Income Taxes	3 Months Ended	6 Months Ended
Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Taxes [Abstract]
Income Taxes			Note 11. Income Taxes Our effective income tax rates were 29.1% and 30.1% for the three and six months ended June 30, 2014, respectively, compared to 30.8% and 28.8% for the three and six months ended June 30, 2013, respectively. The decrease in our effective income tax rate for the three months ended June 30, 2014, as compared to the same period of the prior year, was related to the resolution of domestic and international tax audits, which resulted in a net reduction in our provision for uncertain tax positions, and higher relative earnings subject to international tax rates that are lower than domestic tax rates. These favorable factors were partly offset by the U.S. research and development (“R&D”) tax credit which was not available during the three months ended June 30, 2014 because the legislation expired as of January 1, 2014. The increase in our effective income tax rate for the six months ended June 30, 2014, as compared to the same period of the prior year, was related to the R&D tax credit which expired as of January 1, 2014. During the three months ended March 31, 2013, legislation in the U.S. retroactively allowed the R&D tax credit for all of 2012 and extended the R&D tax credit through the year ended December 31, 2013. Because this legislation was enacted during the three months ended March 31, 2013, the full benefit of the credit related to the prior years’ activities was recognized within that quarter. The net unfavorable impact resulting from the absence of the R&D credit during the six months ended June 30, 2014 was partly offset by the resolution of domestic and international tax audits, which resulted in a net reduction in our provision for uncertain tax positions, and higher relative earnings subject to international tax rates that are lower than domestic tax rates.
Effective income tax rate	29.10%	30.80%	30.10%	28.80%

Income Taxes

3 Months Ended

6 Months Ended

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Income Taxes [Abstract]

Income Taxes

Note 11. Income Taxes

Our effective income tax rates were 29.1% and 30.1% for the three and six months ended June 30, 2014, respectively, compared to 30.8% and 28.8% for the three and six months ended June 30, 2013, respectively.

The decrease in our effective income tax rate for the three months ended June 30, 2014, as compared to the same period of the prior year, was related to the resolution of domestic and international tax audits, which resulted in a net reduction in our provision for uncertain tax positions, and higher relative earnings subject to international tax rates that are lower than domestic tax rates. These favorable factors were partly offset by the U.S. research and development (“R&D”) tax credit which was not available during the three months ended June 30, 2014 because the legislation expired as of January 1, 2014.

The increase in our effective income tax rate for the six months ended June 30, 2014, as compared to the same period of the prior year, was related to the R&D tax credit which expired as of January 1, 2014. During the three months ended March 31, 2013, legislation in the U.S. retroactively allowed the R&D tax credit for all of 2012 and extended the R&D tax credit through the year ended December 31, 2013. Because this legislation was enacted during the three months ended March 31, 2013, the full benefit of the credit related to the prior years’ activities was recognized within that quarter. The net unfavorable impact resulting from the absence of the R&D credit during the six months ended June 30, 2014 was partly offset by the resolution of domestic and international tax audits, which resulted in a net reduction in our provision for uncertain tax positions, and higher relative earnings subject to international tax rates that are lower than domestic tax rates.

Effective income tax rate

29.10%

30.80%

30.10%

28.80%