Revision of Prior Period Consolidated Financial Statements - Revised Consolidated Statements of Comprehensive Income (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2020
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net earnings	$ 3,132	$ 6,541	$ 2,815
(Losses) gains arising during the period	(54)	1,029	(29)
Other comprehensive income (loss) before taxes	639	1,217	(19)
(Provision for) benefit from taxes	(109)	(219)	1
Other comprehensive income (loss), net of taxes	530	998	(18)
Comprehensive income	3,662	7,539	2,797
As reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net earnings	3,203	6,503	2,844
(Losses) gains arising during the period	4	1,008
Other comprehensive income (loss) before taxes	697	1,196
(Provision for) benefit from taxes	(124)	(213)
Other comprehensive income (loss), net of taxes	573	983
Comprehensive income	3,776	7,486	2,826
Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net earnings	(71)	38	(29)
(Losses) gains arising during the period	(58)	21
Other comprehensive income (loss) before taxes	(58)	21
(Provision for) benefit from taxes	15	(6)
Other comprehensive income (loss), net of taxes	(43)	15
Comprehensive income	$ (114)	$ 53	$ (29)