Description of Business, Accounting Policies, and Supplemental Disclosures - Foreign Currency (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accounting Policies [Abstract]
Transaction gain (loss) arising from intercompany foreign currency transactions	$ 19	$ (118)	$ (95)

Foreign Currency Transaction Gain (Loss) On Intercompany Balances

No definition available.

Name:	amzn_ForeignCurrencyTransactionGainLossOnIntercompanyBalances
Namespace Prefix:	amzn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration