Pension and Other Postretirement Benefits - Schedule of Weighted-average Asset Allocations by Asset Category (Details) - Pension Benefits	Jun. 30, 2023	Jun. 30, 2022
Defined Benefit Plan Disclosure [Line Items]
Total	100.00%	100.00%
Equity securities
Defined Benefit Plan Disclosure [Line Items]
Total	43.80%	35.70%
Fixed income securities
Defined Benefit Plan Disclosure [Line Items]
Total	36.50%	40.50%
Real assets securities
Defined Benefit Plan Disclosure [Line Items]
Total	19.70%	23.80%