Consolidated Condensed Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Statement of Comprehensive Income [Abstract]
Net earnings	$ 1,938	$ 611
Change in unrealized components of available-for-sale securities:
Unrealized (losses) gains arising during the period	(3)	3
Gains reclassified into earnings	(5)	0
Change in unrealized components of available-for-sale securities	(8)	3
Change in unrealized components of cash flow hedges:
Unrealized losses arising during the period	(551)	(169)
Losses (gains) reclassified into earnings	70	(71)
Change in unrealized components of cash flow hedges	(481)	(240)
Change in unrealized components of defined benefit plans:
Amortization of actuarial loss and prior service benefit	12	20
Curtailments, settlements and other	1	0
Change in unrealized components of defined benefit plans	13	20
Other comprehensive loss before taxes	(476)	(217)
Benefit from (provision for) taxes	65	(14)
Other comprehensive loss, net of taxes	(411)	(231)
Comprehensive income	$ 1,527	$ 380