Condensed Consolidated Statements of Operations (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenues:
Net investment income	$ 344.7	$ 336.7	$ 1,008.6	$ 1,060.4
Fee income	167.0	152.5	478.8	468.3
Premiums	6.1	10.7	29.6	27.1
Broker-dealer commission revenue	54.8	51.8	167.0	167.1
Net realized capital gains (loss):
Total other-than-temporary impairment losses	(4.7)	(44.0)	(8.7)	(84.3)
Less: portion of other-than-temporary impairment losses recognized in Other comprehensive income (loss)	(0.1)	(4.3)	(1.1)	(6.6)
Net other-than-temporary impairments recognized in earnings	(4.6)	(39.7)	(7.6)	(77.7)
Other net realized capital gains (losses)	(21.1)	(125.8)	108.0	(52.3)
Total net realized capital gains (losses)	(25.7)	(165.5)	100.4	(130.0)
Other income	1.0	1.2	3.8	14.1
Total revenues	547.9	387.4	1,788.2	1,607.0
Benefits and expenses:
Interest credited and other benefits to contract owners	189.3	191.8	577.0	551.1
Operating expenses	163.0	175.3	520.6	505.6
Broker-dealer commission expense	54.8	51.8	167.0	167.1
Net amortization of deferred policy acquisition costs and value of business acquired	13.5	2.0	118.5	84.3
Interest expense	0.6	0.6	1.7	1.9
Total benefits and expenses	421.2	421.5	1,384.8	1,310.0
Income (loss) before income taxes	126.7	(34.1)	403.4	297.0
Income tax expense (benefit)	33.4	(110.9)	128.2	16.2
Net income (loss)	$ 93.3	$ 76.8	$ 275.2	$ 280.8