Fair Value Measurements, Derivative Instruments and Hedging Activities and Financial Risks - Reconciliation of Changes in Carrying Amounts of Goodwill (Details) $ in Millions	3 Months Ended
	Feb. 28, 2018 USD ($)
Goodwill [Roll Forward]
Beginning Balance	$ 2,967
Foreign currency translation adjustment	47
Ending Balance	3,014
NAA Segment
Goodwill [Roll Forward]
Beginning Balance	1,898
Foreign currency translation adjustment	0
Ending Balance	1,898
EA Segment
Goodwill [Roll Forward]
Beginning Balance	1,069
Foreign currency translation adjustment	47
Ending Balance	$ 1,115