CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Statement of Comprehensive Income [Abstract]
Net earnings	$ 298,128	$ 284,216	$ 191,610
Other comprehensive income:
Foreign currency translation adjustments	46,690	(63,569)	(28,187)
Pension liability adjustment, net of tax	(29,669)	(149,815)	(17,039)
Unrealized gain on interest rate swaps, net of tax	883	5,473	245
Comprehensive income	$ 316,032	$ 76,305	$ 146,629