UNAUDITED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 2,434,020	$ 2,081,075
Short-term investments	2,936,158	2,218,880
Accounts receivable, net of allowance for doubtful accounts of $27,179 and $25,565, respectively	934,254	860,115
Prepaid expenses and other current assets	683,450	241,449
Total current assets	6,987,882	5,401,519
Property and equipment, net	381,197	347,017
Intangible assets, net	1,951,999	1,993,885
Goodwill	2,402,306	2,396,906
Long-term investments	10,140,630	9,591,067
Other assets	130,238	108,579
Total assets	21,994,252	19,838,973
Current liabilities:
Accounts payable	407,575	419,108
Accrued expenses and other current liabilities	986,681	857,467
Deferred merchant bookings	879,405	614,361
Convertible debt	974,538	967,734
Total current liabilities	3,248,199	2,858,670
Deferred income taxes	497,847	822,334
Other long-term liabilities	128,564	138,767
Long-term debt	7,286,102	6,170,522
Total liabilities	11,160,712	9,990,293
Convertible debt	22,521	28,538
Stockholders' equity:
Common stock, $0.008 par value; authorized 1,000,000,000 shares, 62,495,991 and 62,379,247 shares issued, respectively	486	485
Treasury stock, 13,315,844 and 13,190,929 shares, respectively	(7,067,508)	(6,855,164)
Additional paid-in capital	5,558,194	5,482,653
Retained earnings	12,072,792	11,326,852
Accumulated other comprehensive income (loss)	247,055	(134,684)
Total stockholders' equity	10,811,019	9,820,142
Total liabilities and stockholders' equity	$ 21,994,252	$ 19,838,973