Consolidated Condensed Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2020	Jan. 31, 2019
Statement of Comprehensive Income [Abstract]
Net earnings	$ 678	$ 803
Change in unrealized components of available-for-sale debt securities:
Unrealized gain arising during the period	1	0
Change in unrealized components of available-for-sale securities	1	0
Change in unrealized components of cash flow hedges:
Unrealized gains (losses) arising during the period	60
Unrealized gains (losses) arising during the period		(107)
(Gains) losses reclassified into earnings	(59)
(Gains) losses reclassified into earnings		(179)
Change in unrealized components of cash flow hedges	1
Change in unrealized components of cash flow hedges		(286)
Change in unrealized components of defined benefit plans:
Amortization of actuarial loss and prior service benefit	20	11
Curtailments, settlements and other	0	(2)
Change in unrealized components of defined benefit plans	20	9
Change in cumulative translation adjustment	6	(5)
Other comprehensive income (loss) before taxes	28	(282)
(Provision for) benefit from taxes	(11)	40
Other comprehensive income (loss), net of taxes	17	(242)
Comprehensive income	$ 695	$ 561