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CONTINGENCIES AND CLAIMS - other contingencies - Accrued debt settlement (Details) - USD ($) $ in Millions		3 Months Ended
	Dec. 18, 2023	Dec. 31, 2023	Sep. 30, 2023
Other Commitments [Line Items]
Settlement cost			$ 18
Liabilities reclassified	$ 18
Non-convertible Secured Promissory Note [Member]
Other Commitments [Line Items]
Principal amount	50
Proceeds from financing	32
Original issue discount	$ 18		18
Settlement cost			$ 18
Liabilities reclassified		$ 18

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The amount of original issue discount on debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Carrying amount of reserve for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs, which is expected to be paid within one year of the date of the statement of financial position.

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The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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