Income Taxes

6 Months Ended

Jun. 30, 2019

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The effective income tax rates were 21.0% and 20.2% for the three months ended June 30, 2019 and 2018, respectively. The effective income tax rates were 20.0% and 19.6% for the six months ended June 30, 2019 and 2018, respectively.

The effective income tax rate for the three months ended June 30, 2019 was the same as the U.S. federal income tax rate of 21.0% due to excess tax benefits from share-based compensation of $1.0 million and the impact of foreign operations, partially offset by state income taxes. The effective income tax rate for the six months ended June 30, 2019 was lower than the U.S. federal income tax rate of 21.0% due to excess tax benefits from share-based compensation of $3.0 million and the impact of foreign operations, partially offset by state income taxes. The effective income tax rate for the three and six months ended June 30, 2018 was lower than the U.S. federal income tax rate of 21.0% due to excess tax benefits from share-based compensation of $1.9 million and $3.5 million, respectively, and the impact of foreign operations, partially offset by state income taxes.