Commitments and Contingencies - Summary of Pre-Close Environmental Costs (Details) $ in Millions	6 Months Ended
	May. 31, 2015 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Pre-Close Environmental Costs	$ 20.0
Amount spent through May 31, 2015	(17.9)
Amount included as a component of reserves for environmental remediation costs in the unaudited condensed consolidated balance sheet as of May 31, 2015	(2.1)
Remaining Pre-Close Environmental Costs	$ 0.0