Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Shares	Common Stock and Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Balance (in shares) at Dec. 31, 2021		321.6
Beginning Balance at Dec. 31, 2021	$ 4,316.9		$ 6,972.6	$ (2.1)	$ (2,653.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	290.6				290.6
Other comprehensive income (loss), net	(50.5)			(50.5)
Issuance of common stock (in shares)		9.6
Issuance of common stock	56.8		56.8
Repurchase and retirement of common stock (in shares)		(6.7)
Repurchase and retirement of common stock	(226.8)		(85.6)		(141.2)
Share-based compensation expense	153.9		153.9
Payments of cash dividends	(202.8)		(202.8)
Balance (in shares) at Sep. 30, 2022		324.5
Ending Balance at Sep. 30, 2022	4,338.1		6,894.9	(52.6)	(2,504.2)
Balance (in shares) at Jun. 30, 2022		320.4
Beginning Balance at Jun. 30, 2022	4,248.7		6,874.2	(0.1)	(2,625.4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	121.5				121.5
Other comprehensive income (loss), net	(52.5)			(52.5)
Issuance of common stock (in shares)		4.1
Issuance of common stock	27.7		27.7
Repurchase and retirement of common stock	(0.5)		(0.2)		(0.3)
Share-based compensation expense	61.2		61.2
Payments of cash dividends	(68.0)		(68.0)
Balance (in shares) at Sep. 30, 2022		324.5
Ending Balance at Sep. 30, 2022	$ 4,338.1		6,894.9	(52.6)	(2,504.2)
Balance (in shares) at Dec. 31, 2022	322.9	322.9
Beginning Balance at Dec. 31, 2022	$ 4,475.1		6,846.4	4.2	(2,375.5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	185.9				185.9
Other comprehensive income (loss), net	17.9			17.9
Issuance of common stock (in shares)		9.3
Issuance of common stock	61.7		61.7
Repurchase and retirement of common stock (in shares)		(13.4)
Repurchase and retirement of common stock	(396.8)		(166.6)		(230.2)
Share-based compensation expense	197.9		197.9
Payments of cash dividends	$ (210.5)		(210.5)
Balance (in shares) at Sep. 30, 2023	318.8	318.8
Ending Balance at Sep. 30, 2023	$ 4,331.2		6,728.9	22.1	(2,419.8)
Balance (in shares) at Jun. 30, 2023		317.8
Beginning Balance at Jun. 30, 2023	4,354.9		6,749.7	31.1	(2,425.9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	76.1				76.1
Other comprehensive income (loss), net	(9.0)			(9.0)
Issuance of common stock (in shares)		5.5
Issuance of common stock	30.1		30.1
Repurchase and retirement of common stock (in shares)		(4.5)
Repurchase and retirement of common stock	(125.5)		(55.5)		(70.0)
Share-based compensation expense	74.6		74.6
Payments of cash dividends	$ (70.0)		(70.0)
Balance (in shares) at Sep. 30, 2023	318.8	318.8
Ending Balance at Sep. 30, 2023	$ 4,331.2		$ 6,728.9	$ 22.1	$ (2,419.8)