Taxes on Earnings (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2011
Domestic and foreign components of earnings (loss) before taxes
U.S.	$ 2,618	$ (3,192)	$ 3,039
Non-U.S.	3,892	(8,741)	5,943
Earnings (loss) before taxes	6,510	(11,933)	8,982
U.S. federal taxes:
Current	475	330	390
Deferred	(666)	81	(590)
Non-U.S. taxes:
Current	1,275	1,139	1,177
Deferred	89	(787)	611
State taxes:
Current	57	(41)	141
Deferred	167	(5)	179
Provision for (benefit from) taxes on earnings	$ 1,397	$ 717	$ 1,908