XML 124 R106.htm IDEA: XBRL DOCUMENT v3.20.2
BANK DEPOSITS BANK DEPOSITS, Summary of Bank Deposits (Details) - USD ($)
$ in Millions
Sep. 30, 2020
Sep. 30, 2019
Bank deposits:    
Savings and money market accounts $ 25,604 $ 21,654
Certificates of deposit 1,017 605
NOW accounts 156 6
Demand deposits (non-interest-bearing) 24 16
Total bank deposits $ 26,801 $ 22,281
Weighted-average rate [Abstract]    
Savings and money market accounts, weighted-average rate (in hundredths) 0.01% 0.25%
Certificates of deposit, weighted-average rate (in hundredths) 1.94% 2.33%
NOW accounts, weighted-average rate (in hundredths) 1.92% 0.01%
Demand deposits (non-interest-bearing), weighted-average rate (in hundredths) 0.00% 0.00%
Total bank deposits, weighted-average rate (in hundredths) 0.09% 0.31%
Related party deposit liabilities $ 185 $ 163
Time deposit amount that exceeds FDIC insurance limit $ 23