SHAREHOLDERS' EQUITY, Preferred Stock Dividends (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		6 Months Ended
	Apr. 03, 2023	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Dividends Payable [Line Items]
Dividends declared			$ 2		$ 4
Dividends paid			2		4
Series A Preferred Stock
Dividends Payable [Line Items]
Preferred stock dividend (as a percent)	6.75%
Dividends declared			$ 1		$ 2
Dividends declared (in usd per share)			$ 16.88		$ 33.76
Dividends paid			$ 1		$ 2
Dividends paid (in usd per share)			$ 16.88		$ 33.76
Series B Preferred Stock
Dividends Payable [Line Items]
Preferred stock dividend (as a percent)				6.375%
Dividends declared		$ 2	$ 1	$ 3	$ 2
Dividends declared (in usd per share)		$ 15.94	$ 15.94	$ 31.88	$ 31.88
Dividends paid		$ 2	$ 1	$ 3	$ 2
Dividends paid (in usd per share)		$ 15.94	$ 15.94	$ 31.88	$ 31.88