XML 105 R96.htm IDEA: XBRL DOCUMENT v3.22.2
BANK DEPOSITS, Summary of Bank Deposits (Details) - USD ($)
$ in Millions
Jun. 30, 2022
Sep. 30, 2021
Bank deposits:    
Savings and money market accounts $ 42,372 $ 31,415
Certificates of deposit 1,121 878
Interest-bearing checking accounts 5,448 164
Non-interest-bearing checking accounts 946 38
Total bank deposits $ 49,887 $ 32,495
Weighted-average rate [Abstract]    
Savings and money market accounts, weighted-average rate (in hundredths) 0.45% 0.01%
Certificates of deposit, weighted-average rate (in hundredths) 1.41% 1.87%
Interest-bearing checking accounts, weighted-average rate (in hundredths) 1.59% 1.84%
Non-interest-bearing checking accounts, weighted-average rate (in hundredths) 0.00% 0.00%
Total bank deposits, weighted-average rate (in hundredths) 0.60% 0.07%
Time deposit amount that exceeds FDIC insurance limit $ 151 $ 42