Pension and Other Postretirement Benefits - Schedule of Expected Health Care Cost Trend Rates (Details)	Jun. 30, 2025	Jun. 30, 2024
Retirement Benefits [Abstract]
Assumed health care cost trend rate	6.50%	6.50%
Rate to which the cost trend rate is assumed to decline and remain (the ultimate trend rate)	5.00%	5.00%

Assumed rate, for next fiscal year, based on annual change in cost of health care cost benefits used to measure expected cost of benefits covered by defined benefit postretirement plan. Factors include, but are not limited to, estimate of health care inflation, change in health care utilization or delivery pattern, technological advances, and change in health status of participant. Excludes factors for change in composition of plan population by age and dependency status.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (l)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

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