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Non-Recurring Fair Value Measurements (Detail) (Non-Recurring investments, USD $) In Millions, unless otherwise specified | Sep. 30, 2012
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Fair value on a non-recurring basis of financial investments | $ 2
Private equity funds |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Fair value on a non-recurring basis of financial investments | 2
Significant Unobservable Inputs (Level 3) |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Fair value on a non-recurring basis of financial investments | 2
Significant Unobservable Inputs (Level 3) | Private equity funds |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Fair value on a non-recurring basis of financial investments | 2
Gains (Losses) |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Fair value on a non-recurring basis of financial investments | (2)
Gains (Losses) | Private equity funds |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Fair value on a non-recurring basis of financial investments | $ (2)

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- Definition Fair Value Measured on nonrecurring basis investments. + References No definition available. + Details
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- Details
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