Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
Sep. 25, 2021	Sep. 26, 2020	Sep. 28, 2019
Federal:
Current	$ 8,257	$ 6,306	$ 6,384
Deferred	(7,176)	(3,619)	(2,939)
Total	1,081	2,687	3,445
State:
Current	1,620	455	475
Deferred	(338)	21	(67)
Total	1,282	476	408
Foreign:
Current	9,424	3,134	3,962
Deferred	2,740	3,383	2,666
Total	12,164	6,517	6,628
Provision for income taxes	$ 14,527	$ 9,680	$ 10,481

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