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Pension and Other Postretirement Benefits - Narrative (Details) - USD ($) | 12 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2020
Defined Benefit Plan Disclosure [Line Items] |  |  |
Eligible Age for Availing Postretirement Healthcare Benefits | 65 |  |
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component | $ (16,800,000) | $ (13,700,000) | $ (15,600,000)
Defined Contribution Plan, Cost | 14,200,000 | 13,300,000 | 14,700,000
Defined Benefit Plan, Non-cash Settlement Charge | 2,800,000 |  |
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Other Adjustments | (5,000) | 149,000 |
Pension plans contribution [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement | (1,805,000) | (13,966,000) |
Accumulated Benefit Obligation for all Defined Benefit Pension Plans | 740,400,000 | 967,500,000 |
Net Periodic Pension Cost | (15,990,000) | (12,336,000) | (14,208,000)
Special termination benefit charge | 277,000 | 473,000 | 288,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement | (205,000) | (3,190,000) | 51,000
Projected Benefit Payments for 2023 | 53,200,000 |  |
Projected Benefit Payments for 2024 | 54,400,000 |  |
Projected Benefit Payments for 2025 | 54,900,000 |  |
Projected Benefit Payments for 2026 | 54,500,000 |  |
Projected Benefit Payments for 2027 | 54,500,000 |  |
Projected Benefit Payments for 2028 through 2032 | 260,400,000 |  |
Accumulated Other Comprehensive Loss Expected to be Recognized in Net Periodic Pension Cost related to Net Actuarial Losses | 4,500,000 |  |
Estimated Future Employer Contributions | 7,900,000 |  |
Service Cost | 1,117,000 | 1,685,000 | 1,796,000
Other postretirement benefit plans [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Net Periodic Pension Cost | 309,000 | $ 338,000 | $ 385,000
Projected Benefit Payments for 2023 | 1,200,000 |  |
Projected Benefit Payments for 2024 | 1,100,000 |  |
Projected Benefit Payments for 2025 | 1,000,000 |  |
Projected Benefit Payments for 2026 | 900,000 |  |
Projected Benefit Payments for 2027 | 900,000 |  |
Projected Benefit Payments for 2028 through 2032 | 3,400,000 |  |
Accumulated Other Comprehensive Loss Expected to be Recognized in Net Periodic Pension Cost related to Net Actuarial Losses | 200,000 |  |
Accumulated Other Comprehensive Income Expected to be Recognized in Net Periodic Pension Cost related to Prior Service Credit | (300,000) |  |
Estimated Future Employer Contributions | $ 1,200,000 |  |

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- Definition Eligible Age for Availing Postretirement Healthcare Benefits + References No definition available. + Details
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- Definition Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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