Property and Equipment

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Property and Equipment

5.    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, 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