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

The provision for income taxes reflected an estimated annual tax rate of 26 percent in the first quarter of 2020, compared with 27 percent in the first quarter of 2019. The decrease in the estimated annual tax rate was primarily due to changes in the geographic mix of profits.