Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Nov. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill [Table Text Block]

The following table summarizes the Company's goodwill, which all relates to the Specialty Solutions segment:

	Total			Specialty Solutions			Performance Materials
	(Dollars in millions)
Balance November 30, 2017	$	66.3		$	66.3		$	—
Acquisitions	6.4			6.4			—
Currency translation adjustment	(1.8		)	(1.8		)	—
Balance November 30, 2018	70.9			70.9			—
Currency translation adjustment	(1.5		)	(1.5		)	—
Balance November 30, 2019	$	69.4		$	69.4		$	—

Schedule of Intangible Assets

The following table summarizes the Company’s intangible assets:

	November 30, 2019				November 30, 2018				November 30, 2019
	Gross Carrying Amount		Accumulated Amortization / Impairment		Gross Carrying Amount		Accumulated Amortization / Impairment		Weighted Average Remaining Life
	(Dollars in millions)
Finite-lived intangible assets:
Patents	$	19.9	$	19.7	$	20.2	$	19.1	0.5
Trademarks	9.4		7.4		9.4		7.3		7.9
Technical know-how	6.9		5.0		6.9		4.7		6.1
Customer lists	33.8		23.0		34.6		20.7		3.8
Land use rights	5.7		0.9		5.8		0.8		15.9
Other	1.9		1.8		2.1		2.1		1.5
Sub-total	$	77.6	$	57.8	$	79.0	$	54.7	4.5
Indefinite lived intangible assets:
Trademarks	21.2		—		29.2		—		N/A
Total	$	98.8	$	57.8	$	108.2	$	54.7

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

The following table summarizes expected future annual amortization expense for the Company’s finite-lived intangible assets:

Year Ending November 30:	(Dollars in millions)
2020	$	3.9
2021	3.7
2022	3.7
2023	3.3
2024	0.9
Thereafter	4.3
Total	$	19.8