Restricted Cash Balances (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Restricted Cash Balances [Abstract]
Restricted Cash and Cash Equivalents	$ 0.0	$ 0.0
Pledged Cash for Derivative Contracts	5.3	3.3
Credit-Link Notes
Restricted Cash Balances [Abstract]
Cash Collateral	125.2	119.6
Restricted Cash and Cash Equivalents Items [Line Items]
Cash Collateral	125.2	119.6
Standby Letters of Credit
Restricted Cash Balances [Abstract]
Cash Collateral	59.3	56.6
Restricted Cash and Cash Equivalents Items [Line Items]
Cash Collateral	$ 59.3	$ 56.6