Consolidated Statements of Operations (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Income Statement [Abstract]
Net service revenues	$ 599.2	$ 626.7
Cost of services provided	472.4	492.9
Gross profit	126.8	133.8
Selling, general and administrative expense	119.3	129.9
Amortization expense	8.1	10.1
(Loss) from operations	(0.6)	(6.2)
Other (income)	(0.2)	(1.2)
Interest expense, net	14.2	17.1
(Loss) before income taxes	(14.6)	(22.1)
Income tax (benefit)	(4.2)	(5.7)
Net (loss)	(10.4)	(16.4)
Less: dividends on Series A convertible preferred shares	9.0	8.9
Net (loss) attributable to common stockholders	$ (19.4)	$ (25.3)
(Loss) per share:
Basic (loss) per share	$ (0.2)	$ (0.27)
Diluted (loss) per share	$ (0.2)	$ (0.27)