STOCKHOLDERS’ DEFICIT (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended	6 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025
Stockholders' Equity Note [Abstract]
Shares repurchased	1.2	2.4	4.2	2.5
Average price per share	$ 22.11	$ 71.68	$ 29.18	$ 71.98
Purchases of treasury stock	$ 26.6	$ 172.7	$ 124.4	$ 183.7
Accrued excise tax	$ 1.1	$ 1.0	1.1	1.0
Accrued excise tax payments			$ 3.9	$ 2.2

Amount of excise tax on share purchased under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

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Amount of excise tax payable on share purchased under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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