PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS - PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS NARRATIVE (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2025 USD ($) post-retirementPlan	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2033	Dec. 31, 2030
Defined Benefit Plan Disclosure [Line Items]
Number of defined benefit other post-retirement plans and defined contribution other post-retirement plans | post-retirementPlan	2
Accumulated benefit obligation	$ 733,179	$ 753,886
Expense	72,889	74,094	$ 67,763
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, benefit obligation, actuarial gain	$ (18,974)	$ 5,337
Discount rate	5.20%	5.50%
Employer contributions	$ 3,862	$ 3,566
Minimum future employer contributions in next fiscal year	1,189
Benefits paid	23,383	22,341
Settlement	(12,443)	(14,894)	(15,254)
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, benefit obligation, actuarial gain	$ (20,668)	$ (4,845)
Discount rate	5.50%	5.70%
Health care cost trend rate assumed, next fiscal year	8.70%	6.90%
Employer contributions	$ 11,805	$ 12,033
Benefits paid	11,805	12,033
Settlement	$ 0	$ 0	$ (926)
Other Benefits  | Scenario, Forecast
Defined Benefit Plan Disclosure [Line Items]
Ultimate health care cost trend rate				4.90%	4.90%