Financial Instruments - Schedule of Information Related to Potential Effect of Company's Use of Master Netting Agreements and Collateral Security Agreements (Detail) - USD ($) $ in Millions	Jan. 31, 2017	Oct. 31, 2016
Offsetting [Abstract]
Derivative assets, Gross amount recognized	$ 24	$ 49
Derivative assets, Gross amount offset	0	0
Derivative assets, Net amount presented	24	49
Derivative assets, Gross amounts not offset	2	7
Derivative assets, Net amount	22	42
Derivative liabilities, Gross amount recognized	3	9
Derivative liabilities, Gross amount offset	0	0
Derivative liabilities, Net amount presented	3	9
Derivative liabilities, Gross amounts not offset	2	7
Derivative liabilities, Net amount	$ 1	$ 2