FAIR VALUE (FAIR VALUE ASSETS AND LIABILITIES) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Liabilities [Abstract]
Contingent consideration	$ (18,909)	$ (18,032)
Redeemable noncontrolling interest	(54,674)	(52,976)	$ (53,367)	$ (48,923)
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets [Abstract]
Derivative assets, net	0
Total assets	0
Liabilities [Abstract]
Deferred compensation plan liability	0
Derivative instruments, net	0
Contingent consideration	0
Total liabilities	0
Redeemable noncontrolling interest	0
Significant Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Derivative assets, net	7,659	11,375
Total assets	7,659	11,375
Liabilities [Abstract]
Deferred compensation plan liability	(25,781)	(23,858)
Derivative instruments, net	0
Contingent consideration	0
Total liabilities	(25,781)	(23,858)
Redeemable noncontrolling interest	0
Significant Unobservable Inputs (Level 3) [Member]
Assets [Abstract]
Derivative assets, net	0
Total assets	0
Liabilities [Abstract]
Deferred compensation plan liability	0
Derivative instruments, net	0
Contingent consideration	(18,909)	(18,032)
Total liabilities	(18,909)	(18,032)
Redeemable noncontrolling interest	$ (54,674)	$ (52,976)