Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Common Stock (Acquired from) Sold to Stock- holders	Accumu- lated Other Compre- hensive Earnings (Losses)	Common Stock Related to ESOP
Beginning Balance at Dec. 26, 2020	$ 15,757	$ 3,455	$ 1,159	$ 14,427	$ 0	$ 201	$ (3,485)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive earnings	4,206			4,412		(206)
Dividends per share	(987)			(987)
Contribution of shares to retirement plans	408	23	267		118
Acquisition of shares from stockholders	(1,137)				(1,137)
Sale of shares to stockholders	263	0	0		263
Retirement of shares	0	(60)		(696)	756
Change for ESOP related shares	(340)						(340)
Ending Balance at Dec. 25, 2021	18,170	3,418	1,426	17,156	0	(5)	(3,825)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive earnings	2,314			2,918		(604)
Dividends per share	(1,166)			(1,166)
Contribution of shares to retirement plans	427	20	254		153
Acquisition of shares from stockholders	(2,137)				(2,137)
Sale of shares to stockholders	382	0	7		375
Retirement of shares	0	(114)		(1,495)	1,609
Change for ESOP related shares	(204)						(204)
Ending Balance at Dec. 31, 2022	17,786	3,324	1,687	17,413	0	(609)	(4,029)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive earnings	4,554			4,349		205
Dividends per share	(1,296)			(1,296)
Contribution of shares to retirement plans	450	22	309		119
Acquisition of shares from stockholders	(1,165)				(1,165)
Sale of shares to stockholders	278	0	9		269
Retirement of shares	0	(52)		(725)	777
Change for ESOP related shares	(191)						(191)
Ending Balance at Dec. 30, 2023	$ 20,416	$ 3,294	$ 2,005	$ 19,741	$ 0	$ (404)	$ (4,220)