Consolidated Condensed Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Statement of Comprehensive Income [Abstract]
Net earnings	$ 734	$ 1,179	$ 2,176	$ 2,764
Change in unrealized components of available-for-sale debt securities:
Unrealized gains arising during the period	2	0	1	0
Losses reclassified into earnings	0	0	0	3
Change in unrealized components of available-for-sale securities	2	0	1	3
Change in unrealized components of cash flow hedges:
Unrealized (losses) gains arising during the period	(563)		(272)
Unrealized (losses) gains arising during the period		180		271
Gains reclassified into earnings	(130)		(242)
Gains reclassified into earnings		(86)		(259)
Change in unrealized components of cash flow hedges	(693)		(514)
Change in unrealized components of cash flow hedges		94		12
Change in unrealized components of defined benefit plans:
Losses arising during the period	(5)	(16)	(6)	(20)
Amortization of actuarial loss and prior service benefit	20	11	61	34
Curtailments, settlements and other	2	41	3	40
Change in unrealized components of defined benefit plans	17	36	58	54
Change in cumulative translation adjustment	15	(30)	4	(22)
Other comprehensive (loss) income before taxes	(659)	100	(451)	47
Benefit from (provision for) taxes	104	(63)	71	(65)
Other comprehensive (loss) income, net of taxes	(555)	37	(380)	(18)
Comprehensive income	$ 179	$ 1,216	$ 1,796	$ 2,746