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Fair Value Measurements, Derivative Instruments and Hedging Activities - Estimated Fair Value and Basis of Valuation of Financial Instrument Assets And Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Millions
Aug. 31, 2017
Nov. 30, 2016
Assets    
Derivative financial instruments $ 22 $ 15
Liabilities    
Derivative financial instruments 265 434
Financial Instruments Measured at Fair Value on a Recurring Basis | Level 1    
Assets    
Restricted cash 31 60
Total 611 756
Financial Instruments Measured at Fair Value on a Recurring Basis | Level 1 | Money market funds    
Assets    
Cash and cash equivalents 489 603
Financial Instruments Measured at Fair Value on a Recurring Basis | Level 1 | Marketable securities held in rabbi trusts    
Assets    
Investments 91 93
Financial Instruments Measured at Fair Value on a Recurring Basis | Level 2    
Assets    
Total 26 19
Liabilities    
Total 265 434
Financial Instruments Measured at Fair Value on a Recurring Basis | Level 2 | Marketable securities held in rabbi trusts    
Assets    
Investments 4 4
Financial Instruments Measured at Fair Value on a Recurring Basis | Level 2 | Derivative financial instruments    
Assets    
Derivative financial instruments 22 15
Financial Instruments Measured at Fair Value on a Recurring Basis | Level 2 | Derivative financial instruments    
Liabilities    
Derivative financial instruments $ 265 434
Financial Instruments Measured at Fair Value on a Recurring Basis | Level 3    
Assets    
Total   21
Financial Instruments Measured at Fair Value on a Recurring Basis | Level 3 | Short-term investments    
Assets    
Investments   $ 21