Other Comprehensive Income Components of Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Net earnings	$ 92,210	$ 83,988	$ 161,223	$ 149,408
Currency Translation Adjustment	(12,445)	(41,963)	(1,762)	(20,161)
Change in unrecognized pension benefit costs, net of tax	5,254	13,754	(9)	6,499
Unrealized gain on interest rate swaps, net of tax	(14,124)	3,045	(23,491)	7,981
Comprehensive income	$ 70,895	$ 58,824	$ 135,961	$ 143,727

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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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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