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EQUITY - Share Repurchases (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021	Feb. 06, 2020
Accelerated Share Repurchases [Line Items]
Number of common shares repurchased (in shares)		1.1	0.6
Value of common shares repurchased to be held in treasury		$ 175.0	$ 113.1
Tax withholding	$ 9.3	$ 82.9	$ 16.3
February 6, 2020 Program
Accelerated Share Repurchases [Line Items]
Stock repurchase authorization				$ 750.0

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.

+ References + Details