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Pension and Other Postretirement Benefits - Schedule of Weighted-average Asset Allocations by Asset Category (Details) - Pension Benefits | Jun. 30, 2024 | Jun. 30, 2023
--- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |
Total | 100.00% | 100.00%
Equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total | 42.40% | 43.80%
Fixed income securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total | 31.60% | 36.50%
Real assets securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total | 26.00% | 19.70%

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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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- 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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