Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets (Schedule of Intangible Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2014
Finite-lived intangible assets
Finite-lived intangible assets, Gross Carrying Amount	$ 74.2	$ 74.7
Finite-lived intangible assets, Accumulated Amortization	$ 48.2	44.5
Finite-Lived Intangible Asset, Weighted Average Period before Next Renewal or Extension	14 years 7 months
Indefinite lived intangible assets
Total intangible assets	$ 104.9	105.4
Amortization expense for finite lived intangible assets	3.8	3.7	$ 5.3
Trademarks [Member]
Finite-lived intangible assets
Finite-lived intangible assets, Accumulated Amortization	0.0
Indefinite lived intangible assets
Indefinite-lived	30.7	30.7
Patents [Member]
Finite-lived intangible assets
Finite-lived intangible assets, Gross Carrying Amount	19.6	19.5
Finite-lived intangible assets, Accumulated Amortization	$ 17.5	16.7
Finite-Lived Intangible Asset, Weighted Average Period before Next Renewal or Extension	2 years 5 months
Trademarks [Member]
Finite-lived intangible assets
Finite-lived intangible assets, Gross Carrying Amount	$ 7.9	7.9
Finite-lived intangible assets, Accumulated Amortization	$ 7.1	7.1
Finite-Lived Intangible Asset, Weighted Average Period before Next Renewal or Extension	11 years 6 months
Technical Know-how [Member]
Finite-lived intangible assets
Finite-lived intangible assets, Gross Carrying Amount	$ 5.6	5.6
Finite-lived intangible assets, Accumulated Amortization	$ 4.5	4.3
Finite-Lived Intangible Asset, Weighted Average Period before Next Renewal or Extension	9 years 5 months
Customer Lists [Member]
Finite-lived intangible assets
Finite-lived intangible assets, Gross Carrying Amount	$ 32.9	32.9
Finite-lived intangible assets, Accumulated Amortization	$ 16.2	13.4
Finite-Lived Intangible Asset, Weighted Average Period before Next Renewal or Extension	6 years 7 months
Land use rights [Member]
Finite-lived intangible assets
Finite-lived intangible assets, Gross Carrying Amount	$ 6.4	6.9
Finite-lived intangible assets, Accumulated Amortization	$ 1.1	1.1
Finite-Lived Intangible Asset, Weighted Average Period before Next Renewal or Extension	52 years 9 months
Other Intangible Assets [Member]
Finite-lived intangible assets
Finite-lived intangible assets, Gross Carrying Amount	$ 1.8	1.9
Finite-lived intangible assets, Accumulated Amortization	$ 1.8	$ 1.9
Finite-Lived Intangible Asset, Weighted Average Period before Next Renewal or Extension	0 years