Segment Information - Reconciliation of Property and Equipment Additions from Segments to Consolidated (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Property and equipment additions	$ 25,068	$ 29,783	$ 13,585
Operating Segments | North America
Segment Reporting Information [Line Items]
Property and equipment additions	10,749	13,200	5,132
Operating Segments | International
Segment Reporting Information [Line Items]
Property and equipment additions	2,476	5,196	1,680
Operating Segments | AWS
Segment Reporting Information [Line Items]
Property and equipment additions	9,783	9,190	5,193
Operating Segments | AWS | Assets held under capital leases
Segment Reporting Information [Line Items]
Property and equipment additions	8,400	7,300	4,000
Operating Segments | AWS | Assets under finance leases
Segment Reporting Information [Line Items]
Property and equipment additions	245	134	75
Operating Segments | North America and International | Assets held under capital leases
Segment Reporting Information [Line Items]
Property and equipment additions	2,000	2,900	1,500
Operating Segments | North America and International | Assets under finance leases
Segment Reporting Information [Line Items]
Property and equipment additions	3,000	2,900	849
Corporate
Segment Reporting Information [Line Items]
Property and equipment additions	$ 2,060	$ 2,197	$ 1,580