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- Definition

Adequate Protection Payment, Cash Paid

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- Definition

Adequate Protection Payment, Expense

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- Definition

Cash Paid, Reorganization items

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- Definition

Holders of Principal Debt, Percentage

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- Definition

Proposed Debt Instrument Basis Spread On Variable Rate

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- Definition

Proposed Debt Instrument Term

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- Definition

Reorganizations

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- Definition

Restructuring Support Agreement, Common Stock Share Percentage Reorganized New Company

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- Definition

Restructuring Support Agreement, Equity Value of Reorganized Debtors

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- Definition

Restructuring Support Agreement, MSGE Support Group

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- Definition

Restructuring Support Agreement, Proposed Debt, Term

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- Definition

Restructuring Support Agreement, Proposed Long-Term Debt

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- Definition

Restructuring Support Agreement, Proposed Notes Reduction

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- Definition

Restructuring Support Agreement Proposed Settlement

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- Definition

Restructuring Support Agreement, Proposed Settlement of General Unsecured Claims

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- Definition

Restructuring Support Agreement ProposedSettlement, Payment Year One and Two

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- Definition

Restructuring Support Agreement Proposed Settlement, Upfront Payment

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- Definition

Restructuring Support Agreement Proposed Settlement, Year Three through Eight

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- Definition

Restructuring Support Agreement, Warrants Common Stock Share Percentage Reorganized New Company

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- Definition

The aggregate number of claims filed with the bankruptcy court.

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- Definition

Incremental percentage increase (decrease) in the stated rate on a debt instrument.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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- Definition

Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Reorganizations (Details) $ in Millions					2 Months Ended	3 Months Ended		7 Months Ended	12 Months Ended
Reorganizations (Details) $ in Millions	Mar. 26, 2021 USD ($)	Mar. 19, 2021 USD ($)	Mar. 10, 2021 USD ($)	Oct. 11, 2020 USD ($)	Dec. 25, 2020 USD ($) numberOfPlaintiffs	Mar. 26, 2021 USD ($)	Mar. 27, 2020 USD ($)	May 04, 2021 action	Dec. 25, 2020 USD ($)
Reorganizations [Line Items]
Restructuring Support Agreement, MSGE Support Group \| numberOfPlaintiffs					1,300
Restructuring Support Agreement, Common Stock Share Percentage Reorganized New Company				100.00%
Accrued interest	$ 27.8				$ 26.9	$ 27.8			$ 26.9
Cash Paid, Reorganization items						33.7
Restructuring Support Agreement, Proposed Settlement of General Unsecured Claims				$ 150.0
Restructuring Support Agreement, Proposed Notes Reduction				1,300.0
Subsequent Event [Member]
Reorganizations [Line Items]
Bankruptcy Claims, Number Claims Filed \| action								49,000
Opioid Claimant Trust [Member]
Reorganizations [Line Items]
Restructuring Support Agreement Proposed Settlement				1,600.0
Restructuring Support Agreement, Equity Value of Reorganized Debtors				1,551.0
Restructuring Support Agreement Proposed Settlement, Year Three through Eight				150.0
Restructuring Support Agreement ProposedSettlement, Payment Year One and Two				200.0
Restructuring Support Agreement Proposed Settlement, Upfront Payment				$ 450.0
Opioid Claimant Trust [Member] \| Other Ownership Interest [Member]
Reorganizations [Line Items]
Restructuring Support Agreement, Warrants Common Stock Share Percentage Reorganized New Company				19.99%
Medicaid Lawsuit [Member]
Reorganizations [Line Items]
Restructuring Support Agreement Proposed Settlement				$ 260.0
Medicaid Lawsuit [Member] \| Maximum
Reorganizations [Line Items]
Loss Contingency, Estimate of Possible Loss				640.0
Term Loans due Sept 2024 and Feb 2025
Reorganizations [Line Items]
Repayments of Long-term Debt		$ 114.0
Proposed Debt Instrument Term			5 years 9 months
Unsecured Debt
Reorganizations [Line Items]
Interest Paid, Excluding Capitalized Interest, Operating Activities						0.0	$ 17.7
Accrued interest	$ 17.7					$ 17.7
Restructuring Support Agreement [Member] \| Opioid Claimant Trust [Member]
Reorganizations [Line Items]
Restructuring Support Agreement Proposed Settlement, Year Three through Eight				150.0
Restructuring Support Agreement [Member] \| Term Loans due Sept 2024 and Feb 2025
Reorganizations [Line Items]
Ad Hoc Lender Aggregate Principal Amount			$ 1,300.0
Secured Debt
Reorganizations [Line Items]
Debt Instrument, Interest Rate, Increase (Decrease)						200.00%
Adequate Protection Payment, Expense							$ 14.5		11.7
Adequate Protection Payment, Cash Paid						$ 13.8			$ 7.8
Restructuring Support Agreement, Proposed Long-Term Debt				$ 375.0
Restructuring Support Agreement, Proposed Debt, Term				7 years
Secured Debt \| Term Loan due 2024
Reorganizations [Line Items]
Proposed Debt Instrument Basis Spread On Variable Rate	5.25%					5.25%
Secured Debt \| Term Loan due 2025
Reorganizations [Line Items]
Proposed Debt Instrument Basis Spread On Variable Rate			5.50%
Unsecured Debt \| 5.625% Senior Notes
Reorganizations [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.625%					5.625%
Unsecured Debt \| Restructuring Support Agreement [Member]
Reorganizations [Line Items]
Holders of Principal Debt, Percentage				84.00%
Senior Notes \| 5.75% Senior Notes
Reorganizations [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.75%					5.75%
Senior Notes \| 5.50% Senior Notes
Reorganizations [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.50%					5.50%
Senior Notes \| 10.00% Second Lien Senior Notes
Reorganizations [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				10.00%
Senior Notes \| 4.75% Senior Notes
Reorganizations [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.75%					4.75%
Debentures \| 9.50% Debenture
Reorganizations [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	9.50%					9.50%
Debentures \| 8.00% Debenture
Reorganizations [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	8.00%					8.00%
Term Loans due Sept 2024 and Feb 2025
Reorganizations [Line Items]
Debt Instrument, Interest Rate, Increase (Decrease)	250.00%