The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Goodwill And Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Nov. 30, 2018	Nov. 30, 2017	Nov. 30, 2016
Goodwill [Line Items]
Goodwill	$ 4,527.9	$ 4,490.1
Intangible asset amortization expense	$ 20.6	16.3	$ 11.3
Amortizable intangible assets average remaining life, in years	11 years
Consumer Segment [Member]
Goodwill [Line Items]
Goodwill	$ 3,398.9	3,385.4	1,608.3
Flavor Solutions Segment [Member]
Goodwill [Line Items]
Goodwill	1,129.0	1,104.7	$ 163.1
Reckitt Benckiser's Food Division [Member]
Goodwill [Line Items]
Goodwill	$ 2,648.5
Amortizable intangible assets average remaining life, in years	15 years
Reckitt Benckiser's Food Division [Member] \| Consumer Segment [Member]
Goodwill [Line Items]
Goodwill	$ 1,765.6
Reckitt Benckiser's Food Division [Member] \| Flavor Solutions Segment [Member]
Goodwill [Line Items]
Goodwill	$ 882.9
Giotti [Member]
Goodwill [Line Items]
Goodwill		$ 80.5