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Property and Equipment - Depreciation and Amortization Expense Including Amortization Expense for Assets Recorded as Capital Leases (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Property, Plant and Equipment [Line Items]      
Depreciation and amortization expense $ 1,301 $ 1,245 $ 1,292
Tangible Property and Equipment [Member]      
Property, Plant and Equipment [Line Items]      
Depreciation and amortization expense 773 760 834
Landfill Airspace [Member]      
Property, Plant and Equipment [Line Items]      
Depreciation and amortization expense 428 409 380
Property and Equipment [Member]      
Property, Plant and Equipment [Line Items]      
Depreciation and amortization expense $ 1,201 $ 1,169 $ 1,214