Condensed Consolidated Statements of Operations (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Feb. 28, 2014	Feb. 28, 2013
Income Statement [Abstract]
Net sales	$ 329.7	$ 243.7
Operating costs and expenses:
Cost of sales (exclusive of items shown separately below)	286.0	217.5
Selling, general and administrative	9.2	12.3
Depreciation and amortization	14.8	6.1
Other expense, net	7.4	5.9
Total operating costs and expenses	317.4	241.8
Operating income	12.3	1.9
Non-operating (income) and expense:
Interest income		(0.1)
Interest expense	12.4	11.2
Total non-operating expenses, net	12.4	11.1
Income (loss) from continuing operations before income taxes	(0.1)	(9.2)
Income tax provision	2.0	4.9
Loss from continuing operations	(2.1)	(14.1)
Income from discontinued operations, net of income taxes		0.1
Net loss	$ (2.1)	$ (14.0)
Basic and diluted:
Loss per share from continuing operations	$ (0.03)	$ (0.24)
Income per share from discontinued operations, net of income taxes
Net loss per share	$ (0.03)	$ (0.24)
Weighted average shares of common stock outstanding, basic and diluted	59.9	59.3