Fair Value Measurements, Derivative Instruments and Hedging Activities and Financial Risks - Reconciliation of Changes in Carrying Amounts of Goodwill (Details) - USD ($) $ in Millions	3 Months Ended
Feb. 29, 2020	Feb. 28, 2019
Goodwill [Roll Forward]
At November 30, 2019	$ 2,912
Impairment charges	(731)	$ 0
Foreign currency translation adjustment	(5)
At February 29, 2020	2,176
NAA Segment
Goodwill [Roll Forward]
At November 30, 2019	1,898
Impairment charges	(300)
Foreign currency translation adjustment	0
At February 29, 2020	1,598
EA Segment
Goodwill [Roll Forward]
At November 30, 2019	1,014
Impairment charges	(431)
Foreign currency translation adjustment	(5)
At February 29, 2020	$ 578

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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