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ACQUISITIONS AND DIVESTITURES - Additional Information (Details) $ / shares in Units, $ in Thousands |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 4 Months Ended | 9 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 31, 2023 USD ($) | Feb. 15, 2023 USD ($) | Dec. 19, 2022 USD ($) | May 17, 2022 USD ($) | Apr. 29, 2022 USD ($) shares | Feb. 28, 2023 USD ($) | Dec. 31, 2022 USD ($) | Sep. 30, 2022 USD ($) | Sep. 22, 2022 USD ($) | Sep. 30, 2023 USD ($) | Jun. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2022 USD ($) | Sep. 06, 2022 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Sep. 07, 2022 | May 02, 2022 kr / shares | Apr. 28, 2022 commonStockClass | Dec. 31, 2021 USD ($) | Jul. 30, 2021 $ / shares
Schedule of Business Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | $ 5,029,312 |  |  | $ 5,142,838 |  |  |  |  | $ 5,142,838 |  |  |  |  | $ 3,480,997 |
Gain on REIT transactions, net |  |  |  |  |  |  |  |  |  | 0 |  | $ 0 |  |  | 0 | $ 2,277,747 |  |  |  |  |
Noncontrolling interests |  |  |  |  |  |  | 378,594 |  |  | $ 463,063 |  |  |  |  | 463,063 |  |  |  |  |  |
Proceeds from sale of operating resorts |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 460,392 | $ 0 |  |  |  |  |
Discontinued Operations, Disposed of by Sale | MGP |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Business Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on REIT transactions, net |  |  |  |  | $ 2,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration received from sale of discontinued operations |  |  |  |  | 4,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interests |  |  |  |  | 3,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Carrying value of assets and liabilities and comprehensive income |  |  |  |  | 5,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal Group, Held-for-sale, Not Discontinued Operations | The Mirage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Business Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease in annual rent payments |  |  |  |  |  |  | $ 90,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal Group, Held-for-sale, Not Discontinued Operations | Gold Strike Tunica |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Business Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease in annual rent payments |  |  |  |  |  | $ 40,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
VICI Properties, Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Business Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash tender price |  |  |  |  | $ 4,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock issued during period, issued for services (in shares) | shares |  |  |  |  | 1.366 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating partnership units received (in shares) | shares |  |  |  |  | 1.366 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating partnership units received (in shares) |  |  |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest |  |  |  |  | $ 375,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Affiliated Entity | Discontinued Operations, Disposed of by Sale | The Mirage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Business Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration received from sale of discontinued operations |  |  | $ 1,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of operating resorts |  |  | 1,075,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease in annual rent payments |  |  | $ 90,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
CNE Gaming Holdings, LLC | Disposal Group, Held-for-sale, Not Discontinued Operations | Gold Strike Tunica |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Business Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on REIT transactions, net |  | $ 399,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration received from sale of discontinued operations |  | 474,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Carrying value of assets and liabilities and comprehensive income |  | 75,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of operating resorts |  | 450,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease in annual rent payments |  | $ 40,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
MGM Grand Las Vegas and Mandalay Bay Transaction |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Business Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of classes of common stock | commonStockClass |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |
Ownership interest (in percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.10% |  |
Push Gaming |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Business Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest acquired (in percent) | 86.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash tender price | $ 145,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill | 126,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortizable intangible assets | $ 40,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LeoVegas |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Business Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest acquired (in percent) |  |  |  |  |  |  |  |  | 2.00% |  |  |  |  |  |  |  | 65.00% |  |  |  |
Cash tender price |  |  |  |  |  |  |  |  | $ 370,000 |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  |  |  | $ 288,367 |  |  |  |  |  |  |  |  |  |  |  |
Shares tendered (in percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 |  |  |
Tender offer price (in krona per share) | kr / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | kr 61 |  |  |
Operating partnership equity interest (in percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 31.00% |  |  |  |
Equity interests issued and issuable |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 172,000 |  |  |  |  |  |  |
Remaining outstanding shares, fair value |  |  |  |  |  |  |  |  |  |  | $ 11,000 |  |  |  |  |  |  |  |  |  |
Ownership interest after transaction |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |
Total assets acquired and liabilities assumed |  |  |  |  |  |  |  |  | $ 556,000 |  |  |  |  |  |  |  |  |  |  |  |
Useful life (in years) |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |
Acquiree net revenue |  |  |  |  |  |  |  | $ 31,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Acquiree operating income (loss) |  |  |  |  |  |  |  | 3,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Acquiree net income (loss) |  |  |  |  |  |  |  | $ 4,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Cosmopolitan of Las Vegas |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Business Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest acquired (in percent) |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash tender price |  |  |  | $ 1,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  | 1,289,468 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total assets acquired and liabilities assumed |  |  |  | 1,690,486 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquiree net revenue |  |  |  |  |  |  |  |  |  |  |  |  | $ 465,000 |  |  |  |  |  |  |  |
Acquiree operating income (loss) |  |  |  |  |  |  |  |  |  |  |  |  | 57,000 |  |  |  |  |  |  |  |
Acquiree net income (loss) |  |  |  |  |  |  |  |  |  |  |  |  | $ 57,000 |  |  |  |  |  |  |  |
Cash consideration for acquisition |  |  |  | $ 1,625,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cosmopolitan of Las Vegas | Customer lists |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Business Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Useful life (in years) |  |  |  | 7 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
MGP | VICI Properties, Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Business Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed exchange ratio (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 43

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