UNAUDITED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 898,470	$ 632,836
Restricted cash	7,214	3,771
Short-term investments	3,769,527	2,024,827
Accounts receivable, net of allowance for doubtful accounts of $8,502 and $6,103, respectively	493,777	264,453
Prepaid expenses and other current assets	152,722	104,202
Deferred income taxes	44,019	36,755
Total current assets	5,365,729	3,066,844
Property and equipment, net	81,931	64,322
Intangible assets, net	192,488	200,151
Goodwill	517,721	504,784
Deferred income taxes	23,230	111,080
Other assets	36,710	23,490
Total assets	6,217,809	3,970,671
Current liabilities:
Accounts payable	240,176	146,867
Accrued expenses and other current liabilities	377,326	222,134
Deferred merchant bookings	343,296	239,157
Convertible debt (see Note 8)	514,542	497,640
Total current liabilities	1,475,340	1,105,798
Deferred income taxes	46,305	46,990
Other long-term liabilities	47,813	39,183
Convertible debt (See Note 8)	876,809	0
Total liabilities	2,446,267	1,191,971
Redeemable noncontrolling interests (see Note 11)	133,221	127,045
Convertible debt (see Note 8)	60,457	77,360
Stockholders' equity:
Common stock, $0.008 par value, authorized 1,000,000,000 shares, 58,047,595 and 57,578,431 shares issued, respectively	450	446
Treasury stock, 8,182,134 and 7,779,645 shares, respectively	(1,058,983)	(803,586)
Additional paid-in capital	2,593,883	2,431,279
Accumulated earnings	2,105,386	1,033,738
Accumulated other comprehensive loss	(62,872)	(87,582)
Total stockholders' equity	3,577,864	2,574,295
Total liabilities and stockholders' equity	$ 6,217,809	$ 3,970,671