Borrowings (Details) - USD ($) $ in Millions	Jul. 31, 2016	Oct. 31, 2015
Notes Payable and Short-Term Borrowings
Current portion of long-term debt	$ 131	$ 161
Amount outstanding	$ 911	$ 691
Current portion of long-term debt	2.30%	2.60%
FS Commercial paper
Notes Payable and Short-Term Borrowings
Amount outstanding	$ 320	$ 39
Weighted average interest rate (as a percent)	0.10%	0.20%
Obligation related to notes payable to banks, lines of credit, uncommitted line of credit and other debt
Notes Payable and Short-Term Borrowings
Amount outstanding	$ 460	$ 491
Weighted average interest rate (as a percent)	2.20%	2.70%
Obligation related to notes payable to banks, lines of credit, uncommitted line of credit and other debt | Financial Services
Notes Payable and Short-Term Borrowings
Short term borrowings	$ 374	$ 374
MphasiS
Notes Payable and Short-Term Borrowings
Amount outstanding	$ 22