Consolidated Statements Of Cash Flows - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	$ 12,470	$ 10,237	$ 15,890	$ 14,557	$ 10,269	$ 5,057
OPERATING ACTIVITIES:
Net income (loss)	857	92	1,370	35	1,931	(188)
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	1,909	1,504	3,736	2,930	7,087	5,557
Stock-based compensation	768	563	1,312	969	2,461	1,755
Other operating expense (income), net	53	42	97	87	166	153
Losses (gains) on sales of marketable securities, net	1	1	3	2	6	(1)
Other expense (income), net	31	18	(21)	109	115	229
Deferred income taxes	106	(43)	117	(45)	243	(130)
Excess tax benefits from stock-based compensation	(113)	(95)	(320)	(117)	(323)	(1)
Changes in operating assets and liabilities:
Inventories	(57)	(27)	712	693	(2,167)	(1,291)
Accounts receivable, net and other	(1,184)	(430)	(772)	11	(2,538)	(1,456)
Accounts payable	977	373	(4,793)	(3,876)	3,377	2,901
Accrued expenses and other	(15)	(129)	(972)	(1,068)	1,007	387
Additions to unearned revenue	2,340	1,397	5,154	3,200	9,355	5,647
Amortization of previously unearned revenue	(2,208)	(1,269)	(4,318)	(2,432)	(7,994)	(4,582)
Net cash provided by (used in) operating activities	3,465	1,997	1,305	498	12,726	8,980
INVESTING ACTIVITIES:
Purchases of property and equipment, including internal-use software and website development, net	(1,711)	(1,213)	(2,890)	(2,084)	(5,395)	(4,607)
Acquisitions, net of cash acquired, and other	(14)	(8)	(30)	(374)	(452)	(1,287)
Sales and maturities of marketable securities	931	470	2,069	845	4,249	2,639
Purchases of marketable securities	(1,645)	(625)	(2,281)	(1,610)	(4,762)	(3,379)
Net cash provided by (used in) investing activities	(2,439)	(1,376)	(3,132)	(3,223)	(6,360)	(6,634)
FINANCING ACTIVITIES:
Excess tax benefits from stock-based compensation	113	95	320	117	323	1
Proceeds from long-term debt and other	66	44	75	226	202	6,236
Repayments of long-term debt and other	(70)	(215)	(245)	(531)	(1,366)	(797)
Principal repayments of capital lease obligations	(1,116)	(580)	(1,917)	(1,082)	(3,298)	(1,832)
Principal repayments of finance lease obligations	(32)	(35)	(61)	(74)	(108)	(155)
Net cash provided by (used in) financing activities	(1,039)	(691)	(1,828)	(1,344)	(4,247)	3,453
Foreign currency effect on cash and cash equivalents	64	102	286	(219)	133	(587)
Net increase (decrease) in cash and cash equivalents	51	32	(3,369)	(4,288)	2,252	5,212
CASH AND CASH EQUIVALENTS, END OF PERIOD	12,521	10,269	12,521	10,269	12,521	10,269
SUPPLEMENTAL CASH FLOW INFORMATION:
Cash paid for interest on long-term debt	143	152	145	169	301	212
Cash paid for interest on capital and finance lease obligations	48	35	95	67	180	119
Cash paid for income taxes (net of refunds)	88	65	226	119	380	188
Assets Held under Capital Leases
SUPPLEMENTAL CASH FLOW INFORMATION:
Property and equipment acquired	1,422	1,384	2,297	2,338	4,676	4,710
Assets Held under Build-To-Suit Leases
SUPPLEMENTAL CASH FLOW INFORMATION:
Property and equipment acquired	$ 231	$ 153	$ 582	$ 256	$ 870	$ 813