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OTHER ASSETS (Details) - USD ($)
$ in Millions
Jun. 30, 2022
Sep. 30, 2021
Prepaid Expense and Other Assets [Abstract]    
Investments in company-owned life insurance policies $ 964 $ 952
Property and equipment, net 507 499
Lease ROU asset 476 446
Prepaid expenses 171 127
Investments in FHLB and FRB stock 94 72
All other 179 161
Total other assets $ 2,391 $ 2,257