Commitments and Contingencies - Narrative (Details)	3 Months Ended	12 Months Ended		1 Months Ended	3 Months Ended	12 Months Ended			3 Months Ended	12 Months Ended	0 Months Ended	1 Months Ended		3 Months Ended		12 Months Ended					3 Months Ended				12 Months Ended
	Jan. 31, 2013 USD ($)	Oct. 31, 2014 USD ($) site	Oct. 31, 2013 USD ($)	Mar. 31, 2014 Sao Paulo Groundwater Notice [Member] Sanctions [Member] BRL	Oct. 31, 2014 Sao Paulo Groundwater Notice [Member] Sanctions [Member] USD ($)	Oct. 31, 2014 Non-conformance Penalties [Member] USD ($)	Oct. 31, 2013 Non-conformance Penalties [Member] USD ($)	Oct. 31, 2014 Pending Litigation [Member] Disputes [Member] USD ($)	Oct. 31, 2014 Pending Litigation [Member] FATMA Notice, Trial [Member] Penalties [Member] USD ($)	Oct. 31, 2014 Pending Litigation [Member] FATMA Notice, Trial [Member] Penalties [Member] BRL	Oct. 25, 2011 Pending Litigation [Member] Lis Franco vs. Syntex and MWM, Trial [Member] BRL	May 31, 2013 Pending Litigation [Member] Lis Franco vs. Syntex and MWM, Trial [Member] BRL	Dec. 31, 2012 Pending Litigation [Member] Lis Franco vs. Syntex and MWM, Trial [Member] BRL	Oct. 31, 2014 Pending Litigation [Member] Lis Franco vs. Syntex and MWM, Trial [Member] BRL	Apr. 30, 2014 Pending Litigation [Member] Lis Franco vs. Syntex and MWM, Trial [Member] BRL	Oct. 31, 2014 Pending Litigation [Member] Lis Franco vs. Syntex and MWM, Trial [Member] USD ($)	Dec. 31, 1999 Pending Litigation [Member] Lis Franco vs. Syntex and MWM, Trial [Member] Royalties [Member] BRL	May 30, 2010 Pending Litigation [Member] Lis Franco vs. Syntex and MWM, Trial [Member] Royalties [Member] BRL	Dec. 31, 2009 Pending Litigation [Member] Lis Franco vs. Syntex and MWM, Trial [Member] Royalties [Member] BRL	Oct. 31, 2014 Damages from Product Defects [Member] engine	Apr. 30, 2013 California Air Resources Board (CARB) [Member] USD ($)	Apr. 30, 2014 G E Operating Agreement [Member]	Oct. 31, 2014 G E Operating Agreement [Member] USD ($)	Oct. 31, 2013 G E Operating Agreement [Member] USD ($)	Oct. 31, 2014 Minimum [Member]	Oct. 31, 2014 Maximum [Member]	Oct. 31, 2014 G E Operating Agreement [Member] USD ($)	Oct. 31, 2014 Manufacturing Operations [Member] USD ($)	Oct. 31, 2014 Manufacturing Operations [Member] Financed lease obligations [Member] USD ($)	Oct. 31, 2013 Manufacturing Operations [Member] Financed lease obligations [Member] USD ($)	Oct. 31, 2014 Manufacturing Operations [Member] G E Operating Agreement [Member] Financed lease obligations [Member] USD ($)	Oct. 31, 2012 Manufacturing Operations [Member] G E Operating Agreement [Member] Financed lease obligations [Member] USD ($)
Loss Contingencies [Line Items]
Operating Agreement Excess Loss Percentage																						10.00%
Loss Sharing Agreement, Percentage																						9.50%
Off Balance Sheet Finance Receivables																							$ 1,500,000,000	$ 1,400,000,000
Off Balance Sheet Finance Receivables Related Originations																							2,300,000,000	2,000,000,000
Equipment leased to others		677,000,000	663,000,000																								156,000,000
Long-term Debt		5,224,000,000																										2,958,000,000	184,000,000	218,000,000	181,000,000	167,000,000
Historical losses on finance receivables, measured as percentage of average balance of related finance receivable																									0.30%	2.10%
Available stand-by letters of credit and surety bonds		90,000,000
Line of Credit Facility, Current Borrowing Capacity		13,000,000
Line of Credit Facility, Remaining Borrowing Capacity		9,000,000
Purchase commitments		154,000,000
Long Term Purchase Commitment Cancellation Fees		41,000,000
Number of Contaminated Sites		2
Number of Contaminated Sites in Sao Paulo, Brazil		2
Accrual for environmental loss contingencies		21,000,000
Damages sought, value				3,000,000	1,200,000			50,000,000	1,000,000	2,000,000	10,850,000	25,000,000	22,000,000			3,500,000	42,000,000
Loss Contingency, Loss in Period														8,500,000	20,000,000	8,200,000
Estimate of possible loss																	16,000,000	74,000,000	70,000,000
Proceeds from Legal Settlements	35,000,000
Notice of Violation, number																				7,600
Regulatory Penalty						$ 2,000,000	$ 36,000,000														$ 2,500,000