CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
Apr. 01, 2018	Mar. 26, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 174,763	$ 186,369
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	6,915	15,557
Derivative financial instruments	765	(9,052)
Marketable securities	0	(10)
Pension and postretirement benefit plans	85,765	7,256
Total other comprehensive income, net of tax	93,445	13,751
Comprehensive income	$ 268,208	$ 200,120

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 appreciation (loss) in value of unsold available-for-sale securities, attributable to parent entity. Excludes amounts related to other than temporary impairment (OTTI) loss.

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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, attributable to parent entity.

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