Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net Earnings Including Redeemable Noncontrolling Interest	$ 3.9	$ 2.5	$ 43.2	$ 35.4
Hedging adjustments:
Reclassifications to net earnings	6.6	0.6	7.1	1.1
Foreign currency translation adjustments:
Unrealized foreign currency translation adjustments	(0.4)	(0.9)	(0.8)	0.0
Tax expense on other comprehensive income:
Reclassifications to net earnings	(0.4)	0.0	(0.4)	0.0
Total Other Comprehensive Income (Loss) Including Redeemable Noncontrolling Interest	5.8	(0.3)	5.9	1.1
Less: Comprehensive income attributable to redeemable noncontrolling interest	7.1	1.7	38.3	27.8
Total Comprehensive Income Available to Common Stockholders	$ 2.6	$ 0.5	$ 10.8	$ 8.7