Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net Earnings Including Redeemable Noncontrolling Interest	$ 39.1	$ 38.5	$ 82.3	$ 73.9
Hedging adjustments:
Reclassifications to net earnings	0.0	0.6	7.1	1.7
Foreign currency translation adjustments:
Unrealized foreign currency translation adjustments	(1.1)	0.3	(1.9)	0.3
Tax expense on other comprehensive income:
Reclassifications to net earnings	0.0	(0.1)	(0.4)	(0.1)
Total Other Comprehensive (Loss) Income Including Redeemable Noncontrolling Interest	(1.1)	0.8	4.8	1.9
Less: Comprehensive income attributable to redeemable noncontrolling interest	0.0	29.6	38.3	57.4
Total Comprehensive Income Available to Common Stockholders	$ 38.0	$ 9.7	$ 48.8	$ 18.4