Guarantor Obligation, Amount Sought

No definition available.

Name:	sbgi_GuarantorObligationAmountSought
Namespace Prefix:	sbgi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Litigation Settlement, Compliance Plan Term

+ References

No definition available.

+ Details

Name:	sbgi_LitigationSettlementCompliancePlanTerm
Namespace Prefix:	sbgi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Litigation Settlement, Number of Petitions Filed

+ References

No definition available.

+ Details

Name:	sbgi_LitigationSettlementNumberofPetitionsFiled
Namespace Prefix:	sbgi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Loss Contingency, Damages Sought, Total

+ References

No definition available.

+ Details

Name:	sbgi_LossContingencyDamagesSoughtTotal
Namespace Prefix:	sbgi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Loss Contingency, Damages Sought, Value Per Station

+ References

No definition available.

+ Details

Name:	sbgi_LossContingencyDamagesSoughtValuePerStation
Namespace Prefix:	sbgi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Loss Contingency, Issuance of Forfeiture Penalty Upheld

+ References

No definition available.

+ Details

Name:	sbgi_LossContingencyIssuanceOfForfeiturePenaltyUpheld
Namespace Prefix:	sbgi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Loss Contingency, Number of Other Broadcasters

+ References

No definition available.

+ Details

Name:	sbgi_LossContingencyNumberOfOtherBroadcasters
Namespace Prefix:	sbgi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Loss Contingency, Voluntary Contribution

+ References

No definition available.

+ Details

Name:	sbgi_LossContingencyVoluntaryContribution
Namespace Prefix:	sbgi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the number of television stations owned by the entity.

+ References

No definition available.

+ Details

Name:	sbgi_NumberOfTelevisionStationsOwned
Namespace Prefix:	sbgi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount awarded to other party in judgment or settlement of litigation.

+ References

No definition available.

+ Details

Name:	us-gaap_LitigationSettlementAmountAwardedToOtherParty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-9

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-4

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-9

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 720
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483359/720-20-50-1

Reference 5: http://www.xbrl.org/2003/role/exampleRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 27
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482395/460-10-55-27

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-9

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-4

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482425/460-10-50-3

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-1

+ Details

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

- Definition

The value (monetary amount) of the award the plaintiff seeks in the legal matter.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-4

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-9

+ Details

Name:	us-gaap_LossContingencyDamagesSoughtValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The total number of new claims filed pertaining to a loss contingency during the period.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-4

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-9

+ Details

Name:	us-gaap_LossContingencyNewClaimsFiledNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of cash paid for the settlement of litigation or for other legal issues during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 25
-Subparagraph (g)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-25

+ Details

Name:	us-gaap_PaymentsForLegalSettlements
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	srt_CounterpartyNameAxis=sbgi_MarqueeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=us-gaap_UnfavorableRegulatoryActionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_LitigationCaseAxis=sbgi_BreachOfMergerAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_LitigationCaseAxis=sbgi_VariousCasesAllegingViolationOfShermanAntitrustActMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

COMMITMENTS AND CONTINGENCIES (Details) $ in Thousands										1 Months Ended
COMMITMENTS AND CONTINGENCIES (Details) $ in Thousands	Dec. 08, 2023 USD ($)	Sep. 21, 2022 USD ($) station	Jul. 28, 2021 USD ($)	Oct. 15, 2020 USD ($)	Sep. 02, 2020 USD ($)	Aug. 19, 2020 USD ($)	Jun. 08, 2020 petition	May 22, 2020 USD ($)	Nov. 06, 2018 lawsuit	Dec. 31, 2017 USD ($)	Mar. 31, 2026 station	Jul. 09, 2025 USD ($)	Jun. 27, 2025 USD ($)	Jul. 19, 2024 USD ($)	Oct. 03, 2018 broadcaster
Loss Contingencies [Line Items]
Number of television stations owned \| station											177
Marquee
Loss Contingencies [Line Items]
Guarantee, amount sought														$ 29,000
Unfavorable Regulatory Action
Loss Contingencies [Line Items]
Proposed fine		$ 2,700			$ 9,000					$ 13,000
Proposed fine per station				$ 25	$ 500
Issuance of forfeiture penalty upheld			$ 500
Number of television stations owned \| station		83
Loss contingency, damages sought, total		$ 3,400
Voluntary contribution												$ 500	$ 500
Unfavorable Regulatory Action \| Minimum
Loss Contingencies [Line Items]
Proposed fine per station		20
Unfavorable Regulatory Action \| Maximum
Loss Contingencies [Line Items]
Proposed fine per station		$ 26
Breach of Merger Agreement
Loss Contingencies [Line Items]
Amount awarded to other party								$ 48,000
Cash payments for legal settlements						$ 48,000
Compliance plan term								4 years
Number of petitions filed \| petition							2
Various Cases Alleging Violation of Sherman Antitrust Act
Loss Contingencies [Line Items]
Amount awarded to other party	$ 48,000
Loss contingency, new claims filed, number (lawsuit) \| lawsuit									22
Loss contingency, number of other broadcasters \| broadcaster															13