Segment Information - Depreciation Expense, by Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reconciliation Of Depreciation By Segment [Line Items]
Depreciation expense	$ 4,949	$ 3,616	$ 2,460
North America Segment
Reconciliation Of Depreciation By Segment [Line Items]
Depreciation expense	1,551	1,203	914
International Segment
Reconciliation Of Depreciation By Segment [Line Items]
Depreciation expense	822	740	583
Amazon Web Services Segment
Reconciliation Of Depreciation By Segment [Line Items]
Depreciation expense	$ 2,576	$ 1,673	$ 963