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Intangible Assets - Major Classes of Amortizable Intangible Assets (Detail) - USD ($)
$ in Millions
Sep. 30, 2024
Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]    
Amortizable intangible assets, net $ 4,353.2 $ 4,633.3
Expiration Lists [Member]    
Finite-Lived Intangible Assets [Line Items]    
Amortizable intangible assets, gross 8,532.3 8,222.8
Accumulated amortization (4,249.2) (3,733.2)
Amortizable intangible assets, net 4,283.1 4,489.6
Non-Compete Agreements [Member]    
Finite-Lived Intangible Assets [Line Items]    
Amortizable intangible assets, gross 105.9 112.2
Accumulated amortization (84.1) (74.9)
Amortizable intangible assets, net 21.8 37.3
Trade Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Amortizable intangible assets, gross 121.6 171.8
Accumulated amortization (73.3) (65.4)
Amortizable intangible assets, net $ 48.3 $ 106.4