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Separate Accounts (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Guaranteed Minimum Death Benefit [Member]
Separate accounts disclosure (Textual) [Abstract]
Reserve held for the variable annuity	$ 0.1	$ 0.2
Guaranteed Minimum Withdrawal Benefit [Member]
Separate accounts disclosure (Textual) [Abstract]
Value of variable annuity separate accounts	91.6	86.6
Separate accounts guarantee liability	$ 0.3	$ (0.2)

Estimated value of the separate accounts as of the date benefit payments are to commence.

Value of the separate accounts assuming death of the insured, corresponding to the specified product, guarantee type and subset of the guarantee.