Restructuring And Other Charges (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring costs and other charges	$ 34	$ 8
Pension/OPEB Special Termination Benefit Enhancements [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs and other charges	7
Severance And Employee Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs and other charges	12	10
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs and other charges	$ 15	$ 2