CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Millions	Total	Class A Common Stock	Additional Paid-in Capital	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning Balance (in shares) at Dec. 31, 2018		53,871,184
Beginning Balance at Dec. 31, 2018	$ 1,335	$ 1	$ 294	$ (613)	$ 1,688	$ (35)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuances of treasury shares related to share-based compensation plans, net of forfeitures (in shares)		594,399
Issuances of treasury shares related to share-based compensation plans, net of forfeitures	11		(3)	14
Shares withheld to fund withholding tax obligations related to share-based compensation plans (in shares)		(224,765)
Shares withheld to fund withholding tax obligations related to share-based compensation plans	(43)			(43)
Share-based compensation	48		48
Repurchase of common stock (in shares)		(237,886)
Repurchase of common stock	(47)			(47)
Net income	544				544
Changes in unrealized gains and losses on anticipated sales hedging transactions (net of income taxes)	(10)					(10)
Foreign currency translation adjustment	1					1
Ending Balance (in shares) at Dec. 31, 2019		54,002,932
Ending Balance at Dec. 31, 2019	1,839	$ 1	339	(689)	2,232	(44)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuances of treasury shares related to share-based compensation plans, net of forfeitures (in shares)		557,599
Issuances of treasury shares related to share-based compensation plans, net of forfeitures	12		5	7
Shares withheld to fund withholding tax obligations related to share-based compensation plans (in shares)		(149,709)
Shares withheld to fund withholding tax obligations related to share-based compensation plans	(37)			(37)
Share-based compensation	51		51
Repurchase of common stock (in shares)		(948,740)
Repurchase of common stock	(200)			(200)
Net income	504				504
Changes in unrealized gains and losses on anticipated sales hedging transactions (net of income taxes)	(30)					(30)
Foreign currency translation adjustment	5					5
Ending Balance (in shares) at Dec. 31, 2020		53,462,082
Ending Balance at Dec. 31, 2020	2,144	$ 1	395	(919)	2,736	(69)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuances of treasury shares related to share-based compensation plans, net of forfeitures (in shares)		150,097
Issuances of treasury shares related to share-based compensation plans, net of forfeitures	(13)		(9)	(4)
Shares withheld to fund withholding tax obligations related to share-based compensation plans (in shares)		(87,789)
Shares withheld to fund withholding tax obligations related to share-based compensation plans	(43)			(43)
Share-based compensation	76		76
Repurchase of common stock (in shares)		(109,115)
Repurchase of common stock	(57)			(57)
Net income	837				837
Changes in unrealized gains and losses on anticipated sales hedging transactions (net of income taxes)	46					46
Foreign currency translation adjustment	(6)					(6)
Ending Balance (in shares) at Dec. 31, 2021		53,415,275
Ending Balance at Dec. 31, 2021	$ 2,984	$ 1	$ 462	$ (1,023)	$ 3,573	$ (29)