Financial Instruments (Carrying Amount And Fair Value Of Financial Instruments) (Details) - USD ($) $ in Millions	Nov. 30, 2016	Nov. 30, 2015
Derivative [Line Items]
Long-term investments, Carrying amount	$ 116.2	$ 112.6
Long-term investments, Fair value	116.2	112.6
Long-term debt, Carrying amount	1,056.9	1,254.9
Long-term debt, Fair value	1,118.3	1,325.6
Other Current Assets [Member] | Interest Rate Contracts [Member]
Derivative [Line Items]
Interest Rate Derivatives, at Fair Value, Net	0.0	2.5
Other Current Assets [Member] | Foreign Exchange Contracts [Member]
Derivative [Line Items]
Foreign Currency Fair Value Hedge Derivative at Fair Value, Net	4.9	3.4
Other Accrued Liabilities [Member] | Interest Rate Contracts [Member]
Derivative [Line Items]
Interest rate derivatives	1.2	0.6
Other Accrued Liabilities [Member] | Foreign Exchange Contracts [Member]
Derivative [Line Items]
Foreign Currency Fair Value Hedge Derivative at Fair Value, Net	$ 5.4	$ 0.7