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Income Taxes
3 Months Ended
Mar. 28, 2014
Income Tax Disclosure [Abstract]  
Income Taxes
Income Taxes

During the first quarter of 2014, the state of Indiana enacted legislation reducing the future corporate income tax rate. A net $21 million income tax benefit was recognized primarily as a result of this legislation and the related revaluation of deferred tax liabilities. There have been no material changes to the balance of unrecognized tax benefits during first quarters 2014 and 2013.