CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDER'S EQUITY - USD ($) shares in Thousands, $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Previously Reported	Common Stock [Member]	Common Stock [Member] Previously Reported	Additional Paid-in Capital	Retained Earnings [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment	Retained Earnings [Member] Previously Reported	AOCI Attributable to Parent [Member]	AOCI Attributable to Parent [Member] Previously Reported	Noncontrolling Interest [Member]	Noncontrolling Interest [Member] Previously Reported
Common stock beginning balance (in shares) at Dec. 31, 2022				82,700	82,700
Total shareholders' equity beginning balance at Dec. 31, 2022	$ 2,270.3	$ 12.9	$ 2,257.4	$ 82.7	$ 82.7		$ 2,522.6	$ 12.9	$ 2,509.7	$ (344.3)	$ (344.3)	$ 9.3	$ 9.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	415.5			$ 0.0			412.2			0.0		3.3
Activity from stock incentive plans (in shares)				200
Activity from stock incentive plans	20.8			$ 0.2			20.6			0.0		0.0
Share repurchases				(700)
Share repurchases	(60.5)			$ (0.7)			(59.8)			0.0		0.0
Shares withheld related to net share settlement of stock incentive plans (in shares)				(100)
Shares withheld related to net share settlement of stock incentive plans	7.2			$ 0.1			7.1			0.0		0.0
Dividends declared	(95.9)			0.0			(95.9)			0.0		0.0
Dividend to noncontrolling interest	(1.7)			0.0			0.0			0.0		(1.7)
Net change in postretirement benefit plans, net of tax impacts of $(1.2), $(1.5), and $1.7, respectively	(5.2)									(5.2)
Net foreign currency translation adjustment	17.6			$ 0.0			0.0			17.6		0.0
Common stock ending balance (in shares) at Dec. 31, 2023				82,100
Total shareholders' equity ending balance at Dec. 31, 2023	2,553.7			$ 82.1			2,792.6			(331.9)		10.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	523.3			$ 0.0			519.9			0.0		3.4
Activity from stock incentive plans (in shares)				300
Activity from stock incentive plans	26.4			$ 0.3			26.1			0.0		0.0
Share repurchases				(800)
Share repurchases	(104.8)			$ (0.8)			(104.0)			0.0		0.0
Shares withheld related to net share settlement of stock incentive plans (in shares)				(100)
Shares withheld related to net share settlement of stock incentive plans	14.2			$ 0.1			14.1			0.0		0.0
Dividends declared	(104.8)			0.0			(104.8)			0.0		0.0
Dividend to noncontrolling interest	(2.3)			0.0			0.0			0.0		(2.3)
Acquisition of noncontrolling interest	(5.0)						(0.1)					(4.9)
Net change in postretirement benefit plans, net of tax impacts of $(1.2), $(1.5), and $1.7, respectively	4.8									4.8
Net foreign currency translation adjustment	(91.2)			0.0			0.0			(91.2)		0.0
Other	$ (0.1)			$ 0.0			0.0			0.0		(0.1)
Common stock ending balance (in shares) at Dec. 31, 2024	81,500			81,500
Total shareholders' equity ending balance at Dec. 31, 2024	$ 2,785.8		$ 2,769.6	$ 81.5			3,115.6			(418.3)		7.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 491.3			$ 0.0			488.0			0.0		3.3
Shares issued (in shares)	8,050			8,100
Shares issued	$ 1,314.9			$ 8.1		$ 1,305.5	1.3			0.0		0.0
Activity from stock incentive plans (in shares)				200
Activity from stock incentive plans	36.7			$ 0.2		8.4	28.1			0.0		0.0
Share repurchases				(3,800)
Share repurchases	(525.0)			$ (3.8)			(521.2)			0.0		0.0
Shares withheld related to net share settlement of stock incentive plans (in shares)				(100)
Shares withheld related to net share settlement of stock incentive plans	13.8			$ 0.1			13.7			0.0		0.0
Dividends declared	(111.0)			0.0			(111.0)			0.0		0.0
Dividend to noncontrolling interest	(3.3)			0.0			0.0			0.0		(3.3)
Net change in postretirement benefit plans, net of tax impacts of $(1.2), $(1.5), and $1.7, respectively	(3.2)									(3.2)
Net foreign currency translation adjustment	119.0			0.0			0.0			119.0		0.0
Other	$ (0.1)			$ 0.0			0.0			0.0		(0.1)
Common stock ending balance (in shares) at Dec. 31, 2025	85,900			85,900
Total shareholders' equity ending balance at Dec. 31, 2025	$ 4,091.3			$ 85.9		$ 1,313.9	$ 2,987.1			$ (302.5)		$ 6.9