Consolidated Statements of Stockholders' Equity - USD ($) shares in Millions, $ in Millions		Total	Common Stock	Additional Paid-In Capital	Accumulated other comprehensive loss	Retained Earnings	Treasury Shares
Balance at beginning (in shares) at Dec. 31, 2022			50.9
Balance at the beginning of the period at Dec. 31, 2022		$ 3,024.4	$ 78.7	$ 512.6	$ (157.8)	$ 5,027.1	$ (2,436.2)
Balance at beginning (in shares) at Dec. 31, 2022							27.5
Increase (Decrease) in Shareholders' Equity
Net income		767.4				767.4
Other comprehensive income		46.7			46.7
Dividends		(160.5)				(160.5)
Repurchase of common stock (in shares)	[1]		(3.5)				3.5
Repurchases of common stock	[1]	(908.3)					$ (908.3)
Stock-based compensation (in shares)	[2]		0.3				0.1
Stock-based compensation	[2]	59.3		41.2			$ 18.1
Balance at ending (in shares) at Dec. 31, 2023			47.7
Balance at the end of the period at Dec. 31, 2023		2,829.0	$ 78.7	553.8	(111.1)	5,634.0	$ (3,326.4)
Balance at ending (in shares) at Dec. 31, 2023							30.9
Increase (Decrease) in Shareholders' Equity
Net income		1,311.8				1,311.8
Other comprehensive income		1.0			1.0
Dividends		(172.7)				(172.7)
Repurchase of common stock (in shares)	[1]		(3.9)				3.9
Repurchases of common stock	[1]	(1,599.5)					$ (1,599.5)
Stock-based compensation (in shares)	[2]		0.6				0.6
Stock-based compensation	[2]	$ 93.7		35.2			$ 58.5
Balance at ending (in shares) at Dec. 31, 2024		44.4	44.4
Balance at the end of the period at Dec. 31, 2024		$ 2,463.3	$ 78.7	589.0	(110.1)	6,773.1	$ (4,867.4)
Balance at ending (in shares) at Dec. 31, 2024		34.2					34.2
Increase (Decrease) in Shareholders' Equity
Net income		$ 740.7				740.7
Other comprehensive income		40.1			40.1
Dividends		(181.3)				(181.3)
Repurchase of common stock (in shares)	[1]		(3.7)				3.7
Repurchases of common stock	[1]	(1,312.0)					$ (1,312.0)
Stock-based compensation (in shares)	[2]		0.3				0.3
Stock-based compensation	[2]	$ 44.6		14.5			$ 30.1
Balance at ending (in shares) at Dec. 31, 2025		41.0	41.0
Balance at the end of the period at Dec. 31, 2025		$ 1,795.4	$ 78.7	$ 603.5	$ (70.0)	$ 7,332.5	$ (6,149.3)
Balance at ending (in shares) at Dec. 31, 2025		37.6					37.6

[1] Repurchases of common stock include excise taxes on share repurchases.

[2] Stock-based compensation includes stock options exercised net of tax, restricted and performance shares vested, and shares issued and deferred associated with deferred compensation.