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Income Taxes
3 Months Ended
Mar. 31, 2020
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes

Our effective tax rate for the three months ended March 31, 2020 and 2019 was 68% and 7%, respectively. The difference between our effective tax rate and the U.S. federal statutory rate of 21% in both periods was primarily the result of foreign income taxed at different rates, discrete tax adjustments, and for the three months ended March 31, 2020, tax expense related to the intra-group transfer of intellectual property.