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Pension and Other Postretirement Benefits - Schedule of Weighted Average Asset Allocations by Asset Category (Details) - Pension benefits | Jun. 30, 2022 | Jun. 30, 2021
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Defined Benefit Plan Disclosure [Line Items] |  |
Benefit plan weighted-average asset allocations percentage | 100.00% | 100.00%
Equity investments |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Benefit plan weighted-average asset allocations percentage | 37.00% | 48.00%
Fixed income investments, including cash |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Benefit plan weighted-average asset allocations percentage | 52.00% | 42.00%
Other |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Benefit plan weighted-average asset allocations percentage | 11.00% | 10.00%

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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