Property and Equipment

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

Property and Equipment

PROPERTY AND EQUIPMENT

Property and equipment, at cost, consisted of the following (in millions):

	December 31,
	2018		2019
Gross property and equipment (1):
Land and buildings	$	31,741	$	39,223
Equipment	54,591		71,310
Other assets	2,577		3,111
Construction in progress	6,861		6,036
Gross property and equipment	95,770		119,680
Total accumulated depreciation and amortization (1)	33,973		46,975
Total property and equipment, net	$	61,797	$	72,705

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(1) Includes the original cost and accumulated depreciation of fully-depreciated assets.

Depreciation and amortization expense on property and equipment was $8.8 billion, $12.1 billion, and $15.1 billion which includes amortization of property and equipment acquired under finance leases of $5.4 billion, $7.3 billion, and $10.1 billion for 2017, 2018, and 2019.