4. Reinsurance (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2011 As restated and amended [Member]	Sep. 30, 2011 As restated and amended [Member]
Direct Business and Reinsurance in Continuing Operations
Direct premiums	$ 133.4	$ 411.6	$ 151.8	$ 463.6
Premiums assumed from reinsureds	1.9	6.1	2.8	7.8
Premiums ceded to reinsurers(1)	(40.5)	(127.1)	(42.7)	(147.8)
Premiums	94.8	290.6	111.9	323.6
Percentage of amount assumed to net premiums	2.00%	2.10%	2.50%	2.40%
Direct policy benefits incurred	191.9	574.1	183.0	587.3
Policy benefits assumed from reinsureds	30.0	67.9	2.0	7.8
Policy benefits ceded to reinsurers	(49.3)	(200.1)	(58.8)	(194.0)
Premiums paid to reinsurers(2)	28.1	69.5	28.5	75.4
Policy benefits(3)	$ 200.7	$ 511.4	$ 154.7	$ 476.5