Segment and Geographic Information - Net Revenues and Adjusted EBITDA (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information
Total net revenue	$ 3,117	$ 3,171	$ 5,846	$ 5,945
Adjusted EBITDA	163	128	238	114
Less: reconciling items	(205)	(174)	(528)	(515)
Net loss	(42)	(46)	(290)	(401)
Depreciation and amortization	99	102	203	206
Equity-based compensation and related taxes	98	167	225	318
Interest expense, net	4	5	10	10
Other expense, net	1	(3)	5	(2)
Provision for income taxes, net	2	2	5	4
Impairment and other related net charges	1	1	1	14
Restructuring charges	0	0	79	65
Gain on debt extinguishment	0	(100)	0	(100)
Total reconciling items	205	174	528	515
Impairment of leasehold				5
2024 Notes | Convertible Debt
Segment Reporting Information
Repurchase of aggregate principal amount		83		83
2025 Notes | Convertible Debt
Segment Reporting Information
Repurchase of aggregate principal amount		535		535
Construction in progress
Segment Reporting Information
Tangible asset impairment charges		1		9
U.S.
Segment Reporting Information
Total net revenue	2,730	2,785	5,121	5,200
Adjusted EBITDA	199	161	320	190
International
Segment Reporting Information
Total net revenue	387	386	725	745
Adjusted EBITDA	$ (36)	$ (33)	$ (82)	$ (76)