Intangible Assets, Net (Intangible Assets Exclusive of Goodwill) (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	$ 439,034	$ 398,508
Intangible assets, exclusive of goodwill, gross	693,933	652,151
Finite-lived intangible assets, accumulated amortization	(149,155)	(142,156)
Finite-lived intangible assets, net carrying amount	289,879us-gaap_FiniteLivedIntangibleAssetsNet	256,352us-gaap_FiniteLivedIntangibleAssetsNet
Intangible assets, net, exclusive of goodwill	544,778	509,995
Indefinite-lived intangible assets, gross carrying amount	254,899	253,643
Indefinite-lived intangible assets	254,899	253,643
Solid Waste Collection and Transportation Permits [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, gross carrying amount	152,761	151,505
Indefinite-lived intangible assets	152,761	151,505
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
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
Indefinite-lived intangible assets	59,855	59,855
Long-term Franchise Agreements and Contracts [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	197,096	195,676
Finite-lived intangible assets, accumulated amortization	(54,447)	(52,448)
Finite-lived intangible assets, net carrying amount	142,649	143,228
Customer Lists [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	163,498	161,463
Finite-lived intangible assets, accumulated amortization	(82,650)	(77,931)
Finite-lived intangible assets, net carrying amount	80,848	83,532
Permits and Non-Competition Agreements [Member]
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	78,440	41,369
Finite-lived intangible assets, accumulated amortization	(12,058)	(11,777)
Finite-lived intangible assets, net carrying amount	$ 66,382	$ 29,592

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

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

-Topic 350

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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

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-Topic 350

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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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