Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment Revision of Prior Period, Adjustment	Class B Common Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment Revision of Prior Period, Adjustment	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Beginning balance at Dec. 31, 2019	$ 1,161				$ 1,150	$ 681		$ (63)	$ (607)
Beginning balance, shares at Dec. 31, 2019			12,799,999	138,698,307					(14,116,534)
Net income (loss)	(289)					(289)
Cumulative effect adjustment from adoption of new accounting guidance at Dec. 31, 2020		$ (3)					$ (3)
Other comprehensive income (loss), net of tax	29							29
Issuance of common stock related to exercise of options and vesting of RSUs	0				0
Issuance of common stock related to exercise of options and vesting of RSUs, shares				2,076,914
Repurchase of common stock (Note 16)	$ (115)								$ (115)
Repurchase of common stock, shares	(4,707,450)								(4,707,450)
Withholding taxes on net share settlements of equity awards	$ (21)				(21)
Stock-based compensation (Note 15)	124				124
Other, shares									(20,630)
Ending balance at Dec. 31, 2020	886				1,253	389		(34)	$ (722)
Ending balance, shares at Dec. 31, 2020			12,799,999	140,775,221					(18,844,614)
Net income (loss)	(148)					(148)
Cumulative effect adjustment from adoption of new accounting guidance at Dec. 31, 2021	241
Other comprehensive income (loss), net of tax	(22)							(22)
Issuance of common stock related to exercise of options and vesting of RSUs	$ 8				8
Issuance of common stock related to exercise of options and vesting of RSUs, shares				3,881,428
Repurchase of common stock, shares	0
Purchase of capped calls, net of tax of $9 million (Note 10)	$ (26)				(26)
Withholding taxes on net share settlements of equity awards	(44)				(44)
Stock-based compensation (Note 15)	135				135
Ending balance at Dec. 31, 2021	$ 789				1,326	241		(56)	$ (722)
Ending balance, shares at Dec. 31, 2021	125,812,035		12,799,999	144,656,649					(18,844,614)
Net income (loss)	$ 20					20
Cumulative effect adjustment from adoption of new accounting guidance at Dec. 31, 2022	261
Other comprehensive income (loss), net of tax	(26)							(26)
Issuance of common stock related to exercise of options and vesting of RSUs	$ 0				0
Issuance of common stock related to exercise of options and vesting of RSUs, shares				2,234,889
Repurchase of common stock, shares	0
Withholding taxes on net share settlements of equity awards	$ (20)				(20)
Stock-based compensation (Note 15)	98				98
Ending balance at Dec. 31, 2022	$ 861				$ 1,404	$ 261		$ (82)	$ (722)
Ending balance, shares at Dec. 31, 2022	128,046,924		12,799,999	146,891,538					(18,844,614)