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Employee Benefits (Schedule Of Weighted Average Assumptions Used) (Details) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
United States [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Discount rate | 2.10% | 3.00% | 4.10%
Rate of compensation increase | 0.00% | 0.00% | 0.00%
Discount rate for benefit obligations | 3.00% | 4.10% | 3.40%
Discount rate for service cost | 3.20% | 4.20% | 3.80%
Discount rate for interest cost | 2.60% | 3.70% | 3.30%
Expected return on plan assets | 7.00% | 7.00% | 7.00%
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 | 1.50% | 2.50% | 3.70%
Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year | 6.50% | 6.80% | 7.00%
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 | 9 years | 10 years | 11 years
Discount rate for benefit obligations | 2.50% | 3.70% | 3.00%
Discount rate for service cost | 2.80% | 4.00% | 3.40%
Discount rate for interest cost | 2.20% | 3.40% | 2.70%
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year, Periodic Benefit Costs | 6.80% | 7.00% | 7.00%
Defined Benefit Plan, 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 | 9 years | 10 years | 10 years
Foreign Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Discount rate | 0.80% | 1.30% | 2.00%
Rate of compensation increase | 2.60% | 2.60% | 2.60%
Discount rate for benefit obligations | 1.30% | 2.00% | 1.80%
Discount rate for service cost | 1.40% | 2.20% | 2.00%
Discount rate for interest cost | 1.60% | 2.20% | 2.00%
Expected return on plan assets | 4.00% | 4.00% | 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 | 2.70% | 3.20% | 3.90%
Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year | 5.60% | 5.70% | 5.80%
Defined Benefit Plan, Defined Benefit Obligation, Ultimate Health Care Cost Trend Rate | 4.00% | 4.00% | 4.00%
Defined Benefit Plan, Years To Health Care Cost Trend Rate Reaches Ultimate Trend Rate, Benefit Obligation | 20 years | 21 years | 22 years
Discount rate for benefit obligations | 3.20% | 3.90% | 3.60%
Discount rate for service cost | 3.20% | 3.90% | 3.60%
Discount rate for interest cost | 3.20% | 3.90% | 3.60%
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year, Periodic Benefit Costs | 5.70% | 5.80% | 6.10%
Defined Benefit Plan, 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 | 20 years | 21 years | 11 years

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- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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- Definition Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(2) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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- Definition Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(3) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2919-114920 + Details
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- Definition Assumed rate, for next fiscal year, based on annual change in cost of health care cost benefits used to measure expected cost of benefits covered by defined benefit postretirement plan. Factors include, but are not limited to, estimate of health care inflation, change in health care utilization or delivery pattern, technological advances, and change in health status of participant. Excludes factors for change in composition of plan population by age and dependency status. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (l) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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