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Finance Receivables - Schedule of Finance Revenues (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Apr. 30, 2017
Apr. 30, 2016
Apr. 30, 2017
Apr. 30, 2016
Finance Revenues [Line Items]        
Retail notes and finance leases revenue $ 10 $ 9 $ 19 $ 19
Gross finance revenues 56 58 110 117
Less: Intercompany revenues 23 25 43 49
Finance revenues 33 33 67 68
Financing Receivable [Member]        
Finance Revenues [Line Items]        
Operating lease revenue 16 16 33 32
Wholesale Portfolio [Member] | Notes Receivable [Member]        
Finance Revenues [Line Items]        
Interest Income, Operating 24 26 47 52
Retail And Wholesale Portfolios [Member]        
Finance Revenues [Line Items]        
Interest Income, Operating $ 6 $ 7 $ 11 $ 14