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Pension and Other Postretirement Benefit Plans - Plan Asset Allocations (Details) | Dec. 31, 2024 | Dec. 31, 2023
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Pension |  |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] |  |
Actual Plan Asset Allocations | 100.00% | 100.00%
Plan Asset Target Allocations | 100.00% |
Pension | Equity Securities |  |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] |  |
Actual Plan Asset Allocations | 57.00% | 57.00%
Plan Asset Target Allocations | 56.00% |
Pension | Fixed Income Securities |  |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] |  |
Actual Plan Asset Allocations | 40.00% | 40.00%
Plan Asset Target Allocations | 41.00% |
Pension | Real Estate |  |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] |  |
Actual Plan Asset Allocations | 3.00% | 3.00%
Plan Asset Target Allocations | 3.00% |
Postretirement Health and Life |  |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] |  |
Actual Plan Asset Allocations | 100.00% | 100.00%
Plan Asset Target Allocations | 100.00% |
Postretirement Health and Life | Equity Securities |  |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] |  |
Actual Plan Asset Allocations | 67.00% | 67.00%
Plan Asset Target Allocations | 65.00% |
Postretirement Health and Life | Fixed Income Securities |  |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] |  |
Actual Plan Asset Allocations | 33.00% | 33.00%
Plan Asset Target Allocations | 35.00% |
Postretirement Health and Life | Real Estate |  |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] |  |
Actual Plan Asset Allocations | 0.00% | 0.00%
Plan Asset Target Allocations | 0.00% |

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- Definition Percentage of target 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/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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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- 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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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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