Consolidated Statements of Shareholders' Equity - USD ($) shares in Millions, $ in Millions		Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance, shares at Nov. 30, 2016			45.1
Beginning Balance at Nov. 30, 2016		$ 109.8	$ 4.8	$ 341.0	$ (74.3)	$ (23.2)	$ (138.5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		(87.8)			(87.8)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax		6.5					6.5
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax		6.7					6.7
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition				2.5
Common stock issuance, shares			(0.3)
Stock Issued During Period, Value, New Issues		(2.4)		(0.1)		(2.3)
Ending Balance, shares at Nov. 30, 2017			44.8
Ending Balance at Nov. 30, 2017		38.2	$ 4.8	343.4	(159.2)	(25.5)	(125.3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect of New Accounting Principle in Period of Adoption		2.9
Net income (loss)		20.7			20.7
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax		(9.5)					(9.5)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax		12.4					12.4
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition		2.8		2.8
Stock Issued During Period, Shares, Other			0.1
Stock Issued During Period, Value, Other		(0.1)		(0.3)		0.2
Ending Balance, shares at Nov. 30, 2018			44.9
Ending Balance at Nov. 30, 2018		57.6	$ 4.8	345.9	(145.4)	(25.3)	(122.4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect of New Accounting Principle in Period of Adoption		(6.9)			(6.9)
Net income (loss)	[1]	(4.6)
Beginning Balance, shares at Nov. 30, 2018			44.9
Beginning Balance at Nov. 30, 2018		57.6	$ 4.8	345.9	(145.4)	(25.3)	(122.4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		(22.4)			(22.4)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax		13.6					13.6
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax		(30.0)					(30.0)
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition		3.1		3.1
Stock Issued During Period, Shares, Other			(0.1)
Stock Issued During Period, Value, Other		(0.5)		(0.4)		(0.1)
Ending Balance, shares at Nov. 30, 2019			44.8
Ending Balance at Nov. 30, 2019		20.9	$ 4.8	$ 348.6	(168.3)	$ (25.4)	$ (138.8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect of New Accounting Principle in Period of Adoption		(0.5)
Cumulative Effect of New Accounting Principle in Period of Adoption		$ (0.5)			$ (0.5)

[1] The sum of the quarterly earnings per share amounts may not equal the annual amount due to changes in the number of shares outstanding during the year.