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Intangible Assets - Major Classes of Amortizable Intangible Assets (Detail) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Finite-Lived Intangible Assets [Line Items]    
Total $ 10,754.4 $ 4,530.1
Expiration Lists    
Finite-Lived Intangible Assets [Line Items]    
Amortizable intangible assets, gross 15,692.0 8,763.7
Accumulated amortization (5,040.6) (4,312.7)
Total 10,651.4 4,451.0
Non-Compete Agreements    
Finite-Lived Intangible Assets [Line Items]    
Amortizable intangible assets, gross 121.3 117.7
Accumulated amortization (96.0) (85.4)
Total 25.3 32.3
Trade Names    
Finite-Lived Intangible Assets [Line Items]    
Amortizable intangible assets, gross 159.8 120.0
Accumulated amortization (82.1) (73.2)
Total $ 77.7 $ 46.8