Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	$ 5,074	$ 4,481	$ 8,658	$ 8,084	$ 3,704	$ 2,335
OPERATING ACTIVITIES:
Net income (loss)	(126)	(7)	(18)	75	181	(101)
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	1,109	756	2,119	1,457	3,916	2,673
Stock-based compensation	391	298	711	526	1,318	978
Other operating expense (income), net	28	32	62	63	113	139
Losses (gains) on sales of marketable securities, net	(1)	0	(1)	0	1	(6)
Other expense (income), net	(8)	42	(57)	110	(1)	367
Deferred income taxes	(49)	21	(234)	(58)	(332)	(243)
Excess tax benefits from stock-based compensation	0	0	(121)	0	(199)	(304)
Changes in operating assets and liabilities:
Inventories	92	(30)	791	505	(1,124)	(1,116)
Accounts receivable, net and other	(299)	(211)	428	518	(936)	(922)
Accounts payable	(344)	0	(5,018)	(4,187)	1,056	1,962
Accrued expenses and other	(15)	(77)	(746)	(780)	770	728
Additions to unearned revenue	894	516	1,986	1,200	3,477	2,217
Amortization of previously unearned revenue	(810)	(460)	(1,542)	(921)	(2,913)	(1,840)
Net cash provided by (used in) operating activities	862	880	(1,640)	(1,492)	5,327	4,532
INVESTING ACTIVITIES:
Purchases of property and equipment, including internal-use software and website development	(1,290)	(855)	(2,370)	(1,526)	(4,288)	(4,267)
Acquisitions, net of cash acquired, and other	(67)	(148)	(66)	(251)	(127)	(323)
Sales and maturities of marketable securities and other investments	962	696	1,555	1,296	2,565	2,544
Purchases of marketable securities and other investments	(336)	(1,113)	(773)	(1,888)	(1,710)	(3,774)
Net cash provided by (used in) investing activities	(731)	(1,420)	(1,654)	(2,369)	(3,560)	(5,820)
FINANCING ACTIVITIES:
Excess tax benefits from stock-based compensation	0	0	121	0	199	304
Proceeds from long-term debt and other	286	81	351	107	627	3,274
Repayments of long-term debt, capital lease, and finance lease obligations	(475)	(290)	(836)	(473)	(1,363)	(748)
Net cash provided by (used in) financing activities	(189)	(209)	(364)	(366)	(537)	2,830
Foreign-currency effect on cash and cash equivalents	41	(28)	57	(153)	123	(173)
Net increase (decrease) in cash and cash equivalents	(17)	(777)	(3,601)	(4,380)	1,353	1,369
CASH AND CASH EQUIVALENTS, END OF PERIOD	5,057	3,704	5,057	3,704	5,057	3,704
SUPPLEMENTAL CASH FLOW INFORMATION:
Cash paid for interest on long-term debt	31	39	49	52	94	68
Cash paid for income taxes (net of refunds)	71	34	109	120	158	193
Assets Held under Capital Leases
SUPPLEMENTAL CASH FLOW INFORMATION:
Property and equipment acquired	920	447	1,636	787	2,716	1,233
Assets Held under Build-To-Suit Leases
SUPPLEMENTAL CASH FLOW INFORMATION:
Property and equipment acquired	$ 237	$ 244	$ 363	$ 394	$ 846	$ 392