Segment Information - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Disaggregation of Revenue [Line Items]
Total net sales	$ 180,169	$ 158,877	$ 503,538	$ 450,167
Online stores
Disaggregation of Revenue [Line Items]
Total net sales	67,407	61,411	186,299	171,473
Physical stores
Disaggregation of Revenue [Line Items]
Total net sales	5,578	5,228	16,706	15,636
Third-party seller services
Disaggregation of Revenue [Line Items]
Total net sales	42,486	37,864	119,346	108,661
Advertising services
Disaggregation of Revenue [Line Items]
Total net sales	17,703	14,331	47,318	38,926
Subscription services
Disaggregation of Revenue [Line Items]
Total net sales	12,574	11,278	36,497	32,866
AWS
Disaggregation of Revenue [Line Items]
Total net sales	33,006	27,452	93,146	78,770
Other
Disaggregation of Revenue [Line Items]
Total net sales	$ 1,415	$ 1,313	$ 4,226	$ 3,835