CONSOLIDATED STATEMENTS OF REDEEMABLE NONCONTROLLING INTERESTS AND EQUITY - USD ($) shares in Millions, $ in Millions	Total	Redeemable Noncontrolling Interest	Class A and Class B Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Noncontrolling Interests
Beginning Balance at Dec. 31, 2021	$ 2,176	$ 0	$ 0	$ 7,874	$ (47)	$ (5,651)	$ 0
Beginning balance (in shares) at Dec. 31, 2021			1,754
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(92)					(92)
Foreign currency translation adjustments, net of tax	9				9
Actuarial gain on defined severance benefits, net of tax	41				41
Issuance of common stock upon exercise of stock options (in shares)			9
Issuance of common stock upon exercise of stock options	18			18
Issuance of common stock upon settlement of restricted stock units (in shares)			10
Issuance of common stock upon settlement of restricted stock units	0
Equity-based compensation	262			262
Ending Balance at Dec. 31, 2022	2,414	0	$ 0	8,154	3	(5,743)	0
Ending balance (in shares) at Dec. 31, 2022			1,773
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,360					1,360
Foreign currency translation adjustments, net of tax	(2)				(2)
Actuarial gain on defined severance benefits, net of tax	(18)				(18)
Issuance of common stock upon exercise of stock options (in shares)			4
Issuance of common stock upon exercise of stock options	9			9
Issuance of common stock upon settlement of restricted stock units (in shares)			14
Issuance of common stock upon settlement of restricted stock units	0
Equity-based compensation	326			326
Noncontrolling interest contribution	0	15
Ending Balance at Dec. 31, 2023	4,089	15	$ 0	8,489	(17)	(4,383)	0
Ending balance (in shares) at Dec. 31, 2023			1,791
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	143	(77)				154	(11)
Recognition of noncontrolling interest upon acquisition	10	69					10
Foreign currency translation adjustments, net of tax	(353)	1			(353)
Actuarial gain on defined severance benefits, net of tax	(34)				(34)
Issuance of common stock upon exercise of stock options (in shares)			1
Issuance of common stock upon exercise of stock options	4			4
Issuance of common stock upon settlement of restricted stock units (in shares)			19
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	433			433
Noncontrolling interest contribution	0	55
Re-measurement of noncontrolling interest	(12)	12		(12)
Ending Balance at Dec. 31, 2024	$ 4,102	$ 75	$ 0	$ 8,736	$ (404)	$ (4,229)	$ (1)
Ending balance (in shares) at Dec. 31, 2024			1,801