EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Company-administered plans:
Contribution to pension plans			$ 26,000
Expected plan contributions	$ 34,000		34,000
Pension Benefits
Company-administered plans:
Net pension expense	12,455	$ 7,056	36,435	$ 20,748
Company Administered Plan | Pension Benefits
Company-administered plans:
Service cost	2,449	3,074	8,264	9,370
Interest cost	21,301	19,425	64,165	58,275
Expected return on plan assets	(22,350)	(25,187)	(67,615)	(76,086)
Net actuarial loss	8,170	7,130	23,212	21,416
Prior service cost	167	145	533	434
Net pension expense	9,737	4,587	28,559	13,409
Union Administered Plan | Pension Benefits
Company-administered plans:
Net pension expense	2,718	2,469	7,876	7,339
U.S. | Company Administered Plan | Pension Benefits
Company-administered plans:
Net pension expense	11,067	7,011	33,199	21,033
Non-U.S. | Company Administered Plan | Pension Benefits
Company-administered plans:
Net pension expense	$ (1,330)	$ (2,424)	$ (4,640)	$ (7,624)