Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Revenue	[1]	$ 1,492	$ 902	$ 604
Costs and expenses:
Cost of revenue (exclusive of depreciation and amortization as shown separately below))		116	74	55
Selling and marketing		784	469	316
Technology and content		222	212	220
General and administrative		172	167	173
Depreciation and amortization		97	111	125
Impairment of goodwill		0	0	3
Restructuring and other related reorganization costs (Note 1)		0	0	41
Total costs and expenses:		1,391	1,033	933
Operating income (loss)		101	(131)	(329)
Other income (expense):
Interest expense		(44)	(45)	(35)
Interest income		15	1	3
Other income (expense), net (Note 17)		(5)	(10)	(8)
Total other income (expense), net		(34)	(54)	(40)
Income (loss) before income taxes		67	(185)	(369)
(Provision) benefit for income taxes (Note 11)		(47)	37	80
Net income (loss)		$ 20	$ (148)	$ (289)
Earnings (loss) per share attributable to common stockholders (Note 16):
Basic		$ 0.14	$ (1.08)	$ (2.14)
Diluted		$ 0.14	$ (1.08)	$ (2.14)
Numerator used to compute net income (loss) per share attributable to common stockholders (Note 16):
Basic		$ 20	$ (148)	$ (289)
Diluted		$ 21	$ (148)	$ (289)
Weighted average common shares outstanding (Note 16):
Basic		139,923	137,234	134,858
Diluted		145,670	137,234	134,858

[1] Our revenue is recognized primarily at a point in time for all reported segments.