Income Taxes	3 Months Ended
Mar. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	NOTE 5 — INCOME TAXES For interim income tax reporting the Company estimates its annual effective tax rate and applies it to its year-to-date ordinary income. The tax effects of unusual or infrequently occurring items, including changes in judgment about valuation allowances and effects of changes in tax laws or rates, are reported in the interim period in which they occur. The Company’s effective income tax rate was 28.0% and 51.9% for the three months ended March 31, 2020 and 2019 respectively. The Company recognizes deferred income tax assets, net of applicable reserves, related to net operating losses, tax credit carryforwards and certain temporary differences. The Company recognizes future tax benefits to the extent that realization of such benefit is more likely than not. Otherwise, a valuation allowance is applied. Due to the impact of COVID-19 on its business operations, the Company increased its valuation allowances for Macau deferred tax assets and its foreign tax credits (“FTCs”) by $25 million and $13 million, respectively, with a corresponding increase to provision for income taxes for the quarter ended March 31, 2020. In addition, the Company recorded an income tax benefit of $6 million resulting from recently issued guidance related to deductions for employee dining facilities and income tax expense of $349 million related to the MGP BREIT Venture Transaction that closed on February 14, 2020. The Company's FTCs are attributable to the Macau Special Gaming Tax, which is 35% of gross gaming revenue in Macau. Significant judgment is required in assessing the need for a valuation allowance and future changes to assumptions used in this assessment could result in material changes in the valuation allowance with a corresponding impact on the provision for income taxes in the period including such change. On March 30, 2020, MGM Grand Paradise was granted an extension of its exemption from the Macau 12% complementary tax on gaming profits through June 26, 2022, concurrent with the end of the term of its gaming subconcession. The prior exemption was set to expire on March 31, 2020. The Company previously re-measured its net deferred tax liability for MGM Grand Paradise during 2019 assuming it would receive the complementary tax exemption extension through June 26, 2022 as a result of required non-discriminatory treatment among gaming concessionaires and sub-concessionaires under Macanese law. As a result, no additional remeasurement is required for the three months ended March 31, 2020. The Company continues to assume that MGM Grand Paradise will pay the Macau 12% complementary tax on gaming profits for all periods beyond June 26, 2022 and has factored that assumption into the measurement of Macau deferred tax assets and liabilities.

Income Taxes

3 Months Ended

Mar. 31, 2020

NOTE 5 — INCOME TAXES

For interim income tax reporting the Company estimates its annual effective tax rate and applies it to its year-to-date ordinary income. The tax effects of unusual or infrequently occurring items, including changes in judgment about valuation allowances and effects of changes in tax laws or rates, are reported in the interim period in which they occur. The Company’s effective income tax rate was 28.0% and 51.9% for the three months ended March 31, 2020 and 2019 respectively.

The Company recognizes deferred income tax assets, net of applicable reserves, related to net operating losses, tax credit carryforwards and certain temporary differences. The Company recognizes future tax benefits to the extent that realization of such benefit is more likely than not. Otherwise, a valuation allowance is applied.

Due to the impact of COVID-19 on its business operations, the Company increased its valuation allowances for Macau deferred tax assets and its foreign tax credits (“FTCs”) by $25 million and $13 million, respectively, with a corresponding increase to provision for income taxes for the quarter ended March 31, 2020. In addition, the Company recorded an income tax benefit of $6 million resulting from recently issued guidance related to deductions for employee dining facilities and income tax expense of $349 million related to the MGP BREIT Venture Transaction that closed on February 14, 2020.

The Company's FTCs are attributable to the Macau Special Gaming Tax, which is 35% of gross gaming revenue in Macau. Significant judgment is required in assessing the need for a valuation allowance and future changes to assumptions used in this assessment could result in material changes in the valuation allowance with a corresponding impact on the provision for income taxes in the period including such change.

On March 30, 2020, MGM Grand Paradise was granted an extension of its exemption from the Macau 12% complementary tax on gaming profits through June 26, 2022, concurrent with the end of the term of its gaming subconcession. The prior exemption was set to expire on March 31, 2020. The Company previously re-measured its net deferred tax liability for MGM Grand Paradise during 2019 assuming it would receive the complementary tax exemption extension through June 26, 2022 as a result of required non-discriminatory treatment among gaming concessionaires and sub-concessionaires under Macanese law. As a result, no additional remeasurement is required for the three months ended March 31, 2020. The Company continues to assume that MGM Grand Paradise will pay the Macau 12% complementary tax on gaming profits for all periods beyond June 26, 2022 and has factored that assumption into the measurement of Macau deferred tax assets and liabilities.