INCOME TAXES - Reconciliation of Income Tax to Income Tax Benefit (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Amount
Income tax benefit at statutory rates									$ 321,098	$ 101,683	$ 227,737
State income taxes, net of federal tax effect									7,667	6,372	17,795
Foreign income taxes									(20,438)	(21,477)	(23,474)
Nondeductible items									(6,659)	(5,760)	(5,764)
Changes in valuation allowance and other estimates									(350,407)	(31,229)	(302,935)
U.S. tax reform									510,064	0	0
Other, net									(3,919)	885	(316)
Income tax benefit (expense)	$ 507,549	$ (2,051)	$ (17,408)	$ (30,684)	$ 92,717	$ (5,613)	$ (27,137)	$ (9,493)	$ 457,406	$ 50,474	$ (86,957)
Percent
Income tax benefit at statutory rates									35.00%	35.00%	35.00%
State income taxes, net of federal tax effect									0.80%	2.20%	2.70%
Foreign income taxes									(2.20%)	(7.40%)	(3.60%)
Nondeductible items									(0.70%)	(2.00%)	(0.90%)
Changes in valuation allowance and other estimates									(38.20%)	(10.70%)	(46.60%)
U.S. tax reform									55.60%	(0.00%)	(0.00%)
Other, net									(0.40%)	0.30%	(0.00%)
Income tax benefit (expense)									49.90%	17.40%	(13.40%)