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Savings Plans, Pension Plans and Other Postretirement Employee Benefits (Weighted Average Assumptions Used for All Pension and OPEB Plans to Determine the Net Periodic Benefit Cost (Details) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Pension Plans [Member] |  |  |
Discount rate | 5.60% | 3.00% | 2.65%
Expected return on plan assets | 6.25% | 4.50% | 5.25%
Pension Plans [Member] | Minimum [Member] |  |  |
Rate of compensation increase | 3.00% | 3.00% | 3.00%
Pension Plans [Member] | Maximum [Member] |  |  |
Rate of compensation increase | 5.00% | 5.00% | 4.00%
OPEB [Member] |  |  |
Discount rate | 5.55% | 2.95% | 2.60%
Expected return on plan assets | 0.00% | 0.00% | 0.00%
OPEB [Member] | Minimum [Member] |  |  |
Rate of compensation increase | 0.00% | 0.00% | 0.00%
OPEB [Member] | Maximum [Member] |  |  |
Rate of compensation increase | 0.00% | 0.00% | 0.00%

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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 -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (k)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + 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 -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-8 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (k)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Weighted average rate of compensation increase used to determine net periodic benefit cost 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 -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (k)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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