Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 27, 2019	Sep. 28, 2018	Sep. 27, 2019	Sep. 28, 2018
Statement of Comprehensive Income [Abstract]
Net Earnings	$ 84,132	$ 92,681	$ 259,018	$ 267,331
Components of other comprehensive income (loss)
Cumulative translation adjustment	(6,396)	4,161	(3,995)	(2,205)
Pension and postretirement medical liability adjustment	2,268	1,972	6,305	6,503
Income taxes - pension and postretirement medical liability adjustment	(505)	(448)	(1,398)	(1,445)
Other comprehensive income	(4,633)	5,685	912	2,853
Comprehensive Income	$ 79,499	$ 98,366	$ 259,930	$ 270,184

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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