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Goodwill And Other Intangibles (Estimated Future Aggregate Amortization Expense) (Details) - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]    
2025 (excludes amortization through March 31, 2025) $ 374  
2026 497  
2027 460  
2028 437  
2029 408  
Subsequent years 2,560  
Net Carrying Amount $ 4,736 $ 4,820