INTEREST INCOME AND INTEREST EXPENSE (Tables)

6 Months Ended

Mar. 31, 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 March 31,						Six months ended March 31,
$ in millions	2020			2019			2020			2019
Interest income:
Assets segregated pursuant to regulations	$	11		$	17		$	22		$	32
Trading instruments	7			6			13			13
Available-for-sale securities	19			17			37			33
Margin loans	21			31			48			63
Bank loans, net of unearned income and deferred expenses	198			220			404			434
Loans to financial advisors	5			5			10			9
Corporate cash and all other	24			28			48			56
Total interest income	$	285		$	324		$	582		$	640
Interest expense:
Bank deposits	$	12		$	37		$	28		$	72
Trading instruments sold but not yet purchased	1			2			2			4
Brokerage client payables	3			5			6			11
Other borrowings	5			5			10			11
Senior notes payable	19			18			37			36
Other	3			8			11			14
Total interest expense	43			75			94			148
Net interest income	242			249			488			492
Bank loan loss provision	(109		)	(5		)	(107		)	(21		)
Net interest income after bank loan loss provision	$	133		$	244		$	381		$	471