Balance Sheet Details - Other Liabilities (Details) - USD ($) $ in Millions	Jul. 31, 2016	Oct. 31, 2015
Balance Sheet Related Disclosures [Abstract]
Pension, post retirement and post-employment liabilities	$ 3,133	$ 3,432
Deferred revenue-long term	3,470	3,565
Deferred tax liability-long term	121	41
Tax liability-long term	3,301	778
Other liabilities	1,132	1,086
Total other liabilities	$ 11,157	$ 8,902