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Income Taxes - Operating Loss and Tax Credit Carryforwards (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Operating Loss Carryforwards [Line Items]    
Notional interest deduction ("NID") $ 40.0 $ 0.0
State charitable contribution carryover ("SCCCs") 0.7 0.9
US State    
Operating Loss Carryforwards [Line Items]    
Net operating losses 134.0 103.8
Tax credit carryforwards 3.2 3.7
US Federal    
Operating Loss Carryforwards [Line Items]    
Tax credit carryforwards 0.0 10.6
Foreign    
Operating Loss Carryforwards [Line Items]    
Net operating losses $ 49.8 $ 63.6