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EMPLOYEE BENEFIT PLANS (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Sep. 30, 2022
Other Postretirement Benefits Plan \| Retirement Income Plans \| UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Discount rate used for benefit obligation remeasurement		5.00%
Net unrealized loss in AOCI, net of tax		$ 126
Net unrealized loss in AOCI, before taxes		165
Net periodic benefit cost		5	$ 4
Retirement plan contributions		2	2
Other Postretirement Benefits Plan \| Retirement Income Plans \| UNITED STATES \| Forecast
Defined Benefit Plan Disclosure [Line Items]
One-time non-cash before tax settlement charge	$ 165
Postretirement Health Coverage \| Retirement Health Care
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost		$ 0	$ 0