Intangible Assets, Net (Intangible Assets Exclusive of Goodwill) (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	$ 1,262,757	$ 1,204,960
Intangible assets, exclusive of goodwill, gross	1,523,486	1,465,689
Indefinite-lived intangible assets, gross carrying amount	260,729	260,729
Finite-lived intangible assets, accumulated amortization	(415,915)	(339,746)
Intangible assets, accumulated impairment loss	(38,507)	(38,507)
Finite-lived intangible assets, net carrying amount	846,842	865,214
Intangible assets, net, exclusive of goodwill	1,069,064	1,087,436
Indefinite-lived intangible assets	222,222	222,222
Solid Waste Collection and Transportation Permits [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, gross carrying amount	158,591	158,591
Intangible assets, accumulated impairment loss
Indefinite-lived intangible assets	158,591	158,591
Material Recycling Facility Permits [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, gross carrying amount	42,283	42,283
Intangible assets, accumulated impairment loss
Indefinite-lived intangible assets	42,283	42,283
Exploration and Production Facility Permits [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, gross carrying amount	59,855	59,855
Intangible assets, accumulated impairment loss	(38,507)	(38,507)
Indefinite-lived intangible assets	21,348	21,348
Long-term Franchise Agreements and Contracts [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	483,749	481,293
Finite-lived intangible assets, accumulated amortization	(150,691)	(123,591)
Finite-lived intangible assets, net carrying amount	333,058	357,702
Customer Lists [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	429,801	405,683
Finite-lived intangible assets, accumulated amortization	(219,104)	(180,440)
Finite-lived intangible assets, net carrying amount	210,697	225,243
Permits and Other [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	349,207	317,984
Finite-lived intangible assets, accumulated amortization	(46,120)	(35,715)
Finite-lived intangible assets, net carrying amount	$ 303,087	$ 282,269

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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-Section 50
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

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Indefinite lived intangible assets gross excluding goodwill.

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Sum of the gross carrying amounts before accumulated amortization as of the balance sheet date of all intangible assets, excluding goodwill.

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