Insurance Expenses (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Insurance Expenses [Abstract]
Commissions									$ 357.6	$ 324.6	$ 345.7
General Expenses									241.1	258.1	257.1
Taxes, Licenses and Fees									44.2	38.9	42.8
Total Costs Incurred									642.9	621.6	645.6
Policy Acquisition Costs:
Deferred									(270.6)	(235.8)	(253.4)
Amortized									257.4	235.4	253.9
Net Policy Acquisition Costs Amortized (Deferred)									(13.2)	(0.4)	0.5
Life VIF, P & C VIF and P&C Customer Relationships Amortized									15.4	7.2	8.3
Insurance Expenses	$ 177.0	$ 161.1	$ 162.1	$ 144.9	$ 156.4	$ 158.6	$ 161.3	$ 152.1	$ 645.1	$ 628.4	$ 654.4