Goodwill and Other Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 3,708,668	$ 3,416,914
Accumulated Amortization	2,502,043	2,371,737
Goodwill gross carrying amount	2,288,805	2,189,962	$ 2,165,864
Goodwill accumulated amortization	$ 253,536	253,536
Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated Life (Years)	2 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated Life (Years)	15 years
Customer lists and contracts
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 720,051	676,846
Accumulated Amortization	$ 614,840	587,056
Customer lists and contracts | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated Life (Years)	7 years
Customer lists and contracts | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated Life (Years)	10 years
Non-competition agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 71,599	69,276
Accumulated Amortization	$ 65,647	64,941
Non-competition agreements | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated Life (Years)	3 years
Non-competition agreements | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated Life (Years)	15 years
Site locations
Finite-Lived Intangible Assets [Line Items]
Estimated Life (Years)	15 years
Gross Carrying Amount	$ 2,864,854	2,619,531
Accumulated Amortization	1,781,164	1,680,333
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	52,164	51,261
Accumulated Amortization	$ 40,392	$ 39,407
Other | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated Life (Years)	2 years
Other | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated Life (Years)	15 years