XML 74 R64.htm IDEA: XBRL DOCUMENT v3.21.1
Accounting for Leases as a Lessor - Lessor Activity Included in Income Statement (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Apr. 30, 2021
Apr. 30, 2020
Apr. 30, 2021
Apr. 30, 2020
Leases [Abstract]        
Interest income $ 124 $ 115 $ 246 $ 228
Lease income - operating leases 595 608 1,199 1,233
Total lease income $ 719 $ 723 $ 1,445 $ 1,461