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Fair Value Measurements - Schedule of Residual Interests Securitized Receivables and Derivatives Carried at Fair Value (Parenthetical) (Detail) (USD $)
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Sep. 30, 2014
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Dec. 31, 2013
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Allowance for loan losses on financing receivables | $ 11,000,000 | $ 11,000,000 |
| Amortized costs | 42,100,000 | |
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Financing Receivable [Member]
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Net fair value collateral impaired loan | 800,000 | 800,000 |
| Allowance for loan losses on financing receivables | $ 11,000,000 | $ 11,000,000 |
| X | ||||||||||
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- Definition
Fair Value Collateral Impaired Loan Net No definition available.
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| X | ||||||||||
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- Definition
This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
A valuation allowance for financing receivables that are expected to be uncollectible. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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