Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 28, 2018	Sep. 29, 2017	Sep. 28, 2018	Sep. 29, 2017
Statement of Comprehensive Income [Abstract]
Net Earnings	$ 92,681	$ 75,460	$ 267,331	$ 216,020
Components of other comprehensive income (loss)
Cumulative translation adjustment	4,161	574	(2,205)	17,921
Pension and postretirement medical liability adjustment	1,972	2,250	6,503	6,034
Income taxes - pension and postretirement medical liability adjustment	(448)	(797)	(1,445)	(2,280)
Other comprehensive income	5,685	2,027	2,853	21,675
Comprehensive Income	$ 98,366	$ 77,487	$ 270,184	$ 237,695

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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