Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	May 31, 2016	May 31, 2015	May 31, 2016	May 31, 2015	Feb. 29, 2016	Nov. 30, 2015	Feb. 28, 2015	Nov. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	$ (22.4)	$ (22.6)	$ (22.4)	$ (22.6)	$ (24.5)	$ (30.2)	$ (20.0)	$ (10.3)
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	(104.6)	(117.0)	(104.6)	(117.0)	(105.1)	(105.7)	(117.7)	(118.5)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(127.0)	(139.6)	(127.0)	(139.6)	$ (129.6)	$ (135.9)	$ (137.7)	$ (128.8)
Foreign currency translations, net of tax	2.1	(2.6)	7.8	(12.3)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	0.0	0.0	0.0	0.0
Other Comprehensive Income (Loss), Net of Tax	2.1	(2.6)	7.8	(12.3)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	0.0	0.0	0.0	0.0
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax [Abstract]	0.5	0.7	1.1	1.5
Other Comprehensive Income (Loss), Reclassification, Net of Tax	$ 0.5	$ 0.7	$ 1.1	$ 1.5