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, 2019	Nov. 30, 2018
Carrying Value
Assets
Long-term other assets	$ 182	$ 127
Total	182	127
Liabilities
Total	11,280	10,394
Carrying Value | Fixed rate debt
Liabilities
Debt	6,665	5,699
Carrying Value | Floating rate debt
Liabilities
Debt	4,615	4,695
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	29	30
Total	29	30
Liabilities
Total	11,574	10,526
Fair Value | Level 2 | Fixed rate debt
Liabilities
Debt	6,915	5,799
Fair Value | Level 2 | Floating rate debt
Liabilities
Debt	4,659	4,727
Fair Value | Level 3
Assets
Long-term other assets	151	95
Total	151	95
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