Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Property and Equipment

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

	December 31,
	2015		2016
Gross property and equipment (1):
Land and buildings	$	9,770	$	13,998
Equipment and internal-use software (2)	18,417		25,989
Other corporate assets	334		649
Construction in progress	1,532		1,805
Gross property and equipment	30,053		42,441
Total accumulated depreciation (1)	8,215		13,327
Total property and equipment, net	$	21,838	$	29,114

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

(2) Includes internal-use software of $1.4 billion as of December 31, 2015 and 2016.