UNAUDITED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Total revenues	$ 2,288	$ 2,837
Operating expenses:
Marketing expenses	851	1,193
Sales and other expenses	377	215
Personnel, including stock-based compensation of $6 and $74, respectively	484	501
General and administrative	201	191
Information technology	78	65
Depreciation and amortization	117	116
Impairment of goodwill	489	0
Total operating expenses	2,597	2,281
Operating (loss) income	(309)	556
Other income (expense):
Interest income	32	35
Interest expense	(64)	(66)
Net (losses) gains on marketable equity securities	(307)	451
Impairment of investment	(100)	0
Foreign currency transactions and other	26	(8)
Total other (expense) income	(413)	412
(Loss) income before income taxes	(722)	968
Income tax (benefit) expense	(23)	203
Net (loss) income	$ (699)	$ 765
Net income applicable to common stockholders per basic common share (in dollars per share)	$ (17.01)	$ 17.01
Weighted-average number of basic common shares outstanding (in shares)	41,093	45,007
Net income applicable to common stockholders per diluted common share (in dollars per share)	$ (17.01)	$ 16.85
Weighted-average number of diluted common shares outstanding (in shares)	41,093	45,436
Agency revenues
Total revenues	$ 1,424	$ 1,949
Merchant revenues
Total revenues	659	603
Advertising and other revenues
Total revenues	$ 205	$ 285