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v3.20.4

Savings Plans, Pension Plans and Other Postretirement Employee Benefits (Weighted Average Assumptions Used to Determine the Benefit Obligation for Non-Deltic and Deltic Plans) (Details) | Dec. 31, 2020 | Dec. 31, 2019
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Pension Plans [Member] | Non-Deltic Plans [Member] |  |
Discount rate | 2.65% | 3.40%
Rate of salaried compensation increase | 3.00% | 3.00%
Pension Plans [Member] | Deltic Plans [Member] |  |
Discount rate | 2.65% | 3.40%
Rate of salaried compensation increase | 4.00% | 4.00%
OPEB [Member] | Non-Deltic Plans [Member] |  |
Discount rate | 2.60% | 3.40%
OPEB [Member] | Deltic Plans [Member] |  |
Discount rate | 2.60% | 3.40%

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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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- Details
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