Fair Value (Schedule Of Key Model Inputs And Assumptions Used To Fair Value Certain Asset-Backed Securities) (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Trust Preferred - Predominantly Insurance [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Asset-backed securities, Prepayment rate	5.00%	4.50%
Trust Preferred Real Estate Investment Trusts [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Asset-backed securities, Prepayment rate	0.00%	0.00%
Asset-Backed Securities [Member] | Trust Preferred - Predominantly Insurance [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Asset-backed securities, Loss severity	100.00%	100.00%
Minimum [Member] | Asset-Backed Securities [Member] | Trust Preferred Securities - Real Estate Investment Trusts [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Asset-backed securities, Loss severity	60.00%	60.00%
Maximum [Member] | Asset-Backed Securities [Member] | Trust Preferred Securities - Real Estate Investment Trusts [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Asset-backed securities, Loss severity	100.00%	100.00%
Constant Default Rate Year 1 [Member] | Minimum [Member] | Trust Preferred - Predominantly Insurance [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Asset-backed securities, Constant default rate	0.38%	0.30%
Constant Default Rate Year 1 [Member] | Minimum [Member] | Trust Preferred Real Estate Investment Trusts [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Asset-backed securities, Constant default rate	4.10%	5.10%
Constant Default Rate Year 1 [Member] | Maximum [Member] | Trust Preferred - Predominantly Insurance [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Asset-backed securities, Constant default rate	1.03%	0.32%
Constant Default Rate Year 1 [Member] | Maximum [Member] | Trust Preferred Real Estate Investment Trusts [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Asset-backed securities, Constant default rate	10.60%	8.60%
Constant Default Rate Year 2 to 3 [Member] | Minimum [Member] | Trust Preferred Real Estate Investment Trusts [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Asset-backed securities, Constant default rate	4.60%	4.20%
Constant Default Rate Year 2 to 3 [Member] | Maximum [Member] | Trust Preferred Real Estate Investment Trusts [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Asset-backed securities, Constant default rate	5.50%	7.10%
Constant Default Rate Year 2 to 5 [Member] | Minimum [Member] | Trust Preferred - Predominantly Insurance [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Asset-backed securities, Constant default rate	0.53%	0.47%
Constant Default Rate Year 2 to 5 [Member] | Maximum [Member] | Trust Preferred - Predominantly Insurance [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Asset-backed securities, Constant default rate	0.89%	0.50%
Constant Default Rate Year 4 to 6 [Member] | Trust Preferred Real Estate Investment Trusts [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Asset-backed securities, Constant default rate	1.00%	1.00%
Constant Default Rate Year 6 to Maturity [Member] | Minimum [Member] | Trust Preferred - Predominantly Insurance [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Asset-backed securities, Constant default rate	0.50%	0.50%
Constant Default Rate Year 6 to Maturity [Member] | Maximum [Member] | Trust Preferred - Predominantly Insurance [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Asset-backed securities, Constant default rate	0.55%	0.54%