Goodwill and Other Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 3,717,885	$ 3,708,668
Accumulated Amortization	2,536,478	2,502,043
Goodwill, gross carrying amount	2,288,808	2,288,805
Goodwill, accumulated amortization	253,536	253,536
Customer lists and contracts
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	720,053	720,051
Accumulated Amortization	$ 621,381	614,840
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	$ 71,649	71,599
Accumulated Amortization	$ 65,849	65,647
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	$ 2,873,946	2,864,854
Accumulated Amortization	1,808,603	1,781,164
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	52,237	52,164
Accumulated Amortization	$ 40,645	$ 40,392
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