INTEREST INCOME AND INTEREST EXPENSE (Tables)

6 Months Ended

Mar. 31, 2022

Interest Income (Expense), Net [Abstract]

Interest Income and Interest Expense

The following table details the components of interest income and interest expense.

	Three months ended March 31,				Six months ended March 31,
$ in millions	2022		2021		2022		2021
Interest income:
Cash and cash equivalents	$	3	$	2	$	6	$	6
Assets segregated for regulatory purposes and restricted cash	7		5		11		8
Available-for-sale securities	25		21		47		44
Brokerage client receivables	21		19		42		37
Bank loans, net of unearned income and deferred expenses	171		142		335		287
All other	15		11		26		21
Total interest income	$	242	$	200	$	467	$	403
Interest expense:
Bank deposits	$	5	$	6	$	11	$	12
Brokerage client payables	—		1		1		2
Other borrowings	4		5		9		10
Senior notes payable	23		24		46		48
All other	6		1		8		3
Total interest expense	38		37		75		75
Net interest income	204		163		392		328
Bank loan (provision)/benefit for credit losses	(21)		32		(10)		18
Net interest income after bank loan (provision)/benefit for credit losses	$	183	$	195	$	382	$	346