INCOME TAXES - Classification and Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Domestic and foreign components of company's income before income taxes
Domestic	$ 1,062,713	$ 1,029,763	$ 859,039
Foreign	138,910	49,922	32,509
INCOME BEFORE PROVISION FOR INCOME TAXES	1,201,623	1,079,685	891,548
Intercompany royalties, management fees and interest charges from the Company's domestic to foreign entities	42,500	25,600	29,400
Current:
Federal	243,127	212,283	548,018
State	43,252	35,756	88,671
Foreign	27,522	17,171	10,634
Total current provision	313,901	265,210	647,323
Deferred:
Federal	61,797	87,360	(255,422)
State	3,062	15,254	(40,446)
Foreign	(4,579)	(9,709)	(5,420)
Total deferred provision	60,280	92,905	(301,288)
Valuation allowance	6,764	8,885	(1,220)
Total provision for income taxes	$ 380,945	$ 367,000	$ 344,815
Federal statutory rate (as a percent)	35.00%	35.00%	35.00%
Reconciliation of income tax expense
U.S. Federal tax expense at statutory rates	$ 420,568	$ 377,599	$ 312,042
State income taxes, net of federal tax benefit	27,569	33,148	31,046
Permanent differences	10,356	954	5,285
Stock based compensation	(79,687)	(13,654)	3,203
Domestic production deduction	(22,229)	(21,447)
Deferred tax asset reduction (Tax Reform Act)	39,763
Other	3,736	(8,765)	(127)
Foreign rate differential	(25,895)	(9,720)	(5,414)
Valuation allowance	6,764	8,885	(1,220)
Total provision for income taxes	$ 380,945	$ 367,000	$ 344,815