PENSION PLANS AND OTHER POST-RETIREMENT BENEFITS - Contributions (Details)	3 Months Ended	12 Months Ended
	Dec. 31, 2021 USD ($)	Dec. 31, 2022 USD ($) item employee	Dec. 31, 2021 USD ($) item	Dec. 31, 2020 USD ($)
Defined benefit plans
Number of non-contributory qualified defined benefit pension plans | item		3
New benefits accrued		$ 0
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements	$ (5,900,000)
Defined Benefit Plans
Defined benefit plans
New benefits accrued		0
Defined Benefit Plan, Benefit Obligation	744,463,000	538,968,000	$ 744,463,000	$ 826,120,000
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements			(5,864,000)
Employer contributions		$ 10,055,000	20,755,000
Group annuity contract
Defined benefit plans
Defined Benefit Plan, Benefit Obligation	47,100,000		$ 47,100,000
Number Of Participants Transferred | item			400
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements			$ (5,900,000)
Post-retirement Benefit Obligations
Defined benefit plans
Number of persons eligible to become a new participant | employee		0
Defined Benefit Plan, Benefit Obligation	$ 96,434,000	$ 56,223,000	96,434,000	$ 106,704,000
Assets in unfunded plans		0
Employer contributions		$ 6,894,000	$ 8,638,000
Weighted-average assumptions used to determine the projected benefit obligations and net periodic benefit cost
Health care trend rate assumed for the next fiscal year (as a percent)		6.50%
Ultimate health care cost trend rate (as a percent)		5.00%
Supplemental Plans
Defined benefit plans
Number of non-qualified plans | item		2
Number of persons eligible to become a new participant | item		0
Assets in unfunded plans		$ 0