Intangible Assets, Net (Intangible Assets Exclusive of Goodwill) (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	$ 1,615,661	$ 1,505,029
Finite-lived intangible assets, accumulated amortization	(696,269)	(564,188)
Intangible assets, accumulated impairment	(38,507)	(38,507)
Finite-lived intangible assets, net carrying amount	919,392	940,841
Intangible assets, net, exclusive of goodwill	1,155,079	1,163,063
Intangible assets, exclusive of goodwill	1,889,855	1,765,758
Indefinite-lived intangible assets, gross carrying amount	274,194	260,729
Indefinite-lived intangible assets	235,687	222,222
Solid Waste Collection and Transportation Permits
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, gross carrying amount	172,056	158,591
Indefinite-lived intangible assets	172,056	158,591
Material Recycling Facility Permits
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, gross carrying amount	42,283	42,283
Indefinite-lived intangible assets	42,283	42,283
Exploration and Production Facility Permits
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Intangible assets, accumulated impairment	(38,507)	(38,507)
Indefinite-lived intangible assets, gross carrying amount	59,855	59,855
Indefinite-lived intangible assets	21,348	21,348
Long-term Franchise Agreements and Contracts
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	600,674	550,340
Finite-lived intangible assets, accumulated amortization	(234,972)	(192,462)
Finite-lived intangible assets, net carrying amount	365,702	357,878
Customer Lists [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	636,035	587,562
Finite-lived intangible assets, accumulated amortization	(382,020)	(308,427)
Finite-lived intangible assets, net carrying amount	254,015	279,135
Permits and Other [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	378,952	367,127
Finite-lived intangible assets, accumulated amortization	(79,277)	(63,299)
Finite-lived intangible assets, net carrying amount	$ 299,675	$ 303,828