Treasury Stock (Details) (USD $) Share data in Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013	Feb. 24, 2014
Treasury Stock Transactions, Excluding Value of Shares Reissued [Abstract]
Additional amount authorized under share repurchase program					$ 1,000,000,000
Board-approved share repurchase program of common stock	2,000,000,000		2,000,000,000
Stock repurchase period			December 2017
Repurchased shares under the share repurchase program	1.6	0.4	3.8	1.8
Cost of share repurchased under the share repurchase program	97,400,000	21,300,000	244,382,000	90,601,000
Remaining authorization under the share repurchase program	$ 917,400,000		$ 917,400,000