LEASES (Summary of Total Lease Cost) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Leases
Operating lease cost	$ 87,363	$ 83,461	$ 174,582	$ 166,656
Short-term operating lease cost	1,661	941	3,594	2,725
Variable operating lease cost	22,645	20,776	44,589	41,109
Sublease income	(1,185)	(1,187)	(2,383)	(2,362)
Total lease cost	$ 110,484	$ 103,991	$ 220,382	$ 208,128