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Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 26, 2015
Jun. 27, 2014
Jun. 26, 2015
Jun. 27, 2014
Income Tax Disclosure [Abstract]        
Effective income tax rate 28.00% 28.00% 26.00% 29.00%
Deferred Tax Liabilities Undistributed Foreign Earnings $ 7   $ 7  
Non-recurring income tax benefit     $ 2