Stockholders' Equity - Stock-based Compensation Expense (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expense	$ 6,038	$ 6,534	$ 10,070	$ 10,223
Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServicesSold
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expense	208	250	379	398
Income Statement Location [Axis]: us-gaap:GeneralAndAdministrativeExpense
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expense	520	542	831	873
Income Statement Location [Axis]: us-gaap:MarketingExpense
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expense	845	1,207	1,508	1,860
Income Statement Location [Axis]: amzn:FulfillmentExpense
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expense	764	880	1,365	1,377
Income Statement Location [Axis]: amzn:TechnologyAndInfrastructureExpense
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expense	$ 3,701	$ 3,655	$ 5,987	$ 5,715