Income Taxes	3 Months Ended
Mar. 31, 2014
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company's provision for income taxes is based upon an estimated annual tax rate for the year applied to federal, state and foreign income. On a quarterly basis, the annual effective tax rate is adjusted, as appropriate, based upon changed facts and circumstances, if any, as compared to those forecasted at the beginning of the fiscal year and each interim period thereafter. At March 31, 2014, the Company's effective tax rate for the first quarter was 28.9%, which includes tax benefits of $8.8 million related to restructuring expense discussed in the Other Expense footnote. At March 31, 2013, the Company's effective tax rate for the first quarter was 25.5%. This rate included tax benefits of $3.8 million and $2.1 million related to the program termination agreement and retirement related obligations discussed in the Other Expense footnote. This rate also included a net tax benefit of $1.7 million, which is comprised of a $6.6 million tax benefit related to the extension of the federal research and development credit and other international tax provisions resulting from the retroactive impact of U.S. legislation enacted in January 2013, partially offset by a $4.9 million tax expense related to a comprehensive income adjustment. The annual effective tax rates differ from the U.S. statutory rate primarily due to foreign rates which differ from those in the U.S., the realization of certain business tax credits, including foreign tax credits, and favorable permanent differences between book and tax treatment for certain items, including equity in affiliates' earnings.

Income Taxes

3 Months Ended

Mar. 31, 2014

The Company's provision for income taxes is based upon an estimated annual tax rate for the year applied to federal, state and foreign income. On a quarterly basis, the annual effective tax rate is adjusted, as appropriate, based upon changed facts and circumstances, if any, as compared to those forecasted at the beginning of the fiscal year and each interim period thereafter.

At March 31, 2014, the Company's effective tax rate for the first quarter was 28.9%, which includes tax benefits of $8.8 million related to restructuring expense discussed in the Other Expense footnote.

At March 31, 2013, the Company's effective tax rate for the first quarter was 25.5%. This rate included tax benefits of $3.8 million and $2.1 million related to the program termination agreement and retirement related obligations discussed in the Other Expense footnote. This rate also included a net tax benefit of $1.7 million, which is comprised of a $6.6 million tax benefit related to the extension of the federal research and development credit and other international tax provisions resulting from the retroactive impact of U.S. legislation enacted in January 2013, partially offset by a $4.9 million tax expense related to a comprehensive income adjustment.

The annual effective tax rates differ from the U.S. statutory rate primarily due to foreign rates which differ from those in the U.S., the realization of certain business tax credits, including foreign tax credits, and favorable permanent differences between book and tax treatment for certain items, including equity in affiliates' earnings.