Net Income Per Share (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 28, 2015	Jun. 29, 2014	Jun. 28, 2015	Jun. 29, 2014
Common Stock:
Weighted average basic shares outstanding	363,766	366,712	365,175	374,132
Dilutive effect of stock options and restricted shares	6,776	5,460	6,700	6,630
Weighted average diluted shares outstanding	370,542	372,172	371,875	380,762
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	434	4,758	599	5,306