Consolidated Condensed Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
Statement of Comprehensive Income [Abstract]
Net earnings	$ 1,179	$ 880	$ 2,764	$ 3,876
Change in unrealized components of available-for-sale debt securities:
Unrealized gains (losses) arising during the period	0	2	0	(3)
Losses (gains) reclassified into earnings	0	0	3	(5)
Change in unrealized components of available-for-sale securities	0	2	3	(8)
Change in unrealized components of cash flow hedges:
Unrealized gains arising during the period	180	273	271	19
(Gains) losses reclassified into earnings	(86)	17	(259)	363
Change in unrealized components of cash flow hedges	94	290	12	382
Change in unrealized components of defined benefit plans:
(Losses) gains arising during the period	(16)	2	(20)	2
Amortization of actuarial loss and prior service benefit	11	11	34	36
Curtailments, settlements and other	41	1	40	2
Change in unrealized components of defined benefit plans	36	14	54	40
Change in cumulative translation adjustment	(30)	0	(22)	0
Other comprehensive income before taxes	100	306	47	414
Provision for taxes	(63)	(31)	(65)	(35)
Other comprehensive income (loss), net of taxes	37	275	(18)	379
Comprehensive income	$ 1,216	$ 1,155	$ 2,746	$ 4,255