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Retirement Benefits (Schedule of Asset Allocation) (Details) | Dec. 31, 2024
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DB Pension Plans |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation | 100.00%
DB Pension Plans | Fixed-income securities |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation | 39.00%
DB Pension Plans | Equity securities |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation | 38.00%
DB Pension Plans | Real asset investments |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation | 10.00%
DB Pension Plans | Return-seeking fixed income |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation | 7.00%
DB Pension Plans | Liquid alternative investments |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation | 4.00%
DB Pension Plans | Cash and cash equivalents |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation | 2.00%
OPEB Plan |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation | 100.00%
OPEB Plan | Fixed-income securities |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation | 38.00%
OPEB Plan | Equity securities |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation | 42.00%
OPEB Plan | Real asset investments |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation | 9.00%
OPEB Plan | Return-seeking fixed income |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation | 6.00%
OPEB Plan | Liquid alternative investments |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation | 4.00%
OPEB Plan | Cash and cash equivalents |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation | 1.00%

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- Definition Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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