Quarterly Results (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Jan. 02, 2016	Oct. 03, 2015	Jul. 04, 2015	Apr. 04, 2015	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Selected Quarterly Financial Information [Line Items]
Revenue	$ 1,257,819	$ 1,184,557	$ 1,215,962	$ 1,138,135	$ 1,175,294	$ 1,127,887	$ 1,125,997	$ 996,089	$ 4,796,473	$ 4,425,267	$ 3,402,703
Earnings before income taxes	215,715	241,808	243,782	217,129	227,932	215,671	170,657	167,120	918,434	781,380	774,174
Net earnings	$ 149,691	$ 169,979	$ 166,454	$ 150,360	$ 166,108	$ 147,282	$ 115,038	$ 110,934	$ 636,484	$ 539,362	$ 525,433
Basic earnings per share	$ 0.45	$ 0.5	$ 0.49	$ 0.44	$ 0.49	$ 0.43	$ 0.33	$ 0.32	$ 1.88	$ 1.57	$ 1.54
Diluted earnings per share	$ 0.44	$ 0.49	$ 0.48	$ 0.43	$ 0.48	$ 0.42	$ 0.33	$ 0.32	$ 1.85	$ 1.54	$ 1.50
Acquisition-related Costs [Member]
Selected Quarterly Financial Information [Line Items]
Quarterly Financial Information, Quarterly Charges and Credits, Amount Affecting Comparability					$ 1,000	$ 1,000	$ 3,000	$ 17,000
Voluntary Separation Plan Costs [Member]
Selected Quarterly Financial Information [Line Items]
Quarterly Financial Information, Quarterly Charges and Credits, Amount Affecting Comparability	$ 36,000				$ 1,000	$ 3,000	$ 42,000