Employee Benefit Plans - Asset Allocation (Details)	Jun. 30, 2026	Jun. 30, 2025
Defined Benefit Plan, Debt Security
Target asset allocations and weighted-average asset allocation of plan assets
Percentage of plan assets (as a percent)	68.00%	77.00%
Defined Benefit Plan, Debt Security \| Minimum
Target asset allocations and weighted-average asset allocation of plan assets
Target allocation (as a percent)	65.00%
Defined Benefit Plan, Debt Security \| Maximum
Target asset allocations and weighted-average asset allocation of plan assets
Target allocation (as a percent)	85.00%
Defined Benefit Plan, Equity Securities
Target asset allocations and weighted-average asset allocation of plan assets
Percentage of plan assets (as a percent)	27.00%	19.00%
Defined Benefit Plan, Equity Securities \| Minimum
Target asset allocations and weighted-average asset allocation of plan assets
Target allocation (as a percent)	10.00%
Defined Benefit Plan, Equity Securities \| Maximum
Target asset allocations and weighted-average asset allocation of plan assets
Target allocation (as a percent)	30.00%
Global Asset Allocations/Risk Parity
Target asset allocations and weighted-average asset allocation of plan assets
Percentage of plan assets (as a percent)	4.00%	3.00%
Global Asset Allocations/Risk Parity \| Minimum
Target asset allocations and weighted-average asset allocation of plan assets
Target allocation (as a percent)	0.00%
Global Asset Allocations/Risk Parity \| Maximum
Target asset allocations and weighted-average asset allocation of plan assets
Target allocation (as a percent)	15.00%
Defined Benefit Plan, Plan Assets, Other
Target asset allocations and weighted-average asset allocation of plan assets
Percentage of plan assets (as a percent)	1.00%	1.00%
Defined Benefit Plan, Plan Assets, Other \| Minimum
Target asset allocations and weighted-average asset allocation of plan assets
Target allocation (as a percent)	0.00%
Defined Benefit Plan, Plan Assets, Other \| Maximum
Target asset allocations and weighted-average asset allocation of plan assets
Target allocation (as a percent)	10.00%