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Goodwill and Intangible Assets (Narrative) (Details) - USD ($)
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Finite Lived and Indefinite Lived Intangible Assets by Major Class [Line Items]      
Goodwill $ 959,000,000 $ 959,000,000 $ 959,000,000
Goodwill impairment charges 0 0  
Intangible asset impairment charges 0 0  
Amortization expense $ 12,000,000 $ 13,000,000