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:

	Total			Specialty Solutions			Performance Materials
	(Dollars in millions)
Balance November 30, 2016	$	80.2		$	60.6		$	19.6
Acquisitions	1.6			1.6			—
Impairment	(19.6		)	—			(19.6		)
Currency translation adjustment	4.1			4.1			—
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		$	—

Schedule of Intangible Assets

The following table summarizes the Company’s intangible assets:

	November 30, 2018				November 30, 2017				November 30, 2018
	Gross Carrying Amount		Accumulated Amortization / Impairment		Gross Carrying Amount		Accumulated Amortization / Impairment		Weighted Average Remaining Life
	(Dollars in millions)
Finite-lived intangible assets:
Patents	$	20.2	$	19.1	$	20.7	$	19.0	2.3
Trademarks	9.4		7.3		7.9		7.2		8.2
Technical know-how	6.9		4.7		6.0		4.6		9.4
Customer lists	34.6		20.7		34.4		18.5		3.5
Land use rights	5.8		0.8		6.1		0.7		50.0
Other	2.1		2.1		2.1		1.9		0.0
Sub-total	$	79.0	$	54.7	$	77.2	$	51.9	13.9
Indefinite lived intangible assets:
Trademarks	30.7		1.5		30.7		—		N/A
Total	$	109.7	$	56.2	$	107.9	$	51.9

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)
2019	$	5.1
2020	5.1
2021	4.6
2022	1.5
2023	0.8
Thereafter	7.2
Total	$	24.3