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LONG-TERM DEBT - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 6,294,463 | $ 6,371,852
Less: Unamortized discounts and debt issuance costs, net | (24,700) | (28,042)
Long-term debt | $ 6,269,763 | 6,343,810
5.375% MGM China senior notes, due 2024 |  |
Debt Instrument [Line Items] |  |
Long-term debt, interest rate (in percent) | 5.375% |
Senior notes | $ 750,000 | 750,000
6.75% senior notes, due 2025 |  |
Debt Instrument [Line Items] |  |
Long-term debt, interest rate (in percent) | 6.75% |
Senior notes | $ 750,000 | 750,000
5.75% senior notes, due 2025 |  |
Debt Instrument [Line Items] |  |
Long-term debt, interest rate (in percent) | 5.75% |
Senior notes | $ 675,000 | 675,000
5.25% MGM China senior notes, due 2025 |  |
Debt Instrument [Line Items] |  |
Long-term debt, interest rate (in percent) | 5.25% |
Senior notes | $ 500,000 | 500,000
5.875% MGM China senior notes, due 2026 |  |
Debt Instrument [Line Items] |  |
Long-term debt, interest rate (in percent) | 5.875% |
Senior notes | $ 750,000 | 750,000
4.625% senior notes, due 2026 |  |
Debt Instrument [Line Items] |  |
Long-term debt, interest rate (in percent) | 4.625% |
Senior notes | $ 400,000 | 400,000
5.5% senior notes, due 2027 |  |
Debt Instrument [Line Items] |  |
Long-term debt, interest rate (in percent) | 5.50% |
Senior notes | $ 675,000 | 675,000
4.75% MGM China senior notes, due 2027 |  |
Debt Instrument [Line Items] |  |
Long-term debt, interest rate (in percent) | 4.75% |
Senior notes | $ 750,000 | 750,000
4.75% senior notes, due 2028 |  |
Debt Instrument [Line Items] |  |
Long-term debt, interest rate (in percent) | 4.75% |
Senior notes | $ 750,000 | 750,000
7% debentures, due 2036 |  |
Debt Instrument [Line Items] |  |
Long-term debt, interest rate (in percent) | 7.00% |
Senior notes | $ 552 | 552
MGM China first revolving credit facility |  |
Debt Instrument [Line Items] |  |
Long-term debt, gross | $ 293,911 | $ 371,300

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