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Debt And Interest Expense (Credit Facilities) (Narrative) (Details)
$ in Millions
12 Months Ended
Dec. 31, 2022
USD ($)
Debt Instrument [Line Items]  
Borrowing capacity of senior unsecured revolving credit facility $ 200.0
Credit facility, maturity date Dec. 12, 2024
Aggregate increase of commitment amount available $ 150.0
Maximum [Member]  
Debt Instrument [Line Items]  
Leverage ratio 4.0