Condensed Financial Information (Parent Company) (Details Textuals 4) (Parent Company [Member], MetLife Bank 18 Month Liquidity Agreement [Member], Subsequent Event [Member], USD $) In Millions, unless otherwise specified	Feb. 11, 2013	Jan. 09, 2013
Parent Company [Member] | MetLife Bank 18 Month Liquidity Agreement [Member] | Subsequent Event [Member]
Condensed Financial Statements, Captions [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 100	$ 500
Line of Credit Facility, Amount Outstanding	$ 0