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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Statement of Comprehensive Income [Abstract]    
Net income $ 921.7 $ 315.0
Other comprehensive (loss) income:    
Foreign currency translation adjustments, net of tax benefit of $(0.2) and $(0.0), respectively (431.2) 232.1
Other comprehensive (loss) income (431.2) 232.1
Comprehensive income 490.5 547.1
Comprehensive loss (income) attributable to noncontrolling interests 88.4 (19.1)
Comprehensive income attributable to American Tower Corporation stockholders $ 578.9 $ 528.0