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	Aug. 31, 2021	Nov. 30, 2020
Assets
Short-term investments	$ 647	$ 0
Liabilities
Derivative financial instruments	7	10
Financial Instruments Measured at Fair Value on a Recurring Basis | Level 1
Assets
Restricted cash	178	179
Short-term investments	647	0
Total	7,975	9,692
Liabilities
Total	0	0
Financial Instruments Measured at Fair Value on a Recurring Basis | Level 1 | Money market funds
Assets
Cash and cash equivalents	7,151	9,513
Financial Instruments Measured at Fair Value on a Recurring Basis | Level 1 | Derivative financial instruments, liabilities
Liabilities
Derivative financial instruments	0	0
Financial Instruments Measured at Fair Value on a Recurring Basis | Level 2
Assets
Restricted cash	0	0
Short-term investments	0	0
Total	0	0
Liabilities
Total	7	10
Financial Instruments Measured at Fair Value on a Recurring Basis | Level 2 | Money market funds
Assets
Cash and cash equivalents	0	0
Financial Instruments Measured at Fair Value on a Recurring Basis | Level 2 | Derivative financial instruments, liabilities
Liabilities
Derivative financial instruments	7	10
Financial Instruments Measured at Fair Value on a Recurring Basis | Level 3
Assets
Restricted cash	0	0
Short-term investments	0	0
Total	0	0
Liabilities
Total	0	0
Financial Instruments Measured at Fair Value on a Recurring Basis | Level 3 | Money market funds
Assets
Cash and cash equivalents	0	0
Financial Instruments Measured at Fair Value on a Recurring Basis | Level 3 | Derivative financial instruments, liabilities
Liabilities
Derivative financial instruments	$ 0	$ 0