Financial Instruments and Commodity Contracts - Foreign Currency Contracts (Details) - Foreign Exchange Contract [Member] € in Millions, CAD in Millions		Jul. 31, 2015 EUR (€)	Jul. 31, 2015 CAD	Oct. 31, 2014 EUR (€)
Euro Member Countries, Euro | Maturing Aug 2015 - Oct 2015 [Member]
Derivative [Line Items]
Derivative, Notional Amount Expiring Monthly		€ 4
Derivative, Notional Amount	[1]	€ 12
Euro Member Countries, Euro | Maturing Nov 2014 [Member]
Derivative [Line Items]
Derivative, Notional Amount				€ 4
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 Aug 2015 - Oct 2015 [Member]
Derivative [Line Items]
Derivative, Notional Amount Expiring Monthly | CAD			CAD 25
Derivative, Notional Amount | CAD	[3]		100
Mexican Pesos | Maturing August 2015 [Member]
Derivative [Line Items]
Derivative, Notional Amount | CAD	[3]		CAD 813

[1] Forward exchange contracts of €4 million mature each month from August 2015 through October 2015.

[2] Forward exchange contracts of €1 million mature on the last day of each month from February 2015 through October 2015.

[3] Forward exchange contracts of C$25 million settle each month from August 2015 through November 2015.