Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Statement of Comprehensive Income [Abstract]
Net earnings	$ 267	$ 267
Change in net unrealized (losses) gains on available-for-sale securities:
Net unrealized (losses) gains arising during the period	(13)	2
Losses reclassified into earnings	0	9
Change in unrealized gains on available for sale securities	(13)	11
Change in net unrealized (losses) gains on cash flow hedges:
Net unrealized gains arising during the period	136	142
Net gains reclassified into earnings	(163)	(121)
Change in unrealized gains on cash flow hedges	(27)	21
Change in unrealized components of defined benefit plans:
Gains arising during the period	479	0
Amortization of actuarial loss and prior service benefit	97	72
Curtailments, settlements and other	0	(18)
Change in unrealized components of defined benefit plans	576	54
Change in cumulative translation adjustment	(25)	(139)
Other comprehensive income (loss) before taxes	511	(53)
Provision for taxes	(36)	(24)
Other comprehensive income (loss), net of taxes	475	(77)
Comprehensive income	$ 742	$ 190