Segment Information - Reconciliation of Assets from Segment to Consolidated (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 225,248	$ 162,648	$ 131,310
Operating Segments | North America
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	72,277	47,251	35,844
Operating Segments | International
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	30,709	19,923	18,014
Operating Segments | AWS
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	36,500	26,340	18,660
Corporate
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 85,762	$ 69,134	$ 58,792