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Intangible Assets (Narrative) (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Intangible Assets [Abstract]        
Intangible asset impairment charges $ 0 $ 0 $ 0 $ 0
Amortization expense $ 1,000,000 $ 2,000,000 $ 2,000,000 $ 4,000,000