Postretirement Benefits (Discount Rates Used To Determine Net Cost Other) (Details) - Other Postretirement Benefits Plan [Member]	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
United States
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate	3.30%	4.20%	3.50%
Actuarial assumptions used to determine benefit obligations, Discount rate	2.50%	3.30%
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate	7.15%	9.10%	9.38%
Actuarial assumptions used to determine benefit obligations, Discount rate	6.91%	7.15%