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Available-for-Sale Securities Pledged as Collateral (Details) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2014
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Dec. 31, 2013
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| Available-for-sale Securities [Abstract] | ||
| Available-for-sale Securities Pledged as Collateral | $ 14,159,315us-gaap_AvailableForSaleSecuritiesPledgedAsCollateral | $ 12,295,302us-gaap_AvailableForSaleSecuritiesPledgedAsCollateral |
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- Details
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- Definition
The fair value of available-for-sale securities that serve as collateral for borrowings. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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