Income Taxes - Reconciliation of Income Tax to Statutory Income Tax (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	$ 36	$ 195	$ 341
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount	0	(4)	(4)
Effective Income Tax Rate Reconciliation, Tax Credit, Amount	4	(5)	0
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount	(41)	(234)	(350)
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount	(48)	(31)	(8)
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount	(31)	(6)	0
Effective Income Tax Rate Reconciliation, Tax Contingency, Amount	(1)	15	(16)
Effective Income Tax Rate Reconciliation, Tax Expense related to Equity Components	0	13	220
Effective Income Tax Rate Reconciliation, Noncontrolling Interest Income (Loss), Amount	11	14	19
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount	19	17	(31)
Income Tax Expense (Benefit)	$ (51)	$ (26)	$ 171