Property and Equipment, Net (Property and Equipment) (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property and equipment gross	$ 3,927,171	$ 3,596,114
Less accumulated depreciation and depletion	(1,332,966)	(1,145,465)
Property and equipment net	2,594,205	2,450,649
Landfill [Member]
Property, Plant and Equipment [Line Items]
Property and equipment gross	2,209,749	2,015,085
Rolling Stock [Member]
Property, Plant and Equipment [Line Items]
Property and equipment gross	669,133	602,838
Land, Buildings and Improvements
Property, Plant and Equipment [Line Items]
Property and equipment gross	403,472	386,099
Containers [Member]
Property, Plant and Equipment [Line Items]
Property and equipment gross	289,626	265,432
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment gross	335,376	311,953
Construction in Progress
Property, Plant and Equipment [Line Items]
Property and equipment gross	$ 19,815	$ 14,707