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Senior Notes (Narrative) (Details)
$ in Millions
9 Months Ended
Sep. 30, 2023
USD ($)
Senior Notes 4.25%  
Debt Instrument [Line Items]  
Debt Instrument, Term 68 months
Senior Notes  
Debt Instrument [Line Items]  
Long-term Debt, Fair Value $ 342.6
Senior Note Two | Senior Notes 4.25%  
Debt Instrument [Line Items]  
Stated interest rate percentage 4.25%
Senior Note Two | Senior Notes  
Debt Instrument [Line Items]  
Debt Instrument, Unamortized Debt Issuance Costs 4.30%
Senior Note One | Senior Notes  
Debt Instrument [Line Items]  
Debt Instrument, Discount Rate 4.42%