CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	$ 2,288	$ 2,641	$ 5,269	$ 3,777	$ 2,047	$ 1,629
OPERATING ACTIVITIES:
Net income	7	191	137	391	377	1,038
Adjustments to reconcile net income to net cash from operating activities:
Depreciation of fixed assets, including internal-use software and website development, and other amortization	485	244	942	446	1,579	766
Stock-based compensation	221	144	381	254	684	481
Other operating expense (income), net	32	41	79	74	158	129
Losses (gains) on sales of marketable securities, net	(2)	1	(4)	3	(10)	2
Other expense (income), net	(19)	(39)	(4)	(2)	(58)	(53)
Deferred income taxes	(43)	20	(81)	35	20	67
Excess tax benefits from stock-based compensation	(85)	(15)	(125)	(61)	(126)	(159)
Changes in operating assets and liabilities:
Inventories	(124)	(274)	622	69	(1,224)	(1,130)
Accounts receivable, net and other	(166)	(73)	580	286	(572)	(304)
Accounts payable	180	114	(4,078)	(2,535)	1,453	1,835
Accrued expenses and other	59	63	(470)	(119)	716	663
Additions to unearned revenue	382	257	779	467	1,376	805
Amortization of previously unearned revenue	(333)	(251)	(602)	(471)	(1,151)	(935)
Net cash provided by (used in) operating activities	594	423	(1,844)	(1,163)	3,222	3,205
INVESTING ACTIVITIES:
Purchases of fixed assets, including internal-use software and website development	(657)	(433)	(1,043)	(731)	(2,123)	(1,374)
Acquisitions, net of cash acquired, and other	(624)	(469)	(673)	(608)	(770)	(921)
Sales and maturities of marketable securities and other investments	1,251	2,028	2,989	3,967	5,864	6,138
Purchases of marketable securities and other investments	(565)	(2,077)	(1,417)	(3,189)	(4,485)	(6,746)
Net cash provided by (used in) investing activities	(595)	(951)	(144)	(561)	(1,514)	(2,903)
FINANCING ACTIVITIES:
Excess tax benefits from stock-based compensation	85	15	125	61	126	159
Common stock repurchased			(960)		(1,237)
Proceeds from long-term debt and other	123	34	190	123	242	197
Repayments of long-term debt, capital lease, and finance lease obligations	(141)	(140)	(293)	(251)	(483)	(398)
Net cash provided by (used in) financing activities	67	(91)	(938)	(67)	(1,352)	(42)
Foreign-currency effect on cash and cash equivalents	(19)	25	(8)	61	(68)	158
Net increase (decrease) in cash and cash equivalents	47	(594)	(2,934)	(1,730)	288	418
CASH AND CASH EQUIVALENTS, END OF PERIOD	2,335	2,047	2,335	2,047	2,335	2,047
SUPPLEMENTAL CASH FLOW INFORMATION:
Cash paid for interest on long term debt	8	3	14	6	22	12
Cash paid for income taxes (net of refunds)	20	(1)	39	6	66	35
Assets Held under Capital Leases
SUPPLEMENTAL CASH FLOW INFORMATION:
Fixed assets acquired	207	230	356	411	699	673
Assets Held under Build-To-Suit Leases
SUPPLEMENTAL CASH FLOW INFORMATION:
Fixed assets acquired	$ 15	$ 97	$ 31	$ 166	$ 125	$ 219