Income Taxes	6 Months Ended
Jun. 30, 2013
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company records income tax expense during interim periods based on its best estimate of the full year’s tax rate. Certain items are given discrete period treatment and, as a result, the tax effects of such items are reported in full in the relevant interim period. The Company’s tax rate was 22.5% and 29.9% for the three and six months ended June 30, 2013 compared to 38.3% and 37.1% for the three and six months ended June 30, 2012. During the three months ended June 30, 2013, the IRS completed its examination of the previously filed federal income tax refund claims filed for Domestic Manufacturing Deductions under Internal Revenue Code Section 199 and research and experimentation credits for the periods 2006 through 2009. As a result, the Company has recognized income tax benefits of $14.1 million and $16.1 million during the three and six months ended June 30, 2013 resulting from the reversal of previously reserved tax positions related to these matters. The income tax benefit for the research and experimentation credits relates to the resolved claim years and certain post-audit periods that are still subject to examination. The income tax benefit for the Domestic Manufacturing Deductions relates only to the resolved claim years. The full year 2013 tax rate can be affected as a result of variances among the estimates and amounts of full year sources of taxable income (e.g., domestic consolidated, joint venture and/or international), the realization of tax credits (e.g., historic rehabilitation, research and experimentation, foreign tax and state incentive), adjustments which may arise from the resolution of tax matters under review and the Company’s assessment of its liability for uncertain tax positions.

Income Taxes

6 Months Ended

Jun. 30, 2013

The Company records income tax expense during interim periods based on its best estimate of the full year’s tax rate. Certain items are given discrete period treatment and, as a result, the tax effects of such items are reported in full in the relevant interim period. The Company’s tax rate was 22.5% and 29.9% for the three and six months ended June 30, 2013 compared to 38.3% and 37.1% for the three and six months ended June 30, 2012.

During the three months ended June 30, 2013, the IRS completed its examination of the previously filed federal income tax refund claims filed for Domestic Manufacturing Deductions under Internal Revenue Code Section 199 and research and experimentation credits for the periods 2006 through 2009. As a result, the Company has recognized income tax benefits of $14.1 million and $16.1 million during the three and six months ended June 30, 2013 resulting from the reversal of previously reserved tax positions related to these matters. The income tax benefit for the research and experimentation credits relates to the resolved claim years and certain post-audit periods that are still subject to examination. The income tax benefit for the Domestic Manufacturing Deductions relates only to the resolved claim years.

The full year 2013 tax rate can be affected as a result of variances among the estimates and amounts of full year sources of taxable income (e.g., domestic consolidated, joint venture and/or international), the realization of tax credits (e.g., historic rehabilitation, research and experimentation, foreign tax and state incentive), adjustments which may arise from the resolution of tax matters under review and the Company’s assessment of its liability for uncertain tax positions.