Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 26, 2022	Jun. 27, 2021	Jun. 26, 2022	Jun. 27, 2021
Statement of Comprehensive Income [Abstract]
Net earnings	$ 309	$ 1,815	$ 2,042	$ 3,652
Postretirement benefit plans
Net other comprehensive income recognized during the period, net of tax of $461 million	1,698	0	1,698	0
Amounts reclassified from accumulated other comprehensive loss	47	140	95	280
Pension settlement charge, net of tax of $314 million	1,156	0	1,156	0
Other, net	(90)	31	(111)	4
Other comprehensive income, net of tax	2,811	171	2,838	284
Comprehensive income	$ 3,120	$ 1,986	$ 4,880	$ 3,936