UNAUDITED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 5,256	$ 2,624
Short-term investments in marketable securities	1,553	3,660
Accounts receivable, net of allowance for doubtful accounts of $56 and $61, respectively	1,973	1,523
Prepaid expenses and other current assets	1,238	600
Total current assets	10,020	8,407
Property and equipment, net	716	656
Operating lease assets	639	0
Intangible assets, net	2,041	2,125
Goodwill	2,915	2,910
Long-term investments	4,618	8,408
Other assets	545	181
Total assets	21,494	22,687
Current liabilities:
Accounts payable	1,291	1,134
Accrued expenses and other current liabilities	1,740	1,399
Deferred merchant bookings	2,343	1,022
Convertible debt	975	0
Total current liabilities	6,349	3,555
Deferred income taxes	504	370
Operating lease liabilities	495	0
Long-term U.S. transition tax liability	1,063	1,166
Other long-term liabilities	90	162
Long-term debt	7,686	8,649
Total liabilities	16,187	13,902
Commitments and Contingencies
Stockholders' equity:
Common stock, $0.008 par value; authorized 1,000,000,000 shares, 63,143,816 and 62,948,762 shares issued, respectively	0	0
Treasury stock, 20,378,354 and 17,317,126 shares, respectively	(20,173)	(14,711)
Additional paid-in capital	5,599	5,445
Retained earnings	20,111	18,367
Accumulated other comprehensive loss	(230)	(316)
Total stockholders' equity	5,307	8,785
Total liabilities and stockholders' equity	$ 21,494	$ 22,687