STOCKHOLDERS' DEFICIT - Schedule of Changes in Shareholders' Deficit (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
Increase Decrease In Stockholders Equity
Beginning balance				$ (10,885,475)				$ (10,606,681)	$ (10,885,475)	$ (10,606,681)	$ (9,665,208)
Net income (loss)	$ 341,763	$ (246,184)	$ (168,017)	(387,580)	$ 123,397	$ (28,530)	$ (276,043)	(58,874)	(460,018)	(240,050)	(737,634)
Dividends and other payments to noncontrolling interests									(46,151)	(70,412)	(52,384)
Purchase of additional noncontrolling interests									(1,227)	0	42,797
Disposal of noncontrolling interests									(2,439)	(36,846)
Share-based compensation									12,078	13,133	11,067
Foreign currency translation adjustments									45,661	21,983	(114,906)
Unrealized holding gain (loss) on marketable securities									(414)	(576)	553
Other adjustments to comprehensive loss									6,720	(11,814)	(10,266)
Reclassifications adjustments									5,441	46,730	808
Other, net									(1,631)	(942)
Ending balance	(11,327,455)				(10,885,475)				(11,327,455)	(10,885,475)	(10,606,681)
The Company
Increase Decrease In Stockholders Equity
Beginning balance				(11,021,253)				(10,784,841)	(11,021,253)	(10,784,841)
Net income (loss)									(393,891)	(296,362)
Purchase of additional noncontrolling interests									(524)	(1,224)
Share-based compensation									2,488	2,842
Foreign currency translation adjustments									32,809	27,343
Unrealized holding gain (loss) on marketable securities									(370)	(518)
Other adjustments to comprehensive loss									6,013	(10,622)
Reclassifications adjustments									4,864	42,328
Other, net									(355)	(199)
Ending balance	(11,370,219)				(11,021,253)				(11,370,219)	(11,021,253)	(10,784,841)
Noncontrolling Interests
Increase Decrease In Stockholders Equity
Beginning balance				$ 135,778				$ 178,160	135,778	178,160	224,533
Net income (loss)									(66,127)	56,312	17,140
Dividends and other payments to noncontrolling interests									(46,151)	(70,412)	(52,384)
Purchase of additional noncontrolling interests									(703)	1,224	1,978
Disposal of noncontrolling interests									(2,439)	(36,846)
Share-based compensation									9,590	10,291
Foreign currency translation adjustments									12,852	(5,360)
Unrealized holding gain (loss) on marketable securities									(44)	(58)
Other adjustments to comprehensive loss									707	(1,192)
Reclassifications adjustments									577	4,402
Other, net									(1,276)	(743)
Ending balance	$ 42,764				$ 135,778				$ 42,764	$ 135,778	$ 178,160