INTEREST INCOME AND INTEREST EXPENSE

12 Months Ended

Sep. 30, 2023

Interest Income (Expense), Net [Abstract]

INTEREST INCOME AND INTEREST EXPENSE

INTEREST INCOME AND INTEREST EXPENSE

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

	Year ended September 30,
$ in millions	2023		2022		2021
Interest income:
Cash and cash equivalents	$	358	$	48	$	12
Assets segregated for regulatory purposes and restricted cash	197		96		15
Trading assets — debt securities	57		27		13
Available-for-sale securities	219		136		85
Brokerage client receivables	170		100		77
Bank loans, net	2,671		1,051		593
All other	76		50		28
Total interest income	3,748		1,508		823
Interest expense:
Bank deposits	1,080		131		23
Trading liabilities — debt securities	36		12		2
Brokerage client payables	78		24		3
Other borrowings	37		21		19
Senior notes payable	92		93		96
All other	50		24		7
Total interest expense	1,373		305		150
Net interest income	2,375		1,203		673
Bank loan (provision)/benefit for credit losses	(132)		(100)		32
Net interest income after bank loan (provision)/benefit for credit losses	$	2,243	$	1,103	$	705

Interest expense related to bank deposits in the preceding table excludes interest expense associated with affiliate deposits, which has been eliminated in consolidation.