Fair Value Measurements, Derivative Instruments and Hedging Activities and Financial Risks - Estimated Carrying and Fair Values of Financial Instrument Assets and Liabilities Not Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	May 31, 2020	Nov. 30, 2019
Carrying Value
Assets
Long-term other assets	$ 94	$ 181
Total	94	181
Liabilities
Total	21,422	11,634
Carrying Value | Fixed rate debt
Liabilities
Debt	13,061	7,438
Carrying Value | Floating rate debt
Liabilities
Debt	8,362	4,195
Fair Value | Level 1
Assets
Long-term other assets	0	0
Total	0	0
Liabilities
Total	0	0
Fair Value | Level 1 | Fixed rate debt
Liabilities
Debt	0	0
Fair Value | Level 1 | Floating rate debt
Liabilities
Debt	0	0
Fair Value | Level 2
Assets
Long-term other assets	30	31
Total	30	31
Liabilities
Total	20,013	12,030
Fair Value | Level 2 | Fixed rate debt
Liabilities
Debt	12,901	7,782
Fair Value | Level 2 | Floating rate debt
Liabilities
Debt	7,112	4,248
Fair Value | Level 3
Assets
Long-term other assets	62	149
Total	62	149
Liabilities
Total	0	0
Fair Value | Level 3 | Fixed rate debt
Liabilities
Debt	0	0
Fair Value | Level 3 | Floating rate debt
Liabilities
Debt	$ 0	$ 0