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Goodwill And Other Intangibles (Estimated Future Aggregate Amortization Expense) (Details) - USD ($)
$ in Millions
Mar. 31, 2023
Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]    
2023 (excludes amortization through March 31, 2023) $ 241  
2023 301  
2024 268  
2025 250  
2026 249  
Subsequent years 1,143  
Net Carrying Amount $ 2,452 $ 2,537