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Compensation Plans and Post-Employment Benefits - Fair Value of Plan Assets (Details) - USD ($) $ in Millions	Nov. 30, 2020	Nov. 30, 2019
Equities
Defined Benefit Plan Disclosure [Line Items]
Plan investment assets, at fair value	$ 55	$ 153
U.K. government fixed interest bonds (gilts)
Defined Benefit Plan Disclosure [Line Items]
Plan investment assets, at fair value	$ 270	$ 159

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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