Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 27, 2022	Mar. 28, 2021
Statement of Comprehensive Income [Abstract]
Net earnings	$ 1,733	$ 1,837
Other comprehensive income, net of tax
Amortization of previously deferred postretirement benefit plan costs	48	140
Other, net	(21)	(27)
Other comprehensive income, net of tax	27	113
Comprehensive income	$ 1,760	$ 1,950