Consolidated Condensed Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2017	Apr. 30, 2016	Apr. 30, 2017	Apr. 30, 2016
Statement of Comprehensive Income [Abstract]
Net earnings	$ 559	$ 629	$ 1,170	$ 1,221
Change in unrealized gains on available-for-sale securities:
Gains arising during the period	1	1	4	1
Change in unrealized components of cash flow hedges:
Losses arising during the period	(70)	(145)	(239)	(40)
Gains reclassified into earnings	(16)	(62)	(87)	(96)
Change in unrealized components of cash flow hedges	(86)	(207)	(326)	(136)
Change in unrealized components of defined benefit plans:
Gains (losses) arising during the period	13	(4)	13	(4)
Amortization of actuarial loss and prior service benefit	17	12	37	24
Settlements and other	3	1	3	1
Change in unrealized components of defined benefit plans	33	9	53	21
Other comprehensive loss before taxes	(52)	(197)	(269)	(114)
Benefit from (provision for) taxes	7	53	(7)	69
Other comprehensive loss, net of taxes	(45)	(144)	(276)	(45)
Comprehensive income	$ 514	$ 485	$ 894	$ 1,176