INTEREST INCOME AND INTEREST EXPENSE (Tables)

9 Months Ended

Jun. 30, 2020

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 June 30,				Nine months ended June 30,
$ in millions	2020		2019		2020		2019
Interest income:
Assets segregated pursuant to regulations	$	3	$	14	$	25	$	46
Trading instruments	4		7		17		20
Available-for-sale securities	23		18		60		51
Margin loans	18		30		66		93
Bank loans, net of unearned income and deferred expenses	157		221		561		655
Loans to financial advisors	5		5		15		14
Corporate cash and all other	7		26		55		82
Total interest income	$	217	$	321	$	799	$	961
Interest expense:
Bank deposits	$	7	$	33	$	35	$	105
Trading instruments sold but not yet purchased	1		2		3		6
Brokerage client payables	3		5		9		16
Other borrowings	5		5		15		16
Senior notes payable	24		19		61		55
Other	2		9		13		23
Total interest expense	42		73		136		221
Net interest income	175		248		663		740
Bank loan loss (provision)/benefit	(81)		5		(188)		(16)
Net interest income after bank loan loss (provision)/benefit	$	94	$	253	$	475	$	724