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Stockholders' Equity - Schedule of Changes in Accumulated Other Comprehensive Loss Attributable to MGM Resorts International by Component (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Beginning Balance | $ 11,179,908 | $ 12,662,919 | $ 10,469,791
Other comprehensive income (loss) before reclassifications | (12,067) | (66,978) | 87
Amounts reclassified from accumulated other comprehensive loss to interest expense | 22,200 | 17,922 | (5,599)
Amounts reclassified from accumulated other comprehensive loss related to de-designation of interest rate swaps to "Other, net" |  | (2,547) | 4,877
Other comprehensive income (loss) | 10,133 | (51,603) | (635)
Other changes in accumulated other comprehensive loss: |  |  |
MGP Class A share issuance | 3,240 | 646 | 1,512
Acquisition transaction |  | (59) |
Redemption of Operating Partnership units | 5,327 | 8,773 |
Other | (2,358) | (1,018) | 481
Changes in accumulated other comprehensive loss | 16,342 | (43,261) | 1,567
Other comprehensive (income) loss attributable to noncontrolling interest | (10,281) | 22,786 | (3,213)
Ending Balance | 10,976,766 | 11,179,908 | 12,662,919
Empire City Transaction |  |  |
Other changes in accumulated other comprehensive loss: |  |  |
Acquisition transaction |  |  | 5,027
MGM Growth Properties LLC | Class A Shareholders |  |  |
Other changes in accumulated other comprehensive loss: |  |  |
MGP Class A share issuance | 759,535 | 507,551 | 1,201,558
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Beginning Balance | 12,964 | (2,747) | (18,872)
Other comprehensive income (loss) before reclassifications | (24,655) | 27,762 | 28,870
Amounts reclassified from accumulated other comprehensive loss to interest expense | 0 | 0 | 0
Amounts reclassified from accumulated other comprehensive loss related to de-designation of interest rate swaps to "Other, net" |  | 0 | 0
Other comprehensive income (loss) | (24,655) | 27,762 | 28,870
Other changes in accumulated other comprehensive loss: |  |  |
Redemption of Operating Partnership units | 0 | 0 |
Other | 0 | 0 | 0
Changes in accumulated other comprehensive loss | (24,655) | 27,762 | 28,870
Other comprehensive (income) loss attributable to noncontrolling interest | 10,784 | (12,051) | (12,745)
Ending Balance | (907) | 12,964 | (2,747)
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest | Empire City Transaction |  |  |
Other changes in accumulated other comprehensive loss: |  |  |
Acquisition transaction |  |  | 0
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest | MGM Growth Properties LLC | Class A Shareholders |  |  |
Other changes in accumulated other comprehensive loss: |  |  |
MGP Class A share issuance | 0 | 0 | 0
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest | Park MGM Transaction |  |  |
Other changes in accumulated other comprehensive loss: |  |  |
Acquisition transaction |  |  | 0
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest | Northfield OpCo |  |  |
Other changes in accumulated other comprehensive loss: |  |  |
Acquisition transaction |  |  | 0
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest | MGP BREIT Venture |  |  |
Other changes in accumulated other comprehensive loss: |  |  |
Acquisition transaction |  | 0 |
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Beginning Balance | (55,357) | (10,829) | 9,144
Other comprehensive income (loss) before reclassifications | 12,588 | (94,740) | (28,783)
Amounts reclassified from accumulated other comprehensive loss to interest expense | 22,200 | 17,922 | (5,599)
Amounts reclassified from accumulated other comprehensive loss related to de-designation of interest rate swaps to "Other, net" |  | (2,547) | 4,877
Other comprehensive income (loss) | 34,788 | (79,365) | (29,505)
Other changes in accumulated other comprehensive loss: |  |  |
Redemption of Operating Partnership units | 0 | 0 |
Other | 0 | 0 | 0
Changes in accumulated other comprehensive loss | 34,788 | (79,365) | (29,505)
Other comprehensive (income) loss attributable to noncontrolling interest | (21,065) | 34,837 | 9,532
Ending Balance | (41,634) | (55,357) | (10,829)
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest | Empire City Transaction |  |  |
Other changes in accumulated other comprehensive loss: |  |  |
Acquisition transaction |  |  | 0
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest | MGM Growth Properties LLC | Class A Shareholders |  |  |
Other changes in accumulated other comprehensive loss: |  |  |
MGP Class A share issuance | 0 | 0 | 0
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest | Park MGM Transaction |  |  |
Other changes in accumulated other comprehensive loss: |  |  |
Acquisition transaction |  |  | 0
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest | Northfield OpCo |  |  |
Other changes in accumulated other comprehensive loss: |  |  |
Acquisition transaction |  |  | 0
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest | MGP BREIT Venture |  |  |
Other changes in accumulated other comprehensive loss: |  |  |
Acquisition transaction |  | 0 |
Accumulated Other Adjustment Including Portion Attributable To Noncontrolling Interest |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Beginning Balance | 11,716 | 3,374 | 1,172
Other comprehensive income (loss) before reclassifications | 0 | 0 | 0
Amounts reclassified from accumulated other comprehensive loss to interest expense | 0 | 0 | 0
Amounts reclassified from accumulated other comprehensive loss related to de-designation of interest rate swaps to "Other, net" |  | 0 | 0
Other comprehensive income (loss) | 0 | 0 | 0
Other changes in accumulated other comprehensive loss: |  |  |
Redemption of Operating Partnership units | 5,327 | 8,773 |
Other | (2,358) | (1,018) | 481
Changes in accumulated other comprehensive loss | 6,209 | 8,342 | 2,202
Other comprehensive (income) loss attributable to noncontrolling interest | 0 | 0 | 0
Ending Balance | 17,925 | 11,716 | 3,374
Accumulated Other Adjustment Including Portion Attributable To Noncontrolling Interest | Empire City Transaction |  |  |
Other changes in accumulated other comprehensive loss: |  |  |
Acquisition transaction |  |  | 195
Accumulated Other Adjustment Including Portion Attributable To Noncontrolling Interest | MGM Growth Properties LLC | Class A Shareholders |  |  |
Other changes in accumulated other comprehensive loss: |  |  |
MGP Class A share issuance | 3,240 | 646 | 1,512
Accumulated Other Adjustment Including Portion Attributable To Noncontrolling Interest | Park MGM Transaction |  |  |
Other changes in accumulated other comprehensive loss: |  |  |
Acquisition transaction |  |  | 16
Accumulated Other Adjustment Including Portion Attributable To Noncontrolling Interest | Northfield OpCo |  |  |
Other changes in accumulated other comprehensive loss: |  |  |
Acquisition transaction |  |  | (2)
Accumulated Other Adjustment Including Portion Attributable To Noncontrolling Interest | MGP BREIT Venture |  |  |
Other changes in accumulated other comprehensive loss: |  |  |
Acquisition transaction |  | (59) |
AOCI Including Portion Attributable to Noncontrolling Interest |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Beginning Balance | (30,677) | (10,202) | (8,556)
Other changes in accumulated other comprehensive loss: |  |  |
Ending Balance | $ (24,616) | $ (30,677) | $ (10,202)

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