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Employee Benefits (Composition of Fair Value of the Plan Assets) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Levels of fair value hierarchy [Line Items]    
Equity instruments $ 176 $ 166
Debt instruments 253 242
Deposits with insurance companies 24 24
Fair value of plan assets 453 432
With quoted market price [Member]    
Levels of fair value hierarchy [Line Items]    
Equity instruments 138 126
Debt instruments 240 232
Without quoted market price [Member]    
Levels of fair value hierarchy [Line Items]    
Equity instruments 38 40
Debt instruments $ 13 $ 10