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Goodwill - Additional Disclosures (Details) - USD ($) $ in Millions	3 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Nov. 30, 2017	Nov. 30, 2016
Goodwill [Line Items]
Changes in preliminary purchase price allocation	$ 2.0
Goodwill	4,626.0	$ 1,857.6	$ 4,490.1
RB Foods
Goodwill [Line Items]
Changes in preliminary purchase price allocation	104.6
Goodwill	2,652.9
Consumer \| RB Foods [Member]
Goodwill [Line Items]
Changes in preliminary purchase price allocation	71.1
Flavor Solutions \| RB Foods [Member]
Goodwill [Line Items]
Changes in preliminary purchase price allocation	35.5
Flavor Solutions \| Giotti
Goodwill [Line Items]
Increases in goodwill from acquisitions		74.9
Consumer
Goodwill [Line Items]
Changes in preliminary purchase price allocation	71.1	(0.4)
Increases in goodwill from acquisitions	0.0	0.0
Goodwill	3,482.0	1,618.3	3,385.4	$ 1,608.3
Flavor Solutions
Goodwill [Line Items]
Changes in preliminary purchase price allocation	35.5	0.0
Increases in goodwill from acquisitions	0.0	74.9
Goodwill	$ 1,144.0	$ 239.3	$ 1,104.7	$ 163.1