Pension And Postretirement Benefits (Schedule Of Weighted Average Assumptions Used To Determine Benefit Obligation) (Details)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Foreign Plan [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	1.07%	1.70%	2.42%
Rate of compensation increase	3.10%	2.89%	3.06%
Interest credit rate	0.29%	0.22%	0.84%
Foreign Plan [Member] | Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate			3.30%
UNITED STATES | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.62%	3.34%	4.36%
Interest credit rate	0.93%	2.83%	2.40%
UNITED STATES | Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.30%	3.20%	4.30%