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Goodwill and Other Intangible Assets - Schedule of Goodwill and Other Intangible Assets (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
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Goodwill And Intangible Assets [Line Items] |  |  |
Goodwill | $ 3,480,997 | $ 2,091,278 | $ 2,084,564
Total indefinite-lived intangible assets | 857,336 | 677,336 |
Total finite-lived intangible assets, net | 2,759,049 | 2,966,412 |
Total other intangible assets, net | 3,616,385 | 3,643,748 |
Trademarks And Other |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |
Total indefinite-lived intangible assets | 479,238 | 299,238 |
Other Finite-lived Intangible Assets |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets: | 65,207 | 60,649 |
Less: Accumulated amortization | (37,862) | (26,244) |
Total finite-lived intangible assets, net | 27,345 | 34,405 |
MGM Northfield Park and Empire City | Racing and Gaming Licenses |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |
Total indefinite-lived intangible assets | 280,000 | 280,000 |
Detroit Wholly Owned Subsidiary | Development Rights |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |
Total indefinite-lived intangible assets | 98,098 | 98,098 |
MGM Grand Paradise | Gaming Sub-concession |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets: | 4,516,532 | 4,541,990 |
Less: Accumulated amortization | (1,865,219) | (1,697,481) |
Total finite-lived intangible assets, net | 2,651,313 | 2,844,509 |
MGM National Harbor and MGM Springfield Gaming Licenses |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets: | 106,600 | 106,600 |
Less: Accumulated amortization | (26,209) | (19,102) |
Total finite-lived intangible assets, net | $ 80,391 | $ 87,498 |

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