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Income Taxes
3 Months Ended
Mar. 31, 2020
Income Tax Disclosure [Abstract]  
Income Taxes Income TaxesWe determine the tax provision for interim periods using an estimate of our annual effective tax rate, adjusted for discrete items, if any, that are taken into account in the relevant period. Each quarter we update our estimate of the annual effective tax rate, and if our estimated tax rate changes, we make a cumulative adjustment. Our effective tax rate was 20.0% and 19.5% for the first three months of 2020 and 2019, respectively.