Income Taxes

6 Months Ended

Jun. 30, 2018

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The provision for income taxes reflects an estimated annual tax rate of 24 percent in the second quarter of 2018, compared with 30 percent in the second quarter of 2017. The decrease in the estimated annual tax rate is primarily due to the reduction in the U.S. corporate tax rate beginning January 1, 2018, along with changes in the geographic mix of profits.