|3 Months Ended|
Mar. 31, 2020
|Income Tax Disclosure [Abstract]|
Our 2020 estimated annual effective tax rate before discrete items as of March 31, 2020 is 47.4%. The estimated annual effective tax rate differs from the U.S. statutory rate of 21.0% primarily due to the deduction for percentage depletion in excess of cost depletion related to our Mining and Pelletizing segment operations, as well as non-deductible transaction costs, executive officers' compensation, global intangible low-taxed income and income for noncontrolling interests for which no tax is recognized. The 2019 estimated annual effective tax rate before discrete items as of March 31, 2019 was 12.9%. The increase in the estimated annual effective tax rate before discrete items is driven by the change in the mix of income, as well as transaction costs and other acquisition related charges that were incurred only in 2020.For the three months ended March 31, 2020, we recorded discrete items that resulted in an income tax benefit of $4.0 million. The discrete adjustments are primarily related to interest on uncertain tax positions in the quarter and the refund of amounts sequestered by the Internal Revenue Service on previously filed AMT credit refunds. For the three months ended March 31, 2019, we recorded discrete items that resulted in an income tax benefit of $0.4 million.
The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef