(Loss) Per Share of Common Stock - Reconciliation of Numerator and Denominator for Basic and Diluted (Loss) Earnings Per Share Calculation (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
		Dec. 31, 2024	Dec. 31, 2023
Earnings Per Share [Abstract]
Net Income (Loss)		$ (10.4)	$ (16.4)
Less: dividends on Series A convertible preferred shares		(9.0)	(8.9)
Less: Earnings allocated to Convertible Preferred Shares		0.0	0.0
Net (loss) available to common shareholders		$ (19.4)	$ (25.3)
Weighted average number of common shares outstanding - basic		95,166,000	93,986,000
Basic (loss) per share		$ (0.2)	$ (0.27)
Net (loss) available to common shareholders - diluted		$ (19.4)	$ (25.3)
Stock compensation awards		0	0
Weighted average number of common shares outstanding - diluted		95,166,000	93,986,000
Diluted (loss) per share		$ (0.2)	$ (0.27)
Weighted average number of anti-dilutive Series A convertible preferred shares, options and restricted stock(a)	[1]	58,942,000	59,434,000

[1] Weighted average number of anti-dilutive options is based upon the average closing price of the Company’s common stock on the NYSE for the period.