Statements of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011 As restated and amended [Member]	Dec. 31, 2010 As restated and amended [Member]
OPERATING ACTIVITIES:
Net loss	$ (137.7)	$ (20.0)	$ (63.6)
Net realized investment losses	22.3	19.4	22.4
Policy acquisition costs deferred	(69.2)	(100.7)	(10.1)
Amortization of policy acquisition costs deferred	103.5	109.5	198.0
Interest credited	69.5	60.9	63.5
Equity in earnings of limited partnerships and other investments	(0.1)	(0.2)	(0.3)
Change in:
Accrued investment income	(8.5)	(12.2)	(5.0)
Deferred income taxes	(13.4)	(6.9)	(10.4)
Receivables	(29.6)	(10.9)	17.7
Policy liabilities and accruals	(56.4)	(128.3)	(307.3)
Due to/from affiliate	(7.5)	21.1	16.8
Other operating activities, net	(38.3)	(54.0)	(57.8)
Cash used for operating activities	(165.4)	(122.3)	(136.2)
Purchases of:
Available-for-sale debt securities	(1,427.5)	(1,459.2)	(756.3)
Derivative instruments	(98.1)	(46.1)	(65.4)
Fair value investments	(5.7)	(34.3)	(3.1)
Sales, repayments and maturities of:
Available-for-sale debt securities	863.9	538.4	586.8
Derivative instruments	26.7	63.8	22.3
Fair value investments	12.4	7.7	2.4
Contributions to limited partnerships	(2.1)	(1.2)	(2.0)
Distribution from limited partnerships	0.3	0.1	0.1
Policy loans, net	3.9	(2.9)	(5.8)
Other investing activities, net	(1.0)	(0.6)	(6.9)
Cash used for investing activities	(627.2)	(934.3)	(227.9)
FINANCING ACTIVITIES:
Policyholder deposit fund deposits	1,074.7	1,225.4	490.4
Policyholder deposit fund withdrawals	(513.8)	(465.0)	(474.1)
Net transfers from separate accounts	265.3	311.6	284.2
Capital contributions from parent			14.0
Cash provided by financing activities	826.2	1,072.0	314.5
Change in cash and cash equivalents	33.6	15.4	(49.6)
Cash and cash equivalents, beginning of year	49.5	34.1	83.7
Cash and cash equivalents, end of year	83.1	49.5	34.1
Non-Cash Transactions During the Year
Investment exchanges	$ 28.6	$ 26.4	$ 15.0