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Commitments and Contingencies - Additional Information (Detail) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2019 | Dec. 31, 2017 | Nov. 15, 2019 | May 31, 2019
Loss Contingencies [Line Items] |  |  |  |
Insurance coverage available to fund litigation liabilities | $ 751,000,000 |  |  |
Percentage of participation to increase the amount for settlement by certain categories of claimants | 100.00% |  |  |
Accrued insurance liability | $ 735,000,000 |  |  |
Insurance receivable | 735,000,000 |  |  |
Blackstone Real Estate Income Trust [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Guarantee obligation amount | $ 3,010,000,000.00 |  | $ 3,010,000,000.00 |
Guarantee term | Additionally, the Company provides a guarantee of the $3.01 billion principal amount of indebtedness (and any interest accrued and unpaid thereon) of Bellagio BREIT Venture, which matures in 2029. The terms of the guarantee provide that after the lenders have exhausted certain remedies to collect on the obligations under the indebtedness, the Company would then be responsible for any shortfall between the value of the collateral, which is the real estate assets of Bellagio owned by Bellagio BREIT Venture, and the debt obligation. This guarantee is accounted for under ASC 460 at fair value; such value is immaterial. |  |  |
MGP BREIT Venture [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Guarantee obligation amount | $ 3,000,000,000.0 |  |  |
Guarantee term | In connection with the MGP BREIT Venture Transaction, the Company provides a guarantee of the $3.0 billion principal amount of indebtedness (and any interest accrued and unpaid thereon) of MGP BREIT Venture, which has an initial term of twelve years, maturing in 2032, with an anticipated repayment date of March 2030. The terms of the guarantee provide that after the lenders have exhausted certain remedies to collect on the obligations under the indebtedness, the Company would then be responsible for any shortfall between the value of the collateral, which is the real estate assets of Mandalay Bay and MGM Grand Las Vegas, owned by MGP BREIT Venture, and the debt obligation. Refer to Note 1 for further discussion on this subsequent event. |  |  |
MGP Senior Credit Facility [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Credit facility outstanding | $ 0 |  |  |
Senior Credit Facility [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Credit facility outstanding | 11,000,000 |  |  |
Letters of credit [Member] | MGP Senior Credit Facility [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Credit facility amount | 75,000,000 |  |  |
Letters of credit [Member] | Senior Credit Facility [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Credit facility amount | $ 500,000,000 |  |  |
MGM Grand Paradise SA [Member] | Extension Agreement [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Guarantee obligation amount |  |  |  | $ 102,000
Guarantee term | In connection with the Extension Agreement, MGM Grand Paradise provided a bank guarantee in an amount of approximately $102 million (when giving effect to foreign currency exchange rate fluctuations) to the government of Macau in May 2019 to warrant the fulfillment of labor debts upon the expiration of the Extension Agreement in June 2022. |  |  |
City of Atlantic City, New Jersey [Member] | Borgata [Member] | Borgata Property Tax Reimbursement Agreement [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Reimbursement of property tax - Total amount |  | $ 72,000,000 |  |
Minimum [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Estimated amount for settlement to Claimants | $ 735,000,000 |  |  |
Maximum [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Estimated amount for settlement to Claimants | $ 800,000,000 |  |  |

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