Segment Information - Reconciliation of Property and Equipment Additions from Segments to Consolidated (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Property and equipment additions	$ 29,783	$ 13,585	$ 9,625
Operating Segments | North America
Segment Reporting Information [Line Items]
Property and equipment additions	13,200	5,132	2,485
Operating Segments | International
Segment Reporting Information [Line Items]
Property and equipment additions	5,196	1,680	658
Operating Segments | AWS
Segment Reporting Information [Line Items]
Property and equipment additions	9,190	5,193	4,681
Operating Segments | AWS | Assets held under capital leases
Segment Reporting Information [Line Items]
Property and equipment additions	7,300	4,000	3,700
Operating Segments | AWS | Assets under finance leases
Segment Reporting Information [Line Items]
Property and equipment additions	134	75	81
Operating Segments | North America and International | Assets held under capital leases
Segment Reporting Information [Line Items]
Property and equipment additions	2,900	1,500	938
Operating Segments | North America and International | Assets under finance leases
Segment Reporting Information [Line Items]
Property and equipment additions	2,900	849	219
Corporate
Segment Reporting Information [Line Items]
Property and equipment additions	$ 2,197	$ 1,580	$ 1,801