Commitments and Contingencies - Narrative (Details)	3 Months Ended	1 Months Ended	3 Months Ended	0 Months Ended							3 Months Ended	12 Months Ended	3 Months Ended		3 Months Ended						3 Months Ended
	Jan. 31, 2015 USD ($) site	Mar. 31, 2014 Sao Paulo Groundwater Notice [Member] Sanctions [Member] BRL	Jan. 31, 2015 Sao Paulo Groundwater Notice [Member] Sanctions [Member] USD ($)	Jan. 31, 2015 International Chamber of Commerce [Member] Penalties and Interest [Member] USD ($)	Jan. 31, 2015 International Chamber of Commerce [Member] Penalties and Interest [Member] BRL	Jan. 31, 2015 Navitrucks [Member] Alleged Unfulfilled Promises and Injury to Reputation [Member] USD ($)	Jan. 31, 2015 Navitrucks [Member] Alleged Unfulfilled Promises and Injury to Reputation [Member] BRL	Oct. 31, 2014 Navitrucks [Member] Alleged Unfulfilled Promises and Injury to Reputation [Member] USD ($)	Oct. 31, 2014 Navitrucks [Member] Alleged Unfulfilled Promises and Injury to Reputation [Member] BRL	Jan. 31, 2015 Damages from Product Defects [Member] engine	Apr. 30, 2013 California Air Resources Board (CARB) [Member] USD ($)	Oct. 31, 2014 California Air Resources Board (CARB) [Member] USD ($)	Jan. 31, 2015 G E Operating Agreement [Member] USD ($)	Oct. 31, 2014 G E Operating Agreement [Member] USD ($)	Jan. 31, 2015 Minimum [Member]	Jan. 31, 2015 Maximum [Member]	Jan. 31, 2015 G E Operating Agreement [Member] USD ($)	Jan. 31, 2015 Manufacturing Operations [Member] Financed lease obligations [Member] USD ($)	Oct. 31, 2014 Manufacturing Operations [Member] Financed lease obligations [Member] USD ($)	Jan. 31, 2015 Manufacturing Operations [Member] G E Operating Agreement [Member] Financed lease obligations [Member] USD ($)	Jan. 31, 2015 Pending Litigation [Member] Disputes [Member] USD ($)	Jan. 31, 2015 Pending Litigation [Member] FATMA Notice, Trial [Member] Penalties [Member] USD ($)	Jan. 31, 2015 Pending Litigation [Member] FATMA Notice, Trial [Member] Penalties [Member] BRL
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
Off Balance Sheet Finance Receivables Related Originations													2,200,000,000	2,300,000,000
Equipment leased to others																	139,000,000
Long-term Debt																		160,000,000	184,000,000	158,000,000
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	88,000,000
Line of Credit Facility, Current Borrowing Capacity	11,000,000
Line of Credit Facility, Remaining Borrowing Capacity	7,000,000
Purchase commitments	154,000,000
Long Term Purchase Commitment Cancellation Fees	39,000,000
Number of Contaminated Sites	2
Number of Contaminated Sites in Sao Paulo, Brazil	2
Accrual for environmental loss contingencies	22,000,000
Damages sought, value		3,000,000	1,100,000	24,000,000	64,000,000	48,000,000	128,000,000	66,000,000	178,000,000												50,000,000	1,000,000	2,000,000
Notice of Violation, number										7,600
Regulatory Penalty											$ 2,500,000	$ 300,000