Accumulated Other Comprehensive Income (Loss) - Rollforward (Details) - USD ($) $ in Millions	12 Months Ended
	Nov. 30, 2018	Nov. 30, 2017	Nov. 30, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive (loss) income	$ (125.3)	$ (138.5)	$ (135.9)
Other comprehensive income (loss) before reclassifications	(1.4)	15.5	(10.6)
Amounts reclassified from accumulated other comprehensive income (loss)	4.3	(2.3)	8.0
Accumulated other comprehensive (loss) income	(122.4)	(125.3)	(138.5)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive (loss) income	(23.1)	(29.6)	(30.2)
Other comprehensive income (loss) before reclassifications	(9.5)	12.8	(5.3)
Amounts reclassified from accumulated other comprehensive income (loss)	0.0	(6.3)	5.9
Accumulated other comprehensive (loss) income	(32.6)	(23.1)	(29.6)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive (loss) income	(102.2)	(108.9)	(105.7)
Other comprehensive income (loss) before reclassifications	8.1	2.7	(5.3)
Amounts reclassified from accumulated other comprehensive income (loss)	4.3	4.0	2.1
Accumulated other comprehensive (loss) income	$ (89.8)	$ (102.2)	$ (108.9)