Condensed Consolidated and Combined Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2016	Jul. 31, 2015
Statement of Comprehensive Income [Abstract]
Net earnings	$ 2,272	$ 224	$ 2,859	$ 1,076
Change in net unrealized gains (losses) on available-for-sale securities:
Net unrealized gains (losses) arising during the period	7	5	11	(4)
(Gains) losses reclassified into earnings	(1)	0	3	0
Change in unrealized gains on available for sale securities	6	5	14	(4)
Change in net unrealized gains (losses) on cash flow hedges:
Net unrealized gains arising during the period	172	183	108	415
Net gains reclassified into earnings	(19)	(71)	(210)	(370)
Change in unrealized gains on cash flow hedges	153	112	(102)	45
Change in unrealized components of defined benefit plans:
Losses arising during the period	(13)	0	(14)	0
Amortization of actuarial loss and prior service benefit	72	34	214	104
Curtailments, settlements and other	1	0	(16)	1
Change in unrealized components of defined benefit plans	60	34	184	105
Change in cumulative translation adjustment	(183)	(44)	(265)	(112)
Other comprehensive income (loss) before taxes	36	107	(169)	34
(Provision) benefit for taxes	(46)	(14)	7	(36)
Other comprehensive (loss) income, net of tax	(10)	93	(162)	(2)
Comprehensive income	$ 2,262	$ 317	$ 2,697	$ 1,074