CONDENSED CONSOLIDATED STATEMENT OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Net revenues	$ 2,540	$ 2,422	$ 5,050	$ 4,905
Cost of net revenues	718	663	1,418	1,352
Gross profit	1,822	1,759	3,632	3,553
Operating expenses:
Sales and marketing	566	566	1,077	1,044
Product development	392	344	744	645
General and administrative	251	237	548	463
Provision for transaction losses	90	86	174	182
Amortization of acquired intangible assets	5	1	13	2
Total operating expenses	1,304	1,234	2,556	2,336
Income from operations	518	525	1,076	1,217
Gain (loss) on equity investments and warrant, net	(214)	(1,221)	(16)	(3,512)
Interest and other, net	(19)	(31)	(45)	(81)
Income (loss) from continuing operations before income taxes	285	(727)	1,015	(2,376)
Income tax benefit (provision)	(113)	191	(274)	501
Income (loss) from continuing operations	172	(536)	741	(1,875)
Income (loss) from discontinued operations, net of income taxes	(1)	5	(3)	3
Net income (loss)	$ 171	$ (531)	$ 738	$ (1,872)
Income (loss) per share - basic:
Continuing operations (in usd per share)	$ 0.32	$ (0.96)	$ 1.38	$ (3.28)
Discontinued operations (in usd per share)	0	0.01	(0.01)	0.01
Net income (loss) per share - basic (in usd per share)	0.32	(0.95)	1.37	(3.27)
Income (loss) per share - diluted:
Continuing operations (in usd per share)	0.32	(0.96)	1.37	(3.28)
Discontinued operations (in usd per share)	0	0.01	(0.01)	0.01
Net income (loss) per share - diluted (in usd per share)	$ 0.32	$ (0.95)	$ 1.36	$ (3.27)
Weighted-average shares:
Basic (in shares)	534	556	536	571
Diluted (in shares)	537	556	539	571