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Long-Term Debt - Schedule of Long-Term Debt (Detail) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Debt Instrument [Line Items] |  |
Long-term debt, Gross | $ 11,271,706 | $ 15,253,239
Less: Premiums, discounts, and unamortized debt issuance costs, net | (102,802) | (121,823)
Long-term debt | 11,168,904 | 15,131,416
Less: Current portion | 0 | (43,411)
Long-term debt, net | 11,168,904 | 15,088,005
Senior Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt, Gross | 0 | 750,000
Operating Partnership Senior Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt, Gross | 1,703,750 | 2,819,125
MGM China Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt, Gross | 667,404 | 2,433,562
Less: Current portion |  | (43,000)
8.625% Senior Notes, Due 2019 [Member] |  |
Debt Instrument [Line Items] |  |
Senior notes | 0 | 850,000
5.25% Senior Notes, Due 2020 [Member] |  |
Debt Instrument [Line Items] |  |
Senior notes | 0 | 500,000
6.75% Senior Notes, Due 2020 [Member] |  |
Debt Instrument [Line Items] |  |
Senior notes | 0 | 1,000,000
6.625% Senior Notes, Due 2021 [Member] |  |
Debt Instrument [Line Items] |  |
Senior notes | 0 | 1,250,000
7.75% Senior Notes, Due 2022 [Member] |  |
Debt Instrument [Line Items] |  |
Senior notes | 1,000,000 | 1,000,000
6% Senior Notes, Due 2023 [Member] |  |
Debt Instrument [Line Items] |  |
Senior notes | 1,250,000 | 1,250,000
5.625% Operating Partnership Senior Notes, Due 2024 [Member] |  |
Debt Instrument [Line Items] |  |
Senior notes | 1,050,000 | 1,050,000
5.375% MGM China Senior Notes, Due 2024 [Member] |  |
Debt Instrument [Line Items] |  |
Senior notes | 750,000 | 0
5.75% Senior Notes, Due 2025 [Member] |  |
Debt Instrument [Line Items] |  |
Senior notes | 1,000,000 | 1,000,000
5.875% MGM China Senior Notes, Due 2026 [Member] |  |
Debt Instrument [Line Items] |  |
Senior notes | 750,000 | 0
4.50% Operating Partnership Senior Notes, Due 2026 [Member] |  |
Debt Instrument [Line Items] |  |
Senior notes | 500,000 | 500,000
4.625% Senior Notes, Due 2026 [Member] |  |
Debt Instrument [Line Items] |  |
Senior notes | 500,000 | 500,000
5.75% Operating Partnership Senior Notes, Due 2027 [Member] |  |
Debt Instrument [Line Items] |  |
Senior notes | 750,000 | 0
5.5% Senior Notes, Due 2027 [Member] |  |
Debt Instrument [Line Items] |  |
Senior notes | 1,000,000 | 0
4.50% Operating Partnership Senior Notes, Due 2028 [Member] |  |
Debt Instrument [Line Items] |  |
Senior notes | 350,000 | 350,000
7% Debentures, Due 2036 [Member] |  |
Debt Instrument [Line Items] |  |
Senior notes | $ 552 | $ 552

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