ACCRUED EXPENSES AND OTHER LIABILITIES (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Accrued Expenses
Salaries and wages	$ 93,355	$ 149,629
Deferred compensation	5,730	4,524
Pension benefits	3,764	3,754
Other postretirement benefits	1,391	1,387
Other employee benefits	7,728	28,370
Insurance obligations	149,946	139,314
Operating taxes	108,343	100,399
Income taxes	2,872	3,491
Interest	40,373	39,522
Deposits, mainly from customers	81,930	80,401
Operating lease liabilities	71,992	73,422
Deferred revenue	168,271	160,902
Restructuring liabilities	4,566	7,595
Other	57,037	55,029
Total	797,298	847,739
Non-Current Liabilities
Salaries and wages	0	0
Deferred compensation	57,876	55,279
Pension benefits	455,989	456,979
Other postretirement benefits	18,114	18,097
Other employee benefits	0	0
Insurance obligations	254,270	247,552
Operating taxes	0	0
Income taxes	19,655	18,477
Interest	0	0
Deposits, mainly from customers	3,460	3,390
Operating lease liabilities	134,784	137,384
Deferred revenue	415,166	421,176
Restructuring liabilities	0	0
Other	39,959	44,291
Total	1,399,273	1,402,625
Total
Salaries and wages	93,355	149,629
Deferred compensation	63,606	59,803
Pension benefits	459,753	460,733
Other postretirement benefits	19,505	19,484
Other employee benefits	7,728	28,370
Insurance obligations	404,216	386,866
Operating taxes	108,343	100,399
Income taxes	22,527	21,968
Interest	40,373	39,522
Deposits, mainly from customers	85,390	83,791
Operating lease liabilities	206,776	210,806
Deferred revenue	583,437	582,078
Restructuring liabilities	4,566	7,595
Other	96,996	99,320
Total	$ 2,196,571	$ 2,250,364