Condensed Consolidating Guarantor and Non-Guarantor Financial Information - Statement of Cash Flows (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Net cash provided by (used in) operations	$ 46	$ (336)	$ 100
Net change in restricted cash and cash equivalents	42	(80)	70
Net sales of marketable securities	446	225	(364)
Capital expenditures and purchase of equipment leased to others	(198)	(277)	(599)
Other investing activities	26	57	83
Net cash provided by (used in) investing activities	316	(75)	(810)
Net borrowings (repayments) of debt	115	150	116
Other financing activities	(17)	29	277
Net cash provided by financing activities	98	179	393
Effect of exchange rate changes on cash and cash equivalents	(45)	(26)	(15)
Increase (decrease) in cash and cash equivalents	415	(258)	(332)
Cash and cash equivalents at beginning of the year	497	755	1,087
Cash and cash equivalents at end of the year	912	497	755
Parent Company [Member]
Net cash provided by (used in) operations	87	(285)	(669)
Net change in restricted cash and cash equivalents	3	5	0
Net sales of marketable securities	266	203	(267)
Capital expenditures and purchase of equipment leased to others	0	0	0
Other investing activities	0	0	0
Net cash provided by (used in) investing activities	269	208	(267)
Net borrowings (repayments) of debt	(2)	(176)	540
Other financing activities	1	18	30
Net cash provided by financing activities	(1)	(158)	570
Effect of exchange rate changes on cash and cash equivalents	0	0	0
Increase (decrease) in cash and cash equivalents	355	(235)	(366)
Cash and cash equivalents at beginning of the year	101	336	702
Cash and cash equivalents at end of the year	456	101	336
Guarantor Subsidiaries [Member]
Net cash provided by (used in) operations	184	(1,287)	(355)
Net change in restricted cash and cash equivalents	(4)	(1)	5
Net sales of marketable securities	0	0	0
Capital expenditures and purchase of equipment leased to others	(82)	(114)	(422)
Other investing activities	3	17	87
Net cash provided by (used in) investing activities	(83)	(98)	(330)
Net borrowings (repayments) of debt	(38)	1,306	409
Other financing activities	(35)	60	293
Net cash provided by financing activities	(73)	1,366	702
Effect of exchange rate changes on cash and cash equivalents	0	0	0
Increase (decrease) in cash and cash equivalents	28	(19)	17
Cash and cash equivalents at beginning of the year	53	72	55
Cash and cash equivalents at end of the year	81	53	72
Non-Guarantor Subsidiaries [Member]
Net cash provided by (used in) operations	168	(112)	401
Net change in restricted cash and cash equivalents	43	(84)	65
Net sales of marketable securities	180	22	(97)
Capital expenditures and purchase of equipment leased to others	(116)	(163)	(177)
Other investing activities	23	40	(4)
Net cash provided by (used in) investing activities	130	(185)	(213)
Net borrowings (repayments) of debt	(113)	409	(40)
Other financing activities	(108)	(90)	(116)
Net cash provided by financing activities	(221)	319	(156)
Effect of exchange rate changes on cash and cash equivalents	(45)	(26)	(15)
Increase (decrease) in cash and cash equivalents	32	(4)	17
Cash and cash equivalents at beginning of the year	343	347	330
Cash and cash equivalents at end of the year	375	343	347
Consolidation, Eliminations [Member]
Net cash provided by (used in) operations	(393)	1,348	723
Net change in restricted cash and cash equivalents	0	0	0
Net sales of marketable securities	0	0	0
Capital expenditures and purchase of equipment leased to others	0	0	0
Other investing activities	0	0	0
Net cash provided by (used in) investing activities	0	0	0
Net borrowings (repayments) of debt	268	(1,389)	(793)
Other financing activities	125	41	70
Net cash provided by financing activities	393	(1,348)	(723)
Effect of exchange rate changes on cash and cash equivalents	0	0	0
Increase (decrease) in cash and cash equivalents	0	0	0
Cash and cash equivalents at beginning of the year	0	0	0
Cash and cash equivalents at end of the year	$ 0	$ 0	$ 0