Condensed Consolidated and Combined Statements of Changes in Equity (Unaudited) - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]
Beginning balance (in shares) at Dec. 31, 2024		165.0
Beginning balance at Dec. 31, 2024	$ 3,237.6	$ 1.7	$ 2,271.7	$ 1,108.6	$ (144.4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	360.7			360.7
Other Comprehensive Income (Loss), Net of Tax	99.5				99.5
Dividends, Common Stock	$ (33.3)			(33.3)
Share repurchases (in shares)	(1.0)	(1.0)
Share repurchases	$ (53.1)	$ (0.1)	(53.0)
Exercise of options, net of shares tendered for payment (in shares)		0.2
Stock Issued During Period, Value, Stock Options Exercised	3.6		3.6
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	0.0
Issuance of restricted shares, net of cancellations		0.5
Shares surrendered by employees to pay taxes (in shares)		(0.1)
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	(8.3)		(8.3)
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	9.4		9.4
Ending balance (in shares) at Mar. 31, 2025		164.6
Ending balance at Mar. 31, 2025	3,616.1	$ 1.6	2,223.4	1,436.0	(44.9)
Beginning balance (in shares) at Dec. 31, 2025		161.7
Beginning balance at Dec. 31, 2025	3,730.2	$ 1.6	2,072.3	1,687.5	(31.2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	142.4			142.4
Other Comprehensive Income (Loss), Net of Tax	3.2				3.2
Dividends, Common Stock	$ (34.2)			(34.2)
Share repurchases (in shares)	(0.4)	(0.4)
Share repurchases	$ (50.4)	$ 0.0	(50.4)
Exercise of options, net of shares tendered for payment (in shares)		0.1
Stock Issued During Period, Value, Stock Options Exercised	3.0		3.0
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	0.0
Issuance of restricted shares, net of cancellations		0.4
Shares surrendered by employees to pay taxes (in shares)		(0.1)
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	(14.1)		(14.1)
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	16.4		16.4
Ending balance (in shares) at Mar. 31, 2026		161.7
Ending balance at Mar. 31, 2026	$ 3,796.5	$ 1.6	$ 2,027.2	$ 1,795.7	$ (28.0)