Taxes on Earnings (Details) - USD ($) $ in Millions	12 Months Ended
Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Domestic and foreign components of earnings (loss) before taxes
U.S.	$ 373	$ 2,565	$ 2,618
Non-U.S.	4,359	3,992	3,892
Earnings before taxes	4,732	6,557	6,510
U.S. federal taxes:
Current	(324)	381	475
Deferred	(1,237)	210	(666)
Non-U.S. taxes:
Current	993	984	1,275
Deferred	678	(42)	89
State taxes:
Current	210	212	57
Deferred	(142)	(201)	167
Provision for (benefit from) taxes on earnings	$ 178	$ 1,544	$ 1,397

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