Financial Derivatives (Referenced/Underlying Assets of Credit Default Swaps) (Details) - Credit Default Swap, Buying Protection [Member]	Jun. 30, 2015	Dec. 31, 2014
Corporation Debt [Member]
Credit Derivatives [Line Items]
Credit Default Swaps Underlying Asset Liability Allocation	51.00%	45.00%
Commercial Mortgage Backed Securities [Member]
Credit Derivatives [Line Items]
Credit Default Swaps Underlying Asset Liability Allocation	49.00%	55.00%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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