POSTRETIREMENT BENEFITS AND EMPLOYEE STOCK OWNERSHIP PLAN - Target And Actual Asset Allocation (Details)	Jun. 30, 2025
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Target Asset Allocation (in percent)	100.00%
Other Retiree Benefits
Defined Benefit Plan Disclosure [Line Items]
Target Asset Allocation (in percent)	100.00%
Cash | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Target Asset Allocation (in percent)	1.00%
Cash | Other Retiree Benefits
Defined Benefit Plan Disclosure [Line Items]
Target Asset Allocation (in percent)	2.00%
Debt securities | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Target Asset Allocation (in percent)	64.00%
Debt securities | Other Retiree Benefits
Defined Benefit Plan Disclosure [Line Items]
Target Asset Allocation (in percent)	1.00%
Equity securities | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Target Asset Allocation (in percent)	35.00%
Equity securities | Other Retiree Benefits
Defined Benefit Plan Disclosure [Line Items]
Target Asset Allocation (in percent)	97.00%