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Income Taxes (Summary Of Income) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Income Taxes [Abstract]      
Domestic $ 818,057 $ 311,021 $ 465,253
Foreign (5,294) (17,240) (6,968)
Income before income taxes $ 812,763 $ 293,781 $ 458,285