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Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2021

Goodwill and Other Intangible Assets [Abstract]

Goodwill

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

(millions of dollars)		Performance Materials				Specialty Minerals				Refractories				Consolidated
Balance at December 31, 2019		$	751.2			$	12.5			$	43.7			$	807.4
Change in goodwill relating to:
Foreign exchange translation			1.2				0.2				(0.3	)			1.1
Total Changes		$	1.2			$	0.2			$	(0.3	)		$	1.1
Balance at December 31, 2020		$	752.4			$	12.7			$	43.4			$	808.5
Change in goodwill relating to:
Normerica acquisition			104.5				—				—				104.5
Foreign exchange translation			(3.9	)			(0.1	)			(1.5	)			(5.5	)
Total Changes		$	100.6			$	(0.1	)		$	(1.5	)		$	99.0
Balance at December 31, 2021		$	853.0			$	12.6			$	41.9			$	907.5

Other Intangible Assets

Acquired intangible assets subject to amortization as of December 31, 2021 and December 31, 2020 were as follows:

						December 31, 2021								December 31, 2020
		Weighted Average Useful Life (Years)				Gross Carrying Amount				Accumulated Amortization				Gross Carrying Amount				Accumulated Amortization
Tradenames			34			$	221.6			$	44.9			$	203.9			$	38.6
Technology			13				18.8				11.2				18.8				9.6
Patents and trademarks			19				6.4				6.4				6.4				6.1
Customer relationships			21				75.2				7.9				26.9				5.9
			29			$	322.0			$	70.4			$	256.0			$	60.2

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- References

No definition available.

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- Definition

Tabular disclosure of the characteristics, including initial carrying value, residual amount, weighted average useful life, of finite-lived intangible assets acquired during the period by major class. A major class is composed of intangible assets that can be grouped together because they are similar, either by nature or by their use in the operations of the company.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

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- Definition

Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13854-109267

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