Share-based Payments - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Sep. 30, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unrecognized compensation expense	$ 105.5		$ 68.7
Recognition period of unrecognized compensation expense (in years)	3 years		3 years
PEP Units
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period (in years)	3 years
Restricted Stock Units
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Compensation expense related to share-based payments	$ 16.8	$ 15.1