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Note 14. Commitments and Contingencies (Details) - Commercial Commitments
$ in Millions
Dec. 31, 2024
USD ($)
Revolving Credit Facility  
Debt Instrument [Line Items]  
Letters of Credit Outstanding, Amount $ 0.0
Letters of Credit, Remaining Borrowing Capacity 250.0
Line of Credit Facility, Letter of Credit Sub-Limit 250.0
Bilateral Facilities [Member]  
Debt Instrument [Line Items]  
Letters of Credit Outstanding, Amount 167.8
Letters of Credit, Remaining Borrowing Capacity 159.7
Letters of Credit Outstanding, Secured by Cash 9.1
Surety Bond  
Debt Instrument [Line Items]  
Surety Bonds Outstanding, Amount 28.6
Surety Bond Capacity, Remaining Borrowing Capacity $ 225.0