Document and Entity Information [Abstract] Document And Entity Information Statement [Table] Statement [Line Items] Document Type Amendment Flag Document Period End Date Document Fiscal Year Focus Document Fiscal Period Focus Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Entity Filer Category Entity Common Stock, Shares Outstanding Condensed Consolidated Balance Sheet Assets [Abstract] Assets Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents, end of period Cash and cash equivalents, beginning of period Cash and Cash Equivalents, at Carrying Value, Total Cash and cash equivalents The total amount due to or from GE, with respect to cash pooling arrangements, as of the balance sheet date and payable within one year. Short Term Loans To G E Net Short-term loans to GE, net Receivables, Net, Current Receivables, Net, Current, Total Receivables, net The current portion of acquired television and cable networks programming rights recorded on the balance sheet. Includes multi-year programming arrangements, acquired movies, series and other programs. Carrying amount is stated at the lower of cost, less accumulated amortization, or net realizable value at the balance sheet date. Programming Rights Current Programming rights Other Assets, Current Other current assets Assets, Current Total current assets The carrying amount of owned films, television series and other television productions and noncurrent acquired television and cable network's programming rights recorded on the balance sheet. Owned films, television series and other television production costs include capitalizable production costs, including direct costs, production overhead, print costs, development costs and interest. Film and television rights include multi-year programming arrangements, acquired movies, series and other programs. The carrying amount is stated at the lower of cost, less accumulated amortization, or fair value at the balance sheet date. Film and Television Costs. Film and television costs Long-term Investments Investments Long-term Investments, Total Accounts Receivable, Net, Noncurrent Noncurrent receivables, net Accounts Receivable, Net, Noncurrent, Total Property, Plant and Equipment, Net Property, Plant and Equipment, Net, Ending Balance Property, Plant and Equipment, Net, Beginning Balance Property, Plant and Equipment, Net, Total Property and equipment, net Goodwill Goodwill, Ending Balance Goodwill, Beginning Balance Goodwill, Total Intangible Assets, Net (Excluding Goodwill) Intangible Assets, Net (Excluding Goodwill), Total Intangible assets, net Other Assets, Noncurrent Other Assets, Noncurrent, Total Other noncurrent assets Assets Total assets Liabilities and Equity [Abstract] Liabilities and Equity Accounts Payable and Accrued Liabilities, Current Accounts Payable and Accrued Liabilities, Current, Total Accounts payable and accrued liabilities Accrued participations and residuals current Accrued Participations and Residuals Current Accrued participations and residuals Program obligations Program Obligations Program obligations Deferred Revenue, Current Deferred Revenue, Current, Total Deferred revenue Liabilities, Current Total current liabilities Total current liabilities Long-term Debt and Capital Lease Obligations Long-term debt, less current portion Long-term Debt and Capital Lease Obligations, Total Due to Related Parties, Noncurrent Due to Related Parties, Noncurrent, Total Related party borrowings Accrued participations Residuals and Program Obligations Noncurrent Accrued Participations Residuals and Program Obligations Noncurrent Accrued participations, residuals and program obligations Deferred Tax Liabilities, Noncurrent Deferred income taxes Deferred Revenue, Noncurrent Deferred Revenue, Noncurrent, Total Deferred revenue Other Liabilities, Noncurrent Other noncurrent liabilities Other Liabilities, Noncurrent, Total Commitments and Contingencies, Liabilities Commitments and contingencies (Note 17) Commitments and contingencies (Note 17) Redeemable Noncontrolling Interest, Equity, Carrying Amount Redeemable Noncontrolling Interest, Equity, Carrying Amount, Total Redeemable noncontrolling interests Stockholders' Equity Attributable to Parent [Abstract] NBCUniversal member's and stockholders' equity: NBCUniversal member's and stockholders' equity: Common Stock, Value, Issued Common Stock, Value, Issued, Ending Balance Common Stock, Value, Issued, Beginning Balance Common Stock, Value, Issued, Total Common stock, $0.01 par value per share, authorized 2,000 and issued 1,000 Additional Paid in Capital Additional Paid in Capital, Ending Balance Additional Paid in Capital, Beginning Balance Additional paid-in capital Additional Paid in Capital, Total The amount of ownership interest of members in a limited liability company. Members Capital Member's capital Retained Earnings (Accumulated Deficit) Retained Earnings (Accumulated Deficit), Ending Balance Retained Earnings (Accumulated Deficit), Beginning Balance Retained Earnings (Accumulated Deficit), Total Retained earnings Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance Accumulated Other Comprehensive Income (Loss), Net of Tax, Total Accumulated other comprehensive income (loss) Stockholders' Equity Attributable to Parent Stockholders' Equity Attributable to Parent, Ending Balance Stockholders' Equity Attributable to Parent, Beginning Balance Total NBCUniversal member's and stockholders' equity Stockholders' Equity Attributable to Noncontrolling Interest Stockholders' Equity Attributable to Noncontrolling Interest, Ending Balance Stockholders' Equity Attributable to Noncontrolling Interest, Beginning Balance Stockholders' Equity Attributable to Noncontrolling Interest, Total Noncontrolling interests Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Balance Balance Total stockholders' equity Total member's equity Total member's equity Total member's equity Total member's equity Total member's equity Total member's equity at January 28, 2011 Liabilities and Equity Total liabilities and member's and stockholders' equity Common Stock, Par or Stated Value Per Share Common stock, par value Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Common Stock, Shares, Issued, Total Common stock, shares issued Condensed Consolidated Statement Of Income Revenues Revenues, Total Revenue Costs and Expenses [Abstract] Costs and Expenses: Operating costs and expenses including amortization of film and television costs but excluding all other intangible amortization and depreciation. Operating Cost and Expense Operating costs and expenses Operating costs and expenses Depreciation Depreciation Depreciation, Total Depreciation Amortization of Intangible Assets Amortization Amortization Amortization of Intangible Assets, Total Costs and Expenses Total costs and expenses Total costs and expenses Operating Income (Loss) Operating income Nonoperating Income (Expense) [Abstract] Other Income (Expense): Income (Loss) from Equity Method Investments Equity in income of investees, net Equity in income of investees, net Income (Loss) from Equity Method Investments, Total Interest Expense Interest expense Interest Expense, Total Interest expense Investment Income, Interest Interest income Other Nonoperating Income (Expense) Other Nonoperating Income (Expense), Total Other income (expense), net Nonoperating Income (Expense) Total other income (expense) Income loss from continuing operations before income taxes and non controlling interests Income Loss from Continuing Operations before Income Taxes and Non controlling Interests Income (loss) before income taxes and noncontrolling interests Income (loss) before income taxes and noncontrolling interests Income Tax Expense (Benefit) (Provision) benefit for income taxes Income Tax Expense (Benefit), Total (Provision) benefit for income taxes Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income (loss) before noncontrolling interests Net income (loss) before noncontrolling interests Net income (loss) before noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Net (income) loss attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest, Total Net (income) loss attributable to noncontrolling interests Net Income (Loss) Attributable to Parent Net income (loss) attributable to NBCUniversal Condensed Consolidated Statement Of Comprehensive Income Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Derivative financial instruments, net Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax Employee benefit obligations, net Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax, Total Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Total Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Total comprehensive income Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Total comprehensive income Comprehensive income attributable to NBCUniversal Condensed Consolidated Statement Of Cash Flows Net Cash Provided by (Used in) Operating Activities Net cash provided by (used in) operating activities Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] Investing activities Payments to Acquire Property, Plant, and Equipment Capital expenditures Capital expenditures Payments to Acquire Property, Plant, and Equipment, Total Proceeds from sale and purchases of investments and other assets. Proceeds From Sale Purchases Of Investments And Other Assets Proceeds from sale (purchases of) investments and other assets Net Cash Provided by (Used in) Investing Activities Net cash (used in) provided by investing activities Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Financing activities Proceeds from Other Debt Proceeds from third-party borrowings Repayments of Other Debt Repayments of third-party borrowings Repayments of third-party borrowings Decrease in short term loans to GE, net. Decrease In Short Term Loans To G E Net Decrease in short-term loans to GE, net Payments of Dividends Dividends paid Dividends paid Payments of Dividends, Total Payments of Capital Distribution Distributions to member Distributions to member Payments for Repurchase of Preferred Stock and Preference Stock Repurchase of preferred stock interest Repurchase of preferred stock interest Proceeds from Noncontrolling Interests Contributions from noncontrolling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Distributions to noncontrolling interests Distributions to noncontrolling interests Distributions to noncontrolling interests, net Net Cash Provided by (Used in) Financing Activities Net cash (used in) provided by financing activities Net cash provided by (used in) financing activities Cash and Cash Equivalents, Period Increase (Decrease) Increase (decrease) in cash and cash equivalents Increase (decrease) in cash and cash equivalents Condensed Consolidated Statement Of Changes In Equity Statement, Equity Components [Axis] Equity Component [Domain] Parent [Member] Common Stock [Member] Additional Paid-in Capital [Member] Retained Earnings [Member] Accumulated Other Comprehensive (Loss) Income [Member] Noncontrolling Interests [Member] Related Party Transactions, by Related Party [Axis] Related Party [Domain] Member's capital [Member] This element represents the adjustment to additional paid-in capital for noncash compensation related expenses. Noncash Compensation Noncash compensation Dividends, Cash Dividends declared Dividends declared Dividends, Cash, Total Distributions to noncontrolling interests, net of contributions. Distributions to Noncontrolling Interest Net Distributions to noncontrolling interests, net Distributions to noncontrolling interests, net Stockholders' Equity, Other Other Other Members capital other Members Capital Other Other Other Other Comprehensive Income (Loss), Net of Tax Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Total Other comprehensive income (loss) Profit or loss as represented on the statement of changes in equity. Equity Profit Loss Net income (loss) Contribution of Business Contribution of Business Contribution of Comcast Content Business Member's equity, remeasured Member's equity, remeasured Member's equity, remeasured Member's equity, remeasured at January 28, 2011 Business Description And Basis Of Presentation Business Description and Basis of Presentation [Text Block] Business Description And Basis Of Presentation Significant Accounting Policies Significant Accounting Policies [Text Block] Significant Accounting Policies Recent Accounting Pronouncements Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] Recent Accounting Pronouncements Acquisitions and Dispositions Business Combination Disclosure [Text Block] Acquisitions And Dispositions Related Party Transactions Related Party Transactions Disclosure [Text Block] Related Party Transactions Film And Television Costs Film and Television Costs [Text Block] Film and Television Costs [Text Block] Film And Television Costs Investments Investment [Text Block] Investments Intangible Assets Intangible Assets Disclosure [Text Block] Intangible Assets Long-Term Debt Long-term Debt [Text Block] Long-Term Debt Derivative Financial Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Derivative Financial Instruments Fair Value Measurements Fair Value Disclosures [Text Block] Fair Value Measurements Pension, Postretirement And Other Employee Benefit Plans Pension and Other Postretirement Benefits Disclosure [Text Block] Pension, Postretirement And Other Employee Benefit Plans Share-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Share-Based Compensation Income Taxes Income Tax Disclosure [Text Block] Income Taxes Supplemental Other Financial Information [Abstract] Supplemental Financial Information Additional Financial Information Disclosure [Text Block] Supplemental Financial Information Receivables monetization (abstract) Receivables Monetization Receivables monetization disclosure [text block] Receivables Monetization Disclosure [Text Block] Receivables Monetization Receivables Monetization Disclosure [Text Block] Commitments And Contingencies Commitments and Contingencies Disclosure [Text Block] Commitments And Contingencies Financial Data By Business Segment Segment Reporting Disclosure [Text Block] Segments Financial Data By Business Segment Subsequent Events Subsequent Events [Text Block] Subsequent Events Statement, Scenario [Axis] Scenario, Unspecified [Domain] Successor [Member] Predecessor [Member]