CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 2,998	$ 3,323
Marketable securities	9,631	8,126
Accounts receivable, net of allowances for doubtful accounts of $31 and $38 as of March 31, 2014 and December 31, 2013, respectively	1,006	1,109
Prepaid expenses and other current assets	425	512
Total current assets	14,060	13,070
Property and equipment, net	3,074	2,882
Goodwill and intangible assets, net	1,682	1,722
Other assets	212	221
Total assets	19,028	17,895
Current liabilities:
Accounts payable	85	87
Developer partners payable	188	181
Accrued expenses and other current liabilities	525	555
Deferred revenue and deposits	38	38
Current portion of capital lease obligations	201	239
Total current liabilities	1,037	1,100
Capital lease obligations, less current portion	191	237
Other liabilities	1,063	1,088
Total liabilities	2,291	2,425
Stockholders' equity:
Common stock, $0.000006 par value; 5,000 million Class A shares authorized, 1,991 million and 1,970 million shares issued and outstanding, including 5 million and 6 million outstanding shares subject to repurchase, as of March 31, 2014 and December 31, 2013, respectively; 4,141 million Class B shares authorized, 573 million and 577 million shares issued and outstanding, including 6 million outstanding shares subject to repurchase, as of March 31, 2014 and December 31, 2013, respectively	0	0
Additional paid-in capital	12,921	12,297
Accumulated other comprehensive income	15	14
Retained earnings	3,801	3,159
Total stockholders' equity	16,737	15,470
Total liabilities and stockholders' equity	$ 19,028	$ 17,895