Condensed Consolidated Statements of Operations (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues:
Net investment income	$ 1,367.0	$ 1,348.8	$ 1,420.9
Fee income	744.3	648.8	614.0
Net premiums	37.3	36.0	33.9
Broker-dealer commission revenue	242.1	225.5	218.3
Net realized capital gains (losses):
Total other-than-temporary impairments	(9.4)	(14.1)	(116.8)
Less: Portion of other-than-temporary impairment losses recognized in Other comprehensive income (loss)	(3.5)	(3.2)	(9.5)
Net other-than-temporary impairments recognized in earnings	(5.9)	(10.9)	(107.3)
Other net realized capital gains (losses)	(136.3)	70.2	(108.5)
Total net realized capital gains (losses)	(142.2)	59.3	(215.8)
Other revenue	(1.8)	0	14.5
Total revenues	2,246.7	2,318.4	2,085.8
Benefits and expenses:
Interest credited and other benefits to contract owners/policyholders	747.1	746.7	763.4
Operating expenses	707.7	696.5	692.0
Broker-dealer commission expense	242.1	225.5	218.3
Net amortization of deferred policy acquisition costs and value of business acquired	58.3	131.1	94.2
Interest expense	1.0	2.0	2.6
Total benefits and expenses	1,756.2	1,801.8	1,770.5
Income (loss) before income taxes	490.5	516.6	315.3
Income tax expense (benefit)	207.0	191.2	(5.0)
Net income (loss)	$ 283.5	$ 325.4	$ 320.3