ACCRUED EXPENSES AND OTHER LIABILITIES (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Accrued Expenses
Salaries and wages	$ 134,016	$ 135,930
Deferred compensation	5,172	4,269
Pension benefits	3,855	3,863
Other postretirement benefits	1,476	1,481
Other employee benefits	23,034	28,636
Insurance obligations	148,736	130,848
Operating taxes	94,004	95,848
Income taxes	5,883	8,550
Interest	34,521	30,003
Deposits, mainly from customers	81,200	69,903
Deferred revenue	21,500	14,004
Restructuring liabilities	4,372	13,074
Other	60,906	53,194
Total	618,675	589,603
Non-Current Liabilities
Salaries and wages	0	0
Deferred compensation	63,194	58,411
Pension benefits	400,197	412,417
Other postretirement benefits	18,631	19,760
Other employee benefits	0	3,279
Insurance obligations	260,357	242,473
Operating taxes	0	0
Income taxes	20,843	23,888
Interest	0	0
Deposits, mainly from customers	3,391	3,638
Deferred revenue	0	0
Restructuring liabilities	0	0
Other	61,536	48,776
Total	828,149	812,642
Total
Salaries and wages	134,016	135,930
Deferred compensation	68,366	62,680
Pension benefits	404,052	416,280
Other postretirement benefits	20,107	21,241
Other employee benefits	23,034	31,915
Insurance obligations	409,093	373,321
Operating taxes	94,004	95,848
Income taxes	26,726	32,438
Interest	34,521	30,003
Deposits, mainly from customers	84,591	73,541
Deferred revenue	21,500	14,004
Restructuring liabilities	4,372	13,074
Other	122,442	101,970
Total	$ 1,446,824	$ 1,402,245