UNAUDITED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Total revenues	$ 630	$ 3,850	$ 2,918	$ 6,687
Operating expenses:
Marketing expenses	211	1,367	1,062	2,560
Sales and other expenses	131	248	508	463
Personnel, including stock-based compensation of $77, $79, $83 and $153, respectively	452	619	936	1,120
General and administrative	104	180	305	371
Information technology	70	70	148	135
Depreciation and amortization	112	119	229	235
Restructuring and other exit costs	34	0	34	0
Impairment of goodwill	0	0	489	0
Total operating expenses	1,114	2,603	3,711	4,884
Operating (loss) income	(484)	1,247	(793)	1,803
Other income (expense):
Interest income	12	34	44	69
Interest expense	(96)	(68)	(160)	(134)
Net gains/(losses) on marketable equity securities	835	17	528	468
Impairment of investment	0	0	(100)	0
Foreign currency transactions and other	(58)	(23)	(32)	(31)
Total other income (expense)	693	(40)	280	372
Income (loss) before income taxes	209	1,207	(513)	2,175
Income tax expense	87	228	64	431
Net income (loss)	$ 122	$ 979	$ (577)	$ 1,744
Net income applicable to common stockholders per basic common share (in dollars per share)	$ 2.98	$ 22.62	$ (14.07)	$ 39.52
Weighted-average number of basic common shares outstanding (in shares)	40,922	43,251	41,007	44,124
Net income applicable to common stockholders per diluted common share (in dollars per share)	$ 2.97	$ 22.44	$ (14.07)	$ 39.17
Weighted-average number of diluted common shares outstanding (in shares)	40,995	43,601	41,007	44,514
Agency revenues
Total revenues	$ 357	$ 2,607	$ 1,781	$ 4,556
Merchant revenues
Total revenues	245	959	904	1,562
Advertising and other revenues
Total revenues	$ 28	$ 284	$ 233	$ 569