UNAUDITED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 1,096,094	$ 1,536,349
Restricted cash	9,034	6,641
Short-term investments	5,487,526	3,646,845
Accounts receivable, net of allowance for doubtful accounts of $12,256 and $10,322, respectively	706,234	367,512
Prepaid expenses and other current assets	107,688	84,290
Deferred income taxes	82,471	40,738
Total current assets	7,489,047	5,682,375
Property and equipment, net	119,766	89,269
Intangible assets, net	1,038,863	208,113
Goodwill	1,761,194	522,672
Deferred income taxes	827	31,485
Other assets	35,958	35,828
Total assets	10,445,655	6,569,742
Current liabilities:
Accounts payable	312,896	184,648
Accrued expenses and other current liabilities	544,021	387,911
Deferred merchant bookings	430,661	368,823
Convertible debt (see Note 8)	538,266	520,344
Total current liabilities	1,825,844	1,461,726
Deferred income taxes	371,498	45,159
Other long-term liabilities	83,934	68,944
Convertible debt (See Note 8)	1,731,027	881,996
Total liabilities	4,012,303	2,457,825
Redeemable noncontrolling interests (see Note 11)	0	160,287
Convertible debt (see Note 8)	36,730	54,655
Stockholders' equity:
Common stock, $0.008 par value, authorized 1,000,000,000 shares, 60,274,497 and 58,055,586 shares issued, respectively	468	450
Treasury stock, 9,214,110 and 8,184,787 shares, respectively	(1,943,615)	(1,060,607)
Additional paid-in capital	4,459,333	2,612,197
Accumulated earnings	3,840,675	2,368,611
Accumulated other comprehensive income (loss)	39,761	(23,676)
Total stockholders' equity	6,396,622	3,896,975
Total liabilities and stockholders' equity	$ 10,445,655	$ 6,569,742