Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	$ 14,557	$ 8,658	$ 8,084
OPERATING ACTIVITIES:
Net income (loss)	596	(241)	274
Adjustments to reconcile net income (loss) to net cash from operating activities:
Depreciation of property and equipment, including internal-use software and website development, and other amortization, including capitalized content costs	6,281	4,746	3,253
Stock-based compensation	2,119	1,497	1,134
Other operating expense (income), net	155	129	114
Losses (gains) on sales of marketable securities, net	5	(3)	1
Other expense (income), net	245	62	166
Deferred income taxes	81	(316)	(156)
Excess tax benefits from stock-based compensation	(119)	(6)	(78)
Changes in operating assets and liabilities:
Inventories	(2,187)	(1,193)	(1,410)
Accounts receivable, net and other	(1,755)	(1,039)	(846)
Accounts payable	4,294	1,759	1,888
Accrued expenses and other	913	706	736
Additions to unearned revenue	7,401	4,433	2,691
Amortization of previously unearned revenue	(6,109)	(3,692)	(2,292)
Net cash provided by (used in) operating activities	11,920	6,842	5,475
INVESTING ACTIVITIES:
Purchases of property and equipment, including internal-use software and website development, net	(4,589)	(4,893)	(3,444)
Acquisitions, net of cash acquired, and other	(795)	(979)	(312)
Sales and maturities of marketable securities	3,025	3,349	2,306
Purchases of marketable securities	4,091	2,542	2,826
Net cash provided by (used in) investing activities	(6,450)	(5,065)	(4,276)
FINANCING ACTIVITIES:
Excess tax benefits from stock-based compensation	119	6	78
Proceeds from long-term debt and other	353	6,359	394
Repayments of long-term debt and other	(1,652)	(513)	(231)
Principal repayments of capital lease obligations	(2,462)	(1,285)	(775)
Principal repayments of finance lease obligations	(121)	(135)	(5)
Net cash provided by (used in) financing activities	(3,763)	4,432	(539)
Foreign-currency effect on cash and cash equivalents	(374)	(310)	(86)
Net increase (decrease) in cash and cash equivalents	1,333	5,899	574
CASH AND CASH EQUIVALENTS, END OF PERIOD	15,890	14,557	8,658
SUPPLEMENTAL CASH FLOW INFORMATION:
Cash paid for interest on long-term debt	325	91	97
Cash paid for interest on capital and finance lease obligations	153	86	41
Cash paid for income taxes (net of refunds)	273	177	169
Assets held under capital leases
SUPPLEMENTAL CASH FLOW INFORMATION:
Property and equipment acquired	4,717	4,008	1,867
Assets held under build-to-suit leases
SUPPLEMENTAL CASH FLOW INFORMATION:
Property and equipment acquired	$ 544	$ 920	$ 877