XML 57 R59.htm IDEA: XBRL DOCUMENT v2.4.1.9
Fair Value Measurements - Carrying Values and Estimated Fair Values of Financial Instruments (Details) (USD $)
In Millions, unless otherwise specified
Apr. 30, 2015
Oct. 31, 2014
Reported Value Measurement [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Retail Notes $ 208us-gaap_LoansReceivableFairValueDisclosure
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Estimate of Fair Value Measurement [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
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Secured Debt [Member] | Financial Services Operations [Member] | Reported Value Measurement [Member]    
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Secured Debt [Member] | Financial Services Operations [Member] | Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value Measurement [Member]    
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
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[1] The carrying value represents the consolidated financial statement amount of the debt which excludes the allocation of the conversion feature to equity, while the fair value is based on internally developed valuation techniques such as discounted cash flow modeling for Level 3 convertible notes which include the equity feature.