Fair Value (Details - Level 3 narrative items) (USD $) In Millions, unless otherwise specified			12 Months Ended
	Dec. 31, 2012 [FundsHeldDirectlyManagedMember]	Dec. 31, 2011 [FundsHeldDirectlyManagedMember]	Dec. 31, 2011 [TradingSecuritiesMember] [FixedMaturitiesMember]	Dec. 31, 2012 [TradingSecuritiesMember] [EquitySecuritiesMember]	Dec. 31, 2011 [TradingSecuritiesMember] [EquitySecuritiesMember]	Dec. 31, 2012 [TradingSecuritiesMember] [OtherInvestedAssetsMember]	Dec. 31, 2011 [TradingSecuritiesMember] [OtherInvestedAssetsMember]
Fair Value - Other Details [Line Items]
Aggregate carrying amount of other invested assets not carried at fair value						$ 262.2	$ 267.6
Transfers out of Level 3				6.8
Transfers into Level 3			40.2
Cash and cash equivalents	53.7	176.3
Accrued investment income	10.2	13.7
Other net assets	33.6	20.4
Fair Value Assets Level 2 To Level 1 Transfers Amount				$ 1.1	$ 0