Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net Earnings	$ 57.2	$ 30.9	$ 101.1	$ 75.1
Foreign currency translation adjustments:
Unrealized foreign currency translation adjustments	(0.4)	0.3	0.4	1.8
Other Comprehensive (Loss) Income	(0.4)	0.3	0.4	1.8
Total Comprehensive Income	$ 56.8	$ 31.2	$ 101.5	$ 76.9