Segment Information - Disaggregation of Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Net sales	$ 469,822	$ 386,064	$ 280,522
Online stores
Disaggregation of Revenue [Line Items]
Net sales	222,075	197,346	141,247
Physical stores
Disaggregation of Revenue [Line Items]
Net sales	17,075	16,227	17,192
Third-party seller services
Disaggregation of Revenue [Line Items]
Net sales	103,366	80,461	53,762
Subscription services
Disaggregation of Revenue [Line Items]
Net sales	31,768	25,207	19,210
Advertising services
Disaggregation of Revenue [Line Items]
Net sales	31,160	19,773	12,625
AWS
Disaggregation of Revenue [Line Items]
Net sales	62,202	45,370	35,026
Other
Disaggregation of Revenue [Line Items]
Net sales	$ 2,176	$ 1,680	$ 1,460