UNAUDITED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 812,786	$ 632,836
Restricted cash	6,609	3,771
Short-term investments	3,129,556	2,024,827
Accounts receivable, net of allowance for doubtful accounts of $7,382 and $6,103, respectively	429,520	264,453
Prepaid expenses and other current assets	164,745	104,202
Deferred income taxes	35,083	36,755
Total current assets	4,578,299	3,066,844
Property and equipment, net	78,616	64,322
Intangible assets, net	196,037	200,151
Goodwill	508,331	504,784
Deferred income taxes	29,040	111,080
Other assets	38,483	23,490
Total assets	5,428,806	3,970,671
Current liabilities:
Accounts payable	201,203	146,867
Accrued expenses and other current liabilities	272,087	222,134
Deferred merchant bookings	384,519	239,157
Convertible debt (see Note 8)	508,826	497,640
Total current liabilities	1,366,635	1,105,798
Deferred income taxes	45,237	46,990
Other long-term liabilities	41,122	39,183
Convertible debt (See Note 8)	871,667	0
Total liabilities	2,324,661	1,191,971
Redeemable noncontrolling interests (see Note 11)	110,184	127,045
Convertible debt (see Note 8)	66,174	77,360
Stockholders' equity:
Common stock, $0.008 par value, authorized 1,000,000,000 shares, 58,007,108 and 57,578,431 shares issued, respectively	450	446
Treasury stock, 8,181,729 and 7,779,645 shares, respectively	(1,058,754)	(803,586)
Additional paid-in capital	2,569,123	2,431,279
Accumulated earnings	1,524,615	1,033,738
Accumulated other comprehensive loss	(107,647)	(87,582)
Total stockholders' equity	2,927,787	2,574,295
Total liabilities and stockholders' equity	$ 5,428,806	$ 3,970,671