Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 26, 2015	Jun. 27, 2014	Jun. 26, 2015	Jun. 27, 2014
Basic:
Net income	$ 70,339	$ 127,004	$ 165,191	$ 243,518
Basic weighted shares outstanding (in shares)	301,799	311,000	301,561	313,713
Net income per share (in dollars per share)	$ 0.23	$ 0.41	$ 0.55	$ 0.78
Diluted:
Net income	$ 70,339	$ 127,004	$ 165,191	$ 243,518
Basic weighted shares outstanding (in shares)	301,799	311,000	301,561	313,713
Stock options, ESPP, and restricted stock unit shares (in shares)	2,805	2,513	2,390	2,432
Diluted weighted shares outstanding	304,604	313,513	303,951	316,145
Net income per share (in dollars per share)	$ 0.23	$ 0.41	$ 0.54	$ 0.77
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	100	2,200	700	2,000