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Fair Value of Financial Investments (Details 3) (USD $) In Millions, unless otherwise specified | Jun. 30, 2012
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Non-Recurring Fair Value Measurements |
Fair value on a non-recurring basis of financial investments | $ 2
Private Equity Funds [Member] |
Non-Recurring Fair Value Measurements |
Fair value on a non-recurring basis of financial investments | 2
Quoted Market Prices (Level 1) [Member] |
Non-Recurring Fair Value Measurements |
Fair value on a non-recurring basis of financial investments |
Quoted Market Prices (Level 1) [Member] | Private Equity Funds [Member] |
Non-Recurring Fair Value Measurements |
Fair value on a non-recurring basis of financial investments |
Significant Other Observable Inputs (Level 2) [Member] |
Non-Recurring Fair Value Measurements |
Fair value on a non-recurring basis of financial investments |
Significant Other Observable Inputs (Level 2) [Member] | Private Equity Funds [Member] |
Non-Recurring Fair Value Measurements |
Fair value on a non-recurring basis of financial investments |
Significant Unobservable Inputs (Level 3) [Member] |
Non-Recurring Fair Value Measurements |
Fair value on a non-recurring basis of financial investments | 2
Significant Unobservable Inputs (Level 3) [Member] | Private Equity Funds [Member] |
Non-Recurring Fair Value Measurements |
Fair value on a non-recurring basis of financial investments | 2
Gains (Losses) [Member] |
Non-Recurring Fair Value Measurements |
Fair value on a non-recurring basis of financial investments | (2)
Gains (Losses) [Member] | Private Equity Funds [Member] |
Non-Recurring Fair Value Measurements |
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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Data Type: | xbrli:stringItemType
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