Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	May 31, 2012	May 31, 2011	May 31, 2012	May 31, 2011
Condensed Consolidated Statements of Operations [Abstract]
Net Sales	$ 249.9	$ 229.9	$ 451.8	$ 439.7
Operating costs and expenses:
Cost of sales (exclusive of items shown separately below)	220.3	203.0	394.2	383.6
Selling, general and administrative	11.2	11.0	21.5	21.3
Depreciation and amortization	5.5	5.8	10.8	11.5
Other expense, net	2.6	1.7	4.5	2.9
Total operating costs and expenses	239.6	221.5	431.0	419.3
Operating income	10.3	8.4	20.8	20.4
Non-operating (income) expense:
Interest income	(0.1)	(0.3)	(0.3)	(0.6)
Interest expense	5.8	7.7	11.8	15.5
Total non-operating expense, net	5.7	7.4	11.5	14.9
Income from continuing operations before income taxes	4.6	1.0	9.3	5.5
Income tax provision	3.3	0.5	5.6	3.1
Income from continuing operations	1.3	0.5	3.7	2.4
Income (loss) from discontinued operations, net of income taxes	0.4	(0.5)	0.4	(1.2)
Net income	$ 1.7		$ 4.1	$ 1.2
Basic
Income per share from continuing operations	$ 0.02	$ 0.01	$ 0.06	$ 0.04
Income (loss) per share from discontinued operations, net of income taxes	$ 0.01	$ (0.01)	$ 0.01	$ (0.02)
Net income per share	$ 0.03		$ 0.07	$ 0.02
Diluted
Income per share from continuing operations	$ 0.02	$ 0.01	$ 0.06	$ 0.04
Income (loss) per share from discontinued operations, net of income taxes	$ 0.01	$ (0.01)	$ 0.01	$ (0.02)
Net income per share	$ 0.03		$ 0.07	$ 0.02
Weighted average shares of common stock outstanding	59.0	58.7	58.9	58.6
Weighted average shares of common stock outstanding, assuming dilution	59.0	58.7	58.9	58.6