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
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	55.7				55.7
Other comprehensive income, net	13.8			13.8
Issuance of common stock (in shares)		4.8
Issuance of common stock	28.6		28.6
Repurchase and retirement of common stock (in shares)		(3.6)
Repurchase and retirement of common stock	(126.3)		(46.3)		(80.0)
Share-based compensation expense	45.7		45.7
Payments of cash dividends	(67.5)		(67.5)
Balance (in shares) at Mar. 31, 2022		322.8
Balance at Mar. 31, 2022	$ 4,266.9		6,933.1	11.7	(2,677.9)
Balance (in shares) at Dec. 31, 2022	322.9	322.9
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	85.4				85.4
Other comprehensive income, net	4.1			4.1
Issuance of common stock (in shares)		3.3
Issuance of common stock	31.1		31.1
Repurchase and retirement of common stock (in shares)		(4.8)
Repurchase and retirement of common stock	(151.3)		(60.2)		(91.1)
Share-based compensation expense	61.4		61.4
Payments of cash dividends	$ (70.6)		(70.6)
Balance (in shares) at Mar. 31, 2023	321.4	321.4
Balance at Mar. 31, 2023	$ 4,435.2		$ 6,808.1	$ 8.3	$ (2,381.2)