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Treasury Stock (Details) (USD $)
3 Months Ended 6 Months Ended
Jun. 29, 2013
Jun. 30, 2012
Jun. 29, 2013
Jun. 30, 2012
Treasury Stock Transactions, Excluding Value of Shares Reissued [Abstract]        
Board-approved share repurchase program of common stock     $ 1,000,000,000  
Stock repurchase period     April 2015  
Repurchased shares under the share repurchase program 176,825 1,106,000 699,325 1,160,700
Cost of share repurchased under the share repurchase program 19,400,000 98,400,000 69,304,000 102,536,000
Remaining authorization under the share repurchase program     $ 221,900,000