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PENSION PLANS AND OTHER POST-RETIREMENT BENEFITS - Components of Net Pension Expense (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2024
Defined Benefit Plan Disclosure [Line Items] |  |  |
Net pension expense | $ 15,381 | $ 14,593 | $ 13,881
Pension Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Service cost | 11,508 | 11,082 | 11,073
Interest cost | 14,076 | 13,008 | 12,345
Expected return of plan assets | (13,282) | (11,790) | (11,400)
Amortization of actuarial (gain) losses | 489 | 1,306 | 643
Settlement cost | 2,590 | 987 | 1,220
Net pension expense | $ 15,381 | $ 14,593 | $ 13,881

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