ACCUMULATED OTHER COMPREHENSIVE INCOME/(LOSS) (Tables)

12 Months Ended

Sep. 30, 2021

Equity [Abstract]

Components of Accumulated Other Comprehensive Income, Net of Income Taxes

The following table presents the net change in AOCI as well as the changes, and the related tax effects, of each component of AOCI.

$ in millions	Net investment hedges		Currency translations		Subtotal: net investment hedges and currency translations		Available-for-sale securities		Cash flow hedges		Total
Year ended September 30, 2021
AOCI as of beginning of year	$	115	$	(140)	$	(25)	$	89	$	(53)	$	11
OCI:
OCI before reclassifications and taxes	(44)		48		4		(119)		19		(96)
Amounts reclassified from AOCI, before tax	—		2		2		(7)		15		10
Pre-tax net OCI	(44)		50		6		(126)		34		(86)
Income tax effect	10		—		10		32		(8)		34
OCI for the year, net of tax	(34)		50		16		(94)		26		(52)
AOCI as of end of year	$	81	$	(90)	$	(9)	$	(5)	$	(27)	$	(41)
Year ended September 30, 2020
AOCI as of beginning of year	$	110	$	(135)	$	(25)	$	21	$	(19)	$	(23)
OCI:
OCI before reclassifications and taxes	7		(5)		2		94		(51)		45
Amounts reclassified from AOCI, before tax	—		—		—		(3)		5		2
Pre-tax net OCI	7		(5)		2		91		(46)		47
Income tax effect	(2)		—		(2)		(23)		12		(13)
OCI for the year, net of tax	5		(5)		—		68		(34)		34
AOCI as of end of year	$	115	$	(140)	$	(25)	$	89	$	(53)	$	11
Year ended September 30, 2019
AOCI as of beginning of year	$	88	$	(111)	$	(23)	$	(46)	$	42	$	(27)
Cumulative effect of adoption of ASU 2016-01	—		—		—		(4)		—		(4)
OCI:
OCI before reclassifications and taxes	29		(24)		5		98		(79)		24
Amounts reclassified from AOCI, before tax	—		—		—		—		(5)		(5)
Pre-tax net OCI	29		(24)		5		98		(84)		19
Income tax effect	(7)		—		(7)		(27)		23		(11)
OCI for the year, net of tax	22		(24)		(2)		71		(61)		8
AOCI as of end of year	$	110	$	(135)	$	(25)	$	21	$	(19)	$	(23)