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SHAREHOLDERS' EQUITY, Share Repurchases Narrative (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2022
Equity [Abstract]
Share repurchases, authorized amount				$ 1,500
Shares repurchased (in shares)	8,350	1,700	1,500
Shares repurchased	$ 788
Shares repurchased (in usd per share)	$ 94.30
Share repurchases, remaining authorized amount	$ 750
Excise tax on share repurchases	$ 5

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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- Definition

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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