Balance Sheet Details - Other Non-Current Liabilities (Details) - USD ($) $ in Millions	Jul. 31, 2016	Oct. 31, 2015
Balance Sheet Related Disclosures [Abstract]
Pension, post-retirement, and post-employment liabilities	$ 2,002	$ 2,203
Deferred tax liability	1,594	1,813
Tax liability	1,050	1,803
Deferred revenue	830	812
Tax indemnifications payable	70	0
Other	730	783
Other non-current liabilities	$ 6,276	$ 7,414