CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 1,289,994	$ 1,536,349
Restricted cash	10,476	6,641
Short-term investments	5,462,720	3,646,845
Accounts receivable, net of allowance for doubtful accounts of $14,116 and $10,322, respectively	535,962	367,512
Prepaid expenses and other current assets	107,102	84,290
Deferred income taxes	74,687	40,738
Total current assets	7,480,941	5,682,375
Property and equipment, net	135,053	89,269
Intangible assets, net	1,019,985	208,113
Goodwill	1,767,912	522,672
Deferred income taxes	7,055	31,485
Other assets	33,514	35,828
Total assets	10,444,460	6,569,742
Current liabilities:
Accounts payable	247,345	184,648
Accrued expenses and other current liabilities	545,342	387,911
Deferred merchant bookings	437,127	368,823
Convertible debt (see Note 11)	151,931	520,344
Total current liabilities	1,381,745	1,461,726
Deferred income taxes	326,425	45,159
Other long-term liabilities	75,981	68,944
Convertible debt (See Note 11)	1,742,047	881,996
Total liabilities	3,526,198	2,457,825
Commitments and Contingencies (See Note 16)
Redeemable noncontrolling interests (See Note 13)	0	160,287
Convertible debt (See Note 11)	8,533	54,655
Stockholders' equity:
Common stock, $0.008 par value, authorized 1,000,000,000 shares, 61,265,160 and 58,055,586 shares issued, respectively	476	450
Treasury stock, 9,256,721 and 8,184,787, respectively	(1,987,207)	(1,060,607)
Additional paid-in capital	4,592,979	2,612,197
Accumulated earnings	4,218,752	2,368,611
Accumulated other comprehensive income (loss)	84,729	(23,676)
Total stockholders' equity	6,909,729	3,896,975
Total liabilities and stockholders' equity	$ 10,444,460	$ 6,569,742