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Debt And Interest Expense (Credit Facilities) (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Debt Instrument [Line Items]
Credit facility, maturity date	Dec. 06, 2028
Aggregate increase of commitment amount available	$ 150.0
Borrowing capacity of senior unsecured revolving credit facility	200.0
2025 Senior Notes, remaining long-term liability	$ 200.0
Due 2025 [Member]
Debt Instrument [Line Items]
Credit facility, maturity date	Apr. 01, 2025
Debt Instrument, Face Amount	$ 500.0	$ 500.0
Maximum [Member]
Debt Instrument [Line Items]
Leverage ratio	4.0

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