SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: (Details 2) (USD $)	3 Months Ended		9 Months Ended				3 Months Ended	9 Months Ended				3 Months Ended		9 Months Ended			9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2014 Allbritton	Sep. 30, 2014 Allbritton	Jul. 31, 2014 Allbritton station	Sep. 30, 2014 Eliminations	Dec. 31, 2013 Eliminations	Sep. 30, 2014 Consolidated VIEs, aggregated	Sep. 30, 2013 Consolidated VIEs, aggregated	Sep. 30, 2014 Consolidated VIEs, aggregated VIE	Sep. 30, 2013 Consolidated VIEs, aggregated VIE	Dec. 31, 2013 Consolidated VIEs, aggregated	Sep. 30, 2014 Consolidated VIEs, aggregated Minimum	Sep. 30, 2014 Consolidated VIEs, aggregated Cunningham station	Sep. 30, 2014 Consolidated VIEs Cunningham station	Sep. 30, 2013 Consolidated VIEs Cunningham	Sep. 30, 2014 Consolidated VIEs Cunningham station	Sep. 30, 2013 Consolidated VIEs Cunningham	Sep. 30, 2014 Consolidated VIEs Eliminations	Dec. 31, 2013 Consolidated VIEs Eliminations	Sep. 30, 2014 Consolidated VIEs Eliminations Cunningham	Dec. 31, 2013 Consolidated VIEs Eliminations Cunningham
Variable Interest Entities
Number of television stations owned									9										6		6
Number of stations to which sales and other non-programming support services are provided																		3
Number of licensees as VIEs														19	13
Initial term of certain outsourcing agreements																	5 years
Net revenues	$ 448,056,000	$ 303,028,000	$ 1,226,088,000	$ 835,223,000			$ 41,200,000	$ 41,200,000				$ 42,900,000	$ 31,900,000	$ 124,700,000	$ 90,100,000				$ 26,000,000	$ 25,900,000	$ 82,500,000	$ 80,300,000
CURRENT ASSETS:
Cash and cash equivalents	99,350,000	228,994,000	99,350,000	228,994,000	280,104,000	22,865,000						2,891,000		2,891,000		4,916,000
Accounts receivable	327,618,000		327,618,000		308,974,000							17,426,000		17,426,000		18,468,000
Current portion of program contract costs	107,403,000		107,403,000		74,324,000							12,207,000		12,207,000		10,725,000
Prepaid expenses and other current assets	32,473,000		32,473,000		30,599,000							1,627,000		1,627,000		247,000
Total current assets	573,276,000		573,276,000		697,871,000					(50,357,000)	(7,468,000)	34,151,000		34,151,000		34,356,000
PROGRAM CONTRACT COSTS, less current portion	42,917,000		42,917,000		24,708,000							6,786,000		6,786,000		5,075,000
PROPERTY AND EQUIPMENT, net	712,677,000		712,677,000		596,071,000					(6,254,000)	(7,443,000)	10,389,000		10,389,000		11,081,000
GOODWILL	1,820,042,000		1,820,042,000		1,380,082,000							800,000		800,000		6,357,000
BROADCAST LICENSES	125,330,000		125,330,000		101,029,000							16,860,000		16,860,000		16,768,000
DEFINITE-LIVED INTANGIBLE ASSETS, net	1,652,634,000		1,652,634,000		1,127,755,000							90,702,000		90,702,000		97,496,000
OTHER ASSETS	222,202,000		222,202,000		208,209,000							1,212,000		1,212,000		22,935,000
Total assets (a)	5,294,256,000	3,617,673,000	5,294,256,000	3,617,673,000	4,147,472,000					(4,519,434,000)	(3,527,513,000)	160,900,000		160,900,000		194,068,000
CURRENT LIABILITIES:
Accounts payable	18,814,000		18,814,000		13,989,000							892,000		892,000		86,000
Accrued liabilities	263,836,000		263,836,000		182,185,000							3,969,000		3,969,000		2,536,000
Current portion of notes payable, capital leases and commercial bank financing	43,130,000		43,130,000		46,346,000							3,484,000		3,484,000		5,731,000
Current portion of program contracts payable	118,300,000		118,300,000		90,933,000							10,502,000		10,502,000		11,552,000
Total current liabilities	463,027,000		463,027,000		343,381,000					(49,567,000)	(3,295,000)	18,847,000		18,847,000		19,905,000
LONG-TERM LIABILITIES:
Notes payable, capital leases and commercial bank financing, less current portion	3,725,185,000		3,725,185,000		2,966,402,000							27,553,000		27,553,000		49,850,000
Program contracts payable, less current portion	63,806,000		63,806,000		34,681,000							9,933,000		9,933,000		6,597,000
Long term liabilities												9,705,000		9,705,000		10,838,000
Total liabilities	4,939,813,000		4,939,813,000		3,741,768,000					(873,847,000)	(710,321,000)	66,038,000		66,038,000		87,190,000
Liabilities associated with the certain LMAs and outsourcing agreements and purchase options																							67,200,000	59,900,000
Total cumulative payments made under the LMA excluded from liabilities																									33,500,000	32,400,000
Total capital leased liabilities excluded from VIE consolidation																									$ 8,700,000	$ 11,200,000