CONSOLIDATED STATEMENTS OF NET INCOME - USD ($) shares in Millions, $ in Millions		12 Months Ended
		Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Statement [Abstract]
NET SALES	[1]	$ 1,764.3	$ 1,669.6	$ 1,628.1
Cost of sales		1,266.0	1,207.5	1,195.4
GROSS MARGIN		498.3	462.1	432.7
OPERATING EXPENSES AND INCOME
Selling, general and administrative expenses		184.3	187.6	174.7
Research, development and engineering expenses		40.7	40.6	42.5
Equity, royalty and interest income from investees		33.8	34.3	33.6
Other operating expense, net		8.1	2.0	0.7
OPERATING INCOME		299.0	266.2	248.4
Interest expense		33.4	40.6	25.8
Other income, net		0.6	9.2	3.8
INCOME BEFORE INCOME TAXES		266.2	234.8	226.4
Income tax expense		58.8	49.2	55.1
NET INCOME		$ 207.4	$ 185.6	$ 171.3
PER SHARE DATA:
Weighted-average shares for basic EPS (in shares)		82.2	83.2	83.3
Weighted-average shares for diluted EPS (in shares)		82.8	83.6	83.4
Basic earnings per share (in dollars per share)		$ 2.52	$ 2.23	$ 2.06
Diluted earnings per share (in dollars per share)		$ 2.50	$ 2.22	$ 2.05

[1] Includes sales to related parties of $57.1 million, $121.9 million and $390.8 million for the years ended December 31, 2025, 2024 and 2023, respectively.