CONDENSED CONSOLIDATED STATEMENTS OF REDEEMABLE NON-CONTROLLING INTERESTS AND EQUITY (unaudited) - USD ($) shares in Millions, $ in Millions	Total	Redeemable Noncontrolling Interests	Class A and Class B common stock	Additional paid-in capital	Accumulated other comprehensive (loss) income	Accumulated deficit	Noncontrolling interests
Equity, including portion attributable to noncontrolling interest, beginning balance at Dec. 31, 2022	$ 2,414	$ 0	$ 0	$ 8,154	$ 3	$ (5,743)	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	91					91
Foreign currency translation adjustments, net of tax	(19)				(19)
Actuarial gain (loss) on defined severance benefits, net of tax	1				1
Issuance of common stock upon exercise of stock options	3			3
Issuance of common stock upon settlement of restricted stock units	0
Equity-based compensation	70			70
Equity, including portion attributable to noncontrolling interest, ending balance at Mar. 31, 2023	2,560	0	$ 0	8,227	(15)	(5,652)	0
Beginning balance (in shares) at Dec. 31, 2022			1,773
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net issuance of common stock upon exercise of stock options (in shares)			1
Issuance of common stock upon settlement of restricted stock units (in shares)			3
Ending balance (in shares) at Mar. 31, 2023			1,777
Equity, including portion attributable to noncontrolling interest, beginning balance at Dec. 31, 2023	4,089	15	$ 0	8,489	(17)	(4,383)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1	(25)				5	(4)
Capital contributions from noncontrolling interest holders	0	55
Recognition of non-controlling interest upon acquisition	10	69					10
Foreign currency translation adjustments, net of tax	(105)				(105)
Actuarial gain (loss) on defined severance benefits, net of tax	1				1
Issuance of common stock upon exercise of stock options	1			1
Issuance of common stock upon settlement of restricted stock units	0
Equity-based compensation	88			88
Equity, including portion attributable to noncontrolling interest, ending balance at Mar. 31, 2024	$ 4,085	$ 114	$ 0	$ 8,578	$ (121)	$ (4,378)	$ 6
Beginning balance (in shares) at Dec. 31, 2023			1,791
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon settlement of restricted stock units (in shares)			4
Ending balance (in shares) at Mar. 31, 2024			1,795