Pension And Other Postretirement Benefits (Schedule Of Assumptions Used) (Details)	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Defined Benefit Plan, Healthcare cost trend on covered charges	5.00%
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate, Actuarial Present Value	5.00%
Pension Benefits
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate	2.62%	3.38%
Rate of compensation increase	4.49%	4.36%
Postretirement Benefits
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate	2.22%	3.19%
Defined Benefit Plan, Healthcare cost trend on covered charges	5.00%	5.00%

Defined Benefit Plan, Health Care Cost Trend Rate Assumed, for Next Fiscal Year, Actuarial Present Value

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- Definition

Defined Benefit Plan, Ultimate Health Care Cost Trend Rate, Actuarial Present Value

+ References

No definition available.

+ Details

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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

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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

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- References

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