CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current assets:
Cash and Cash Equivalents	$ 14,778	$ 9,983
Marketable securities	33,310	34,643
Total cash, cash equivalents, and marketable securities	48,088	44,626
Accounts receivable, net of allowance of $133 and $581	7,885	5,427
Inventories	505	35
Receivable under reverse repurchase agreements	700	745
Deferred income taxes, net	1,144	215
Prepaid revenue share, expenses and other assets	2,132	1,710
Total current assets	60,454	52,758
Prepaid revenue share, expenses and other assets, non-current	2,011	499
Non-marketable equity securities	1,469	790
Property and equipment, net	11,854	9,603
Intangible assets, net	7,473	1,578
Goodwill	10,537	7,346
Total assets	93,798	72,574
Current liabilities:
Accounts payable	2,012	588
Short-term debt	2,549	1,218
Accrued compensation and benefits	2,239	1,818
Accrued expenses and other current liabilities	3,258	1,370
Accrued revenue share	1,471	1,168
Securities lending payable	1,673	2,007
Deferred revenue	895	547
Income taxes payable, net	240	197
Total current liabilities	14,337	8,913
Long-term debt	2,988	2,986
Deferred revenue, non-current	100	44
Income taxes payable, non-current	2,046	1,693
Deferred income taxes, net, non-current	1,872	287
Other long-term liabilities	740	506
Commitments and contingencies
Stockholders' equity:
Convertible preferred stock, $0.001 par value per share, 100,000 shares authorized; no shares issued and outstanding	0	0
Class A and Class B common stock and additional paid-in capital, $0.001 par value per share: 9,000,000 shares authorized (Class A 6,000,000, Class B 3,000,000) and 12,000,000 shares authorized (Class A 9,000,000, Class B 3,000,000); 324,895 (Class A 257,553, Class B 67,342) and par value of $325 (Class A $258, Class B $67) and 329,979 (Class A 267,448, Class B 62,531) and par value of $330 (Class A $267, Class B $63) shares issued and outstanding	22,835	20,264
Class C capital stock, $0.001 par value per share, 3,000,000 shares authorized; no shares issued and outstanding	0	0
Accumulated other comprehensive income	538	276
Retained earnings	48,342	37,605
Total stockholders' equity	71,715	58,145
Total liabilities and stockholders' equity	$ 93,798	$ 72,574