CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Noncontrolling Interest
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance at Sep. 30, 2024	$ 1,595.1	$ 50.7	$ 665.2	$ 878.2	$ 1.0
Net income	16.5	0.0	0.0	16.5	0.0
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture	0.0	0.0	0.0	0.0	0.0
Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation	(0.1)	0.0	(0.1)	0.0	0.0
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition	2.6	0.0	2.6	0.0	0.0
Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Dec. 31, 2024	1,614.1	50.7	667.7	894.7	1.0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance at Sep. 30, 2025	1,768.9	50.8	671.0	1,046.1	1.0
Net income	15.4	0.0	0.0	15.4	0.0
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture	0.1	0.1	0.0	0.0	0.0
Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation	(0.5)	0.0	(0.5)	0.0	0.0
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition	3.1	0.0	3.1	0.0	0.0
Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Dec. 31, 2025	$ 1,787.0	$ 50.9	$ 673.6	$ 1,061.5	$ 1.0