Consolidated Statements of Operations (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Income Statement [Abstract]
Net service revenues	$ 626.7	$ 655.9
Cost of services provided	492.9	508.3
Gross profit	133.8	147.6
Selling, general and administrative expense	129.9	137.6
Amortization expense	10.1	11.9
(Loss) income from operations	(6.2)	(1.9)
Other (income)	(1.2)	(0.7)
Interest expense	17.1	23.2
(Loss) before income taxes	(22.1)	(24.4)
Income tax (benefit)	(5.7)	(5.5)
Net (loss)	(16.4)	(18.9)
Less: dividends on Series A convertible preferred shares	8.9	0.0
Net (loss) attributable to common stockholders	$ (25.3)	$ (18.9)
(Loss) per share:
Basic (loss) per share	$ (0.27)	$ (0.2)
Diluted (loss) per share	$ (0.27)	$ (0.2)