Earnings Per Share [Abstract] Loss Per Share Earnings Per Share [Text Block] Related Party Transactions [Abstract] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Investment, Name [Axis] Investment, Name [Axis] Investment, Name [Domain] Investment, Name [Domain] A C J V L L C [Member] A C J V L L C [Member] AC JV, LLC. Related Party Related Party [Axis] Related Party Related Party [Domain] AMC American Multi Cinema Inc [Member] American Multi-Cinema, Inc. Cinemark Cinemark Holdings Inc [Member] Cinemark holdings, Inc. Regal Regal Entertainment Group [Member] Regal entertainment group. Founding Members Related Party Founding Members [Member] Related Party Founding Members [Member[ NCM Inc. National Cine Media Inc [Member] National CineMedia, Inc. Related Party Transaction [Line Items] Related Party Transaction [Line Items] Document Period End Date Document Period End Date Income (Loss) from Equity Method Investments Income (Loss) from Equity Method Investments Cash distributions declared to members Distribution Made to Limited Liability Company (LLC) Member, Cash Distributions Declared Goodwill and Intangible Assets Disclosure [Abstract] Intangible Assets Intangible Assets Disclosure [Text Block] Fair Value Disclosures [Abstract] Gross unrealized losses related to individual securities Debt Securities, Available-for-sale, Unrealized Loss Gross unrealized losses related to individual securities had been in continuous loss position for 12 months or longer Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Equity Components Equity Components [Axis] Equity Component Equity Component [Domain] Common Stock Common Stock [Member] Additional Paid in Capital (Deficit) Additional Paid-in Capital [Member] Retained Earnings (Distribution in Excess of Earnings) Retained Earnings [Member] Noncontrolling Interest Noncontrolling Interest [Member] Statement [Line Items] Statement [Line Items] Balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Balance (in shares) Common Stock, Shares, Outstanding Distributions to founding members Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Cumulative Effect of New Accounting Principle in Period of Adoption (Deprecated 2020-01-31) Cumulative Effect of Adoption of ASU 2016-13, Adjustment to Retained Earnings Cumulative Effect of Adoption of ASU 2016-13, Adjustment to Retained Earnings NCM LLC equity issued for purchase of intangible asset Noncontrolling Interest, Increase from Subsidiary Equity Issuance Income tax and other impacts of NCM LLC ownership changes Adjustments to Additional Paid in Capital, Other Comprehensive income, net of tax Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Share-based compensation issued Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture Share-based compensation issued (in shares) Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture Share-based compensation expense/capitalized APIC, Share-based Payment Arrangement, Increase for Cost Recognition Cash dividends declared Dividends, Common Stock, Cash Balance Balance (in shares) Revenue from Contract with Customer [Abstract] Revenue from Contracts with Customers Revenue from Contract with Customer [Text Block] Schedule of Other Assets Schedule of Cost Method Investments [Table Text Block] Estimated Fair Values of Company's Financial Instruments Fair Value, by Balance Sheet Grouping [Table Text Block] Fair Values of the Company's Assets Fair Value, Assets Measured on Recurring Basis [Table Text Block] Schedule of Marketable Securities Debt Securities, Available-for-sale [Table Text Block] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Products and Services Product and Service [Axis] Products and Services Product and Service [Domain] National and Regional Advertising Revenue [Member] [Member] National and Regional Advertising Revenue [Member] [Member] National and Regional Advertising Revenue [Member] [Member] National and regional advertising revenue National Advertising Revenue [Member] National advertising revenue. Local advertising revenue Local Advertising Revenue [Member] Local Advertising Revenue [Member] Founding member advertising revenue from beverage concessionaire agreements Founding Member Advertising Revenue From Beverage Concessionaire Agreements [Member] Founding member advertising revenue from beverage concessionaire agreements. Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Revenue Revenue from Contract with Customer, Excluding Assessed Tax Statement of Cash Flows [Abstract] Integration and other encumbered payments, related parties - operating activities Proceeds From Integration And Other Encumbered Theater Payments Made By Affiliates, Operating Activities Proceeds From Integration And Other Encumbered Theater Payments Made By Affiliates, Operating Activities Payment To Founding Members Under Tax Sharing Arrangement Payment To Founding Members Under Tax Sharing Arrangement Payment to founding members under tax sharing arrangement. Proceeds from related parties Proceeds from Collection of Long-term Loans to Related Parties Accrued distributions to founding members (including accrued distributions to related parties Accrued Integration And Other Encumbered Theater Payments Due To Founding Members, Financing Activities Accrued Integration And Other Encumbered Theater Payments Due To Founding Members, Financing Activities Accrued Distributions Made to LLC Accrued Distributions Made to LLC Accrued Distributions Made to LLC Accrued integration and other encumbered theater payments, related parties Accrued Integration And Other Encumbered Theater Payments Due From Founding Members, Financing Activities Accrued integration and other encumbered theater payments due from founding members. Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Subsequent Event Type Subsequent Event Type [Axis] Subsequent Event Type Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Legal Entity Legal Entity [Axis] Entity Entity [Domain] NCM, LLC. National Cine Media L L C [Member] National CineMedia, LLC. Credit Facility Credit Facility [Axis] Credit Facility Credit Facility [Domain] Revolving credit facility Revolving Credit Facility [Member] Covenant During Waiver Min [Member] Covenant During Waiver Min [Member] Covenant During Waiver [Member] Covenant Waiver Max [Member] Covenant Waiver Max [Member] Covenant Waiver Max [Member] Long-term Debt, Type Long-term Debt, Type [Axis] Long-term Debt, Type Long-term Debt, Type [Domain] Term loans Term Loan [Member] Term loan. Short-term Debt, Type Short-term Debt, Type [Axis] Short-term Debt, Type Short-term Debt, Type [Domain] Letter of Credit Letter of Credit [Member] Variable Rate Variable Rate [Axis] Variable Rate Variable Rate [Domain] LIBOR London Interbank Offered Rate (LIBOR) [Member] Base Rate Base Rate [Member] Range Statistical Measurement [Axis] Range Statistical Measurement [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Debt Instrument Debt Instrument [Axis] Debt Instrument, Name Debt Instrument, Name [Domain] Senior Secured Credit Facility Senior Secured Credit Facility [Member] Senior secured credit facility. Senior secured notes due 2022 Senior Notes Due Two Zero Two Two [Member] Senior notes due two zero two two. Senior unsecured notes due 2026 Senior Unsecured Notes Due Two Zero Two Six [Member] Senior unsecured notes due two zero two six. Senior secured notes due 2028 Senior Secured Notes Due Two Thousand Twenty Eight [Member] Senior Secured Notes Due Two Thousand Twenty Eight [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Borrowing amount of credit facility Line of Credit Facility, Maximum Borrowing Capacity Debt Instrument, carrying value Long-term Debt, Gross Line of Credit Facility, Asset Restrictions Credit Facility Availability Compliance Credit Facility Availability Compliance Debt Instrument, Restrictive Covenants Credit Agreement EBITDA Limit Credit Agreement EBITDA Limit Line of Credit, Covenant, Maximum Senior Secured Leverage Ratio Outstanding Credit Facility Waiver Limit Outstanding Credit Facility Waiver Limit Proceeds from Lines of Credit Proceeds from Lines of Credit Remaining borrowing capacity of credit facility Line of Credit Facility, Remaining Borrowing Capacity Outstanding letters of credit Long-term Line of Credit Unused line fee, percent Line of Credit Facility, Commitment Fee Percentage Basis spread on variable rate, percent Debt Instrument, Basis Spread on Variable Rate Cash and cash equivalents used in determining senior secured leverage ratio Debt Instrument, Senior Secured Leverage Ratio, Cash And Cash Equivalents Basis Debt Instrument, Senior Secured Leverage Ratio, Cash And Cash Equivalents Basis Weighted-average interest rate Debt, Weighted Average Interest Rate Amortization rate Debt Instrument, Amortization Rate Debt Instrument, Amortization Rate Repayment of term loan facility Repayments of Senior Debt Net total leverage ratio, covenant Debt Instrument, Covenant, Net Total Leverage Ratio Debt Instrument, Covenant, Net Total Leverage Ratio Net senior secured leverage ratio Debt Instrument, Dividend Restriction, Net Senior Secured Leverage Ratio Debt Instrument, Dividend Restriction, Net Senior Secured Leverage Ratio Senior secured leverage ratio Senior Secured Leverage Ratio Senior secured leverage ratio. Net total leverage ratio Debt Instrument, Net Total Leverage Ratio Debt Instrument, Net Total Leverage Ratio Debt instrument face amount Debt Instrument, Face Amount Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Debt instrument, frequency of periodic payment Debt Instrument, Frequency of Periodic Payment Debt instrument issued percentage of face value Debt Instrument Issued Percentage Of Face Value Debt instrument issued percentage of face value. Debt instrument, repurchase amount Debt Instrument, Repurchase Amount Write-off of debt issuance costs Write off of Deferred Debt Issuance Cost Theater access fees and revenue share, net of beverage revenues and other encumbered theater payments Theater Access Fees Net Of Beverage Revenues And Other Encumbered Theaters Payments Theater access fees net of beverage revenues and other encumbered theaters payments. Distributions payable to founding members Distributions Payable Distributions payable. Integration payments due from founding members Integration Payments Due From Related Parties Integration payments due from related parties. Costandotherreimbursement Cost and Other Reimbursement Cost and Other Reimbursement Total amounts due to founding members, net Related Party Transaction, Due from (to) Related Party Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document Information [Table] Document Information [Table] Document Information, Document [Axis] Document Information, Document [Axis] Document [Domain] Document [Domain] Document Information [Line Items] Document Information [Line Items] Document Transition Report Document Transition Report Document Quarterly Report Document Quarterly Report Title of 12(b) Security Title of 12(b) Security Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Description Entity Address, Address Line One Entity Address, City or Town Entity Address, City or Town Entity Address, State or Province Entity Address, State or Province Entity Address, Postal Zip Code Entity Address, Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Trading Symbol Trading Symbol Security Exchange Name Security Exchange Name Entity Interactive Data Current Entity Interactive Data Current Document Type Document Type Amendment Flag Amendment Flag Entity File Number Entity File Number Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Entity Filer Category Entity Filer Category Entity Emerging Growth Company Entity Emerging Growth Company Entity Small Business Entity Small Business Entity Current Reporting Status Entity Current Reporting Status Current Fiscal Year End Date Current Fiscal Year End Date Entity Shell Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Accounting Policies [Abstract] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Estimates Use of Estimates, Policy [Policy Text Block] Revenue Recognition Revenue [Policy Text Block] Concentration of Credit Risk and Significant Customers Concentration Of Credit Risk And Significant Customers Policy [Text Block] Disclosure of accounting policy for concentration of credit risk and significant customers. Share-Based Compensation Share-based Payment Arrangement [Policy Text Block] Consolidation Consolidation, Policy [Policy Text Block] Recently Adopted Accounting Pronouncements Recently Adopted Accounting Pronouncements Policy [Text Block] Recently adopted accounting pronouncements. Recently Issued Accounting Pronouncements Recently Issued Accounting Pronouncements Policy [Text Block] Recently issued accounting pronouncements. Contract Liabilities Contract Liabilities [Roll Forward] Contract Liabilities [Roll Forward] Balance at beginning of period Contract with Customer, Liability, Current Performance obligations satisfied Contract with Customer, Liability, Change in Timeframe, Performance Obligation Satisfied, Revenue Recognized New contract liabilities Contract with Customer, Liability, New Contract Liabilities Contract with Customer, Liability, New Contract Liabilities Balance at end of period Product and Service [Axis] Product and Service [Domain] Local And Regional Advertising Revenue [Member] Local And Regional Advertising Revenue [Member] Local and regional advertising revenue. Balance at beginning of period Accounts Receivable, Allowance for Credit Loss Provision for bad debt Accounts Receivable, Credit Loss Expense (Reversal) Write-offs, net Accounts Receivable, Allowance for Credit Loss, Writeoff Balance at end of period Noncancelable Long Term Contracts Noncancelable Long Term Contracts Noncancelable Long Term Contracts Make-good provision Accrued Reserves Accrued reserves. Noncancelable contract terms Noncancelable Contract Terms Noncancelable contract terms. Estimated revenue to be recognized on noncancelable leases Revenue, Remaining Performance Obligation, Amount Unbilled accounts receivable Unbilled Contracts Receivable Fair Value, Separate Account Investment [Table] Fair Value, Separate Account Investment [Table] Fair Value, Separate Account Investment [Line Items] Fair Value, Separate Account Investment [Line Items] Cost-method ownership percentage Cost Method Investment Ownership Percentage Cost method investment ownership percentage. Tax Period [Axis] Tax Period [Axis] Tax Period [Domain] Tax Period [Domain] Tax Year 2019 [Member] Tax Year 2019 [Member] Cinemark Holdings Inc [Member] Regal Entertainment Group [Member] Purchase of movie tickets and concession products (included in prepaid expenses) (1) Prepaid Expense, Current Receivables from related parties, current Financing Receivable, after Allowance for Credit Loss, Current Interest receivable on notes receivable (included in other current assets) Interest Receivable Common unit adjustments, net of amortization and integration payments (included in intangible assets) Finite-Lived Intangible Assets, Net Current payable to founding members under tax receivable agreement Payable To Founding Members Under Tax Sharing Agreement Current Payable to founding members under tax sharing agreement, current. Long-term payable to founding members under tax receivable agreement Payable To Founding Members Under Tax Sharing Agreement Noncurrent Payable to founding members under tax sharing agreement, noncurrent. Related Party Transactions Related Party Transactions Disclosure [Text Block] Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Event [Table] Debt Covenant Period [Axis] Debt Covenant Period [Axis] Debt Covenant Period [Axis] Debt Covenant Period [Domain] Debt Covenant Period [Domain] [Domain] for Debt Covenant Period [Axis] Revolving Credit Facility [Member] Cinemark and Regal [Member] Cinemark and Regal [Member] Cinemark and Regal [Member] Scenario [Axis] Scenario [Axis] Scenario [Domain] Scenario [Domain] Future period Forecast [Member] Subsequent Events [Line Items] Subsequent Event [Line Items] Asset restrictions Line of Credit Facility, Asset Restrictions Debt Instrument, Restrictive Covenants Debt Instrument, Restrictive Covenants Senior secured leverage ratio Line of Credit, Covenant, Maximum Senior Secured Leverage Ratio Line of Credit, Covenant, Maximum Senior Secured Leverage Ratio Cash dividends declared (in usd per share) Dividends Payable, Amount Per Share Dividends payable Dividends Payable Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Senior Notes Due Two Zero Two Six [Member] [Member] Senior Notes Due Two Zero Two Six [Member] [Member] Senior Notes Due Two Zero Two Six [Member] [Member] Senior secured notes due 2028 Senior Unsecured Notes Due Two Thousand Twenty Eight [Member] Senior Unsecured Notes Due Two Thousand Twenty Eight [Member] Measurement Basis Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Carrying Value Reported Value Measurement [Member] Fair Value Estimate of Fair Value Measurement [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Debt Instrument Debt Instrument, Fair Value Disclosure Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Investment Type Investment Type [Axis] Investments Investments [Domain] Impaired Investments Impaired Investments [Member] Impaired investments. Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Debt Securities, Available-for-sale, Realized Gain (Loss) Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Available-for-sale Securities, Gross Unrealized Loss Available-for-sale Securities, Gross Unrealized Loss Impairment of investment Cost-method Investments, Other than Temporary Impairment Fair value of cost method investment Cost Method Investments, Fair Value Disclosure Promissory notes receivable from founding members Notes Receivable, Related Parties Income Statement [Abstract] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt [Member] Debt [Member] Revision of Prior Period [Axis] Revision of Prior Period [Axis] Revision of Prior Period [Domain] Revision of Prior Period [Domain] REVENUE (including revenue from related parties of $0.0, $6.5, $4.3 and $11.8, respectively) OPERATING EXPENSES: Operating Expenses [Abstract] Advertising operating costs Cost of Goods and Services Sold Network costs Network Costs Direct costs arising from transactions associated with network operations. These costs are categorized as cost of goods sold. Theater access fees and revenue share to founding members (including fees to related parties of $0.0, $14.5, $12.5 and $27.4, respectively) Theater Access Fees Theater Access Fees Selling and marketing costs Selling and Marketing Expense Administrative and other costs General and Administrative Expense Asset Impairment Charges Asset Impairment Charges Depreciation expense Depreciation, Nonproduction Depreciation, Depletion and Amortization, Nonproduction Depreciation, Depletion and Amortization, Nonproduction Amortization of intangibles recorded for network theater screen leases Amortization of Leased Asset Total Costs and Expenses OPERATING (LOSS) INCOME Operating Income (Loss) NON-OPERATING EXPENSES: Nonoperating Income (Expense) [Abstract] Interest on borrowings Interest Expense, Debt Interest income Interest and Other Income Nonoperating Gains (Losses) Nonoperating Gains (Losses) Loss (gain) on modification and retirement of debt, net Gain (Loss) on Extinguishment of Debt Loss on re-measurement of the payable to founding members under the tax receivable agreement Gain (Loss) On Re Measurement Of Payable To Founding Members Under Tax Sharing Agreement Gain (loss) on re-measurement of payable to founding members under tax sharing agreement. Other non-operating expense (income) Other Nonoperating Income (Expense) Total Nonoperating Income (Expense) (LOSS) INCOME BEFORE INCOME TAXES Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax (benefit) expense Income Tax Expense (Benefit) CONSOLIDATED NET (LOSS) INCOME Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Less: Net (loss) income attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest NET (LOSS) INCOME ATTRIBUTABLE TO NCM, INC. Net Income (Loss) Attributable to Parent COMPREHENSIVE (LOSS) INCOME ATTRIBUTABLE TO NCM, INC. Comprehensive Income (Loss), Net of Tax, Attributable to Parent NET (LOSS) INCOME PER NCM, INC. COMMON SHARE: Basic (in usd per share) Earnings Per Share, Basic Diluted (in usd per share) Earnings Per Share, Diluted WEIGHTED AVERAGE SHARES OUTSTANDING: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Tax Year 2018 [Member] Tax Year 2018 [Member] Tax Year 2017 Tax Year 2017 [Member] Payments to affiliates for tax sharing agreement Fair Value, Hierarchy Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy Fair Value Hierarchy and NAV [Domain] Quoted Prices in Active Markets for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Measurement Frequency Measurement Frequency [Axis] Fair Value, Measurement Frequency Measurement Frequency [Domain] Fair Value, Measurements, Recurring Fair Value, Recurring [Member] Cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Short-term marketable securities Debt Securities, Available-for-sale, Current Long-term marketable securities Debt Securities, Available-for-sale, Noncurrent Total assets Assets, Fair Value Disclosure Changes In Equity Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table Text Block] Remaining performance obligation Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue from contract, payment due period from the customer Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Net (loss) income attributable to NCM, Inc. (in millions) Weighted average shares outstanding: Add: Dilutive effect of stock options and restricted stock (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Diluted (in shares) (Loss) earnings per NCM, Inc. share: Earnings Per Share, Diluted [Abstract] Subsequent Event Subsequent Events [Text Block] General Company Information [Table] General Company Information [Table] General company information. Measurement Input Type [Axis] Measurement Input Type [Axis] Measurement Input Type [Domain] Measurement Input Type [Domain] Revenue from Rights Concentration Risk [Member] Revenue from Rights Concentration Risk [Member] Ownership [Axis] Ownership [Axis] Ownership [Domain] Ownership [Domain] National Cine Media Inc [Member] American Multi Cinema Inc [Member] Retained Earnings Adjustments for New Accounting Pronouncements Accounting Standards Update [Axis] Type of Adoption Accounting Standards Update [Domain] Accounting Standards Update 2016-13 [Member] Accounting Standards Update 2016-13 [Member] Accounting Standards Update 2016-02 Accounting Standards Update 2016-02 [Member] General Company Information [Line Items] General Company Information [Line Items] General company information. Cumulative-effect adjustment for adoption of ASU 2014-09 Allowance for credit losses Deferred tax assets reduction Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) 2019 ESA Amendment Extension Period 2019 ESA Amendment Extension Period 2019 ESA Amendment Extension Period Remaining term (in years) Agreement With Founding Members, Remaining Term Agreement With Founding Members, Remaining Term Weighted average term, esa and affiliate (in years) Weighted Average Term, ESA and Affiliate Weighted Average Term, ESA and Affiliate Common membership units outstanding Units of Partnership Interest, Amount Percentage of common membership units outstanding Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest Membership units exchangeable into common stock ratio Membership Units Conversion Ratio Membership units conversion ratio. Number of reportable segment Number of Reportable Segments Number of shares of restricted stock and stock units vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Operating lease, right-of-use asset Operating Lease, Right-of-Use Asset Short-term lease liability Operating Lease, Liability, Current Long-term lease liability Operating Lease, Liability, Noncurrent Reversal of related deferred rent liability Deferred Rent Credit, Noncurrent customer ten percent of revenue customer ten percent of revenue customer ten percent of revenue Summary of Revenue from Contracts with Customers Disaggregation of Revenue [Table Text Block] Summary of Changes in Deferred Revenue Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Schedule of Allowance for Doubtful Accounts Financing Receivable, Current, Allowance for Credit Loss [Table Text Block] One Founding Members One Founding Members [Member] One founding members. Two Founding Members Two Founding Members [Member] Two founding members. Promissory Notes Promissory Notes [Member] Promissory notes. Investment, Name Investment, Name AC JV, LLC On-screen advertising time purchased, in seconds Length Of On Screen Advertising Time Which Founding Members Purchased Length of on screen advertising time which founding members purchased. On-screen advertising time to satisfy agreement obligations, in seconds Length Of On Screen Advertising Time To Satisfy Agreement Obligations The length of on-screen advertising time to satisfy agreement obligations. On-screen advertising time which founding members have right to purchase, in seconds Length Of On Screen Advertising Time Which Founding Members Have Right To Purchase Length of on-screen advertising time which founding members have a right to purchase Ownership percentage Equity Method Investment, Ownership Percentage Interest rate on notes receivable Notes Receivable Stated Interest Rate Notes receivable stated interest rate. Debt payment terms Debt Instrument, Payment Terms Adjustments to reconcile consolidated net (loss) income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Deferred income tax (benefit) expense Deferred Income Tax Expense (Benefit) Non-cash share-based compensation Share-based Payment Arrangement, Noncash Expense Amortization of debt issuance costs Amortization of Debt Issuance Costs Non-cash loss on re-measurement of the payable to founding members under the tax receivable agreement Non Cash Gain Loss On Re Measurement Of Payable To Founding Members Under Tax Sharing Agreement Non-cash gain (loss) on re-measurement of payable to founding members under tax sharing agreement. Other Other Noncash Income (Expense) Cost of Goods and Services Sold Proceedsfromdispositionofintangibleassetsbynetworkaffiliates Proceeds from disposition of intangible assets by network affiliates (AMC acquisition of Cinetopia) Other cash flows from operating activities Increase (Decrease) In Due To Related Parties Under Tax Receivable Agreement, Current Increase (Decrease) In Due To Related Parties Under Tax Receivable Agreement, Current Increase (Decrease) In Due To Related Parties Under Tax Receivable Agreement, Current Other Operating Activities, Cash Flow Statement Other Operating Activities, Cash Flow Statement CASH FLOWS FROM OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Consolidated net (loss) income Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Receivables, net Increase (Decrease) in Accounts Receivable Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Amounts due to/from founding members, net Increase (Decrease) in Due to Related Parties, Current Deferred revenue Increase (Decrease) in Contract with Customer, Liability Other, net Increase (Decrease) in Other Operating Assets and Liabilities, Net Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities CASH FLOWS FROM INVESTING ACTIVITIES: Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Purchases of marketable securities Payments to Acquire Available-for-sale Securities Proceeds from sale and maturities of marketable securities Proceeds from Sale and Maturity of Debt Securities, Available-for-sale Proceeds from notes receivable - founding members (including payments from related parties of $0.0 and $1.4, respectively) Net cash provided by investing activities Net Cash Provided by (Used in) Investing Activities CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] CHANGE IN CASH AND CASH EQUIVALENTS: Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash and cash equivalents at beginning of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and cash equivalents at end of period Payment of dividends Payments of Ordinary Dividends, Common Stock Proceeds from revolving credit facility Proceeds from Long-term Lines of Credit Repayments of revolving credit facility Repayments of Long-term Lines of Credit Repayment of term loan facility Repayments of Notes Payable Repayment of Senior Notes due 2026 Payment of debt issuance costs Payments of Debt Issuance Costs Distributions to founding members Payments of Distributions to Affiliates Repurchase of stock for restricted stock tax withholding Payment, Tax Withholding, Share-based Payment Arrangement Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Supplemental disclosure of non-cash financing and investing activity: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Purchase of an intangible asset with NCM LLC equity Noncash or Part Noncash Acquisition, Intangible Assets Acquired Accrued distributions to founding members (including accrued distributions to related parties of $0.0 and $15.4, respectively) Noncash Distributions To Founding Members Noncash distributions to founding members. Accrued integration and other encumbered theater payments due from founding members (including accrued payments due from related parties of $0.0 and $0.2, respectively) (Decrease) increase in dividend equivalent accrual not requiring cash in the period Increase Decrease In Dividends Not Requiring Cash Increase decrease in dividends not requiring cash. Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activities Cash paid for income taxes, net of refunds Income Taxes Paid, Net Fair Value Measurements Fair Value Disclosures [Text Block] Dividends per share (in usd per share) Common Stock, Dividends, Per Share, Declared Statement of Financial Position [Abstract] ASSETS Assets [Abstract] CURRENT ASSETS: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Receivables, net of allowance of $3.2 and $6.2, respectively Accounts Receivable, after Allowance for Credit Loss, Current Amounts due from founding members, net Due From Founding Members, Current Due From Founding Members, Current Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Total current assets Assets, Current NON-CURRENT ASSETS: Assets, Noncurrent [Abstract] Property and equipment, net of accumulated depreciation of $75.6 and $70.7, respectively Property, Plant and Equipment, Net Intangible assets, net of accumulated amortization of $211.0 and $198.9, respectively Deferred tax assets, net of valuation allowance of $72.4 and $81.6, respectively Deferred Income Tax Assets, Net Other investments Other Long-term Investments Debt issuance costs, net Debt Issuance Costs, Line of Credit Arrangements, Net Other assets Other Assets, Noncurrent Total non-current assets Assets, Noncurrent TOTAL ASSETS Assets LIABILITIES AND EQUITY/(DEFICIT) Liabilities and Equity [Abstract] CURRENT LIABILITIES: Liabilities, Current [Abstract] Amounts due to founding members, net Due to Related Parties, Current Payable to founding members under tax receivable agreement (including payables to related parties of $10.0 and $10.3, respectively) Accrued expenses Accrued Liabilities, Current Accrued payroll and related expenses Employee-related Liabilities, Current Accounts payable Accounts Payable, Current Deferred revenue Short-term debt Short-term Debt Other current liabilities Other Liabilities, Current Total current liabilities Liabilities, Current NON-CURRENT LIABILITIES: Liabilities, Noncurrent [Abstract] Long-term debt, net of debt issuance costs of $8.7 and $9.0, respectively Long-term Debt, Excluding Current Maturities Payable to founding members under tax receivable agreement (including payables to related parties of $134.7 and $133.5, respectively) Other liabilities Other Liabilities, Noncurrent Total non-current liabilities Liabilities, Noncurrent Total liabilities Liabilities COMMITMENTS AND CONTINGENCIES (NOTE 8) Commitments and Contingencies EQUITY/(DEFICIT): Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Preferred stock, $0.01 par value; 10,000,000 shares authorized, none issued and outstanding, respectively Preferred Stock, Value, Issued Common stock, $0.01 par value; 175,000,000 shares authorized, 78,000,338 and 77,568,986 issued and outstanding, respectively Common Stock, Value, Issued Additional paid in capital/(deficit) Additional Paid In Capital And Accumulated Deficit Common Stock Additional paid in capital and accumulated deficit common stock. Retained earnings (distributions in excess of earnings) Retained Earnings (Accumulated Deficit) Total NCM, Inc. stockholders’ equity/(deficit) Stockholders' Equity Attributable to Parent Noncontrolling interests Stockholders' Equity Attributable to Noncontrolling Interest Total equity/(deficit) TOTAL LIABILITIES AND EQUITY/(DEFICIT) Liabilities and Equity Net (loss) income attributable to NCM, Inc. NCM LLC equity issued for purchase of intangible asset Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Issuance Of Equity For Purchase Of Intangible Asset Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Issuance Of Equity For Purchase Of Intangible Asset Income tax and other impacts of subsidiary ownership changes Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Income Tax And Other Impacts Of Subsidiary Ownership Change Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Income Tax And Other Impacts Of Subsidiary Ownership Change Change from net (loss) income attributable to NCM, Inc. and transfers from noncontrolling interests Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Change Due to Net Income Attributable to Parent and Effects of Changes, Net Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Fees to related parties Related Party Costs Other Commitments [Table] Other Commitments [Table] Future patron payment Other Commitments [Line Items] Other Commitments [Line Items] Weighted average remaining lease term Operating Lease, Weighted Average Remaining Lease Term Operating lease payments Operating Lease, Payments Weighted average discount rate Operating Lease, Weighted Average Discount Rate, Percent Maximum potential payment Guarantor Obligations, Maximum Exposure, Undiscounted Range of terms, in years Revenue Guarantee Period Revenue guarantee period. Guarantee Obligations Amount Paid Guarantee Obligations Amount Paid Guarantee obligations amount paid. Additional amount accrued related to minimum guarantees Guarantor Obligations, Maximum Exposure, Undiscounted, Additional Amount Accrued Guarantor Obligations, Maximum Exposure, Undiscounted, Additional Amount Accrued Liabilities recorded for related party obligations Guarantor Obligations, Current Carrying Value Amount Increase In Payment Per Theater Patron Amount Increase In Payment Per Theater Patron Amount Increase In Payment Per Theater Patron Percentage of increase in payment per theatre patron Percentage Of Increase In Payment Per Theater Patron Percentage of increase in payment per theater patron. Platinum Spot Revenue Percentage Platinum Spot Revenue Percentage Platinum Sport Revenue Percentage Term of increase in payment percentage per theater patron Period Of Increase In Payment On Theater Patron Period of increase in payment on per theater patron. Percentage of increase in payment per digital screen and digital cinema equipment Percentage Of Increase In Payment Per Digital Screen And Digital Cinema Equipment Percentage of increase in payment per digital screen and digital cinema equipment. Aggregate percentage of theater access fee paid Percentage Of Theater Access Fee Paid Percentage of theater access fee paid. Schedule of Loss Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] AMC and Cinemark American Multi Cinema Inc And Cinemark Holdings Inc [Member] American Multi-Cinema, Inc. and Cinemark Holdings, Inc. Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets, Cost Incurred to Renew or Extend Finite-Lived Intangible Assets, Cost Incurred to Renew or Extend Percentage increase (decrease) in theater attendance for Common Unit adjustment to occur Percentage Increase Decrease In Theater Attendance For Common Unit Adjustment To Occur Percentage change in theater attendance for Common Unit adjustment to occur. Common membership units issued, net of returned Common Membership Units Issued Net Of Units Surrendered Common membership units issued net of units surrendered. Increase (decrease) in intangible assets, net Finite-Lived Intangible Assets, Period Increase (Decrease) Common membership units issued Common Membership Units Issued Common membership units issued. Common membership units returned Common Membership Units Returned Common membership units returned. Integration and other encumbered payments, related parties - financing activities Proceeds From Integration And Other Encumbered Theater Payments Made By Affiliates, Financing Activities Payments received from related parties for their acquired theatres that are subject to an existing on-screen advertising contract. Lease Cost Lease, Cost [Table Text Block] Borrowings Debt Disclosure [Text Block] Investment in AC JV, LLC Equity Method Investments Other investments Cost Method Investments Total other investments Schedule of Related Party Transactions Schedule of Related Party Transactions [Table Text Block] Schedule of Mandatory Distributions to Members Distributions Made to Limited Liability Company (LLC) Member, by Distribution [Table Text Block] Schedule of Amounts Due to Founding Members, Net Schedule of Incentive Distributions Made to Managing Members or General Partners by Distribution [Table Text Block] Operating Lease, Cost Operating Lease, Cost Short-term Lease, Cost Short-term Lease, Cost Variable Lease, Cost Variable Lease, Cost Lease, Cost Lease, Cost Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Class of Stock Class of Stock [Axis] Class of Stock Class of Stock [Domain] Common Units Common Units [Member] Common units. Antidilutive Securities Antidilutive Securities [Axis] Antidilutive Securities, Name Antidilutive Securities, Name [Domain] Stock Options And Non-Vested Restricted Stock Stock Options And Non Vested Restricted Stock [Member] Stock options and non-vested restricted stock. Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Shares excluded from the calculation of diluted weighted average shares Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Cinemark and Regal AffiliateCircuitSharePayment [Member] AffiliateCircuitSharePayment [Member] AffiliateCircuitSharePayment Payments of Distributions to Affiliates Percentage of cash savings related to taxes Percentage Of Cash Savings Related To Taxes Percentage of cash savings related to taxes. Cash payment due to founding members/managing member Common stock owned (in shares) Common Stock Owned, Shares Common Stock Owned, Shares Cash dividends on shares of NMC Inc Equity in earnings of non-consolidated entities Negative Distribution Made to Limited Liability Company Member, Cash Distributions Deferred Negative Distribution Made to Limited Liability Company Member, Cash Distributions Deferred Negative Distribution Made to Limited Liability Company Member, Cash Distributions Deferred Theater access fee Marketing and Advertising Expense Marketing and Advertising Expense Interest income from notes receivable (included in interest income) Interest Income, Related Party Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Short Term Marketable Securities [Member] Short Term Marketable Securities [Member] Short-term marketable securities. Long Term Marketable Securities [Member] Long Term Marketable Securities [Member] Long-term marketable securities. U.S. Government Agency Bonds US Government Agencies Debt Securities [Member] Commercial Paper [Member] Commercial Paper [Member] Short-Term U.S. Government Treasury Bonds US Government Treasury Debt Securities [Member] US Government Treasury Debt Securities [Member] Certificates of Deposit Certificates of Deposit [Member] Municipal Bonds [Member] Municipal Bonds [Member] Financial Commercial Paper Commercial Paper Financial [Member] Commercial paper financial. Industrial Commercial Paper Commercial Paper Industrial [Member] Commercial paper industrial. Municipal Notes [Member] Municipal Notes [Member] Financial Certificates Of Deposit Financial Certificates Of Deposit [Member] Financial certificates of deposit. Investment Secondary Categorization [Axis] Investment Secondary Categorization [Axis] Investments by Secondary Categorization [Domain] Investments by Secondary Categorization [Domain] Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale [Line Items] Amortized Cost Basis Debt Securities, Available-for-sale, Amortized Cost Aggregate Fair Value - Short term marketable securities Aggregate Fair Value - Long term marketable securities Aggregate Fair Value - Total marketable securities Debt Securities, Available-for-sale Maturities Available-For-Sale Debt Securities, Maturity Available-For-Sale Debt Securities, Maturity The Company Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Schedule of Outstanding Debt Schedule of Debt [Table Text Block] Income Tax Contingency [Table] Income Tax Contingency [Table] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] State and Federal State And Federal [Member] State And Federal [Member] Income Tax Contingency [Line Items] Income Tax Contingency [Line Items] Effective tax rate Effective Income Tax Rate Reconciliation, Percent Pretax Book Income Pretax Book Income Pretax Book Income Income tax benefit Allowance for doubtful accounts receivable Accounts Receivable, Allowance for Credit Loss, Current Accumulated depreciation, property and equipment Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accumulated amortization, intangible assets Finite-Lived Intangible Assets, Accumulated Amortization Deferred tax assets, valuation allowance Deferred Tax Assets, Valuation Allowance Debt issuance costs, long-term Debt Issuance Costs, Noncurrent, Net Preferred stock, par value (in usd per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Common stock, par value (in usd per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares issued (in shares) Common Stock, Shares, Issued Common stock, shares outstanding (in shares) Outstanding borrowings Debt issuance costs, long-term Long-term Debt Long-term Debt Carrying value of long-term debt Less: current portion of debt Long-term Debt, Current Maturities Interest Rate