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Fair Value Measurements, Derivative Instruments and Hedging Activities and Financial Risk - Offsetting Derivative Instruments (Details) - USD ($) $ in Millions | Nov. 30, 2018 | Nov. 30, 2017
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Fair Value Disclosures [Abstract] |  |
Derivative assets, gross amount | $ 0 | $ 15
Derivative assets, gross amounts offset in the Balance Sheet | 0 | 0
Derivative assets, net amount presented in balance sheet | 0 | 15
Derivative assets, gross amounts not offset in the balance sheet | 0 | (8)
Derivative assets, net amounts | 0 | 7
Derivative liabilities, gross amount | 29 | 161
Derivative liabilities, gross amounts offset in the Balance Sheet | 0 | 0
Derivative liabilities, net amount presented in balance sheet | 29 | 161
Derivative liabilities, gross amounts not offset in the balance sheet | 0 | (8)
Derivative liabilities, net amounts | $ 29 | $ 153

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