v3.25.2
GOODWILL AND OTHER INTANGIBLE ASSETS - Other Intangible Assets Subject to Amortization (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value $ 25,533.4 $ 24,438.2
Accumulated Amortization (10,570.3) (9,963.9)
Net Book Value 14,963.1 14,474.3
Acquired network location intangibles    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value 5,551.6 5,365.4
Accumulated Amortization (2,758.5) (2,659.8)
Net Book Value $ 2,793.1 2,705.6
Acquired network location intangibles | Maximum    
Finite-Lived Intangible Assets [Line Items]    
Estimated Useful Lives (years) 30 years  
Acquired tenant-related intangibles    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value $ 18,597.4 17,666.0
Accumulated Amortization (7,288.0) (6,823.7)
Net Book Value $ 11,309.4 10,842.3
Acquired tenant-related intangibles | Maximum    
Finite-Lived Intangible Assets [Line Items]    
Estimated Useful Lives (years) 30 years  
Acquired licenses and other intangibles    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value $ 1,384.4 1,406.8
Accumulated Amortization (523.8) (480.4)
Net Book Value $ 860.6 $ 926.4
Acquired licenses and other intangibles | Minimum    
Finite-Lived Intangible Assets [Line Items]    
Estimated Useful Lives (years) 2 years  
Acquired licenses and other intangibles | Maximum    
Finite-Lived Intangible Assets [Line Items]    
Estimated Useful Lives (years) 30 years