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Fair Value Measurements, Derivative Instruments and Hedging Activities and Financial Risks - Estimated Fair Value and Basis of Valuation of Financial Instrument Assets And Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Millions
May 31, 2021
Nov. 30, 2020
Assets    
Short-term investments $ 2,204 $ 0
Liabilities    
Derivative financial instruments 8 10
Financial Instruments Measured at Fair Value on a Recurring Basis | Level 1    
Assets    
Restricted cash 150 179
Short-term investments 2,204  
Total 9,422 9,692
Financial Instruments Measured at Fair Value on a Recurring Basis | Level 1 | Money market funds    
Assets    
Cash and cash equivalents 7,067 9,513
Financial Instruments Measured at Fair Value on a Recurring Basis | Level 2    
Liabilities    
Total 8 10
Financial Instruments Measured at Fair Value on a Recurring Basis | Level 2 | Derivative financial instruments, liabilities    
Liabilities    
Derivative financial instruments $ 8 $ 10