Financial Instruments (Carrying Amount And Fair Value Of Financial Instruments) (Details) - USD ($) $ in Millions	Nov. 30, 2017	Nov. 30, 2016
Derivative [Line Items]
Long-term investments, Carrying amount	$ 127.0	$ 116.2
Long-term investments, Fair value	127.0	116.2
Long-term debt, Carrying amount	4,769.5	1,056.9
Long-term debt, Fair value	4,858.5	1,118.3
Other Current Assets [Member] | Interest Rate Contracts [Member]
Derivative [Line Items]
Interest Rate Derivatives, at Fair Value, Net	0.0	0.0
Other Current Assets [Member] | Foreign Exchange Contracts [Member]
Derivative [Line Items]
Foreign Currency Fair Value Hedge Derivative at Fair Value, Net	12.7	4.9
Other Accrued Liabilities [Member] | Interest Rate Contracts [Member]
Derivative [Line Items]
Interest rate derivatives	2.5	1.2
Other Accrued Liabilities [Member] | Foreign Exchange Contracts [Member]
Derivative [Line Items]
Foreign Currency Fair Value Hedge Derivative at Fair Value, Net	4.7	5.4
Fair Value, Measurements, Recurring [Member]
Derivative [Line Items]
Interest rate derivatives	2.5	1.2
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Derivative [Line Items]
Long-term debt, Carrying amount	3,615.2
Interest rate derivatives	0.0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Derivative [Line Items]
Long-term debt, Carrying amount	1,243.3
Interest rate derivatives	$ 2.5	$ 1.2