(Loss) Per Share of Common Stock - Reconciliation of Numerator and Denominator for Basic and Diluted Earnings (loss) Per Share Calculation (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
		Dec. 31, 2022	Dec. 31, 2021
Earnings Per Share [Abstract]
Net (loss) available to common stockholders		$ (18.9)	$ (12.8)
Weighted average number of common shares outstanding – basic		93,252,000	105,259,000
Basic (loss) per share		$ (0.20)	$ (0.12)
Diluted (loss) per share		$ (0.20)	$ (0.12)
Weighted average number of anti-dilutive options and restricted stock	[1]	5,321,000	4,026,000

[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