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Intangible Assets - Major Classes of Amortizable Intangible Assets (Detail) - USD ($) $ in Millions | Jun. 30, 2023 | Dec. 31, 2022
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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

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