Pension and Other Postretirement Benefits - Narrative (Details) - USD ($)	12 Months Ended
	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