4. Reinsurance (Details) (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]
Direct Business and Reinsurance:
Direct premiums	$ 79.2	$ 77.1	$ 82.8
Premiums ceded to non-affiliate reinsurers(1)	(70.7)	(74.8)	(79.0)
Premiums	8.5	2.3	3.8
Direct policy benefits incurred	281.4	161.4	236.0
Policy benefits assumed from non-affiliate reinsureds	1.0	3.8	3.8
Policy benefits ceded to Affiliate reinsurers	(13.7)	(5.3)	(14.1)
Policy benefits ceded to Non-affiliate reinsurers	(114.7)	(86.0)	(144.1)
Policy benefits ceded to reinsurers	(128.4)	(91.3)	(158.2)
Premiums paid to: Affiliate reinsurers	20.1	19.7	11.5
Premiums paid to: Non-affiliate reinsurers	60.8	58.7	48.4
Premiums paid to reinsurers(2)	80.9	78.4	59.9
Policy benefits(3)	234.9	152.3	141.5
Direct life insurance in force	(62,701.8)	(68,205.1)	(73,616.8)
Life insurance in force assumed from reinsureds	(78.5)	(66.1)	(71.6)
Life insurance in-force ceded to: Affiliate reinsurers	(1,859.3)	(2,520.7)	(3,009.5)
Life insurance in-force ceded to: Non-affiliate reinsurers	(46,950.4)	(49,800.1)	(53,239.4)
Life insurance in force ceded to reinsurers	(48,809.7)	(52,320.8)	(56,248.9)
Life insurance in force	$ 13,970.6	$ 15,950.4	$ 17,439.5
Percentage of amount assumed to net insurance in force	0.60%	0.40%	0.40%