Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2025

Goodwill and Other Intangible Assets [Abstract]

Goodwill

The balance of goodwill by reporting unit and the activity occurring in the past two fiscal years is as follows:

		Consumer &		Engineered
(in millions of dollars)		Specialties		Solutions			Consolidated
Balance at December 31, 2023	$	345.2	$	568.4		$	913.6
Change in goodwill relating to:
Foreign exchange translation		0.5		(0.3	)		0.2
Total Changes	$	0.5	$	(0.3	)	$	0.2
Balance at December 31, 2024	$	345.7	$	568.1		$	913.8
Change in goodwill relating to:
Foreign exchange translation		1.5		0.6			2.1
Total Changes	$	1.5	$	0.6		$	2.1
Balance at December 31, 2025	$	347.2	$	568.7		$	915.9

Acquired Intangible Assets Subject to Amortization

Acquired intangible assets subject to amortization as of December 31, 2025 and December 31, 2024 were as follows:

		December 31, 2025				December 31, 2024
		(in millions of dollars)				(in millions of dollars)
	Weighted Average		Gross				Gross
	Useful Life		Carrying		Accumulated		Carrying		Accumulated
	(Years)		Amount		Amortization		Amount		Amortization
Tradenames	34	$	221.4	$	67.6	$	221.5	$	63.0
Technology	20		18.8		15.5		18.8		15.1
Patents and trademarks	19		6.4		6.4		6.4		6.4
Customer relationships	21		80.4		28.8		77.5		21.6
	29	$	327.0	$	118.3	$	324.2	$	106.1