Segment Information - Depreciation Expense, by Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reconciliation Of Depreciation By Segment [Line Items]
Depreciation expense	$ 6,362	$ 4,949	$ 3,616
North America Segment
Reconciliation Of Depreciation By Segment [Line Items]
Depreciation expense	1,971	1,551	1,203
International Segment
Reconciliation Of Depreciation By Segment [Line Items]
Depreciation expense	930	822	740
Amazon Web Services Segment
Reconciliation Of Depreciation By Segment [Line Items]
Depreciation expense	$ 3,461	$ 2,576	$ 1,673