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v3.20.4

Long-Term Debt - Schedule of Long-Term Debt (Parenthetical) (Detail) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2020 | Jun. 30, 2020 | May 31, 2020 | Mar. 31, 2020 | May 31, 2019 | Apr. 30, 2019 | Jan. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019
7.75% senior notes, due 2022 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt, interest rate (as a percent) |  |  |  |  |  |  |  | 7.75% | 7.75%
Long-term debt, maturity year |  |  |  |  |  |  |  | 2022 | 2022
6% senior notes, due 2023 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt, interest rate (as a percent) |  |  |  |  |  |  |  | 6.00% | 6.00%
Long-term debt, maturity year |  |  |  |  |  |  |  | 2023 | 2023
5.625% Operating Partnership senior notes, due 2024 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt, interest rate (as a percent) |  |  |  |  |  |  |  | 5.625% | 5.625%
Long-term debt, maturity year |  |  |  |  |  |  |  | 2024 | 2024
5.375% MGM China senior notes, due 2024 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt, interest rate (as a percent) |  |  |  |  | 5.375% |  |  | 5.375% | 5.375%
Long-term debt, maturity year |  |  |  |  | 2024 |  |  | 2024 | 2024
6.75% senior notes, due 2025 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt, interest rate (as a percent) |  |  | 6.75% |  |  |  |  | 6.75% |
Long-term debt, maturity year |  |  | 2025 |  |  |  |  | 2025 |
5.75% senior notes, due 2025 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt, interest rate (as a percent) |  |  |  |  |  |  |  | 5.75% | 5.75%
Long-term debt, maturity year |  |  |  |  |  |  |  | 2025 | 2025
4.625% Operating Partnership senior notes, due 2025 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt, interest rate (as a percent) |  | 4.625% |  |  |  |  |  | 4.625% |
Long-term debt, maturity year |  | 2025 |  |  |  |  |  | 2025 |
5.25% MGM China senior notes, due 2025 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt, interest rate (as a percent) |  | 5.25% |  |  |  |  |  | 5.25% |
Long-term debt, maturity year |  | 2025 |  |  |  |  |  | 2025 |
5.875% MGM China senior notes, due 2026 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt, interest rate (as a percent) |  |  |  |  | 5.875% |  |  | 5.875% | 5.875%
Long-term debt, maturity year |  |  |  |  | 2026 |  |  | 2026 | 2026
4.5% Operating Partnership senior notes, due 2026 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt, interest rate (as a percent) |  |  |  |  |  |  |  | 4.50% | 4.50%
Long-term debt, maturity year |  |  |  |  |  |  |  | 2026 | 2026
4.625% senior notes, due 2026 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt, interest rate (as a percent) |  |  |  | 4.625% |  |  |  | 4.625% | 4.625%
Long-term debt, maturity year |  |  |  | 2026 |  |  |  | 2026 | 2026
5.75% Operating Partnership senior notes, due 2027 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt, interest rate (as a percent) |  |  |  |  |  |  | 5.75% | 5.75% | 5.75%
Long-term debt, maturity year |  |  |  |  |  |  | 2027 | 2027 | 2027
5.5% senior notes, due 2027 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt, interest rate (as a percent) |  |  |  |  |  | 5.50% |  | 5.50% | 5.50%
Long-term debt, maturity year |  |  |  |  |  | 2027 |  | 2027 | 2027
4.5% Operating Partnership senior notes, due 2028 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt, interest rate (as a percent) |  |  |  |  |  |  |  | 4.50% | 4.50%
Long-term debt, maturity year |  |  |  |  |  |  |  | 2028 | 2028
4.75% senior notes, due 2028 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt, interest rate (as a percent) | 4.75% |  |  |  |  |  |  | 4.75% |
Long-term debt, maturity year | 2028 |  |  |  |  |  |  | 2028 |
3.875% Operating Partnership senior notes, due 2029 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt, interest rate (as a percent) |  |  |  |  |  |  |  | 3.875% |
Long-term debt, maturity year |  |  |  |  |  |  |  | 2029 |
7% debentures, due 2036 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term debt, interest rate (as a percent) |  |  |  |  |  |  |  | 7.00% | 7.00%
Long-term debt, maturity year |  |  |  |  |  |  |  | 2036 | 2036

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