Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Statement of Comprehensive Income [Abstract]
Net Earnings	$ 21.0	$ 73.7	$ 156.6	$ 174.8
Foreign currency translation adjustments:
Unrealized foreign currency translation adjustments	1.8	(0.1)	1.1	0.3
Other Comprehensive Income (Loss)	1.8	(0.1)	1.1	0.3
Total Comprehensive Income	$ 22.8	$ 73.6	$ 157.7	$ 175.1