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Counterparty Risk (% Of Total Collateral On Reverse Repurchase Agreements) (Details)
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Sep. 30, 2012
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|---|---|
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J.P. Morgan Securities Inc. [Member]
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|
| Financial Highlights [Line Items] | |
| % of Total Collateral on Reverse Repurchase Agreements | 19.00% |
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Royal Bank Of Canada [Member]
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|
| Financial Highlights [Line Items] | |
| % of Total Collateral on Reverse Repurchase Agreements | 19.00% |
|
Deutsche Bank [Member]
|
|
| Financial Highlights [Line Items] | |
| % of Total Collateral on Reverse Repurchase Agreements | 16.00% |