Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Assets
Cash and cash equivalents	$ 361,074	$ 1,582,343
Marketable securities	701,662	225,165
Accounts receivable, net of allowance of $163 at March 31, 2012 and December 31, 2011	146,746	135,633
Income tax receivable	6,430	18,583
Deferred tax assets	21,794	23,515
Restricted cash	260,021	3,846
Other current assets	47,674	34,824
Total current assets	1,545,401	2,023,909
Long-term marketable securities	458,731	110,098
Goodwill	195,796	91,765
Other intangible assets, net	143,426	32,112
Property and equipment, net	255,251	246,740
Restricted cash	60	4,082
Other long-term assets	7,281	7,940
Total assets	2,605,946	2,516,646
Liabilities and stockholders' equity
Accounts payable	44,312	44,020
Other current liabilities	181,899	167,271
Deferred revenue	478,303	457,394
Total current liabilities	704,514	668,685
Deferred revenue	10,534	23,251
Deferred tax liabilities	53,020	13,950
Other non-current liabilities	62,508	61,221
Total liabilities	830,576	767,107
Stockholders' equity:
Common stock, $.00000625 par value, and additional paid in capital-authorized: 2,020,517 shares; outstanding: 732,178 shares (Class A, 158,317 Class B, 553,344 Class C, 20,517) as of March 31, 2012 and 721,592 shares (Class A, 121,381, Class B, 579,694 Class C, 20,517) as of December 31, 2011	2,537,103	2,426,168
Treasury stock	(282,924)	(282,897)
Accumulated other comprehensive income	636	362
Accumulated deficit	(479,445)	(394,094)
Total stockholders' equity	1,775,370	1,749,539
Total liabilities and stockholders' equity	$ 2,605,946	$ 2,516,646