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Summary of Significant Accounting Policies (Environmental and ARO) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Accounting Policies [Abstract]      
Asset Retirement Obligation $ 5.0 $ 2.0 $ 1.9
Asset Retirement Obligation, Period Increase (Decrease) 2.9 0.0  
Accretion Expense, Including Asset Retirement Obligations 0.2 0.1  
Asset Retirement Obligation, Cash Paid to Settle $ (0.1) $ (0.1)