Income Taxes	6 Months Ended
Jun. 30, 2016
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our effective tax rates for the second quarter and the first six months of 2016 were 28 percent and 31 percent, respectively, compared with 30 percent and 29 percent for the corresponding periods of 2015. The effective tax rate varies from the federal statutory tax rate of 35 percent primarily as a result of state tax expense, partially offset by the manufacturing deduction and foreign operations. The decrease in the effective tax rate for the second quarter of 2016, compared with the second quarter of 2015, was primarily attributable to a favorable tax ruling in the United Kingdom and the relative impact of foreign earnings that are subject to a lower tax rate, partially offset by a decrease in the manufacturing deduction and recognition of a nontaxable gain in 2015 associated with the sale of ICHP. The increase in the effective tax rate for the first six months of 2016, compared with the first six months of 2015, was primarily attributable to a decrease in the manufacturing deduction in the first six months of 2016 and recognition of a nontaxable gain in 2015 associated with the sale of ICHP, partially offset by the relative impact of foreign earnings that are subject to a lower tax rate. For additional information on the nontaxable gain, see Note 5—Assets Held for Sale or Sold.

Income Taxes

6 Months Ended

Jun. 30, 2016

Our effective tax rates for the second quarter and the first six months of 2016 were 28 percent and 31 percent, respectively, compared with 30 percent and 29 percent for the corresponding periods of 2015.

The effective tax rate varies from the federal statutory tax rate of 35 percent primarily as a result of state tax expense, partially offset by the manufacturing deduction and foreign operations.

The decrease in the effective tax rate for the second quarter of 2016, compared with the second quarter of 2015, was primarily attributable to a favorable tax ruling in the United Kingdom and the relative impact of foreign earnings that are subject to a lower tax rate, partially offset by a decrease in the manufacturing deduction and recognition of a nontaxable gain in 2015 associated with the sale of ICHP.

The increase in the effective tax rate for the first six months of 2016, compared with the first six months of 2015, was primarily attributable to a decrease in the manufacturing deduction in the first six months of 2016 and recognition of a nontaxable gain in 2015 associated with the sale of ICHP, partially offset by the relative impact of foreign earnings that are subject to a lower tax rate. For additional information on the nontaxable gain, see Note 5—Assets Held for Sale or Sold.