Allowance for Credit Losses (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023	Dec. 31, 2022
Receivables [Abstract]
Provision for (release of) credit losses	$ 8.4	$ 14.6	$ 8.5	$ 14.1
Net charge-offs (recoveries)	(2.4)	(0.3)	$ 7.9	2.6
Time period used for projecting future conditions to estimate credit losses			2 years
Other financial assets, allowance for credit loss	$ 1.0	$ 1.1	$ 1.0	$ 1.1	$ 0.9	$ 0.9	$ 1.0	$ 0.8