Other Long-Term Liabilities - Long Term Finance Lease Obligation (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Other Liabilities Disclosure [Abstract]
Gross financing lease obligations	$ 783
Less imputed interest	(200)
Present value of net minimum lease payments	583
Less current portion of financing lease obligations	(28)
Total long-term financing lease obligations	$ 555

Finance Leases, Future Minimum Payments, Present Value of Net Minimum Payments

No definition available.

Name:	amzn_FinanceLeasesFutureMinimumPaymentsPresentValueofNetMinimumPayments
Namespace Prefix:	amzn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant