Financial Instruments (Carrying Amount And Fair Value Of Financial Instruments) (Details) - USD ($) $ in Millions	Nov. 30, 2018	Nov. 30, 2017
Derivative [Line Items]
Long-term investments, Carrying amount	$ 120.8	$ 127.0
Long-term investments, Fair value	120.8	127.0
Long-term debt, Carrying amount	4,136.4	4,769.5
Long-term debt, Fair value	4,039.4	4,858.5
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	4.4	12.7
Other Accrued Liabilities [Member] | Interest Rate Contracts [Member]
Derivative [Line Items]
Interest rate derivatives	6.4	2.5
Other Accrued Liabilities [Member] | Foreign Exchange Contracts [Member]
Derivative [Line Items]
Foreign Currency Fair Value Hedge Derivative at Fair Value, Net	6.4	4.7
Fair Value, Measurements, Recurring [Member]
Derivative [Line Items]
Interest rate derivatives	6.4	2.5
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Derivative [Line Items]
Long-term debt, Carrying amount	3,172.7	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	866.7	1,243.3
Interest rate derivatives	$ 6.4	$ 2.5