Consolidated Condensed Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2019	Jan. 31, 2018
Statement of Comprehensive Income [Abstract]
Net earnings	$ 803	$ 1,938
Change in unrealized components of available-for-sale debt securities:
Unrealized losses arising during the period	0	(3)
Gains reclassified into earnings	0	(5)
Change in unrealized components of available-for-sale securities	0	(8)
Change in unrealized components of cash flow hedges:
Unrealized losses arising during the period	(107)	(551)
(Gains) losses reclassified into earnings	(179)	70
Change in unrealized components of cash flow hedges	(286)	(481)
Change in unrealized components of defined benefit plans:
Amortization of actuarial loss and prior service benefit	11	12
Settlements and other	(2)	1
Change in unrealized components of defined benefit plans	9	13
Change in cumulative translation adjustment	(5)	0
Other comprehensive loss before taxes	(282)	(476)
Benefit from taxes	40	65
Other comprehensive loss, net of taxes	(242)	(411)
Comprehensive income	$ 561	$ 1,527