Fair Value Measurements, Derivative Instruments and Hedging Activities and Financial Risks - Reconciliation of Changes in Carrying Amounts of Goodwill (Details) $ in Millions	9 Months Ended
Aug. 31, 2019 USD ($)
Goodwill [Roll Forward]
At November 30, 2018	$ 2,925
Foreign currency translation adjustment	(39)
At August 31, 2019	2,886
NAA Segment
Goodwill [Roll Forward]
At November 30, 2018	1,898
Foreign currency translation adjustment	0
At August 31, 2019	1,898
EA Segment
Goodwill [Roll Forward]
At November 30, 2018	1,027
Foreign currency translation adjustment	(39)
At August 31, 2019	$ 988

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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e961-128460

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267

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Balance Type:	debit
Period Type:	duration