CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net earnings	$ 661,057	$ 616,172	$ 1,642,028	$ 1,296,443
Other comprehensive earnings:
Unrealized gain (loss) on debt securities net of income taxes in 2019 and 2018, respectively.	58,130	(2,600)	117,651	(26,581)
Reclassification adjustment for net realized loss on debt securities net of income taxes in 2019 and 2018, respectively.	37	425	330	447
Adjustment to postretirement benefit obligation net of income taxes in 2018.	0	564	0	1,129
Comprehensive earnings	$ 719,224	$ 614,561	$ 1,760,009	$ 1,271,438

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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