ACCRUED EXPENSES AND OTHER LIABILITIES (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Accrued Liabilities and Other Liabilities [Abstract]
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccountsPayableAndOtherAccruedLiabilitiesCurrent	us-gaap:AccountsPayableAndOtherAccruedLiabilitiesCurrent
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesNoncurrent	us-gaap:OtherLiabilitiesNoncurrent
Accrued Expenses
Salaries and wages	$ 116,237	$ 126,119
Deferred compensation	4,375	6,436
Pension benefits	3,841	3,863
Other postretirement benefits	1,469	1,478
Other employee benefits	11,236	21,577
Insurance obligations	166,905	163,763
Operating taxes	120,973	116,003
Income taxes	8,168	2,873
Interest	46,160	46,032
Deposits, mainly from customers	75,769	82,573
Operating lease liabilities	72,513	72,285
Deferred revenue	167,281	165,205
Restructuring liabilities	17,356	6,765
Other	57,032	61,105
Total	869,315	876,077
Non-Current Liabilities
Salaries and wages	0	0
Deferred compensation	66,533	65,006
Pension benefits	402,483	413,829
Other postretirement benefits	18,976	20,187
Other employee benefits	0	0
Insurance obligations	300,372	285,838
Operating taxes	0	0
Income taxes	18,257	17,484
Interest	0	0
Deposits, mainly from customers	3,185	3,065
Operating lease liabilities	162,124	151,361
Deferred revenue	446,691	438,482
Restructuring liabilities	0	0
Other	77,850	46,751
Total	1,496,471	1,442,003
Total
Salaries and wages	116,237	126,119
Deferred compensation	70,908	71,442
Pension benefits	406,324	417,692
Other postretirement benefits	20,445	21,665
Other employee benefits	11,236	21,577
Insurance obligations	467,277	449,601
Operating taxes	120,973	116,003
Income taxes	26,425	20,357
Interest	46,160	46,032
Deposits, mainly from customers	78,954	85,638
Operating lease liabilities	234,637	223,646
Deferred revenue	613,972	603,687
Restructuring liabilities	17,356	6,765
Other	134,882	107,856
Total	$ 2,365,786	$ 2,318,080