Acquisitions - Cost Expensed (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Aug. 31, 2017	Aug. 31, 2016	Aug. 31, 2017	Aug. 31, 2016
Business Acquisition [Line Items]
Other debt costs	$ 15.4	$ 0.0	$ 15.4	$ 0.0
RB Foods
Business Acquisition [Line Items]
Adjustments to inventory				20.0
Transaction expenses included in cost of goods	5.9		5.9
Transaction expenses included in other debt costs	15.4		15.4
Other transaction expenses	22.3		22.3
Integration expenses	2.2		2.2
Total	$ 45.8		$ 45.8	24.5
Other debt costs				$ 15.4