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Intangible Assets - Major Classes of Amortizable Intangible Assets (Detail) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]    
Amortizable intangible assets, net $ 3,720.4 $ 3,372.1
Expiration Lists [Member]    
Finite-Lived Intangible Assets [Line Items]    
Amortizable intangible assets, gross 7,097.8 6,472.3
Accumulated amortization (3,458.7) (3,178.5)
Amortizable intangible assets, net 3,639.1 3,293.8
Non-Compete Agreements [Member]    
Finite-Lived Intangible Assets [Line Items]    
Amortizable intangible assets, gross 100.2 91.3
Accumulated amortization (72.1) (67.5)
Amortizable intangible assets, net 28.1 23.8
Trade Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Amortizable intangible assets, gross 113.1 108.5
Accumulated amortization (59.9) (54.0)
Amortizable intangible assets, net $ 53.2 $ 54.5