Assets that are held for sale apart from normal operations and anticipated to be sold in less than one year.

No definition available.

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- Definition

Represents the amount of working capital adjustment made to acquire the entity.

+ References

No definition available.

+ Details

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Namespace Prefix:	sbgi_
Data Type:	xbrli:monetaryItemType
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- Definition

Represents the amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected definite period of benefit, expected to be sold to other entities, at lower of cost or net realizable value.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Represents the amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized, expected to be sold to other entities, at lower of cost or net realizable value.

+ References

No definition available.

+ Details

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Namespace Prefix:	sbgi_
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- Details

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- Definition

Amount classified as assets attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer.

+ References

+ Details

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- Definition

Amount classified as accounts, notes and loans receivable attributable to disposal group held for sale or disposed of.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount classified as accounts payable attributable to disposal group held for sale or disposed of.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount classified as accounts payable and accrued liabilities attributable to disposal group held for sale or disposed of.

+ References

+ Details

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Period Type:	instant

- Definition

Amount classified as accounts payable and accrued liabilities attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount classified as prepaid and other assets attributable to disposal group held for sale or disposed of.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount classified as property, plant and equipment attributable to disposal group held for sale or disposed of.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 45

-Paragraph 10

-URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e1107-107759

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1436-107760

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount classified as liabilities attributable to disposal group held for sale or disposed of.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The value of all consideration given or received by the Entity in the significant acquisition or disposal.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Details

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- Details

Name:	dei_LegalEntityAxis=sbgi_MediaGeneralMember
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- Details

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- Details

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DISPOSITION OF ASSETS (Details) (USD $)	Dec. 31, 2014	Mar. 31, 2015	Aug. 01, 2014	Sep. 30, 2014
Assets:
Accounts receivable	$ 5,101,000
Prepaid expenses and other current assets	1,403,000
Total current assets held for sale	6,504,000
Property and equipment	1,036,000
Goodwill	2,975,000sbgi_GoodwillHeldForSale
Definite-lived intangible assets	2,962,000
Total assets held for sale	13,477,000sbgi_AssetsHeldForSale
Liabilities:
Accounts payable	1,096,000
Accrued liabilities	1,360,000
Current portion of notes payable, capital leases and commercial bank financing	21,000
Total liabilities held for sale	2,477,000
Non License Broadcast Assets
Assets:
Property and equipment	1,800,000	1,800,000
Allbritton
Discontinued Operations [Line Items]
Working capital adjustment			50,200,000
MEG Stations \| WTTA & KXRM And KXTU
Discontinued Operations [Line Items]
Price of assets sold	93,100,000
Working capital adjustment	600,000
MEG Stations \| Allbritton \| WHTM
Discontinued Operations [Line Items]
Price of assets sold				83,400,000
Working capital adjustment				200,000
Cunningham \| Allbritton \| WTAT
Discontinued Operations [Line Items]
Price of assets sold			$ 14,000,000