PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Table)

12 Months Ended

Dec. 31, 2020

Retirement Benefits, Description [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

	Pension Benefits						Postretirement Benefits
(In thousands)	2020		2019		2018		2020		2019		2018
Service cost	$	26,013	$	23,664	$	27,116	$	506	$	432	$	490
Interest cost	23,847		29,019		26,149		609		796		719
Expected return on plan assets	(67,217)		(59,153)		(58,641)		—		—		—
Amortization of prior service cost	(269)		(283)		(252)		(657)		(656)		(656)
Recognized net actuarial loss/(gain)	23,062		9,310		16,867		(5)		(198)		(131)
Cost of settlements/curtailments	2,395		—		337		—		—		—
Net periodic benefit cost	$	7,831	$	2,557	$	11,576	$	453	$	374	$	422

ScheduleOfChangesInProjectedBenefitObligationsTableTextBlock

	Pension Benefits				Postretirement Benefits
(In thousands)	2020		2019		2020		2019
Change in benefit obligation:
Beginning of year	$	945,187	$	814,894	$	23,566	$	22,060
Service cost	26,013		23,664		506		432
Interest cost	23,847		29,019		609		796
Plan participants’ contributions	1,366		1,276		331		346
Actuarial (gain) loss	92,596		118,893		3,048		2,124
Benefits paid	(46,607)		(43,736)		(2,390)		(2,192)
Actual expenses	(1,526)		(1,846)		—		—
Curtailments	1,636		—		—		—
Settlements	(3,867)		—		—		—
Currency translation adjustments	5,390		3,023		—		—
End of year	$	1,044,035	$	945,187	$	25,670	$	23,566

Change in plan assets:
Beginning of year	$	835,139	$	738,296	$	—	$	—
Actual return on plan assets	105,810		133,896		—		—
Employer contribution	155,359		3,867		2,059		1,846
Plan participants’ contributions	1,366		1,276		331		346
Benefits paid	(46,607)		(43,736)		(2,390)		(2,192)
Actual expenses	(1,526)		(1,846)		—		—
Settlements	(3,867)		—		—		—
Currency translation adjustments	4,835		3,386		—		—
End of year	$	1,050,509	$	835,139	$	—	$	—
Funded status	$	6,474	$	(110,048)	$	(25,670)	$	(23,566)

	Pension Benefits				Postretirement Benefits
(In thousands)	2020		2019		2020		2019
Amounts recognized on the balance sheet
Noncurrent assets	$	92,554	$	11,711	$	—	$	—
Current liabilities	(6,444)		(5,143)		(1,596)		(1,547)
Noncurrent liabilities	(79,636)		(116,616)		(24,074)		(22,019)
Total	$	6,474	$	(110,048)	$	(25,670)	$	(23,566)
Amounts recognized in accumulated other comprehensive income (AOCI)
Net actuarial loss (gain)	$	294,545	$	263,660	$	624	$	(2,429)
Prior service cost	(321)		(934)		(747)		(1,404)
Total	$	294,224	$	262,726	$	(123)	$	(3,833)
Information for pension plans with an accumulated benefit obligation in excess of plan assets:
Projected benefit obligation	$	114,297	$	881,731	N/A		N/A
Accumulated benefit obligation	111,807		848,309		N/A		N/A
Fair value of plan assets	28,217		759,972		N/A		N/A

ScheduleOfAssumptionsUsedTableTextBlock

	Pension Benefits				Postretirement Benefits
	2020		2019		2020		2019
Weighted-average assumptions in determination of benefit obligation:
Discount rate	2.36	%	3.05	%	2.43	%	3.15	%
Rate of compensation increase	3.41	%	3.46	%	N/A		N/A
Health care cost trends:
Rate assumed for subsequent year	N/A		N/A		7.25	%	7.50	%
Ultimate rate reached in 2026	N/A		N/A		4.50	%	4.50	%
Weighted-average assumptions in determination of net periodic benefit cost:
Discount rate	3.05	%	4.09	%	3.15	%	4.20	%
Expected return on plan assets	7.11	%	7.59	%	N/A		N/A
Rate of compensation increase	3.46	%	3.50	%	N/A		N/A
Health care cost trends:
Rate assumed for subsequent year	N/A		N/A		7.50	%	7.85	%
Ultimate rate reached in 2026	N/A		N/A		4.50	%	4.50	%

ScheduleOfAllocationOfPlanAssetsTableTextBlock

	As of December 31,		Target	Expected
	2020	2019	Exposure	Range
Asset class
Domestic equities	54%	51%	50%	40%-60%
International equities	15%	15%	15%	10%-20%
Total equity	69%	66%	65%	55%-75%
Fixed income	31%	34%	35%	25%-45%

ScheduleOfChangesInFairValueOfPlanAssetsTableTextBlock

Asset Category	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash and cash equivalents	$	22,457	$	2,010	$	20,447	$	—
Equity securities- Mutual funds (1)	534,479		427,391		107,088		—
Bond funds (2)	273,979		211,372		62,607		—
Other (3)	4,224		—		—		4,224
December 31, 2019	$	835,139	$	640,773	$	190,142	$	4,224
Cash and cash equivalents	$	16,710	$	1,376	$	15,334	$	—
Equity securities- Mutual funds (1)	688,257		570,293		117,964		—
Bond funds (2)	341,140		242,627		98,513		—
Other (3)	4,402		—		—		4,402
December 31, 2020	$	1,050,509	$	814,296	$	231,811	$	4,402

(In thousands)	Insurance Contracts		Other		Total
December 31, 2018	$	8,408	$	2,313	$	10,721
Actual return on plan assets:
Relating to assets still held at the reporting date	—		115		115
Purchases, sales, and settlements	(8,408)		1,715		(6,693)
Foreign currency translation adjustment	—		81		81
December 31, 2019	$	—	$	4,224	$	4,224
Actual return on plan assets:
Relating to assets still held at the reporting date	5		(20)		(15)
Relating to assets sold during the period	—		(58)		(58)
Purchases, sales, and settlements	523		(680)		(157)
Foreign currency translation adjustment	49		359		408
December 31, 2020	$	577	$	3,825	$	4,402

ScheduleOfExpectedBenefitPaymentsTableTextBlock

(In thousands)	Pension Plans		Postretirement Plans		Total
2021	$	55,668	$	1,596	$	57,264
2022	55,872		1,592		57,464
2023	56,721		1,595		58,316
2024	61,772		1,569		63,341
2025	58,203		1,548		59,751
2026 — 2030	295,165		7,099		302,264