Employee Benefits (Schedule Of Weighted Average Assumptions Used) (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
United States [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.00%	4.10%	3.40%
Rate of compensation increase	0.00%	0.00%	0.00%
Discount rate for benefit obligations	4.10%	3.40%	3.80%
Discount rate for service cost	4.20%	3.80%	4.10%
Discount rate for interest cost	3.70%	3.30%	3.20%
Expected return on plan assets	7.00%	7.00%	6.80%
Rate of compensation increase	0.00%	0.00%	0.00%
United States [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.50%	3.70%	3.00%
Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year	6.80%	7.00%	7.30%
Defined Benefit Plan, Defined Benefit Obligation, Ultimate Health Care Cost Trend Rate	4.50%	4.50%	4.50%
Defined Benefit Plan, Years To Health Care Cost Trend Rate Reaches Ultimate Trend Rate, Benefit Obligation	10 years	11 years	11 years
Discount rate for benefit obligations	3.70%	3.00%	3.30%
Discount rate for service cost	4.00%	3.40%	3.80%
Discount rate for interest cost	3.40%	2.70%	2.60%
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year, Periodic Benefit Costs	7.00%	7.00%	6.80%
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate	4.50%	4.50%	4.60%
Defined Benefit Plan, Years To Health Care Cost Trend Rate Reaches Ultimate Trend Rate	10 years	10 years	11 years
Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	1.30%	2.00%	1.80%
Rate of compensation increase	2.60%	2.60%	2.60%
Discount rate for benefit obligations	2.00%	1.80%	1.80%
Discount rate for service cost	2.20%	2.00%	1.90%
Discount rate for interest cost	2.20%	2.00%	2.00%
Expected return on plan assets	4.00%	3.80%	3.80%
Rate of compensation increase	2.60%	2.60%	2.60%
Foreign Plan [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.20%	3.90%	4.00%
Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year	5.70%	5.80%	6.20%
Defined Benefit Plan, Defined Benefit Obligation, Ultimate Health Care Cost Trend Rate	4.00%	4.00%	4.50%
Defined Benefit Plan, Years To Health Care Cost Trend Rate Reaches Ultimate Trend Rate, Benefit Obligation	21 years	22 years	12 years
Discount rate for benefit obligations	3.90%	3.60%	3.30%
Discount rate for service cost	3.90%	3.60%	3.30%
Discount rate for interest cost	3.90%	3.60%	3.30%
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year, Periodic Benefit Costs	5.80%	6.10%	6.80%
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate	4.00%	4.50%	4.50%
Defined Benefit Plan, Years To Health Care Cost Trend Rate Reaches Ultimate Trend Rate	21 years	11 years	12 years