Condensed Consolidating Guarantor and Non-Guarantor Financial Information - Statement of Comprehsive Income (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Net income (loss)	$ (34)	$ (34)	$ 4	$ (33)	$ (50)	$ (28)	$ (64)	$ (42)	$ (65)	$ (151)	$ (579)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Foreign currency translation adjustment									7	(160)	(52)
Unrealized gain on marketable securities											1
Defined benefit plans (net of tax of $0, for all entities)									(46)	(178)	(388)
Total other comprehensive income (loss)									(39)	(338)	(439)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest									(104)	(489)	(1,018)
Less: Net income attributable to non-controlling interests									32	33	40
Comprehensive Income (Loss), Net of Tax, Attributable to Parent									(136)	(522)	(1,058)
Parent Company [Member]
Net income (loss)									(97)	(184)	(619)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Foreign currency translation adjustment									7	(160)	(52)
Unrealized gain on marketable securities											1
Defined benefit plans (net of tax of $0, for all entities)									(46)	(178)	(388)
Total other comprehensive income (loss)									(39)	(338)	(439)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest									(136)	(522)	(1,058)
Less: Net income attributable to non-controlling interests									0	0	0
Comprehensive Income (Loss), Net of Tax, Attributable to Parent									(136)	(522)	(1,058)
Guarantor Subsidiaries [Member]
Net income (loss)									(107)	(238)	(696)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Foreign currency translation adjustment									0	0	0
Unrealized gain on marketable securities											0
Defined benefit plans (net of tax of $0, for all entities)									1	(192)	(397)
Total other comprehensive income (loss)									1	(192)	(397)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest									(106)	(430)	(1,093)
Less: Net income attributable to non-controlling interests									0	0	0
Comprehensive Income (Loss), Net of Tax, Attributable to Parent									(106)	(430)	(1,093)
Non-Guarantor Subsidiaries [Member]
Net income (loss)									330	414	61
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Foreign currency translation adjustment									7	(160)	(52)
Unrealized gain on marketable securities											1
Defined benefit plans (net of tax of $0, for all entities)									(47)	14	9
Total other comprehensive income (loss)									(40)	(146)	(42)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest									290	268	19
Less: Net income attributable to non-controlling interests									32	33	40
Comprehensive Income (Loss), Net of Tax, Attributable to Parent									258	235	(21)
Consolidation, Eliminations [Member]
Net income (loss)									(191)	(143)	675
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Foreign currency translation adjustment									(7)	160	52
Unrealized gain on marketable securities											(1)
Defined benefit plans (net of tax of $0, for all entities)									46	178	388
Total other comprehensive income (loss)									39	338	439
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest									(152)	195	1,114
Less: Net income attributable to non-controlling interests									0	0	0
Comprehensive Income (Loss), Net of Tax, Attributable to Parent									$ (152)	$ 195	$ 1,114