Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	$ 15,890	$ 14,557	$ 8,658
OPERATING ACTIVITIES:
Net income (loss)	2,371	596	(241)
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	8,116	6,281	4,746
Stock-based compensation	2,975	2,119	1,497
Other operating expense, net	160	155	129
Other expense (income), net	(20)	250	59
Deferred income taxes	(246)	81	(316)
Excess tax benefits from stock-based compensation	(829)	(119)	(6)
Changes in operating assets and liabilities:
Inventories	(1,426)	(2,187)	(1,193)
Accounts receivable, net and other	(3,367)	(1,755)	(1,039)
Accounts payable	5,030	4,294	1,759
Accrued expenses and other	1,724	913	706
Additions to unearned revenue	11,931	7,401	4,433
Amortization of previously unearned revenue	(9,976)	(6,109)	(3,692)
Net cash provided by (used in) operating activities	16,443	11,920	6,842
INVESTING ACTIVITIES:
Purchases of property and equipment, including internal-use software and website development, net	(6,737)	(4,589)	(4,893)
Acquisitions, net of cash acquired, and other	(116)	(795)	(979)
Sales and maturities of marketable securities	4,733	3,025	3,349
Purchases of marketable securities	(7,756)	(4,091)	(2,542)
Net cash provided by (used in) investing activities	(9,876)	(6,450)	(5,065)
FINANCING ACTIVITIES:
Excess tax benefits from stock-based compensation	829	119	6
Proceeds from Issuance of Long-term Debt	621	353	6,359
Repayments of long-term debt and other	(354)	(1,652)	(513)
Principal repayments of capital lease obligations	(3,860)	(2,462)	(1,285)
Principal repayments of finance lease obligations	(147)	(121)	(135)
Net cash provided by (used in) financing activities	(2,911)	(3,763)	4,432
Foreign currency effect on cash and cash equivalents	(212)	(374)	(310)
Net increase (decrease) in cash and cash equivalents	3,444	1,333	5,899
CASH AND CASH EQUIVALENTS, END OF PERIOD	19,334	15,890	14,557
SUPPLEMENTAL CASH FLOW INFORMATION:
Cash paid for interest on long-term debt	290	325	91
Cash paid for interest on capital and finance lease obligations	206	153	86
Cash paid for income taxes, net of refunds	412	273	177
Assets held under capital leases
SUPPLEMENTAL CASH FLOW INFORMATION:
Property and equipment acquired	5,704	4,717	4,008
Assets held under build-to-suit leases
SUPPLEMENTAL CASH FLOW INFORMATION:
Property and equipment acquired	$ 1,209	$ 544	$ 920