Pension And Postretirement Benefits (Schedule Of Weighted Average Assumptions Used To Determine Net Periodic Benefit Cost) (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
United States | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.34%	4.36%	3.75%
Expected rate of return on assets assumption reflected as a long-term asset allocation	7.25%	7.25%	7.75%
Interest credit rate	2.83%	2.40%	2.49%
United States | Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.20%	4.10%	3.50%
Foreign Plan [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	1.70%	2.42%	2.15%
Expected rate of return on assets assumption reflected as a long-term asset allocation	5.31%	5.34%	6.49%
Rate of compensation increase	2.89%	3.06%	2.80%
Interest credit rate	0.22%	0.84%	0.66%