v3.26.1
Retirement Benefits - Schedule of Weighted-Average Allocation of Majority of Assets Related to Defined Benefit Plans (Details)
Jun. 30, 2026
Jun. 30, 2025
Defined Benefit Plan Disclosure [Line Items]    
Weighted-average allocation of assets related to defined benefit plans (as percent) 100.00% 100.00%
Equities    
Defined Benefit Plan Disclosure [Line Items]    
Weighted-average allocation of assets related to defined benefit plans (as percent) 15.00% 20.00%
Fixed income    
Defined Benefit Plan Disclosure [Line Items]    
Weighted-average allocation of assets related to defined benefit plans (as percent) 53.00% 46.00%
Other investments    
Defined Benefit Plan Disclosure [Line Items]    
Weighted-average allocation of assets related to defined benefit plans (as percent) 32.00% 34.00%