Taxes on Earnings (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Domestic and foreign components of earnings (loss) before taxes
U.S.	$ (368)	$ 192	$ 878
Non-U.S.	4,447	1,278	1,366
Earnings before taxes	4,079	1,470	2,244
U.S. federal taxes:
Current	1,133	1,647	481
Deferred	(1,162)	(3,508)	(460)
Non-U.S. taxes:
Current	1,085	492	375
Deferred	35	527	197
State taxes:
Current	72	47	45
Deferred	(245)	(196)	(42)
Provision for (benefit from) taxes on earnings	$ 918	$ (991)	$ 596