Net Income Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 27, 2014	Jun. 28, 2013	Jun. 27, 2014	Jun. 28, 2013
Basic:
Net income	$ 127,004	$ 101,509	$ 243,518	$ 221,698
Basic weighted shares outstanding (in shares)	311,000,000	320,472,000	313,713,000	320,175,000
Net income per share (in dollars per share)	$ 0.41	$ 0.32	$ 0.78	$ 0.69
Diluted:
Net income	$ 127,004	$ 101,509	$ 243,518	$ 221,698
Basic weighted shares outstanding (in shares)	311,000,000	320,472,000	313,713,000	320,175,000
Stock options, ESPP, and restricted stock unit shares (in shares)	2,513,000	3,055,000	2,432,000	3,104,000
Diluted weighted shares outstanding	313,513,000	323,527,000	316,145,000	323,279,000
Net income per share (in dollars per share)	$ 0.41	$ 0.31	$ 0.77	$ 0.69
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	2,200,000	2,200,000	2,000,000	1,900,000