CONSOLIDATED STATEMENTS OF REDEEMABLE NONCONTROLLING INTERESTS AND EQUITY - USD ($) shares in Millions, $ in Millions	Total	Redeemable Noncontrolling Interests	Class A and Class B Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Noncontrolling Interests
Redeemable noncontrolling interests, beginning balance at Dec. 31, 2022		$ 0
Increase (Decrease) in Temporary Equity [Roll Forward]
Foreign currency translation adjustments, net of tax	$ (2)				$ (2)
Noncontrolling interest contribution / Capital contributions from noncontrolling interest holders	0	15
Redeemable noncontrolling interests, ending balance at Dec. 31, 2023		15
Beginning balance (in shares) at Dec. 31, 2022			1,773.0
Equity, including portion attributable to noncontrolling interest, beginning balance at Dec. 31, 2022	2,414		$ 0	$ 8,154	3	$ (5,743)	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,360					1,360
Foreign currency translation adjustments, net of tax	(2)				(2)
Actuarial loss on defined severance benefits, net of tax	(18)				(18)
Issuance of common stock upon exercise of stock options (in shares)			4.0
Issuance of common stock upon exercise of stock options	9			9
Issuance of common stock upon settlement of restricted stock units (in shares)			14.0
Issuance of common stock upon settlement of restricted stock units	0
Equity-based compensation	326			326
Ending balance (in shares) at Dec. 31, 2023			1,791.0
Equity, including portion attributable to noncontrolling interest, ending balance at Dec. 31, 2023	4,089		$ 0	8,489	(17)	(4,383)	0
Increase (Decrease) in Temporary Equity [Roll Forward]
Net income		(77)
Foreign currency translation adjustments, net of tax	(353)	1			(353)
Noncontrolling interest contribution / Capital contributions from noncontrolling interest holders	0	55
Recognition of noncontrolling interest upon acquisition	10	69					10
Re-measurement of noncontrolling interest	(12)	12		(12)
Redeemable noncontrolling interests, ending balance at Dec. 31, 2024		75
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	143					154	(11)
Foreign currency translation adjustments, net of tax	(353)	1			(353)
Actuarial loss on defined severance benefits, net of tax	(34)				(34)
Issuance of common stock upon exercise of stock options (in shares)			1.0
Issuance of common stock upon exercise of stock options	4			4
Issuance of common stock upon settlement of restricted stock units (in shares)			19.0
Issuance of common stock upon settlement of restricted stock units	0
Repurchase of Class A common stock (in shares)			(10.0)
Repurchase of Class A common stock	(178)			(178)
Equity-based compensation	433			433
Recognition of noncontrolling interest upon acquisition	10	69					10
Re-measurement of noncontrolling interest	(12)	12		(12)
Ending balance (in shares) at Dec. 31, 2024			1,801.0
Equity, including portion attributable to noncontrolling interest, ending balance at Dec. 31, 2024	4,102		$ 0	8,736	(404)	(4,229)	(1)
Increase (Decrease) in Temporary Equity [Roll Forward]
Net income		4
Foreign currency translation adjustments, net of tax	14	(3)			14
Acquisition of noncontrolling interest	52	(75)		55	(2)		(1)
Dividends paid to noncontrolling interest	0	(4)
Re-measurement of noncontrolling interest	(3)	3		(3)
Redeemable noncontrolling interests, ending balance at Dec. 31, 2025		0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	210					208	2
Foreign currency translation adjustments, net of tax	14	(3)			14
Actuarial loss on defined severance benefits, net of tax	11				11
Issuance of common stock upon exercise of stock options (in shares)			2.0
Issuance of common stock upon exercise of stock options	5			5
Issuance of common stock upon settlement of restricted stock units (in shares)			24.0
Issuance of common stock upon settlement of restricted stock units	$ 0
Repurchase of Class A common stock (in shares)	(8.8)		(9.0)
Repurchase of Class A common stock	$ (243)			(243)
Equity-based compensation	475			475
Acquisition of noncontrolling interest (in shares)			5.0
Acquisition of noncontrolling interest	52	(75)		55	(2)		(1)
Re-measurement of noncontrolling interest	(3)	$ 3		(3)
Ending balance (in shares) at Dec. 31, 2025			1,823.0
Equity, including portion attributable to noncontrolling interest, ending balance at Dec. 31, 2025	$ 4,623		$ 0	$ 9,025	$ (381)	$ (4,021)	$ 0