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Goodwill And Other Intangibles (Estimated Future Aggregate Amortization Expense) (Details) - USD ($)
$ in Millions
Sep. 30, 2024
Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]    
2024 (excludes amortization through September 30, 2024) $ 91  
2025 337  
2026 317  
2027 308  
2028 285  
Subsequent years 1,382  
Net Carrying Amount $ 2,720 $ 2,630