INCOME TAXES - COMPONENTS OF INCOME TAX EXPENSE (BENEFIT) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
Federal	$ 391,705	$ 409,060	$ 385,642
State	51,706	47,978	52,331
Foreign	(25,877)	(29,605)	2,362
Current provision for income taxes	417,534	427,433	440,335
Deferred:
Federal	(7,706)	(31,153)	20,649
State	(452)	(2,346)	2,725
Foreign	(29,939)	(5,038)	(4,578)
Deferred income tax provision	(38,097)	(38,537)	18,796
Total provision for income taxes	$ 379,437	$ 388,896	$ 459,131