PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS - NARRATIVE (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2019	Dec. 31, 2016 USD ($) postretirement_plan	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Number of defined benefit, other post-retirement plans, and defined contribution other post-retirement plans (postretirement plan) | postretirement_plan			2
Defined benefit plan, accumulated benefit obligation			$ 1,081,261	$ 1,129,052
Defined contribution pan, cost recognized			43,545	44,285	$ 46,064
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Employer contributions			21,580	$ 32,898
Defined benefit plans, minimum future employer contributions in next fiscal year			1,158
Net pension liability			$ 5,082
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, ultimate health care cost trend rate, pre sixty five			7.00%	6.50%
Defined benefit plan, ultimate health care cost trend rate, post sixty five				7.30%
Employer contributions			$ 20,117	$ 20,375
Other Benefits | Scenario, Forecast
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, ultimate health care cost trend rate	5.00%	5.00%
Domestic Plans
Defined Benefit Plan Disclosure [Line Items]
Employer contributions			$ 18,000
Minimum | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Expected period from date of approved amendment to complete termination			15 months
Maximum | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Expected period from date of approved amendment to complete termination			18 months