Income Taxes	6 Months Ended
Jun. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our effective tax rate for the three and six months ended June 30, 2019 was 14.1% and 14.0%, respectively, compared to 15.9% and 14.6% for the three and six months ended June 30, 2018, respectively. In both periods, our effective tax rate was favorably impacted by the recognition of income tax benefits related to excess tax benefits from stock option exercises. Excess tax benefits were $30,727 and $59,205 for the three and six months ended June 30, 2019, respectively and $26,456 and $46,022 for the three and six months ended June 30, 2018, respectively.

Income Taxes

6 Months Ended

Jun. 30, 2019

Our effective tax rate for the three and six months ended June 30, 2019 was 14.1% and 14.0%, respectively, compared to 15.9% and 14.6% for the three and six months ended June 30, 2018, respectively. In both periods, our effective tax rate was favorably impacted by the recognition of income tax benefits related to excess tax benefits from stock option exercises. Excess tax benefits were $30,727 and $59,205 for the three and six months ended June 30, 2019, respectively and $26,456 and $46,022 for the three and six months ended June 30, 2018, respectively.