Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and equipment as of December 31 consisted of the following (in millions):

	2017		2016
Land	$	624	$	608
Landfills		14,904		14,276
Vehicles		4,750		4,433
Machinery and equipment		2,824		2,639
Containers		2,571		2,469
Buildings and improvements		2,846		2,667
Furniture, fixtures and office equipment		744		1,010
		29,263		28,102
Less: Accumulated depreciation of tangible property and equipment		(8,916)		(8,812)
Less: Accumulated amortization of landfill airspace		(8,788)		(8,340)
Property and equipment, net	$	11,559	$	10,950

Depreciation and Amortization Expense Including Amortization Expense for Assets Recorded as Capital Leases

Depreciation and amortization expense, including amortization expense for assets recorded as capital leases, consisted of the following for the years ended December 31 (in millions):

	2017		2016		2015
Depreciation of tangible property and equipment	$	783	$	773	$	760
Amortization of landfill airspace		497		428		409
Depreciation and amortization expense	$	1,280	$	1,201	$	1,169