Consolidated Statements of Stockholders' Deficit - USD ($) $ in Millions	Total	Convertible Junior Preference Stock Series D [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]
Stockholders' Equity balance at beginning of period at Oct. 31, 2016	$ (5,293)	$ 2	$ 9	$ 2,499	$ (4,963)	$ (2,640)	$ (205)	$ 5
Net income (loss)	(129)	0	0	0	(142)	0	0	13
Total other comprehensive income	61	0	0	0	0	61	0	0
Stock-based compensation	3	0	0	3	0	0	0	0
Stock ownership programs	1	0	0	(13)	0	0	14	0
Dividends paid by subsidiaries to non-controlling interest	(15)	0	0	0	0	0	0	(15)
Issuance of common stock	256	0	2	254	0	0	0	0
Payments of Stock Issuance Costs	11	0	0	11	0	0	0	0
Stock Deferral and Issuance to Directors	0	0	0	0	0	0	0	0
Stockholders' Equity, Other	0	0	(1)	0	0	0	0	1
Stockholders' Equity balance at end of period at Apr. 30, 2017	(5,127)	2	10	2,732	(5,105)	(2,579)	(191)	4
Stockholders' Equity balance at beginning of period at Oct. 31, 2017	(4,574)	2	10	2,733	(4,933)	(2,211)	(179)	4
Net income (loss)	(5)	0	0	0	(18)	0	0	13
Total other comprehensive income	57	0	0	0	0	57	0	0
Stock-based compensation	7	0	0	7	0	0	0	0
Stock ownership programs	3	0	0	(10)	0	0	13	0
Dividends paid by subsidiaries to non-controlling interest	(14)	0	0	0	0	0	0	(14)
Issuance of common stock	0	0	0	0	0	0	0	0
Payments of Stock Issuance Costs	0	0	0	0	0	0	0	0
Stock Deferral and Issuance to Directors	(1)	0	0	(1)	0	0	0	0
Stockholders' Equity, Other	0	0	0	0	0	0	0	0
Stockholders' Equity balance at end of period at Apr. 30, 2018	$ (4,527)	$ 2	$ 10	$ 2,729	$ (4,951)	$ (2,154)	$ (166)	$ 3