Segment Reporting - Schedule of Revenues from External Customers and Long-Lived Assets (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2012	Oct. 31, 2011	Jul. 31, 2011	Apr. 30, 2011	Jan. 31, 2011	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales and revenues, net	$ 3,279	$ 3,319	$ 3,298	$ 3,052	$ 4,323	$ 3,537	$ 3,355	$ 2,743	$ 12,948	$ 13,958	$ 12,145
UNITED STATES [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales and revenues, net									9,075	9,646	8,847
Long-Lived Assets	1,519				1,340				1,519	1,340
CANADA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales and revenues, net									949	1,071	1,006
Long-Lived Assets	28				83				28	83
MEXICO [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales and revenues, net									728	1,002	490
Long-Lived Assets	94				152				94	152
BRAZIL [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales and revenues, net									1,066	1,190	961
Long-Lived Assets	445				519				445	519
Other Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales and revenues, net									1,130	1,049	841
Long-Lived Assets	$ 25				$ 29				$ 25	$ 29