CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025
Statement of Comprehensive Income [Abstract]
Net earnings	$ 33.9	$ 58.7	$ 77.6	$ 135.6
Unrealized foreign currency translation adjustments	(0.4)	0.7	(0.4)	(0.7)
Other Comprehensive (Loss) Income	(0.4)	0.7	(0.4)	(0.7)
Total Comprehensive Income	$ 33.5	$ 59.4	$ 77.2	$ 134.9