CONDENSED CONSOLIDATING FINANCIAL STATEMENTS - Statement of Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2018
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME
NET CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES		$ 494	$ 373
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Acquisition of property and equipment		(96)	(78)
Acquisition of business, net of cash acquired		(9,006)	0
Purchases of investments		(427)	(30)
Distributions from investments		4	23
Spectrum repack reimbursements		50	2
Other, net		(2)	(4)
Net cash flows used in investing activities		(9,477)	(87)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Proceeds from notes payable and commercial bank financing		9,453	3
Repayments of notes payable, commercial bank financing and finance leases		(715)	(154)
Debt issuance costs		(182)	0
Proceeds from the issuance of redeemable subsidiary preferred equity, net		985	0
Dividends paid on Class A and Class B Common Stock		(55)	(55)
Dividends paid on redeemable subsidiary preferred equity	$ (10)	(10)	0
Repurchase of outstanding Class A Common Stock		(125)	(46)
Distributions to noncontrolling interests		(30)	(7)
Increase (decrease) in intercompany payables		0	0
Other, net		1	1
Net cash flows from (used in) financing activities		9,322	(258)
NET INCREASE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH		339	28
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, beginning of period		1,060	996
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, end of period	1,399	1,399	1,024
Reportable legal entities \| Sinclair Broadcast Group, Inc.
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME
NET CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES		(4)	(8)
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Acquisition of property and equipment		0	0
Acquisition of business, net of cash acquired		0
Purchases of investments		(2)	(2)
Distributions from investments		0	6
Spectrum repack reimbursements		0	0
Other, net		0	0
Net cash flows used in investing activities		(2)	4
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Proceeds from notes payable and commercial bank financing		0	0
Repayments of notes payable, commercial bank financing and finance leases		0	0
Debt issuance costs		0
Proceeds from the issuance of redeemable subsidiary preferred equity, net		0
Dividends paid on Class A and Class B Common Stock		(55)	(55)
Dividends paid on redeemable subsidiary preferred equity		0
Repurchase of outstanding Class A Common Stock		(125)	(46)
Proceeds from the issuance of subsidiary equity			0
Distributions to noncontrolling interests		0	0
Increase (decrease) in intercompany payables		186	103
Other, net		0	2
Net cash flows from (used in) financing activities		6	4
NET INCREASE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH		0	0
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, beginning of period		0	0
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, end of period	0	0	0
Reportable legal entities \| Sinclair Television Group, Inc.
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME
NET CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES		(188)	(232)
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Acquisition of property and equipment		(2)	(5)
Acquisition of business, net of cash acquired		0
Purchases of investments		(32)	(5)
Distributions from investments		0	0
Spectrum repack reimbursements		0	0
Other, net		(2)	(4)
Net cash flows used in investing activities		(36)	(14)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Proceeds from notes payable and commercial bank financing		1,294	0
Repayments of notes payable, commercial bank financing and finance leases		(706)	(140)
Debt issuance costs		(15)
Proceeds from the issuance of redeemable subsidiary preferred equity, net		0
Dividends paid on Class A and Class B Common Stock		0	0
Dividends paid on redeemable subsidiary preferred equity		0
Repurchase of outstanding Class A Common Stock		0	0
Proceeds from the issuance of subsidiary equity			0
Distributions to noncontrolling interests		0	0
Increase (decrease) in intercompany payables		(1,074)	688
Other, net		1	0
Net cash flows from (used in) financing activities		(500)	548
NET INCREASE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH		(724)	302
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, beginning of period		962	645
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, end of period	238	238	947
Reportable legal entities \| Guarantor Subsidiaries and KDSM, LLC
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME
NET CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES		538	622
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Acquisition of property and equipment		(99)	(73)
Acquisition of business, net of cash acquired		0
Purchases of investments		(42)	(21)
Distributions from investments		0	0
Spectrum repack reimbursements		50	2
Other, net		0	0
Net cash flows used in investing activities		(91)	(92)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Proceeds from notes payable and commercial bank financing		0	0
Repayments of notes payable, commercial bank financing and finance leases		(3)	(3)
Debt issuance costs		0
Proceeds from the issuance of redeemable subsidiary preferred equity, net		0
Dividends paid on Class A and Class B Common Stock		0	0
Dividends paid on redeemable subsidiary preferred equity		0
Repurchase of outstanding Class A Common Stock		0	0
Proceeds from the issuance of subsidiary equity			0
Distributions to noncontrolling interests		0	0
Increase (decrease) in intercompany payables		(454)	(839)
Other, net		0	0
Net cash flows from (used in) financing activities		(457)	(842)
NET INCREASE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH		(10)	(312)
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, beginning of period		19	324
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, end of period	9	9	12
Reportable legal entities \| Non- Guarantor Subsidiaries
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME
NET CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES		157	(19)
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Acquisition of property and equipment		(4)	(3)
Acquisition of business, net of cash acquired		(9,006)
Purchases of investments		(351)	(2)
Distributions from investments		4	17
Spectrum repack reimbursements		0	0
Other, net		0	0
Net cash flows used in investing activities		(9,357)	12
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Proceeds from notes payable and commercial bank financing		8,159	3
Repayments of notes payable, commercial bank financing and finance leases		(26)	(11)
Debt issuance costs		(167)
Proceeds from the issuance of redeemable subsidiary preferred equity, net		985
Dividends paid on Class A and Class B Common Stock		0	0
Dividends paid on redeemable subsidiary preferred equity		(10)
Repurchase of outstanding Class A Common Stock		0	0
Proceeds from the issuance of subsidiary equity			0
Distributions to noncontrolling interests		(30)	(7)
Increase (decrease) in intercompany payables		1,362	61
Other, net		0	(1)
Net cash flows from (used in) financing activities		10,273	45
NET INCREASE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH		1,073	38
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, beginning of period		79	27
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, end of period	1,152	1,152	65
Eliminations
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME
NET CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES		(9)	10
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Acquisition of property and equipment		9	3
Acquisition of business, net of cash acquired		0
Purchases of investments		0	0
Distributions from investments		0	0
Spectrum repack reimbursements		0	0
Other, net		0	0
Net cash flows used in investing activities		9	3
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Proceeds from notes payable and commercial bank financing		0	0
Repayments of notes payable, commercial bank financing and finance leases		20	0
Debt issuance costs		0
Proceeds from the issuance of redeemable subsidiary preferred equity, net		0
Dividends paid on Class A and Class B Common Stock		0	0
Dividends paid on redeemable subsidiary preferred equity		0
Repurchase of outstanding Class A Common Stock		0	0
Proceeds from the issuance of subsidiary equity			0
Distributions to noncontrolling interests		0	0
Increase (decrease) in intercompany payables		(20)	(13)
Other, net		0	0
Net cash flows from (used in) financing activities		0	(13)
NET INCREASE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH		0	0
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, beginning of period		0	0
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, end of period	$ 0	$ 0	$ 0

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