Financial Instruments and Commodity Contracts - Foreign Currency Contracts (Details) - Foreign Exchange Contract [Member] € in Millions, CAD in Millions		Oct. 31, 2015 EUR (€)	Oct. 31, 2015 CAD	Oct. 31, 2014 EUR (€)
Euro Member Countries, Euro | Settling in November 2015 [Member]
Derivative [Line Items]
Derivative, Notional Amount Expiring Monthly		€ 2
Euro Member Countries, Euro | Maturing November 2015 to October 2016 [Member]
Derivative [Line Items]
Derivative, Notional Amount	[1]	30
Euro Member Countries, Euro | Maturing November 2015 [Member]
Derivative [Line Items]
Derivative, Notional Amount Expiring Monthly		3
Euro Member Countries, Euro | Maturing December 2015 [Member]
Derivative [Line Items]
Derivative, Notional Amount Expiring Monthly		3
Euro Member Countries, Euro | Maturing January 2016 [Member]
Derivative [Line Items]
Derivative, Notional Amount Expiring Monthly		4
Euro Member Countries, Euro | Maturing February 2016 through October 2016 [Member]
Derivative [Line Items]
Derivative, Notional Amount Expiring Monthly		2
Euro Member Countries, Euro | Maturing Nov 2014 [Member]
Derivative [Line Items]
Derivative, Notional Amount				€ 22
Euro Member Countries, Euro | Maturing Dec 2014 [Member]
Derivative [Line Items]
Derivative, Notional Amount				4
Euro Member Countries, Euro | Maturing Jan 2015 [Member]
Derivative [Line Items]
Derivative, Notional Amount				5
Euro Member Countries, Euro | Maturing Feb 2015 - Oct 2015 [Member]
Derivative [Line Items]
Derivative, Notional Amount Expiring Monthly				1
Derivative, Notional Amount	[2]			€ 9
Canada, Dollars | Maturing November 2015 [Member]
Derivative [Line Items]
Derivative, Notional Amount | CAD			CAD 25
Mexican Pesos | Maturing November 2015 [Member]
Derivative [Line Items]
Derivative, Notional Amount | CAD			CAD 1,270
Mexican Pesos | Maturing October 2015 [Member]
Derivative [Line Items]
Derivative, Notional Amount Expiring Monthly		€ 853

[1] Forward exchange contracts of €2 million settle in November 2015, €3 million mature in November 2015, €3 million mature in December 2015, €4 million mature in January 2016, and €2 million mature each month from February 2016 through October 2016.

[2] (B) Forward exchange contract matured in October 2015 but did not settle until November 2015.