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Fair Value Measurements, Derivative Instruments and Hedging Activities - Estimated Fair Values of Derivative Financial Instruments and Location on Consolidated Balance Sheets (Parenthetical) (Detail)
 6 Months Ended
May 31, 2014
Cash Flow Hedging
  
Derivatives, Fair Value [Line Items]  
Derivative Maturity Month And Year 2015-02
Us Dollar [Member] | Interest rate swaps | Fair Value Hedging [Member]
  
Derivatives, Fair Value [Line Items]  
Derivative Maturity Month And Year 2016-02
Maximum | Interest rate swaps | Cash Flow Hedging
  
Derivatives, Fair Value [Line Items]  
Derivative Maturity Month And Year 2025-03
Fuel Derivatives Twenty Eighteen Maturity Jan Twenty Fourteen Transaction [Domain]
  
Derivatives, Fair Value [Line Items]  
Derivative Inception Month And Year 2014-01 [1]
Maturing In July Twenty Seventeen [Member] | Maximum | Net Investment Hedging [Member]
  
Derivatives, Fair Value [Line Items]  
Maturity Of Foreign Currency Derivatives Month And Year 2017-07
[1] Fuel derivatives mature evenly over each month within the above fiscal periods.