GOODWILL, BROADCAST LICENCES AND OTHER INTANGIBLE ASSETS - Change in Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Goodwill [Line Items]
Goodwill, gross	$ 2,364,875	$ 2,378,126
Accumulated impairment losses	(413,573)	(413,573)
Goodwill [Roll Forward]
Goodwill	1,964,553
Goodwill adjustment		(16,226)
Change is assets held for sale		2,975
Goodwill	1,951,302	1,964,553
Other operating divisions segment
Goodwill [Line Items]
Goodwill, gross	3,488	513
Accumulated impairment losses	0	0
Goodwill [Roll Forward]
Goodwill	513
Goodwill adjustment		0
Change is assets held for sale		2,975
Goodwill	3,488	513
Broadcast
Goodwill [Line Items]
Goodwill, gross	2,361,387	2,377,613
Accumulated impairment losses	(413,573)	(413,573)
Goodwill [Roll Forward]
Goodwill	1,964,040
Goodwill adjustment		(16,226)
Change is assets held for sale		0
Goodwill	$ 1,947,814	$ 1,964,040