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Investments in and Advances to Unconsolidated Affiliates - Tabular Disclosure of Differences between Share of Venture-Level Equity and Investment Balances (Parenthetical) (Detail) - CityCenter Holdings LLC As Investee [Member] - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Schedule Of Equity Method Investments [Line Items]
Other-than-temporary impairments of investment	$ (1,256,516)	$ (1,304,317)
Land [Member]
Schedule Of Equity Method Investments [Line Items]
Other-than-temporary impairments of investment	$ 352,000	$ 352,000

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- Definition

The item represents the difference between the amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and the amount of underlying equity in net assets the reporting Entity has in the investee attributable to the write-down of investment.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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