Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Revenue (Note 3)	[1]	$ 417	$ 235	$ 679	$ 358
Costs and expenses:
Cost of revenue (exclusive of depreciation and amortization as shown separately below)		31	19	53	31
Selling and marketing		217	123	357	196
Technology and content		53	54	107	109
General and administrative		28	46	68	84
Depreciation and amortization		25	28	50	57
Total costs and expenses		354	270	635	477
Operating income (loss)		63	(35)	44	(119)
Other income (expense):
Interest expense		(11)	(11)	(23)	(22)
Interest income and other, net		1	0	0	0
Total other income (expense), net		(10)	(11)	(23)	(22)
Income (loss) before income taxes		53	(46)	21	(141)
(Provision) benefit for income taxes (Note 8)		(22)	6	(24)	21
Net income (loss)		$ 31	$ (40)	$ (3)	$ (120)
Earnings (loss) per share attributable to common stockholders (Note 12):
Basic		$ 0.22	$ (0.29)	$ (0.02)	$ (0.88)
Diluted		$ 0.21	$ (0.29)	$ (0.02)	$ (0.88)
Weighted average common shares outstanding (Note 12):
Basic		139,692	137,076	139,392	136,411
Diluted		145,496	137,076	139,392	136,411

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