Income Taxes	9 Months Ended
Sep. 30, 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 and nine months ended September 30, 2014, our effective tax rate was 28.2% and 27.8%, compared with 29.7% and 25.9% for the same periods in 2013. The decrease in the third-quarter effective tax rate primarily reflects the impact of the $1.3 million discrete tax charge recorded during the three months ended September 30, 2013 resulting from the impact of the change in the enacted tax rate in the United Kingdom on our previously-recorded deferred tax asset balances, partially offset by the impact of the absence of the Research and Development ("R&D") tax credit in 2014. 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"). The year-to-date effective tax rate increased due to the items mentioned above, as well as changes in our geographic mix of earnings and the impact of the $1.3 million discrete tax benefit recorded during the three months ended March 31, 2013 related to the R&D tax credit for activities completed in 2012. 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

9 Months Ended

Sep. 30, 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 and nine months ended September 30, 2014, our effective tax rate was 28.2% and 27.8%, compared with 29.7% and 25.9% for the same periods in 2013.

The decrease in the third-quarter effective tax rate primarily reflects the impact of the $1.3 million discrete tax charge recorded during the three months ended September 30, 2013 resulting from the impact of the change in the enacted tax rate in the United Kingdom on our previously-recorded deferred tax asset balances, partially offset by the impact of the absence of the Research and Development ("R&D") tax credit in 2014. 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").

The year-to-date effective tax rate increased due to the items mentioned above, as well as changes in our geographic mix of earnings and the impact of the $1.3 million discrete tax benefit recorded during the three months ended March 31, 2013 related to the R&D tax credit for activities completed in 2012. 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.