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Derivative Instruments (Gains (Losses) Related to Derivatives and Hedged Items) (Details) - Interest rate swaps - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Designated as Hedging Instrument | Fair Value Hedging    
Derivative [Line Items]    
Derivative, change in unrealized gain (loss) on fair value hedging instruments $ 0 $ (12,991)
Change in unrealized gain (loss) on hedged item in fair value hedge 0 14,116
Net, derivative, fair value hedge, included in effectiveness, gain (loss) 0 1,125
Not Designated as Hedging Instrument    
Derivative [Line Items]    
Amount excluded: recognized in income immediately $ 0 $ 0