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Goodwill - Additional Disclosures (Details) - USD ($) $ in Millions	6 Months Ended
	May 31, 2018	May 31, 2017	Nov. 30, 2017	Nov. 30, 2016
Goodwill [Line Items]
Changes in preliminary purchase price allocation	$ 2.8
Goodwill	4,577.2	$ 1,894.8	$ 4,490.1
RB Foods
Goodwill [Line Items]
Changes in preliminary purchase price allocation	104.6
Goodwill	2,653.7
Consumer \| RB Foods [Member]
Goodwill [Line Items]
Changes in preliminary purchase price allocation	71.7
Flavor Solutions \| RB Foods [Member]
Goodwill [Line Items]
Changes in preliminary purchase price allocation	35.7
Flavor Solutions \| Giotti
Goodwill [Line Items]
Increases in goodwill from acquisitions		74.9
Consumer
Goodwill [Line Items]
Changes in preliminary purchase price allocation	71.7	(7.7)
Increases in goodwill from acquisitions	0.0	0.0
Goodwill	3,439.4	1,649.7	3,385.4	$ 1,608.3
Flavor Solutions
Goodwill [Line Items]
Changes in preliminary purchase price allocation	35.7	0.0
Increases in goodwill from acquisitions	0.0	74.9
Goodwill	$ 1,137.8	$ 245.1	$ 1,104.7	$ 163.1