Allowance for Credit Losses (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023
Receivables [Abstract]
Time period used for projecting future conditions to estimate credit losses	2 years
Provision for (release of) credit losses	$ 1.2	$ (7.8)
Net charge-offs (recoveries)	(0.2)	10.4
Net charge-offs (recoveries)	(0.2)	10.4
Other financial assets, allowance for credit loss	$ 0.7	$ 1.0	$ 1.0	$ 0.9