Segment Information - Depreciation Expense, by Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Depreciation expense	$ 8,831	$ 6,362	$ 4,949
North America
Segment Reporting Information [Line Items]
Depreciation expense	3,029	1,971	1,551
International
Segment Reporting Information [Line Items]
Depreciation expense	1,278	930	822
AWS
Segment Reporting Information [Line Items]
Depreciation expense	$ 4,524	$ 3,461	$ 2,576