Summary of Lease Costs [Abstract] Summary of Lease Costs [Abstract] Finance Lease, Liability Finance Lease, Liability Operating lease cost Operating Lease, Cost Variable lease cost Variable Lease, Cost Total operating lease cost Lease, Cost Schedule of Concentration of Risk by Risk Factor [Abstract] Schedule of Concentration of Risk by Risk Factor [Abstract] Schedules of Concentration of Risk, by Risk Factor [Table Text Block] Schedules of Concentration of Risk, by Risk Factor [Table Text Block] Description of Business And Basis of Presentation [Abstract] Description of Business And Basis of Presentation [Abstract] Description of Business and Basis of Presentation Business Description and Basis of Presentation [Text Block] Fair Value Disclosures [Abstract] Fair Value, Assets and Liabilities Measured on Recurring Basis [Table] Fair Value, Recurring and Nonrecurring [Table] Schedule of Fair Value of Separate Accounts by Major Category of Investment [Axis] Asset Class [Axis] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, by Asset Class [Domain] Asset Class [Domain] Money market accounts [Member] Money Market Funds [Member] Time deposits [Member] Bank Time Deposits [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Level I [Member] Fair Value, Inputs, Level 1 [Member] Level II [Member] Fair Value, Inputs, Level 2 [Member] Level III [Member] Fair Value, Inputs, Level 3 [Member] 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] Total assets measured at fair value Assets, Fair Value Disclosure Long-term Debt, Fair Value Long-term Debt, Fair Value Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Text Block] Revenue from Contract with Customer [Text Block] Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Equipment [Member] Equipment [Member] Furniture and Fixtures [Member] Furniture and Fixtures [Member] Leasehold Improvements [Member] Leasehold Improvements [Member] Construction in Progress [Member] Construction in Progress [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Property and equipment, gross Property, Plant and Equipment, Gross Less accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property and equipment, net Property, Plant and Equipment, Net Share-based Payment Arrangement [Abstract] Share-Based Compensation - Restricted Stock Units (Narrative) [Table] Share-Based Compensation - Restricted Stock Units (Narrative) [Table] Share-Based Compensation - Restricted Stock Units (Narrative) [Table] Vesting [Axis] Vesting [Axis] Vesting [Domain] Vesting [Domain] Ratable Vesting [Member] Ratable Vesting [Member] An arrangement in where employees awards vest in a tranche every year (i.e one third vests every year) Cliff Vesting [Member] Cliff Vesting [Member] An arrangement in where employees awards vest in whole at the end of the vesting period due to employees not being able to exercise the shares until the end of the vesting period Award Type [Axis] Award Type [Axis] Award Type [Domain] Award Type [Domain] Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Types of Vesting [Axis] Types of Vesting [Axis] Types of Vesting [Axis] Types of Vesting [Domain] Types of Vesting [Domain] Types of Vesting [Domain] Non-Performance Vesting Non-Performance Vesting [Member] Non-Performance Vesting [Member] Performance Vesting Performance Vesting [Member] Performance Vesting [Member] Share-Based Compensation - Restricted Stock Units (Narrative) [Line Items] Share-Based Compensation - Restricted Stock Units (Narrative) [Line Items] [Line Items] for Share-Based Compensation - Restricted Stock Units (Narrative) [Table] Share-Based Compensation Arrangement by Share-Based Payment Awards, Settlement Description Share-Based Compensation Arrangement by Share-Based Payment Awards, Settlement Description Description of award terms as to how shares will be settled. Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Award Vesting Period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period RSUs vested in period, fair value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value RSUs shares witheld for tax withholding for share-based compensation Number Of Equity Instruments Surrendered By Employees Number of equity instruments surrendered by employees. Value Of Equity Instruments Surrendered By Employees ValueOfEquityInstrumentsSurrenderedByEmployees Value Of Equity Instruments Surrendered By Employees Cover [Abstract] Statement [Table] Statement [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Class A Common Stock [Member] Common Class A [Member] Class B Common Stock [Member] Common Class B [Member] Statement [Line Items] Statement [Line Items] Document Type Document Type Document Quarterly Report Document Quarterly Report Document Period End Date Document Period End Date Document Transition Report Document Transition Report Entity File Number Entity File Number Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Tax Identification Number Entity Address, Street Address Entity Address, Address Line One Entity Address, City Entity Address, City or Town Entity Address, State 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 Title of each class Title of 12(b) Security Trading Symbol(s) Trading Symbol Name of each exchange on which registered Security Exchange Name Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Shell Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Risks and Uncertanties [Abstract] Concentration of Risk [Abstract] Concentration Of Risk Concentration Risk Disclosure [Text Block] Related Party Transactions [Abstract] Related Party Transactions Related Party Transactions Disclosure [Text Block] Property and Equipment Property, Plant and Equipment Disclosure [Text Block] Schedule of Property, Plant and Equipment Property, Plant and Equipment [Table Text Block] Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Intangible Assets Subject to Amortization Schedule of Finite-Lived Intangible Assets [Table Text Block] Retirement Benefits [Abstract] Schedule of Net Periodic Benefit Cost Schedule of Net Benefit Costs [Table Text Block] Earnings Per Share [Abstract] Reconciliation of Weighted-Average Shares Used in Calculation of Basic and Diluted EPS Schedule of Weighted Average Number of Shares [Table Text Block] Lessee, Operating Lease, Liability, Payment, Due [Abstract] Lessee, Operating Lease, Liability, Maturity [Table Text Block] Lessee, Operating Lease, Liability, Maturity [Table Text Block] Goodwill And Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Income Tax Disclosure [Abstract] Effective Income Tax Rate Reconciliation, Amount [Abstract] Effective Income Tax Rate Reconciliation, Amount [Abstract] Income tax expense Income Tax Expense (Benefit) Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-based Payment Arrangement, Amount Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-based Payment Arrangement, Amount Deferred State and Local Income Tax Expense (Benefit) Deferred State and Local Income Tax Expense (Benefit) Effective Income Tax Rate Reconciliation, Book Provision Adjustment Effective Income Tax Rate Reconciliation, Book Provision Adjustment Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations. EffectiveIncomeTaxRateReconciliationBookingRate EffectiveIncomeTaxRateReconciliationBookingRate EffectiveIncomeTaxRateReconciliationBookingRate Income Taxes Paid Income Taxes Paid Maturity Operating Lease Liability [Abstract] Maturity Operating Lease Liability [Abstract] Remainder of fiscal year ending June 30, 2020 Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months Fiscal year ending June 30, 2021 Lessee, Operating Lease, Liability, Payments, Due Year Two Fiscal year ending June 30, 2022 Lessee, Operating Lease, Liability, Payments, Due Year Three Fiscal year ending June 30, 2023 Lessee, Operating Lease, Liability, Payments, Due Year Four Fiscal year ending June 30, 2024 Lessee, Operating Lease, Liability, Payments, Due Year Five Thereafter Lessee, Operating Lease, Liability, Payments, Due after Year Five Total undiscounted operating lease payments Lessee, Operating Lease, Liability, Payments, Due Less: imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Total operating lease liabilities Operating Lease, Liability Less: current portion of operating lease liabilities Operating Lease, Liability, Current Non-current operating lease liabilities Operating Lease, Liability, Noncurrent Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Expected term Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock Issued Common Stock [Member] Additional Paid-In Capital Additional Paid-in Capital [Member] Treasury Stock Treasury Stock [Member] Accumulated Deficit Retained Earnings [Member] Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Increase (Decrease) in Stockholders' Equity (Deficiency) [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Balance Stockholders' Equity Attributable to Parent Net income Net Income (Loss) Attributable to Parent Other comprehensive income Other Comprehensive Income (Loss), Net of Tax Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Share-based compensation expense APIC, Share-based Payment Arrangement, Increase for Cost Recognition Repurchases of Class A Common Stock Share Repurchase Total Costs Share repurchase obligation plus associated tender offer costs Tax withholding associated with shares issued for share-based compensation Share-based Payment Arrangement, Decrease for Tax Withholding Obligation Shares issued upon distribution of Restricted Stock Units Stock Issued During Period, Value, Restricted Stock Unit Award Aggregate value of stock related to Restricted Stock Units issued during the period. Cumulative effect of adoption of ASC 606 Cumulative Effect of New Accounting Principle in Period of Adoption Balance Weighted Average Discount Rate and Remaining Term [Abstract] Weighted Average Discount Rate and Remaining Term [Abstract] Weighted-average discount rate for operating leases Operating Lease, Weighted Average Discount Rate, Percent Weighted-average remaining operating lease term in years Operating Lease, Weighted Average Remaining Lease Term Share-based Compensation, Stock Options, Activity Share-based Payment Arrangement, Option, Activity [Table Text Block] Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Schedule of Share-based Compensation, Restricted Stock Units Award Activity Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] Regional Sports and Entertainment Networks Regional Sports and Entertainment Networks Regional Sports and Entertainment Networks (i.e MSG Network and MSG+) Percentage of ownership of the MSG business that MSGN distributed to stockholders Percentage of ownership of business distributed to stockholders in Spin Off Percentage of ownership of business distributed to stockholders in connection to the spin off ("Distribution"). Number of Reportable Segments Number of Reportable Segments Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Stock Options Share-based Payment Arrangement, Option [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Options, Outstanding, Balance Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Options, Grants in Period Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Options, Outstanding, Weighted Average Remaining Contractual Term Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Options, Outstanding, Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Options, Exercisable, Number Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Options, Exercisable, Weighted Average Remaining Contractual Term Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Options, Exercisable, Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Options, Outstanding, Weighted Average Exercise Price [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Options, Outstanding, Weighted Average Exercise Price, Beginning Balance Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Options, Grants in Period, Weighted Average Exercise Price Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Options, Outstanding, Weighted Average Exercise Price, Ending Balance Options, Exercisable, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Share Based Compensation Arrangement By Share Based Payment Award Options TARGET PAYOUT Share Based Compensation Arrangement By Share Based Payment Award Options TARGET PAYOUT Share Based Compensation Arrangement By Share Based Payment Award Options TARGET PAYOUT Share Based Compensation Arrangement By Share Based Payment Award Options ACTUAL PAYOUT Share Based Compensation Arrangement By Share Based Payment Award Options ACTUAL PAYOUT Share Based Compensation Arrangement By Share Based Payment Award Options ACTUAL PAYOUT Risks and Uncertainties [Abstract] Concentration Risk [Table] Concentration Risk [Table] Customer Concentration [Axis] Customer Concentration [Axis] Customer Concentration [Axis] Customer Concentration [Domain] Customer Concentration [Domain] [Domain] for Customer Concentration [Axis] Customer A [Member] Customer -A [Member] Customer A [Member] Customer B [Member] Customer B [Member] Customer B [Member] Customer C [Member] Customer C [Member] Customer C [Member] Customer D [Member] Customer D [Member] Customer D [Member] Customer 1 [Member] Customer 1 [Member] Customer 1 [Member] Customer 2 [Member] Customer 2 [Member] Customer 2 [Member] Customer 3 [Member] Customer 3 [Member] Customer 3 [Member] Customer 4 [Member] Customer 4 [Member] Customer 4 [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Accounts Receivable [Member] Accounts Receivable [Member] Sales Revenue, Services, Net [Member] Revenue Benchmark [Member] Concentration Risk [Line Items] Concentration Risk [Line Items] Concentration at period end, AR Concentration at period end, percentage Concentration at period end, percentage Concentration Risk, Percentage Revenues Concentration Risk, Percentage Customer Concentration In Prepaid Expenses Customer Concentration In Prepaid Expenses Customer Concentration In Prepaid Expenses Customer Concentration In Other Current Assets Customer Concentration In Other Current Assets Customer Concentration In Other Current Assets Customer Concentration In Other Assets Customer Concentration In Other Assets Customer Concentration In Other Assets Customer Concentration Customer Concentration Customer Concentration Concentration Risk, Number of Employees Labor Subject to Collective Bargaining Arrangements Concentration Risk, Number of Employees Labor Subject to Collective Bargaining Arrangements Concentration Risk, Number of Employees Labor Subject to Collective Bargaining Arrangements Concentration Risk, Percentage of Employees Labor Subject to Collective Bargaining Arrangements Concentration Risk, Percentage of Employees Labor Subject to Collective Bargaining Arrangements Concentration Risk, Percentage of Employees Labor Subject to Collective Bargaining Arrangements Concentration Risk, Percentage of Employees Labor Subject to Collective Bargaining Arrangements that already expired as of the current quarter end Concentration Risk, Percentage of Employees Labor Subject to Collective Bargaining Arrangements that already expired as of the current quarter end Concentration Risk, Percentage of Employees Labor Subject to Collective Bargaining Arrangements that already expired as of the current quarter end Concentration Risk, Percentage of Employees Labor Subject to Collective Bargaining Arrangements that expire within the next fiscal year Concentration Risk, Percentage of Employees Labor Subject to Collective Bargaining Arrangements that expire within the next fiscal year Concentration Risk, Percentage of Employees Labor Subject to Collective Bargaining Arrangements that expire within the next fiscal year Share-based Payment Arrangement, Noncash Expense [Abstract] Unvested award (in shares): Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Unvested award balance (beginning balance) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Unvested award balance (ending balance) Weighted-Average Fair Value Per Share at Date of Grant - RSUs (in dollars per share): Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Unvested award balance (beginning balance) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Unvested award balance (ending balance) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Granted In Period TARGET PAYOUT Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Granted In Period TARGET PAYOUT Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Granted In Period TARGET PAYOUT Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Granted In Period ACTUAL PAYOUT Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Granted In Period ACTUAL PAYOUT Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Granted In Period ACTUAL PAYOUT Statement of Financial Position [Abstract] Common stock, par value (dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares outstanding Common Stock, Shares, Outstanding Preferred stock, par value (dollars per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares outstanding Preferred Stock, Shares Outstanding Treasury stock, shares Treasury Stock, Shares Commitments and contingencies (see Note 9) Commitments and Contingencies Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Text Block] Commitments and Contingencies Disclosure [Text Block] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Affiliate Relationships [Member] Affiliate Relationships [Member] Affiliate Relationships [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Affiliate relationships Finite-Lived Intangible Assets, Gross Less: accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Net Finite-Lived Intangible Assets, Net Affiliate relationships estimated useful life Finite-Lived Intangible Asset, Useful Life Finite Lived Intangible Assets, Amortization Expense Amortization of Intangible Assets Accounting Policies [Abstract] Principles of Consolidation Consolidation, Policy [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Investment, Policy Investment, Policy [Policy Text Block] Recently Adopted Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Recently Issued Acounting Pronouncements Not Yet Adopted [Policy Text Block] Recently Issued Acounting Pronouncements Not Yet Adopted [Policy Text Block] Recently Issued Acounting Pronouncements Not Yet Adopted [Policy Text Block] Schedule of Fair Value, Assets Measured on Recurring Basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] ASSETS Assets [Abstract] Current Assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Related party receivables, net Accounts Receivable, Related Parties, Current Prepaid income taxes Prepaid Taxes Prepaid expenses Prepaid Expense, Current Other current assets Other Assets, Current Total current assets Assets, Current Property and equipment, net Amortizable intangible assets, net Goodwill Goodwill Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Other assets Other Assets, Noncurrent Total assets Assets LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIENCY) Liabilities and Equity [Abstract] Current Liabilities: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Related party payables Due to Related Parties, Current Current portion of long-term debt Long-term Debt, Current Maturities Current portion of operating lease liabilities Income taxes payable Accrued Income Taxes, Current Share repurchase obligation Share Repurchase Obligation Share Repurchase Obligation Accrued liabilities: Accrued Liabilities, Current [Abstract] Employee related costs Employee-related Liabilities, Current Other accrued liabilities Other Accrued Liabilities, Current Deferred revenue Deferred Revenue, Current Total current liabilities Liabilities, Current Long-term debt, net of current portion Long-term Debt, Excluding Current Maturities Long-term operating lease liabilities Defined benefit and other postretirement obligations Liability, Defined Benefit Plan, Noncurrent Other employee related costs Other Employee Related Liabilities Noncurrent Other Employee Related Liabilities Noncurrent Other liabilities Other Liabilities, Noncurrent Deferred tax liability Deferred Income Tax Liabilities, Net Total liabilities Liabilities Stockholders' Equity (Deficiency): Stockholders' Equity Attributable to Parent [Abstract] Common stock, value issued Common Stock, Value, Issued Preferred stock, par value $0.01, 45,000 shares authorized; none outstanding Preferred Stock, Value, Issued Additional paid-in capital Additional Paid in Capital, Common Stock Treasury stock, at cost, 20,751 and 2,972 shares as of March 31, 2020 and June 30, 2019, respectively Treasury Stock, Value Accumulated deficit Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total stockholders' deficiency Total liabilities and stockholders' deficiency Liabilities and Equity Share-Based Compensation - Stock Options (Narrative) [Table] Share-Based Compensation - Stock Options (Narrative) [Table] Share-Based Compensation - Stock Options (Narrative) [Table] Share-Based Compensation - Stock Options (Narrative) [Line Items] Share-Based Compensation - Stock Options (Narrative) [Line Items] [Line Items] for Share-Based Compensation - Stock Options (Narrative) [Table] Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Options, Grants in Period, Gross Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Equity [Abstract] Class of Treasury Stock [Table] Class of Treasury Stock [Table] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Tender Offer [Member] Tender Offer [Member] Tender Offer [Member] Stock repurchase program [Member] Stock repurchase program [Member] Stock repurchase program [Member] Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Stock Repurchase Program, Authorized Amount Stock Repurchase Program, Authorized Amount Stock Repurchase Program, Increase in Authorized Amount Stock Repurchase Program, Increase in Authorized Amount Stock Repurchase Program, Increase in Authorized Amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Treasury Stock, Shares, Acquired Treasury Stock, Shares, Acquired Modified Dutch Auction Tender Offer Price Per Share ModifiedDutchAuctionTenderOfferPricePerShare ModifiedDutchAuctionTenderOfferPricePerShare Share Repurchase Obligation excluding Cash Payments Share Repurchase Obligation excluding costs Share Repurchase Obligation excluding costs Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased Weighted-average number of shares for basic EPS Weighted Average Number of Shares Outstanding, Basic Dilutive effect of shares issuable under share-based compensation plans Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Weighted-average number of shares for diluted EPS Weighted Average Number of Shares Outstanding, Diluted Anti-dilutive shares Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Consolidated Statements of Comprehensive Income (Loss) [Abstract] Consolidated Statements of Comprehensive Income (Loss) [Abstract] Other Comprehensive Income (Loss), before income taxes:[Abstract] Other Comprehensive Income (Loss), before Tax [Abstract] Amounts reclassified from accumulated other comprehensive loss: Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax [Abstract] Amortization of net actuarial loss included in net periodic benefit cost Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax Amortization of prior service credit included in net periodic benefit cost Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax Settlement gain OtherComprehensiveIncomeLossReclassificationAdjustmentfromAOCIPensionandOtherPostretirementBenefitPlansDuetoSettlementsBeforeTax Represents the before tax amount of the income statement impact of the reclassification adjustment for gain (loss) recognized related to a settlement as a component of net periodic benefit cost Other comprehensive income before income taxes Other Comprehensive Income (Loss), before Tax Income tax expense related to items of other comprehensive income Other Comprehensive Income (Loss), Tax Other comprehensive income Comprehensive income Debt Disclosure [Abstract] Line of Credit Facility [Table] Line of Credit Facility [Table] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] 2015 Term Loan Facility [Member] 2015 Term Loan Facility [Member] Term Loan Facility under the Senior Secured Credit Facility entered on September 28, 2015 [Member] 2015 Revolving Credit Facility [Member] 2015 Revolving Credit Facility [Member] 2015 Revolving Credit Facility [Member] 2019 Term Loan Facility [Member] 2019 Term Loan Facility [Member] [Domain] 2019 Term Loan Facility [Member] [Domain] 2019 Revolving Credit Facility [Member] 2019 Revolving Credit Facility [Member] [Member] 2019 Revolving Credit Facility [Member] [Member] 2019 Credit Agreement [Member] 2019 Credit Agreement [Member] 2019 Credit Agreement [Member] Statistical Measurement [Axis] Statistical Measurement [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Incremental interest Selection Based on Leverage Ratio [Axis] Incremental interest Selection Based on Leverage Ratio [Axis] Incremental interest Selection Based on Leverage Ratio [Axis] Incremental interest Selection Based on Leverage Ratio [Domain] Incremental interest Selection Based on Leverage Ratio [Domain] [Domain] for Incremental interest Selection Based on Leverage Ratio [Axis] Eurodollar [Member] Eurodollar [Member] Base Rate [Member] Base Rate [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Senior secured revolving credit facility Line of Credit Facility, Maximum Borrowing Capacity Letters of Credit, maximum capacity Letters of Credit, maximum capacity Letters of Credit, maximum capacity Line Of Credit Facility Maturity Term In Years Line Of Credit Facility Maturity Term In Years Line Of Credit Facility Maturity Term In Years Debt Instrument, Basis Spread on Variable Rate Debt Instrument, Basis Spread on Variable Rate Debt Instrument, Interest Rate, Increase (Decrease) Debt Instrument, Interest Rate, Increase (Decrease) Additional interest Rate when Default Additional interest Rate when Default Additional interest Rate when Default Line of Credit Facility, Commitment Fee Percentage Line of Credit Facility, Commitment Fee Percentage Debt instrument, restrictive covenants Debt Instrument, Restrictive Covenants Letters of Credit Outstanding, Amount Letters of Credit Outstanding, Amount Remaining Borrowing Capacity Line of Credit Facility, Remaining Borrowing Capacity Debt Instrument, Maturity Date, Description Debt Instrument, Maturity Date, Description Interest Paid, Including Capitalized Interest, Operating and Investing Activities Interest Paid, Including Capitalized Interest, Operating and Investing Activities Term in years - Deferred Financing Costs Amortization of Deferred Financing Costs Amortization of Deferred Financing Costs Schedule of Maturities of Long-term Debt [Table Text Block] Schedule of Maturities of Long-term Debt [Table Text Block] Schedule of Debt [Table Text Block] Schedule of Debt [Table Text Block] Debt Financing Cost [Table Text Block] Debt Financing Cost [Table Text Block] [Table Text Block] for Debt Financing Cost [Table] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Affiliation Revenue Percentage Concentration Revenue Affiliation Revenue Percentage Concentration Revenue Affiliation Revenue Percentage Concentration Revenue PaymentTermsAffiliationFeeRevenue PaymentTermsAffiliationFeeRevenue Payment Term of Affiliation Fee Revenue PaymentTermsAdvertisingRevenue PaymentTermsAdvertisingRevenue Payment Terms of Advertising Revenue Revenue, Remaining Performance Obligation, Amount Revenue, Remaining Performance Obligation, Amount Remaining performance obligation recognized through fiscal 2023 Remaining performance obligation recognized through fiscal 2023 Remaining performance obligation recognized through fiscal 2023 Remaining performance obligation recognized thereafter Remaining performance obligation recognized thereafter Remaining performance obligation recognized thereafter Contract with Customer, Liability, Revenue Recognized Contract with Customer, Liability, Revenue Recognized Lessee, Operating Lease, Disclosure [Table Text Block] Lessee, Operating Lease, Disclosure [Table Text Block] Lessee, Operating Leases [Abstract] Lessee, Operating Leases [Abstract] Lessee, Operating Leases [Text Block] Lessee, Operating Leases [Text Block] Share-based Compensation Share-based Payment Arrangement [Text Block] Savings Plan [Abstract] Savings Plan [Abstract] Defined Contribution Plan, Cost Defined Contribution Plan, Cost Lease, Cost [Table Text Block] Lease, Cost [Table Text Block] Statement of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Amortization of deferred financing costs Amortization of Debt Issuance Costs Debt refinancing expense Payment for Debt Extinguishment or Debt Prepayment Cost Share-based compensation expense Share-based Payment Arrangement, Noncash Expense Provision for doubtful accounts Accounts Receivable, Credit Loss Expense (Reversal) Change in assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable, net Increase (Decrease) in Accounts Receivable Related party receivables, net Increase (Decrease) in Due from Affiliates, Current Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Accounts payable Increase (Decrease) in Accounts Payable Related party payables, including payable to MSG Increase (Decrease) in Accounts Payable, Related Parties Prepaid/payable for income taxes Increase (Decrease) in Income Taxes Payable, excluding the sale of Fuse The increase (decrease) during the period in the amount due for taxes based on the reporting entity's earnings or attributable to the entity's income earning process (business presence) within a given jurisdiction, excluding the increase (decrease) related to the sale of Fuse. Accrued and other liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Deferred revenue Increase (Decrease) in Deferred Revenue Deferred income taxes Increase (Decrease) in Deferred Income Taxes, excluding the sale of Fuse The increase (decrease) during the reporting period in the account that represents the temporary difference that results from Income or Loss that is recognized for accounting purposes but not for tax purposes and vice versa, excluding the increase (decrease) related to the sale of Fuse. Net Cash Provided by (Used in) Operating Activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Capital expenditures Payments to Acquire Property, Plant, and Equipment Investment in nonconsolidated entity Payments to Acquire Investments Net Cash Provided by (Used in) Investing Activities Net Cash Provided by (Used in) Investing Activities Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Principal repayments on term loan facilities (see Note 7) Repayments of Secured Debt Proceeds from senior secured credit facilities (see Note 7) Proceeds from Lines of Credit Payments of Financing Costs Payments of Financing Costs Share repurchase costs Payments for Repurchase of Equity Taxes paid in lieu of shares issued for share-based compensation Payment, Tax Withholding, Share-based Payment Arrangement Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Net decrease in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash, Beginning of Period Cash Cash, Ending of Period Consolidated Statement of Operations Parenthetical [Abstract] Consolidated Statement of Operations Parenthetical [Abstract] Related Party Transaction Direct Operating Expenses From Transactions With Related Party Related Party Transaction Direct Operating Expenses From Transactions With Related Party Related Party Transaction Direct Operating Expenses From Transactions With Related Party Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party Contract with Customer, Asset and Liability [Table Text Block] Contract with Customer, Asset and Liability [Table Text Block] Computation of Earnings per Common Share Earnings Per Share [Text Block] Depreciation and amortization expense Cost, Depreciation, Amortization and Depletion Significant Accounting Policies [Text Block] Significant Accounting Policies [Text Block] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] Non Employee Director Plan [Member] Non Employee Director Plan [Member] Non-Employee Director Plan [Member] Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Share-based Payment Arrangement, Noncash Expense Related Party Ownership Percentage [Table] Related Party Ownership Percentage [Table] Related Party Ownership Percentage [Table] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Common Class B [Member] Related Party Ownership Percentage [Line Items] Related Party Ownership Percentage [Line Items] Related Party Ownership Percentage [Line Items] Percentage of Common Stock Owned by Related Party Percentage Of Common Stock Owned by Related Party Inclusive of Options Exerciseable Within 60 Days Percentage of Common Stock Owned by Related Party Aggregate Voting Power Held By Related Party Aggregate Voting Power Held By Related Party Aggregate voting power held by related party Summary of Supplemental Cash Paid for Amounts in the Measurement of Lease Liabilities [Abstract] Summary of Supplemental Cash Paid for Amounts in the Measurement of Lease Liabilities [Abstract] Summary of Supplemental Cash Paid for Amounts in the Measurement of Lease Liabilities [Table Text Block] [Text Block] Summary of Supplemental Cash Paid for Amounts in the Measurement of Lease Liabilities [Table Text Block] [Text Block] Summary of Supplemental Cash Paid for Amounts in the Measurement of Lease Liabilities Leases [Abstract] Cash paid for amounts included in the measurement of operating lease liabilities Operating Lease, Payments Cash paid for variable lease payments not included in measurement of operating lease liabilities Variable Lease, Payment Total Operating Lease, Payments, Use Debt Financing Cost Disclosure [Abstract] Debt Financing Cost Disclosure [Abstract] Debt Financing Cost [Table] Debt Financing Cost [Table] Debt Financing Cost [Table] 2019 Revolving Credit Facility [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Other Current Assets [Member] Other Current Assets [Member] Other Noncurrent Assets [Member] Other Noncurrent Assets [Member] Debt Financing Cost [Line Items] Debt Financing Cost [Line Items] [Line Items] for Debt Financing Cost [Table] Debt Issuance Costs, Gross Debt Issuance Costs, Gross Accounts receivable (including advertising receivable included in related party receivables, net) Accounts Receivable, after Allowance for Credit Loss Contract asset, short-term (included in other current assets) Contract with Customer, Asset, Net, Current Contract asset, long-term (included in other assets) Contract with Customer, Asset, Net, Noncurrent Deferred revenue, short-term Deferred revenue, long-term (included in other liabilities) Contract with Customer, Liability, Noncurrent Income Statement [Abstract] Revenues Revenues Direct operating expenses (including related party expenses of $39,880 and $38,283 for the three months ended March 31, 2020 and 2019, respectively, and $118,767 and $114,586 for the nine months ended March 31, 2020 and 2019, respectively) Direct Operating Costs Selling, general and administrative expenses (including related party expenses of $8,369 and $9,739 for the three months ended March 31, 2020 and 2019, respectively, and $20,386 and $21,464 for the nine months ended March 31, 2020 and 2019, respectively) Selling, General and Administrative Expense Operating income Operating Income (Loss) Other income (expense): Nonoperating Income (Expense) [Abstract] Interest income Investment Income, Interest Interest expense Interest Expense Debt refinancing expense Gain (Loss) on Extinguishment of Debt Other components of net periodic benefit cost Other components of net periodic benefit cost Amount of other components of net periodic benefit cost (excluding service cost). ASU 2017-07 Nonoperating expense, Total Nonoperating Income (Expense) Income from operations before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax expense Net income Earnings (loss) Per Share Basic Earnings Per Share, Basic [Abstract] Basic Earnings Per Share, Basic Diluted Earnings Per Share, Diluted [Abstract] Diluted Earnings Per Share, Diluted Weighted-average number of common shares outstanding: Weighted-Average Number of Common Shares Outstanding [Abstract] Weighted-Average Number of Common Shares Outstanding [Abstract] Basic (in shares) Diluted (in shares) Impairment of Goodwill Goodwill, Impairment Loss Fair Value Measurements Fair Value Disclosures [Text Block] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Continuing Operations [Member] Continuing Operations [Member] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Rights fees Related Party Transaction Rights Fees Related Party Transaction Rights Fees Origination, master control and technical services Related Party Transaction Origination Master Control And Post Production Services Expense Related Party Transaction Origination Master Control And Post Production Services Expense Commission Related Party Transaction Commissions Related Party Transaction Commissions General and administrative expenses Related Party Transaction General And Administrative Expenses From Transactions With Related Party Related Party Transaction General And Administrative Expenses From Transactions With Related Party Other operating expenses Related Party Transaction Other Expenses From Transactions With Related Party Related Party Transaction Other Expenses From Transactions With Related Party Treasury Stock [Text Block] Treasury Stock [Text Block] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Retirement Plan Type [Axis] Retirement Plan Type [Axis] Retirement Plan Type [Domain] Retirement Plan Type [Domain] Pension Plans [Member] Pension Plan [Member] Postretirement Plan [Member] Other Postretirement Benefits Plan [Member] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] Service cost Defined Benefit Plan, Service Cost Interest cost Defined Benefit Plan, Interest Cost Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Recognized actuarial loss (a) Defined Benefit Plan, Amortization of Gain (Loss) Amortization of unrecognized prior service credit (a) Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Settlement gain (a) Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement Net periodic benefit cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Long Term Debt Maturities, Repayment of Principal of Term Loan [Abstract] Long Term Debt Maturities, Repayment of Principal of Term Loan [Abstract] Remainder of fiscal year ending June 30, 2020 Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months Fiscal year ending June 30, 2021 Long-term Debt, Maturities, Repayments of Principal in Year Two Fiscal year ending June 30, 2022 Long-term Debt, Maturities, Repayments of Principal in Year Three Fiscal year ending June 30, 2023 Long-term Debt, Maturities, Repayments of Principal in Year Four Fiscal year ending June 30, 2024 Long-term Debt, Maturities, Repayments of Principal in Year Five Thereafter Long-term Debt, Maturities, Repayments of Principal after Year Five Repayments of Long-term Debt Repayments of Long-term Debt Investment in Non Consolidated entity [Abstract] Investment in Non Consolidated entity [Abstract] Investment in nonconsolidated entity Investment Owned, at Cost Recently Adopted Accounting Pronouncements [Abstract] Recently Adopted Accounting Pronouncements [Abstract] Operating Lease, Liability Operating Lease, Right-of-Use Asset Schedule of Maturities of Long-Term Debt [Abstract] Schedule of Maturities of Long-Term Debt [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] 2019 Term Loan Facility [Member] Current portion of long-term debt [Member] current portion of long-term debt [Member] current portion of long-term debt [Member] Long-term debt, net of current portion [Member] Long-term debt, net of current portion [Member] Long-term debt, net of current portion [Member] Long-term Debt, Gross Long-term Debt, Gross Debt Issuance Costs, Gross Debt outstanding, net of deferred financing costs Debt outstanding, net of deferred financing costs per ASU 2015-03 Debt outstanding, net of deferred financing costs per ASU 2015-03 and ASU 2015-15 Pension Plans And Other Postretirement Benefit Plan Pension and Other Postretirement Benefits Disclosure [Text Block] Debt Debt and Capital Leases Disclosures [Text Block] Income Taxes Income Tax Disclosure [Text Block]