Income Taxes	6 Months Ended
Jun. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our effective income tax rates were 27.5% and 28.7% for the six and three months ended June 30, 2017 and 21.9% and 51.1% for the same periods in the prior year. The year-over-year effective tax rate variances for both periods are primarily due to higher year-to-date and projected pre-tax earnings in 2017. In addition, higher share-based compensation tax benefits were recognized for the six-month period of 2017 compared with the prior year. Federal income tax audits have been settled for all years prior to 2013. The Internal Revenue Service (IRS) is currently examining the 2013-2014 tax years. We are also subject to examination in major state and international jurisdictions for the 2001-2016 tax years. We believe appropriate provisions for all outstanding tax issues have been made for all jurisdictions and all open years.

Income Taxes

6 Months Ended

Jun. 30, 2017

Our effective income tax rates were 27.5% and 28.7% for the six and three months ended June 30, 2017 and 21.9% and 51.1% for the same periods in the prior year. The year-over-year effective tax rate variances for both periods are primarily due to higher year-to-date and projected pre-tax earnings in 2017. In addition, higher share-based compensation tax benefits were recognized for the six-month period of 2017 compared with the prior year.

Federal income tax audits have been settled for all years prior to 2013. The Internal Revenue Service (IRS) is currently examining the 2013-2014 tax years. We are also subject to examination in major state and international jurisdictions for the 2001-2016 tax years. We believe appropriate provisions for all outstanding tax issues have been made for all jurisdictions and all open years.