Condensed Consolidated Statements of Changes in Stockholders' Equity (unaudited) - USD ($) $ in Millions	Total	Preferred stock	Common stock	Treasury stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive income (loss), net
Beginning balance at Dec. 31, 2024	$ 4,279.6	$ 0.0	$ 1.0	$ (1.4)	$ 1,512.5	$ 2,815.9	$ (48.4)
Increase (Decrease) in Stockholders' Equity
Cash dividends on common stock	(66.4)					(66.4)
Stock-based compensation	12.4				12.4
Repurchases of common stock from employee stock plans	(22.9)			(22.9)
Purchase of common stock	(30.0)			(30.0)
Shares issued under employee stock purchase plan	5.2				5.2
Net income	250.6					250.6
Other comprehensive (loss) income	23.6						23.6
Ending balance at Mar. 31, 2025	4,452.1	0.0	1.0	(54.3)	1,530.1	3,000.1	(24.8)
Beginning balance at Dec. 31, 2025	5,138.3	0.0	1.0	(1.5)	1,565.1	3,543.6	30.1
Increase (Decrease) in Stockholders' Equity
Cash dividends on common stock	(75.8)					(75.8)
Stock-based compensation	12.9				12.9
Repurchases of common stock from employee stock plans	(28.5)			(28.5)
Purchase of common stock	(45.1)			(45.1)
Shares issued under employee stock purchase plan	5.0				5.0
Net income	385.7					385.7
Other comprehensive (loss) income	(19.0)						(19.0)
Ending balance at Mar. 31, 2026	$ 5,373.5	$ 0.0	$ 1.0	$ (75.1)	$ 1,583.0	$ 3,853.5	$ 11.1