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Restructuring And Other Charges (Narrative) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Restructuring Cost and Reserve [Line Items]      
Restructuring costs and other charges $ 124 $ 73 $ 99
Pension/OPEB Special Termination Benefit Enhancements [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring costs and other charges 12    
Lease Impairment Costs [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring costs and other charges     44
Severance And Employee Costs [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring costs and other charges 31 65 44
Other Restructuring [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring costs and other charges $ 81 $ 8 $ 11