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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2024
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Ownership interest (in percent) |  |  | 100.00% |  |
Fair value of investment | $ 421 |  | $ 421 |  | $ 388
Net gain (loss) on equity investments | 1 | $ (26) | 32 | $ (50) |
Loss reserve for accounts receivable | 140 |  | 140 |  | 135
Accrual for property and equipment within accounts payable | 91 |  | 91 |  | 109
Food and Beverage Revenue |  |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Lease revenue | 19 | 21 | 36 | 41 |
Entertainment Retail and Other Revenue |  |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Lease revenue | 29 | 29 | 57 | 58 |
MGM Grand Paradise SA | June 2022 Sub Concession Extension Contract |  |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Obligation amount | 87 |  | 87 |  | 87
Foreign Exchange Forward |  |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Derivative asset | 10 |  | 10 |  |
Derivative asset, current | 3 |  | 3 |  |
Derivative asset, noncurrent | 7 |  | 7 |  |
Derivative liability | 12 |  | 12 |  | 96
Derivative liability current |  |  |  |  | 57
Derivative liability noncurrent |  |  |  |  | $ 39
Net gain (loss) on derivative | $ 34 | $ (62) | $ 75 | $ (100) |
Bellagio REIT Venture |  |  |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Ownership interest by noncontrolling owner (in percent) | 5.00% |  | 5.00% |  |

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