v3.25.4

Program Rights and Obligations (Narrative) (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Entertainment, Film [Line Items] |  |  |
Predominantly Monetized as a Group |  |  | $ 282,954,000
Predominantly Monetized as a Group |  |  | 465,519,000
Program rights write-offs | $ 0 | $ 20,700,000 | 17,300,000
Program write-offs, restructuring and other related charges | 6,700,000 | 44,200,000 | $ 0
Film, Monetized in Film Group, Amortization Expense, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  | Technical and operating (excluding depreciation and amortization)
Restructuring Charges |  |  |
Entertainment, Film [Line Items] |  |  |
Predominantly Monetized as a Group | 700,000 | 38,300,000 |
Predominantly Monetized as a Group | $ 6,000,000 | $ 5,900,000 |
Film, Monetized in Film Group, Amortization Expense, Statement of Income or Comprehensive Income [Extensible Enumeration] | Restructuring and other related charges | Restructuring and other related charges |

X
- Definition Entertainment, Film [Line Items] + References No definition available. + Details
Name: | amcx_EntertainmentFilmLineItems
Namespace Prefix: | amcx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Entertainment, License Agreement for Program Material, Monetized in Film Group, Amortization Expense + References No definition available. + Details
Name: | amcx_EntertainmentLicenseAgreementForProgramMaterialMonetizedInFilmGroupAmortizationExpense
Namespace Prefix: | amcx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The write-off of unamortized costs for program rights (including feature films and episodic series, acquired under license agreements or owned original program rights). + References No definition available. + Details
Name: | amcx_ProgramRightsWriteOffs
Namespace Prefix: | amcx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Program Write-Offs, Restructuring and Other Related Charges + References No definition available. + Details
Name: | amcx_ProgramWriteOffsRestructuringAndOtherRelatedCharges
Namespace Prefix: | amcx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of amortization expense for capitalized film cost for film predominantly monetized with other films and license agreements. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 926 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483154/926-20-50-4A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (l) -Publisher FASB -URI https://asc.fasb.org/1943274/2147476148/220-40-50-21 + Details
Name: | us-gaap_FilmMonetizedInFilmGroupAmortizationExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Indicates line item in statement of income or comprehensive income that includes amortization expense for film cost for film predominantly monetized with other films and license agreements. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 926 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483154/926-20-50-4A + Details
Name: | us-gaap_FilmMonetizedInFilmGroupAmortizationExpenseStatementOfIncomeExtensibleList
Namespace Prefix: | us-gaap_
Data Type: | enum2:enumerationSetItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_RestructuringChargesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |