Goodwill And Intangible Assets (Schedule Of Amortized And Non-Amortized Intangible Assets) (Details) - USD ($) $ in Millions	Nov. 30, 2018	Nov. 30, 2017	Nov. 30, 2016
Finite Lived and Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible assets, Gross carrying amount	$ 311.3	$ 329.1
Finite-lived intangible assets, Accumulated amortization	84.9	66.5
Goodwill	4,527.9	4,490.1
Indefinite-lived intangible assets, total	7,174.8	7,298.6
Total goodwill and intangible assets, Gross carrying amount	7,486.1	7,627.7
Total goodwill and intangible assets, Accumulated amortization	84.9	66.5
Goodwill [Member]
Finite Lived and Indefinite Lived Intangible Assets [Line Items]
Goodwill	4,527.9	4,490.1
Brand Names [Member]
Finite Lived and Indefinite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	2,646.9	2,808.5
Reckitt Benckiser's Food Division [Member]
Finite Lived and Indefinite Lived Intangible Assets [Line Items]
Indefinite-lived brand assets	2,320.0
Goodwill	2,648.5
Definite-lived intangible assets	110.0
Giotti [Member]
Finite Lived and Indefinite Lived Intangible Assets [Line Items]
Goodwill		80.5
Consumer Segment [Member]
Finite Lived and Indefinite Lived Intangible Assets [Line Items]
Goodwill	3,398.9	3,385.4	$ 1,608.3
Consumer Segment [Member] | Reckitt Benckiser's Food Division [Member]
Finite Lived and Indefinite Lived Intangible Assets [Line Items]
Goodwill	1,765.6
Flavor Solutions Segment [Member]
Finite Lived and Indefinite Lived Intangible Assets [Line Items]
Goodwill	1,129.0	$ 1,104.7	$ 163.1
Flavor Solutions Segment [Member] | Reckitt Benckiser's Food Division [Member]
Finite Lived and Indefinite Lived Intangible Assets [Line Items]
Goodwill	$ 882.9