BANK DEPOSITS (Tables)

6 Months Ended

Mar. 31, 2022

Deposits [Abstract]

Summary of Bank Deposits

The following table presents a summary of bank deposits, as well as the weighted-average interest rates on such deposits. The calculation of the weighted-average rates were based on the actual deposit balances and rates at each respective period end.

	March 31, 2022				September 30, 2021
$ in millions	Balance		Weighted-average rate		Balance		Weighted-average rate
Savings and money market accounts	$	33,574	0.01	%	$	31,415	0.01	%
Certificates of deposit	701		1.83	%	878		1.87	%
NOW accounts	371		1.00	%	164		1.84	%
Demand deposits (non-interest-bearing)	39		—		38		—
Total bank deposits	$	34,685	0.06	%	$	32,495	0.07	%

Scheduled Maturities of Certificates of Deposit

The following table sets forth the scheduled maturities of certificates of deposit.

	March 31, 2022				September 30, 2021
$ in millions	Denominations greater than or equal to $100,000		Denominations less than $100,000		Denominations greater than or equal to $100,000		Denominations less than $100,000
Three months or less	$	50	$	30	$	22	$	87
Over three through six months	20		27		21		76
Over six through twelve months	35		112		32		54
Over one through two years	69		172		93		170
Over two through three years	7		151		37		166
Over three through four years	8		5		6		99
Over four through five years	9		6		9		6
Total certificates of deposit	$	198	$	503	$	220	$	658

Interest Expense on Deposits

Interest expense on deposits, excluding interest expense related to affiliate deposits, is summarized in the following table.

	Three months ended March 31,				Six months ended March 31,
$ in millions	2022		2021		2022		2021
Savings, money market, and NOW accounts	$	2	$	2	$	4	$	3
Certificates of deposit	3		4		7		9
Total interest expense on deposits	$	5	$	6	$	11	$	12