GOODWILL, INDEFINTE-LIVED INTANGIBLE ASSETS AND OTHER INTANGIBLE ASSETS - Change in Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Change in the carrying amount of goodwill related to continuing operations
Goodwill	$ 2,344,666	$ 2,378,126
Accumulated impairment losses	(413,573)	(413,573)
Goodwill, net	1,931,093	1,964,553
Acquisitions	65,053	5,802
Measurement period adjustments related to prior year acquisitions	40	(42,237)
Change in assets held for sale		2,975
Disposition of assets	(5,440)
Goodwill	2,404,319	2,344,666
Accumulated impairment losses	(413,573)	(413,573)
Goodwill, net	1,990,746	1,931,093
VIEs which are not primary beneficiary
Change in the carrying amount of goodwill related to continuing operations
Goodwill, net	800
Goodwill, net	800	800
Broadcast
Change in the carrying amount of goodwill related to continuing operations
Goodwill	2,341,178	2,377,613
Accumulated impairment losses	(413,573)	(413,573)
Goodwill, net	1,927,605	1,964,040
Acquisitions	11,626	5,802
Measurement period adjustments related to prior year acquisitions	40	(42,237)
Change in assets held for sale		0
Disposition of assets	(5,440)
Goodwill	2,347,404	2,341,178
Accumulated impairment losses	(413,573)	(413,573)
Goodwill, net	1,933,831	1,927,605
Other
Change in the carrying amount of goodwill related to continuing operations
Goodwill	3,488	513
Accumulated impairment losses	0	0
Goodwill, net	3,488	513
Acquisitions	53,427	0
Measurement period adjustments related to prior year acquisitions	0	0
Change in assets held for sale		2,975
Disposition of assets	0
Goodwill	56,915	3,488
Accumulated impairment losses	0	0
Goodwill, net	$ 56,915	$ 3,488