Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2023

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:

(millions of dollars)	Consumer & Specialties			Engineered Solutions			Consolidated
Balance at December 31, 2021	$	337.9		$	569.6		$	907.5
Change in goodwill relating to:
Concept Pet acquisition		9.2			—			9.2
Foreign exchange translation		(0.7	)		(1.2	)		(1.9	)
Total Changes	$	8.5		$	(1.2	)	$	7.3
Balance at December 31, 2022	$	346.4		$	568.4		$	914.8
Change in goodwill relating to:
Foreign exchange translation		(1.2	)		—			(1.2	)
Total Changes	$	(1.2	)	$	—		$	(1.2	)
Balance at December 31, 2023	$	345.2		$	568.4		$	913.6

Acquired Intangible Assets Subject to Amortization

Acquired intangible assets subject to amortization as of December 31, 2023 and December 31, 2022 were as follows:

			December 31, 2023				December 31, 2022
	Weighted Average Useful Life (Years)		Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Tradenames		34	$	221.5	$	59.1	$	221.2	$	52.2
Technology		13		18.8		14.2		18.8		12.6
Patents and trademarks		19		6.4		6.4		6.4		6.4
Customer relationships		21		79.0		15.0		78.4		11.7
		29	$	325.7	$	94.7	$	324.8	$	82.9