Fair Value Measurements, Derivative Instruments and Hedging Activities - Estimated Carrying and Fair Values of Financial Instrument Assets and Liabilities Not Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	Aug. 31, 2017	Nov. 30, 2016
Carrying Value
Assets
Long-term other assets	$ 133	$ 99
Total	133	99
Liabilities
Total	9,225	9,454
Carrying Value | Fixed Rate
Liabilities
Debt	5,755	5,436
Carrying Value | Floating Rate
Liabilities
Debt	3,470	4,018
Fair Value | Level 1
Assets
Long-term other assets	0	1
Total	0	1
Liabilities
Total	0	0
Fair Value | Level 1 | Fixed Rate
Liabilities
Debt	0	0
Fair Value | Level 1 | Floating Rate
Liabilities
Debt	0	0
Fair Value | Level 2
Assets
Long-term other assets	54	68
Total	54	68
Liabilities
Total	9,661	9,775
Fair Value | Level 2 | Fixed Rate
Liabilities
Debt	6,108	5,727
Fair Value | Level 2 | Floating Rate
Liabilities
Debt	3,553	4,048
Fair Value | Level 3
Assets
Long-term other assets	75	31
Total	75	31
Liabilities
Total	0	0
Fair Value | Level 3 | Fixed Rate
Liabilities
Debt	0	0
Fair Value | Level 3 | Floating Rate
Liabilities
Debt	$ 0	$ 0