Income Taxes	3 Months Ended
Mar. 31, 2014
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The tax provision for interim periods is determined using the estimated annual effective consolidated tax rate, based on the current estimate of full-year earnings before taxes, adjusted for the impact of discrete quarterly items. For the three months ended March 31, 2014, our effective tax rate was 27.6% compared with 22.0% for the same period in 2013. The increase in the effective tax rate primarily reflects the absence of the Research and Development ("R&D") tax credit in 2014, changes in our geographic mix of earnings, and the impact of the discrete tax item discussed below. The R&D tax credit was retroactively reinstated in January 2013 for two years, from January 1, 2012 through December 31, 2013, as a result of the enactment of the American Taxpayer Relief Act of 2012 (the "Taxpayer Relief Act"). During the three months ended March 31, 2013, we recorded a discrete tax benefit of $1.3 million related to the R&D tax credit. In accordance with U.S. GAAP, although the Taxpayer Relief Act reinstated the tax credit on a retroactive basis to January 1, 2012, the credit was not taken into account for financial reporting purposes until 2013.

Income Taxes

3 Months Ended

Mar. 31, 2014

The tax provision for interim periods is determined using the estimated annual effective consolidated tax rate, based on the current estimate of full-year earnings before taxes, adjusted for the impact of discrete quarterly items. For the three months ended March 31, 2014, our effective tax rate was 27.6% compared with 22.0% for the same period in 2013. The increase in the effective tax rate primarily reflects the absence of the Research and Development ("R&D") tax credit in 2014, changes in our geographic mix of earnings, and the impact of the discrete tax item discussed below. The R&D tax credit was retroactively reinstated in January 2013 for two years, from January 1, 2012 through December 31, 2013, as a result of the enactment of the American Taxpayer Relief Act of 2012 (the "Taxpayer Relief Act").

During the three months ended March 31, 2013, we recorded a discrete tax benefit of $1.3 million related to the R&D tax credit. In accordance with U.S. GAAP, although the Taxpayer Relief Act reinstated the tax credit on a retroactive basis to January 1, 2012, the credit was not taken into account for financial reporting purposes until 2013.