Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Nov. 30, 2018	Nov. 30, 2017	Nov. 30, 2016
Income Statement [Abstract]
Net Sales	$ 769.8	$ 783.1	$ 759.9
Cost of goods sold (exclusive of depreciation)	579.1	582.3	556.0
Gross profit	190.7	200.8	203.9
Selling, general, and administrative	104.2	117.1	118.5
Depreciation and amortization	30.2	27.9	30.6
Asset impairments	13.5	32.9	5.7
(Gain) Loss on asset sales	(0.9)	0.4	0.3
Restructuring and severance	3.5	5.7	11.1
Interest expense	19.3	21.5	24.7
Debt issuance costs write-off	0.8	0.0	2.9
Acquisition and integration related expense	4.1	0.3	0.9
Other (income) expense, net	1.5	(0.9)	(0.7)
Total Other Costs and Expenses	176.2	204.9	194.0
Income (loss) before income taxes	14.5	(4.1)	9.9
Income tax (expense) benefit	6.2	(83.7)	(10.3)
Net Income (loss)	$ 20.7	$ (87.8)	$ (0.4)
Income (Loss) Per Share—Basic and Diluted
Net income (loss) per share - Basic and Diluted	$ 0.46	$ (1.98)	$ (0.01)
Weighted average shares outstanding - Basic	44.6	44.4	44.0
Weighted average shares outstanding - Diluted	44.9	44.4	44.0