Senior notes | 5.450% senior notes | American Tower Corporation |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
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|
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|
| Debt interest rate (as a percent) |
|
|
|
|
|
5.45%
|
|
|
| Long-term debt |
|
|
|
|
|
$ 642.1
|
|
641.5
|
| Senior notes | 4.100% senior notes | American Tower Corporation |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
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|
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|
|
| Debt interest rate (as a percent) |
|
|
|
|
|
4.10%
|
|
|
| Long-term debt |
|
|
|
|
|
$ 560.5
|
|
580.8
|
| Senior notes | 5.400% senior notes | American Tower Corporation |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
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|
|
|
| Debt interest rate (as a percent) |
|
|
|
|
|
5.40%
|
|
|
| Long-term debt |
|
|
|
|
|
$ 593.1
|
|
592.5
|
| Senior notes | 5.350% senior notes | American Tower Corporation |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Debt interest rate (as a percent) |
|
|
|
|
|
5.35%
|
|
|
| Long-term debt |
|
|
|
|
|
$ 731.0
|
|
731.4
|
| Senior notes | 5.750% senior notes | American Tower Corporation |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Debt interest rate (as a percent) |
5.75%
|
|
|
|
|
5.75%
|
|
|
| Long-term debt |
|
|
|
|
|
$ 592.0
|
|
0.0
|
| Senior notes | 3.700% senior notes | American Tower Corporation |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Debt interest rate (as a percent) |
|
|
|
|
|
3.70%
|
|
|
| Long-term debt |
|
|
|
|
|
$ 592.9
|
|
592.8
|
| Senior notes | 3.100% senior notes | American Tower Corporation |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Debt interest rate (as a percent) |
|
|
|
|
|
3.10%
|
|
|
| Long-term debt |
|
|
|
|
|
$ 1,039.4
|
|
1,039.1
|
| Senior notes | 2.950% senior notes | American Tower Corporation |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Debt interest rate (as a percent) |
|
|
|
|
|
2.95%
|
|
|
| Long-term debt |
|
|
|
|
|
$ 1,025.0
|
|
1,024.5
|
| Secured debt | Series 2018-1A securities | American Tower subsidiary |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Long-term debt |
|
|
|
|
|
498.9
|
|
498.3
|
| Secured debt | Series 2023-1A Securities | American Tower subsidiary |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Long-term debt |
|
|
|
|
|
1,294.5
|
|
1,291.7
|
| Unsecured debt | 2021 Term Loan | American Tower Corporation |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Long-term debt |
|
|
|
|
|
998.1
|
|
998.1
|
| Unsecured debt | Other subsidiary debt | American Tower subsidiary |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Long-term debt |
|
|
|
|
|
2.8
|
|
5.2
|
| Revolving Credit Facility | 2021 Multicurrency Credit Facility | American Tower Corporation |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Long-term debt |
|
|
|
|
|
1,015.0
|
|
380.0
|
| Revolving Credit Facility | 2021 Credit Facility | American Tower Corporation |
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
| Long-term debt |
|
|
|
|
|
$ 230.0
|
|
$ 0.0
|