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Fair Value Measurements, Derivative Instruments and Hedging Activities and Financial Risk - Reconciliation of Changes in Carrying Amounts of Goodwill (Details) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jul. 31, 2018 | Nov. 30, 2018 | Nov. 30, 2017 | Nov. 30, 2016
Goodwill [Line Items] |  |  |  |
Goodwill and trademark impairment | $ 0 | $ 0 | $ 89,000,000 | $ 0
Goodwill [Roll Forward] |  |  |  |
Beginning Balance |  | 2,967,000,000 | 2,910,000,000 |
Impairment charge |  |  | (38,000,000) |
Foreign currency translation adjustment |  | (42,000,000) | 95,000,000 |
Ending Balance |  | 2,925,000,000 | 2,967,000,000 | 2,910,000,000
NAA Segment |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Beginning Balance |  | 1,898,000,000 | 1,934,000,000 |
Impairment charge |  |  | (38,000,000) |
Foreign currency translation adjustment |  | 0 | 2,000,000 |
Ending Balance |  | 1,898,000,000 | 1,898,000,000 | 1,934,000,000
EA Segment |  |  |  |
Goodwill [Line Items] |  |  |  |
Goodwill and trademark impairment |  |  | 89,000,000 |
Goodwill [Roll Forward] |  |  |  |
Beginning Balance |  | 1,069,000,000 | 976,000,000 |
Impairment charge |  |  | 0 |
Foreign currency translation adjustment |  | (42,000,000) | 93,000,000 |
Ending Balance |  | $ 1,027,000,000 | $ 1,069,000,000 | $ 976,000,000

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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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- Definition Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill. + References No definition available. + Details
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