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Unsecured Debt - Schedule of Annual Maturities of Debt (Details) - USD ($)
$ in Millions
Nov. 30, 2017
Nov. 30, 2016
Debt Disclosure [Abstract]    
2018 $ 2,202  
2019 2,109  
2020 1,315  
2021 1,148  
2022 1,034  
Thereafter 1,438  
Total Debt $ 9,246 $ 9,454