Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Cash Flows [Abstract]
Net income (loss)	$ 283.5	$ 325.4	$ 320.3
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Capitalization of deferred policy acquisition costs, value of business acquired and sales inducements	(79.5)	(88.1)	(88.9)
Net amortization of deferred policy acquisition costs, value of business acquired and sales inducements	60.1	133.1	97.7
Net accretion/amortization of discount/premium	24.4	20.7	37.0
Future policy benefits, claims reserves and interest credited	559.9	569.9	639.0
Deferred income tax expense (benefit)	62.3	9.5	(65.3)
Net realized capital (gains) losses	142.2	(59.3)	215.8
Depreciation	3.6	3.5	3.5
Change in:
Accrued investment income	(12.0)	(12.8)	(19.7)
Reinsurance recoverable	137.1	122.6	79.6
Other receivables and asset accruals	(7.3)	(44.8)	(3.5)
Due to/from affiliates	63.4	(77.8)	54.3
Other payables and accruals	(35.7)	125.0	(91.9)
Other, net	(18.5)	60.9	(64.8)
Net cash provided by operating activities	1,183.5	1,087.8	1,113.1
Proceeds from the sale, maturity, disposal or redemption of:
Fixed maturities	3,618.7	3,868.7	6,468.5
Equity securities, available-for-sale	0.7	2.4	63.1
Mortgage loans on real estate	270.9	492.2	332.8
Limited partnerships/corporations	35.1	339.4	93.0
Acquisition of:
Fixed maturities	(4,368.6)	(5,484.7)	(7,662.0)
Equity securities, available-for-sale	(9.2)	(0.7)	(5.7)
Mortgage loans on real estate	(794.2)	(991.3)	(863.1)
Limited partnerships/corporations	(20.0)	(46.1)	(68.5)
Derivatives, net	(276.6)	(36.4)	(78.6)
Policy loans, net	(1.1)	5.0	7.1
Short-term investments, net	664.9	(463.0)	5.3
Loan-Dutch State obligation, net	0	416.8	122.4
Collateral (delivered) received, net	(38.5)	57.1	105.3
Purchases of fixed assets, net	(0.2)	(0.6)	(0.8)
Net cash used in investing activities	(918.1)	(1,841.2)	(1,481.2)
Cash Flows from Financing Activities:
Deposits received for investment contracts	2,723.4	2,884.3	3,115.4
Maturities and withdrawals from investment contracts	(2,709.3)	(2,292.6)	(2,403.6)
Short-term loans to affiliates, net	0	648.0	(343.9)
Short-term repayments of repurchase agreements, net	0	0	(214.7)
Dividends paid and return of capital distribution	(264.0)	(340.0)	0
Capital contribution from parent	0	0	201.0
Net cash provided by (used in) financing activities	(249.9)	899.7	354.2
Net increase (decrease) in cash and cash equivalents	15.5	146.3	(13.9)
Cash and cash equivalents, beginning of year	363.4	217.1	231.0
Cash and cash equivalents, end of year	378.9	363.4	217.1
Supplemental cash flow information:
Income taxes paid, net	102.6	170.1	108.4
Interest paid	$ 0	$ 0	$ 0.3