BENEFIT PLANS (Tables)

12 Months Ended

Dec. 31, 2018



in thousands	2018	2017
Change in Benefit Obligation
Projected benefit obligation at beginning of year	$ 1,091,223	$ 1,006,674
Service cost	5,716	6,715
Interest cost	35,503	36,230
Plan amendment 1	0	10,869
Actuarial (gain) loss	(118,827)	81,969
Benefits paid	(54,679)	(51,234)
Projected benefit obligation at end of year	$ 958,936	$ 1,091,223
Change in Fair Value of Plan Assets
Fair value of assets at beginning of year	$ 840,901	$ 749,515
Actual return on plan assets	(59,083)	122,597
Employer contribution	109,631	20,023
Benefits paid	(54,679)	(51,234)
Fair value of assets at end of year	$ 836,770	$ 840,901
Funded status	(122,166)	(250,322)
Net amount recognized	$ (122,166)	$ (250,322)
Amounts Recognized in the Consolidated
Balance Sheets
Noncurrent assets	$ 6,488	$ 4,605
Current liabilities	(9,067)	(9,478)
Noncurrent liabilities	(119,587)	(245,449)
Net amount recognized	$ (122,166)	$ (250,322)
Amounts Recognized in Accumulated
Other Comprehensive Income
Net actuarial loss	$ 240,199	$ 250,581
Prior service cost	7,828	9,167
Total amount recognized	$ 248,027	$ 259,748



dollars in thousands	2018	2017	2016
Components of Net Periodic Pension
Benefit Cost
Service cost	$ 5,716	$ 6,715	$ 5,343
Interest cost	35,503	36,230	36,505
Expected return on plan assets	(59,188)	(48,506)	(51,562)
Amortization of prior service cost (credit)	1,340	1,340	(43)
Amortization of actuarial loss	9,826	7,397	6,163
Net periodic pension benefit cost (credit)	$ (6,803)	$ 3,176	$ (3,594)
Changes in Plan Assets and Benefit
Obligations Recognized in Other
Comprehensive Income
Net actuarial loss (gain)	$ (555)	$ 7,879	$ 33,682
Prior service cost	0	10,868	0
Reclassification of prior service (cost) credit	(1,340)	(1,340)	43
Reclassification of actuarial loss	(9,826)	(7,397)	(6,163)
Amount recognized in other comprehensive
income	$ (11,721)	$ 10,010	$ 27,562
Amount recognized in net periodic pension
benefit cost and other comprehensive
income	$ (18,524)	$ 13,186	$ 23,968
Assumptions
Weighted-average assumptions used to
determine net periodic benefit cost for
years ended December 31
Discount rate — PBO	3.72%	4.29%	4.55%
Discount rate — service cost	3.90%	4.63%	4.68%
Discount rate — interest cost	3.35%	3.63%	3.79%
Expected return on plan assets	7.00%	7.00%	7.50%
Weighted-average assumptions used to
determine benefit obligation at
December 31
Discount rate	4.39%	3.72%	4.29%

Fair Value Measurements at December 31, 2018



in thousands	Level 1	Level 2	Level 3	Total
Asset Category
Debt funds	$ 0	$ 168,953	$ 0	$ 168,953
Commodity funds	0	14,697	0	14,697
Equity funds	246	135,656	0	135,902
Investments in the fair value hierarchy	$ 246	$ 319,306	$ 0	$ 319,552
Interest in common/collective trusts (at NAV)				462,566
Private partnerships (at NAV)				54,652
Total pension plan assets				$ 836,770

Fair Value Measurements at December 31, 2017



in thousands	Level 1	Level 2	Level 3	Total
Asset Category
Debt funds	$ 0	$ 178,512	$ 0	$ 178,512
Commodity funds	0	17,041	0	17,041
Equity funds	1,089	143,010	0	144,099
Investments in the fair value hierarchy	$ 1,089	$ 338,563	$ 0	$ 339,652
Interest in common/collective trusts (at NAV)				416,397
Private partnerships (at NAV)				84,852
Total pension plan assets				$ 840,901



in thousands			Pension
Estimated Future Benefit Payments
2019			$ 56,493
2020			57,191
2021			58,317
2022			59,705
2023			60,871
2024-2028			301,996



in thousands	2018	2017
Change in Benefit Obligation
Projected benefit obligation at beginning of year	$ 43,480	$ 45,546
Service cost	1,357	1,167
Interest cost	1,240	1,260
Actuarial loss	856	378
Benefits paid	(6,099)	(4,871)
Projected benefit obligation at end of year	$ 40,834	$ 43,480
Change in Fair Value of Plan Assets
Fair value of assets at beginning of year	$ 0	$ 0
Actual return on plan assets	0	0
Fair value of assets at end of year	$ 0	$ 0
Funded status	$ (40,834)	$ (43,480)
Net amount recognized	$ (40,834)	$ (43,480)
Amounts Recognized in the Consolidated
Balance Sheets
Current liabilities	$ (5,560)	$ (5,624)
Noncurrent liabilities	(35,274)	(37,856)
Net amount recognized	$ (40,834)	$ (43,480)
Amounts Recognized in Accumulated
Other Comprehensive Income
Net actuarial gain	$ (18,624)	$ (20,757)
Prior service credit	(11,494)	(15,456)
Total amount recognized	$ (30,118)	$ (36,213)



dollars in thousands	2018	2017	2016
Components of Net Periodic Postretirement
Benefit Cost
Service cost	$ 1,358	$ 1,167	$ 1,123
Interest cost	1,240	1,260	1,209
Amortization of prior service credit	(3,962)	(4,236)	(4,236)
Amortization of actuarial gain	(1,298)	(1,587)	(1,751)
Net periodic postretirement benefit cost (credit)	$ (2,662)	$ (3,396)	$ (3,655)
Changes in Plan Assets and Benefit
Obligations Recognized in Other
Comprehensive Income
Net actuarial loss (gain)	$ 835	$ 342	$ (111)
Reclassification of prior service credit	3,962	4,236	4,236
Reclassification of actuarial gain	1,298	1,587	1,751
Amount recognized in other comprehensive
income	$ 6,095	$ 6,165	$ 5,876
Amount recognized in net periodic
postretirement benefit cost and other
comprehensive income	$ 3,433	$ 2,769	$ 2,221
Assumptions
Weighted-average assumptions used to
determine net periodic benefit cost for
years ended December 31
Discount rate — PBO	3.34%	3.59%	3.69%
Discount rate — service cost	3.56%	3.96%	3.77%
Discount rate — interest cost	2.90%	2.89%	2.81%
Weighted-average assumptions used to
determine benefit obligation at
December 31
Discount rate	4.01%	3.33%	3.58%



in thousands			Postretirement
Estimated Future Benefit Payments
2019			$ 5,561
2020			5,381
2021			5,077
2022			4,733
2023			4,523
2024–2028			17,168



in thousands			Postretirement
Participants Contributions
2016			$ 2,085
2017			2,025
2018			1,984