CONDENSED CONSOLIDATING FINANCIAL STATEMENTS (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME
Net revenue	$ 504,775	$ 412,648
Program and production	171,015	127,039
Selling, general and administrative	117,903	97,760
Depreciation, amortization and other operating expenses	131,310	106,849
Total operating expenses	420,228	331,648
Operating income	84,547	81,000
Interest expense	(46,648)	(39,538)
Other income (expense)	3,364	1,015
Total other expense, net	(43,284)	(38,523)
Income tax benefit (provision)	(16,427)	(14,820)
NET INCOME	24,836	27,657
Net income attributable to the noncontrolling interests	(554)	(499)
NET INCOME ATTRIBUTABLE TO SINCLAIR BROADCAST GROUP	24,282	27,158
Comprehensive income (loss)	24,920	27,696
Reportable legal entities | Sinclair Broadcast Group, Inc
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME
Selling, general and administrative	1,045	885
Depreciation, amortization and other operating expenses	266	267
Total operating expenses	1,311	1,152
Operating income	(1,311)	(1,152)
Equity in earnings of consolidated subsidiaries	24,325	26,687
Interest expense	(102)	(159)
Other income (expense)	1,350	646
Total other expense, net	25,573	27,174
Income tax benefit (provision)	20	1,136
NET INCOME	24,282	27,158
NET INCOME ATTRIBUTABLE TO SINCLAIR BROADCAST GROUP	24,282	27,158
Comprehensive income (loss)	24,920	27,696
Reportable legal entities | Sinclair Television Group, Inc.
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME
Program and production		76
Selling, general and administrative	14,783	14,545
Depreciation, amortization and other operating expenses	775	1,107
Total operating expenses	15,558	15,728
Operating income	(15,558)	(15,728)
Equity in earnings of consolidated subsidiaries	64,465	62,264
Interest expense	(43,873)	(36,748)
Other income (expense)	(154)	296
Total other expense, net	20,438	25,812
Income tax benefit (provision)	20,615	17,267
NET INCOME	25,495	27,351
NET INCOME ATTRIBUTABLE TO SINCLAIR BROADCAST GROUP	25,495	27,351
Comprehensive income (loss)	25,579	27,265
Reportable legal entities | Guarantor Subsidiaries and KDSM, LLC
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME
Net revenue	476,670	390,080
Program and production	169,693	126,733
Selling, general and administrative	99,347	80,502
Depreciation, amortization and other operating expenses	102,360	86,390
Total operating expenses	371,400	293,625
Operating income	105,270	96,455
Equity in earnings of consolidated subsidiaries	(50)
Interest expense	(1,176)	(1,242)
Other income (expense)	64	93
Total other expense, net	(1,162)	(1,149)
Income tax benefit (provision)	(38,377)	(33,042)
NET INCOME	65,731	62,264
NET INCOME ATTRIBUTABLE TO SINCLAIR BROADCAST GROUP	65,731	62,264
Comprehensive income (loss)	65,731	62,264
Reportable legal entities | Non-Guarantor Subsidiaries
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME
Net revenue	47,004	41,427
Program and production	19,849	18,411
Selling, general and administrative	2,640	2,400
Depreciation, amortization and other operating expenses	28,250	19,160
Total operating expenses	50,739	39,971
Operating income	(3,735)	1,456
Interest expense	(6,706)	(6,553)
Other income (expense)	2,104
Total other expense, net	(4,602)	(6,553)
Income tax benefit (provision)	1,315	(181)
NET INCOME	(7,022)	(5,278)
Net income attributable to the noncontrolling interests	(554)	(499)
NET INCOME ATTRIBUTABLE TO SINCLAIR BROADCAST GROUP	(7,576)	(5,777)
Comprehensive income (loss)	(7,576)	(5,652)
Eliminations
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME
Net revenue	(18,899)	(18,859)
Program and production	(18,527)	(18,181)
Selling, general and administrative	88	(572)
Depreciation, amortization and other operating expenses	(341)	(75)
Total operating expenses	(18,780)	(18,828)
Operating income	(119)	(31)
Equity in earnings of consolidated subsidiaries	(88,740)	(88,951)
Interest expense	5,209	5,164
Other income (expense)		(20)
Total other expense, net	(83,531)	(83,807)
NET INCOME	(83,650)	(83,838)
NET INCOME ATTRIBUTABLE TO SINCLAIR BROADCAST GROUP	(83,650)	(83,838)
Comprehensive income (loss)	$ (83,734)	$ (83,877)