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EMPLOYEE BENEFIT PLANS EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Deferred income taxes	$ (14,929)	$ 7,812	$ 2,910
Total recognized in other comprehensive income (loss)	49,976	(26,154)	(9,696)
Other comprehensive income (loss), risk-management assets/liabilities of unconsolidated affiliates, net of tax	4,991	(7,369)
Accumulated other comprehensive loss, net of tax	$ (107,659)	$ (157,635)	$ (131,481)
Expected long-term return on plan assets	7.00%	7.50%	7.50%
Compensation increase rate	3.60%	3.70%	3.65%
Reclassification Adjustment from AOCI, Tax, Retirement and Other Postretirement Benefit Plans, Gain (Loss)	$ 5,400	$ 4,200	$ 2,900
Deferred Compensation Plan Assets	36,100	32,400
Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit Obligation	567,011	583,072	534,849
Service cost	8,314	8,154	7,825
Interest cost	16,900	18,318	20,528
Plan participants’ contributions	0	0
Actuarial loss (gain)	(22,792)	37,951
Benefits paid	(18,483)	(16,200)
Fair value of plan assets	413,183	379,092	346,792
Actual return on plan assets (a)	41,374	36,400
Employer contributions	11,200	12,100
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant	0	0
Defined Benefit Plan, Plan Assets, Benefits Paid	(18,483)	(16,200)
Balance at December 31	(153,828)	(203,980)
Current liabilities	(5,219)	(4,679)
Noncurrent liabilities	(148,609)	(199,301)
Balance at December 31	(153,828)	(203,980)
Defined Benefit Plan, Accumulated Benefit Obligation	541,800	548,200
Expected return on plan assets	(25,109)	(24,964)	(23,600)
Amortization of prior service cost (credit)	114	114	0
Amortization of net loss	19,673	18,306	12,649
Net periodic benefit cost (income)	19,892	19,928	17,402
Net gain (loss) (a)	34,529	(31,016)	(25,389)
Prior service cost	0	0	(601)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	114	114	0
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax	19,673	18,306	12,649
Deferred income taxes	(12,493)	2,897	3,068
Total recognized in other comprehensive income (loss)	41,823	(9,699)	$ (10,273)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax	(374)	(487)
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	(131,460)	(185,662)
Accumulated other comprehensive loss	(131,834)	(186,149)
Deferred income taxes	36,759	49,251
Accumulated other comprehensive loss, net of tax	$ (95,075)	$ (136,898)
Discount rate	3.25%	3.00%
Compensation increase rate	3.60%	3.60%
Discount Rates - Retirement and Other Postretirement Plans	3.00%	3.50%	4.50%
Domestic and international equities	42.00%
Long duration fixed income	30.00%
Return-seeking credit	11.00%
Hedge funds	10.00%
Real estate funds	7.00%
Total	100.00%
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months	$ 25,962
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	26,756
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	27,769
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	28,759
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	29,651
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter	156,041
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(18,483)	$ (16,200)
Retirement Plan [Member] | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	42	43
Retirement Plan [Member] | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Subtotal
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	42	43
Retirement Plan [Member] | Measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	413,141	379,049
Retirement Plan [Member] | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	42	43
Retirement Plan [Member] | Equity securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	42	43
Retirement Plan [Member] | Equity securities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Equity securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Equity securities | Subtotal
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	42	43
Retirement Plan [Member] | Equity securities | Measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Defined Benefit Plan, Common Collective Trust, Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	166,132	164,099
Retirement Plan [Member] | Defined Benefit Plan, Common Collective Trust, Equity Securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Defined Benefit Plan, Common Collective Trust, Equity Securities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Defined Benefit Plan, Common Collective Trust, Equity Securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Defined Benefit Plan, Common Collective Trust, Equity Securities | Subtotal
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Defined Benefit Plan, Common Collective Trust, Equity Securities | Measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	166,132	164,099
Retirement Plan [Member] | Real estate funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	30,491	24,134
Retirement Plan [Member] | Real estate funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Real estate funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Real estate funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Real estate funds | Subtotal
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Real estate funds | Measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	30,491	24,134
Retirement Plan [Member] | Government obligations
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	49,444	45,237
Retirement Plan [Member] | Government obligations | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Government obligations | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Government obligations | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Government obligations | Subtotal
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Government obligations | Measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	49,444	45,237
Retirement Plan [Member] | Corporate obligations
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	120,877	101,626
Retirement Plan [Member] | Corporate obligations | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Corporate obligations | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Corporate obligations | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Corporate obligations | Subtotal
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Corporate obligations | Measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	120,877	101,626
Retirement Plan [Member] | Short-term Investments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4,243	4,890
Retirement Plan [Member] | Short-term Investments | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Short-term Investments | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Short-term Investments | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Short-term Investments | Subtotal
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Short-term Investments | Measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4,243	4,890
Retirement Plan [Member] | Other Investments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	41,954	39,063
Unfunded Capital Commitments	0	0
Retirement Plan [Member] | Other Investments | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Other Investments | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Other Investments | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Other Investments | Subtotal
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Retirement Plan [Member] | Other Investments | Measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 41,954	$ 39,063
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Assumed Health Care Cost Trend Rate	6.50%	6.50%
Defined Benefit Plan Assumed Ultimate Health Care Cost Trend Rate	5.00%	5.00%
Minimum Number Of Years Of Service For Certain Employees To Be Eligible To Participate In Welfare Plans That Provide Postretirement Medical And Life Insurance Benefits	5 years
Benefit Obligation	$ 51,027	$ 54,515	$ 52,309
Service cost	421	460	468
Interest cost	1,454	1,771	2,038
Plan participants’ contributions	1,092	1,032
Actuarial loss (gain)	(2,496)	2,860
Benefits paid	(3,959)	(3,917)
Fair value of plan assets	24,397	20,874	39,060
Actual return on plan assets (a)	5,919	(15,699)
Employer contributions	0	0
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant	1,092	1,032
Defined Benefit Plan, Plan Assets, Benefits Paid	(3,488)	(3,519)
Balance at December 31	(26,630)	(33,641)
Current liabilities	0	0
Noncurrent liabilities	(26,630)	(33,641)
Balance at December 31	(26,630)	(33,641)
Expected return on plan assets	(1,364)	(2,894)	(2,285)
Amortization of prior service cost (credit)	0	0	(227)
Amortization of net loss	3,692	5	297
Net periodic benefit cost (income)	4,203	(658)	291
Net gain (loss) (a)	7,052	(21,453)	700
Prior service cost	0	0	0
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	0	0	(227)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax	3,692	5	297
Deferred income taxes	(2,471)	4,933	(177)
Total recognized in other comprehensive income (loss)	8,273	(16,515)	$ 593
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax	0	0
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	(14,815)	(25,558)
Accumulated other comprehensive loss	(14,815)	(25,558)
Deferred income taxes	3,852	6,322
Accumulated other comprehensive loss, net of tax	$ (10,963)	$ (19,236)
Discount rate	3.00%	2.75%
Discount Rates - Retirement and Other Postretirement Plans	2.75%	3.50%	4.50%
Year that the rate reaches the ultimate trend rate	2025	2024
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months	$ 3,387
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	3,363
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	3,302
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	3,293
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	3,220
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter	15,339
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(3,959)	$ (3,917)
Other Postretirement Benefits Plan [Member] | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	23,917	20,066
Other Postretirement Benefits Plan [Member] | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	480	808
Other Postretirement Benefits Plan [Member] | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Plan [Member] | Subtotal
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	24,397	20,874
Other Postretirement Benefits Plan [Member] | Equity securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	17,953	15,116
Other Postretirement Benefits Plan [Member] | Equity securities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Plan [Member] | Equity securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Plan [Member] | Equity securities | Subtotal
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	17,953	15,116
Other Postretirement Benefits Plan [Member] | Money market funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Plan [Member] | Money market funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	480	808
Other Postretirement Benefits Plan [Member] | Money market funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Plan [Member] | Money market funds | Subtotal
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	480	808
Other Postretirement Benefits Plan [Member] | Insurance and group annuity contracts
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets (a)		13,200
NetProceedsFromExitOfAnInvestmentInAnInsuranceContract		16,200
Other Postretirement Benefits Plan [Member] | Municipal Bonds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5,964	4,950
Other Postretirement Benefits Plan [Member] | Municipal Bonds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Plan [Member] | Municipal Bonds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits Plan [Member] | Municipal Bonds | Subtotal
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5,964	4,950
Supplemental Executive Retirement Plan Investments Included in Other Assets[Member]
Defined Benefit Plan Disclosure [Line Items]
Balance at December 31	$ 111,200	116,200
401(k) Plan [Member]
Defined Contribution Plan Disclosure [Line Items]
Percent of employee matched of eligible compensation	100.00%
Percentage of Each Participants Eligible Compensation	6.00%
Contributions made to the Plan	$ 32,700	$ 27,100	$ 30,400
Profit-sharing contribution [Member]
Defined Contribution Plan Disclosure [Line Items]
Percentage of Each Participants Eligible Compensation	1.00%

X

- Definition

Defined Benefit Plan Accumulated Other Comprehensive Income Deferred Income Tax Expense Benefit Net of Tax

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Assumed health care cost trend rate for the next year used to measure the expected cost of benefits covered by the plan.

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Rate to which the cost-trend rate is assumed to decline (the ultimate trend rate)

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Target allocation percentage in hedge fund investments to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position.

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Target allocation percentage in long duration fixed income securities to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position.

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Target allocation percentage in global real estate investments to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position.

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Target allocation percentage in return-seeking credit securities to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position.

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Target allocation percentage to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position.

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Target allocation percentage in domestic and international equity securities to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position.

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Minimum Number Of Years Of Service For Certain Employees To Be Eligible To Participate In Welfare Plans That Provide Postretirement Medical And Life Insurance Benefits

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Other Comprehensive Income (Loss), Portion Attributable to Equity Method Investments, Net of Tax, Attributable to Parent

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Amount, after tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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-Publisher FASB
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Carrying amount as of the balance sheet date of assets held under deferred compensation agreements.

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Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

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