Taxes on Earnings (Detail 8) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013	Nov. 01, 2015
Carryforward
U.S. foreign tax credits	$ 46
U.S. R&D and other credits	47
Tax credits in state and foreign jurisdictions	360
Deferred tax assets for various tax credit carryforwards	453	$ 2,377
Valuation Allowance
Tax credits in state and foreign jurisdictions	(223)
Balance at end of year	(223)
Valuation allowance balance
Balance at beginning of year	11,915
Income tax (benefit) expense	178	1,544	$ 1,397
Balance at end of year	9,878	11,915
Net payable for certain tax liabilities indemnified under Tax Matters Agreement				$ 390
Increase (decrease) in valuation allowances	(2,000)	525
Deferred tax asset valuation allowance
Valuation allowance balance
Balance at beginning of year	11,915	11,390	10,223
Income tax (benefit) expense	(1,657)	184	1,644
Other comprehensive income, currency translation and charges to other accounts	(380)	341	(477)
Balance at end of year	$ 9,878	$ 11,915	$ 11,390