Commitments and Contingencies - Summary of Financial Information for the Impact of Environmental Reserves and Recoveries (Details) - Reserve for Environmental Costs [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	May. 31, 2015	May. 31, 2014	May. 31, 2015	May. 31, 2014
Valuation and Qualifying Accounts Disclosure [Line Items]
Estimated Recoverable Amounts Under U.S. Government Contracts	$ 4.5	$ 2.6	$ 7.9	$ 7.7
Expense to Unaudited Condensed Consolidated Statement of Operations	2.1	0.5	3.7	2.6
Total Environmental Reserve Adjustments	$ 6.6	$ 3.1	$ 11.6	$ 10.3