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Accounting for Leases as a Lessor - Summary of the Aging and Non-accrual Status of Gross Financing Receivables (Details) - USD ($)
$ in Millions
Apr. 30, 2025
Oct. 31, 2024
Financing Receivable, Past Due [Line Items]    
Financing receivables, net $ 9,602 $ 9,647
Gross financing receivables on non-accrual status [1] 187 214
Gross financing receivables 90 days past due and still accruing interest [1] 107 82
Unbilled    
Financing Receivable, Past Due [Line Items]    
Financing receivables, net 9,146 9,193
Current 1-30 days | Billed    
Financing Receivable, Past Due [Line Items]    
Financing receivables, net [2] 333 334
Past due 31-60 days | Billed    
Financing Receivable, Past Due [Line Items]    
Financing receivables, net [2] 25 29
Past due 61-90 days | Billed    
Financing Receivable, Past Due [Line Items]    
Financing receivables, net [2] 22 12
Past due > 90 days | Billed    
Financing Receivable, Past Due [Line Items]    
Financing receivables, net [2] $ 76 $ 79
[1] Includes billed operating lease receivables and billed and unbilled sales-type and direct-financing lease receivables.    
[2] Includes billed operating lease receivables and billed sales-type and direct-financing lease receivables.