INCOME TAXES, Aggregate Changes in Balances for Uncertain Tax Positions (Details) - USD ($) $ in Millions	12 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Changes in the liability for unrecognized tax benefits [Roll Forward]
Uncertain tax positions beginning of year	$ 48	$ 41	$ 43
Increases for tax positions related to the current year	15	6	5
Increases for tax positions related to prior years	6	9	4
Decreases for tax positions related to prior years	0	(2)	(2)
Decreases due to statute of limitations expirations	(16)	(6)	(8)
Decreases related to settlements	(6)	0	(1)
Uncertain tax positions end of year	$ 47	$ 48	$ 41

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 217
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

+ References

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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