QUARTERLY RESULTS OF OPERATIONS (Unaudited) (Detail) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	2 Months Ended	3 Months Ended							4 Months Ended	8 Months Ended	12 Months Ended
	May 01, 2019	May 01, 2019	Jun. 30, 2019	Dec. 31, 2019	Sep. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	May 01, 2019	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Revenue		$ 277,674	$ 635,646	$ 1,026,072	$ 948,338	$ 795,797	$ 1,026,295	$ 920,492	$ 891,764	$ 772,772	$ 1,073,471	$ 2,610,056		$ 3,611,323	$ 3,586,647
Operating expenses:
Direct operating expenses		92,581	184,291	332,147	290,971	267,115	288,949	268,606	263,752	241,066	359,696	807,409		1,062,373	1,059,123
Selling, general and administrative expenses		103,552	227,140	368,313	341,353	332,793	373,203	329,436	328,200	346,092	436,345	936,806		1,376,931	1,346,063
Corporate expenses		18,979	34,390	64,148	70,044	47,041	65,433	56,699	52,478	52,898	66,020	168,582		227,508	208,648
Depreciation and amortization		14,544	59,383	94,972	95,268	38,290	36,405	43,295	64,877	67,374	52,834	249,623		211,951	275,304
Impairment charges		0	0	0	0	91,382	0	33,150	0	0	91,382	0		33,150	6,040
Other operating income (expense), net		(127)	3,246	(1,366)	(9,880)	(27)	(2,354)	(2,462)	(1,218)	(3,232)	(154)	(8,000)		(9,266)	9,313
Operating income (loss)		47,891	133,688	165,126	140,822	19,149	259,951	186,844	181,239	62,110	67,040	439,636		690,144	700,782
Interest expense							955	2,097	10,613	321,133
Gain (loss) on investments, net							(9,833)	186	9,175	0
Interest expense (income), net		(400)	69,711	96,095	100,967	(99)					499	(266,773)		(334,798)	(1,484,435)
Gain on extinguishment of debt		0	0	(22,663)	1,735	(10,237)					0	0		100	1,271
Equity in earnings (loss) of nonconsolidated affiliates		(59)	(24)	(254)	(1)	(7)	209	(30)	(32)	(31)	(66)	(279)		116	(1,865)
Other expense, net		150	(9,157)	3,348	(12,457)	(127)	(252)	(281)	(2,058)	(20,416)	23	(18,266)		(23,007)	(43,851)
Reorganization items, net	$ (7,082,213)	9,497,944	0	0	0	(36,118)	(42,849)	(52,475)	(68,740)	(192,055)	9,461,826	0		(356,119)	0
Income (loss) from continuing operations before income taxes		9,546,326	54,796	49,462	29,132	(27,241)	206,271	132,147	108,971	(471,525)	9,519,085	133,390		(24,136)	(833,196)
Income tax benefit (expense)		(100,289)	(16,003)	12,670	(16,758)	61,194	(23,664)	(10,873)	(142,032)	162,733	(39,095)	(20,091)	$ (39,095)	(13,836)	177,188
Income from continuing operations		9,446,037	38,793	62,132	12,374	33,953	182,607	121,274	(33,061)	(308,792)
Income (loss) from discontinued operations, net of tax		1,854,677	0	0	0	(169,554)	42,301	(49,491)	(33,229)	(124,248)	1,685,123	0		(164,667)	197,297
Net income (loss)		11,300,714	38,793	62,132	12,374	(135,601)	224,908	71,783	(66,290)	(433,040)	11,165,113	113,299		(202,639)	(458,711)
Less amount attributable to noncontrolling interest		(2,190)	0	(751)	0	21,218	(10,003)	(1,705)	(3,609)	16,046	19,028	(751)		729	60,651
Net income (loss) attributable to the Company		$ 11,298,524	$ 38,793	$ 61,381	$ 12,374	$ (114,383)	$ 214,905	$ 70,078	$ (69,899)	$ (416,994)	$ 11,184,141	$ 112,548		$ (201,910)	$ (398,060)
Net income (loss) to the Company per common share:
From continuing operations - Basic (in dollars per share)		$ 110.28	$ 0.27	$ 0.42	$ 0.08	$ 0.40	$ 2.14	$ 1.42	$ (0.39)	$ (3.62)	$ 109.92	$ 0.77		$ (0.44)	$ (7.71)
From discontinued operations - Basic (in dollars per share)		21.63	0.00	0.00	0.00	(1.73)	0.37	(0.60)	(0.43)	(1.27)	19.76	0.00		(1.93)	3.02
From continuing operations - Diluted (in dollars per share)		110.28	0.27	0.42	0.08	0.40	2.14	1.42	(0.39)	(3.62)	109.92	0.77		(0.44)	(7.71)
From discontinued operations - Diluted (in dollars per share)		$ 21.63	$ 0.00	$ 0.00	$ 0.00	$ (1.73)	$ 0.37	$ (0.60)	$ (0.43)	$ (1.27)	$ 19.76	$ 0.00		$ (1.93)	$ 3.02