Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 29, 2015	Sep. 29, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 30, 2014	Sep. 30, 2014	Jul. 01, 2014	Apr. 01, 2014	Dec. 29, 2015	Dec. 30, 2014	Dec. 31, 2013	Jan. 01, 2013	Jul. 31, 2013
Stockholders' Equity
Cash dividends declared per common share (in dollars per share)	$ 0.20	$ 0.20	$ 0.165	$ 0.165	$ 0.165	$ 0.165	$ 0.14	$ 0.14	$ 0.73	$ 0.61	$ 0.52
Stockholders Equity:
Repurchased shares since program inception	44,064,322				41,919,312				44,064,322	41,919,312
Value of shares repurchased since program inception	$ 1,263,422				$ 1,158,652				$ 1,263,422	$ 1,158,652
Treasury stock repurchased during period									$ 109,371	$ 140,483	$ 183,659
Treasury Stock
Stockholders Equity:
Additional number of shares authorized to repurchase													7,500,000
Number of shares authorized to be repurchased													48,500,000
Shares repurchased during period									2,100,000	3,100,000	4,500,000	4,500,000
Treasury stock repurchased during period									$ 104,800	$ 143,200	$ 183,700