Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Statement of Comprehensive Income [Abstract]
Net earnings	$ 2,496	$ 4,554	$ 5,013
Change in unrealized gains (losses) on available-for-sale securities:
Unrealized gains (losses) arising during the period	1	(17)	7
Gains reclassified into earnings	0	0	(1)
Change in unrealized (losses) gains arising during the period	1	(17)	6
Change in unrealized components of cash flow hedges:
Unrealized gains arising during the period	199	1,091	337
Losses (gains) reclassified into earnings	63	(1,312)	151
Change in unrealized components of cash flow hedges:	262	(221)	488
Change in unrealized components of defined benefit plans:
Losses arising during the period	(759)	(548)	(2,756)
Amortization of actuarial loss and prior service benefit	51	443	259
Curtailments, settlements and other	183	115	51
Change in unrealized components of defined benefit plans	(525)	10	(2,446)
Change in cumulative translation adjustment	0	(207)	(85)
Other comprehensive loss before taxes	(262)	(435)	(2,037)
Benefit from (provision for) taxes	45	14	(66)
Other comprehensive loss, net of taxes	(217)	(421)	(2,103)
Comprehensive income	$ 2,279	$ 4,133	$ 2,910