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Goodwill and Other Intangible Assets - Schedule of Goodwill and Other Intangible Assets (Detail) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Goodwill And Intangible Assets [Line Items] |  |  |
Goodwill | $ 2,084,564 | $ 1,821,392 | $ 1,806,531
Total indefinite-lived intangible assets | 678,310 | 638,120 |
Finite-lived intangible assets, net | 3,148,194 | 3,306,343 |
Total other intangible assets, net | 3,826,504 | 3,944,463 |
Trademarks, License Rights and Other [Member] |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |
Total indefinite-lived intangible assets | 352,212 | 312,022 |
Customer Lists [Member] |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross | 202,347 | 174,679 |
Less: Accumulated amortization | (161,892) | (151,465) |
Finite-lived intangible assets, net | 40,455 | 23,214 |
Finite-Lived Gaming Licenses and Other Intangible Assets [Member] |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross | 141,327 | 136,127 |
Less: Accumulated amortization | (38,374) | (31,053) |
Finite-lived intangible assets, net | 102,953 | 105,074 |
Northfield Park associates LLC [Member] | Racing and Gaming Licenses [Member] |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |
Total indefinite-lived intangible assets | 228,000 | 228,000 |
Detroit Wholly Owned Subsidiary | Development Rights [Member] |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |
Total indefinite-lived intangible assets | 98,098 | 98,098 |
MGM Grand Paradise [Member] | Gaming Sub-concession [Member] |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross | 4,519,558 | 4,468,766 |
Less: Accumulated amortization | (1,514,772) | (1,342,561) |
Finite-lived intangible assets, net | 3,004,786 | 3,126,205 |
MGM Macau [Member] | Land Concession [Member] |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross | 0 | 83,885 |
Less: Accumulated amortization | 0 | (32,035) |
Finite-lived intangible assets, net | $ 0 | $ 51,850 |

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