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Financial Instruments (Carrying Amount And Fair Value Of Financial Instruments) (Details) (USD $)
In Millions, unless otherwise specified
Nov. 30, 2013
Nov. 30, 2012
Derivative [Line Items]    
Long-term investments, Carrying amount $ 103.4 $ 86.1
Long-term investments, Fair value 103.4 86.1
Long-term debt, Carrying amount 1,021.5 1,031.5
Long-term debt, Fair value $ 1,102.4 $ 1,168.5