Equity Rollforward (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 28, 2015	Jun. 29, 2014
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period	$ 1,717,576	$ 1,929,486
Comprehensive Income	52,563	74,205
Dividends	(40,189)	(36,648)
Repurchases of common stock	(63,206)	(277,275)
Share-based compensation	12,242	15,158
Exercises of stock options	15,278	23,412
Vesting of restricted shares	(1,393)	(1,397)
Tax benefit from share-based compensation	45,452	17,338
Other	103	87
Balance at end of period	$ 1,738,426	$ 1,744,366