Financial Derivatives (Referenced/Underlying Assets of Credit Default Swaps) (Details) (Credit Default Swap, Buying Protection [Member])	Sep. 30, 2014	Dec. 31, 2013
Corporation Debt [Member]
Credit Derivatives [Line Items]
Credit Default Swaps Underlying Asset Liability Allocation	45.00%	37.00%
Commercial Mortgage Backed Securities [Member]
Credit Derivatives [Line Items]
Credit Default Swaps Underlying Asset Liability Allocation	55.00%	63.00%