Borrowings - Schedule of Outstanding Debt (Details) - NCM, LLC. - USD ($) $ in Millions |
9 Months Ended | ||||||||
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Oct. 01, 2026 |
Sep. 18, 2026 |
Jan. 01, 2026 |
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| Debt Instrument [Line Items] | |||||||||
| Outstanding borrowings | $ 285.0 | $ 12.0 | |||||||
| Less: debt issuance costs and debt discounts related to term loans and senior notes | (7.9) | 0.0 | |||||||
| Long-term Debt | 277.1 | 12.0 | |||||||
| Less: current portion of debt | (5.2) | 0.0 | |||||||
| Carrying value of long-term debt | 271.9 | 12.0 | |||||||
| 2025 Credit Facility | |||||||||
| Debt Instrument [Line Items] | |||||||||
| Outstanding borrowings | [1] | $ 0.0 | 12.0 | ||||||
| Debt instrument, maturity date | Jan. 24, 2028 | ||||||||
| 2026 Revolving Credit Facility | |||||||||
| Debt Instrument [Line Items] | |||||||||
| Outstanding borrowings | [2] | $ 10.0 | 0.0 | ||||||
| Debt instrument, maturity date | Sep. 18, 2031 | ||||||||
| 2026 Term Loan Facility | |||||||||
| Debt Instrument [Line Items] | |||||||||
| Outstanding borrowings | $ 275.0 | [2] | $ 275.0 | $ 0.0 | [2] | ||||
| Debt instrument, maturity date | Sep. 18, 2031 | ||||||||
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of unamortized debt discount (premium) and debt issuance costs. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as current. Excludes lease obligation. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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