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	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
Beginning balance (in shares) at Dec. 31, 2022			1,773
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	91					91
Foreign currency translation adjustments, net of tax	(19)				(19)
Actuarial gain on defined severance benefits, net of tax	1				1
Issuance of common stock upon exercise of stock options (in shares)			1
Issuance of common stock upon exercise of stock options	3			3
Issuance of common stock upon settlement of restricted stock units (in shares)			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
Ending balance (in shares) at Mar. 31, 2023			1,777
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	145					145
Foreign currency translation adjustments, net of tax	(8)				(8)
Actuarial gain on defined severance benefits, net of tax	(10)				(10)
Issuance of common stock upon exercise of stock options (in shares)			1
Issuance of common stock upon exercise of stock options	2			2
Issuance of common stock upon settlement of restricted stock units (in shares)			3
Issuance of common stock upon settlement of restricted stock units	0
Equity-based compensation	86			86
Equity, including portion attributable to noncontrolling interest, ending balance at Jun. 30, 2023	2,775	0	$ 0	8,315	(33)	(5,507)	0
Ending balance (in shares) at Jun. 30, 2023			1,781
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	91					91
Foreign currency translation adjustments, net of tax	(26)				(26)
Actuarial gain on defined severance benefits, net of tax	2				2
Issuance of common stock upon exercise of stock options (in shares)			1
Issuance of common stock upon exercise of stock options	2			2
Issuance of common stock upon settlement of restricted stock units (in shares)			4
Issuance of common stock upon settlement of restricted stock units	0
Equity-based compensation	84			84
Equity, including portion attributable to noncontrolling interest, ending balance at Sep. 30, 2023	2,928	0	$ 0	8,401	(57)	(5,416)	0
Ending balance (in shares) at Sep. 30, 2023			1,786
Equity, including portion attributable to noncontrolling interest, beginning balance at Dec. 31, 2023	4,089	15	$ 0	8,489	(17)	(4,383)	0
Beginning balance (in shares) at Dec. 31, 2023			1,791
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1	(25)				5	(4)
Capital contributions from noncontrolling interest holders	0	55
Recognition of noncontrolling interest upon acquisition	10	69					10
Foreign currency translation adjustments, net of tax	(105)				(105)
Actuarial gain 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 (in shares)			4
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
Ending balance (in shares) at Mar. 31, 2024			1,795
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(84)	(21)				(77)	(7)
Foreign currency translation adjustments, net of tax	(79)	(1)			(79)
Actuarial gain on defined severance benefits, net of tax	2				2
Issuance of common stock upon exercise of stock options (in shares)			1
Issuance of common stock upon exercise of stock options	0
Issuance of common stock upon settlement of restricted stock units (in shares)			4
Issuance of common stock upon settlement of restricted stock units	0
Repurchase of Class A common stock (in shares)			(10)
Repurchase of Class A common stock	(178)			(178)
Equity-based compensation	109			109
Equity, including portion attributable to noncontrolling interest, ending balance at Jun. 30, 2024	3,855	92	$ 0	8,509	(198)	(4,455)	(1)
Ending balance (in shares) at Jun. 30, 2024			1,790
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	75	(11)				70	5
Foreign currency translation adjustments, net of tax	146	3			146
Actuarial gain on defined severance benefits, net of tax	1				1
Issuance of common stock upon exercise of stock options	2			2
Issuance of common stock upon settlement of restricted stock units (in shares)			5
Issuance of common stock upon settlement of restricted stock units	0
Equity-based compensation	114			114
Equity, including portion attributable to noncontrolling interest, ending balance at Sep. 30, 2024	$ 4,193	$ 84	$ 0	$ 8,625	$ (51)	$ (4,385)	$ 4
Ending balance (in shares) at Sep. 30, 2024			1,795