Income Taxes Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Nov. 30, 2015	Nov. 30, 2014	Nov. 30, 2016	Nov. 30, 2013
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, Recognition of Unrecognized Tax Benefits During Year, Amount	$ 0.6	$ 0.0
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	0.4	0.0	$ 0.0
Unrecognized Tax Benefits	$ 0.0	$ 0.6	$ 0.3	$ 0.8