CONSOLIDATED STATEMENT CASH FLOWS (SCHEDULE OF THE RECONCILIATION FOR NET INCOME PROVIDED BY OPERATING ACTIVITIES) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Additional Cash Flow Elements, Operating Activities [Abstract]
Net income	$ 234.2	$ 18.6	$ 59.9	$ 45.5	$ 137.3	$ 33.8	$ 46.8	$ 52.8	$ 358.2	$ 270.7	$ 51.4
Adjustments to reconcile net income to net cash from operating activities:
Amortization and depreciation									275.0	283.4	274.2
Income taxes									(11.7)	92.9	119.7
Insurance liabilities									332.8	297.4	398.2
Accrual and amortization of investment income									(124.2)	(27.6)	(148.3)
Deferral of policy acquisition costs									(242.7)	(246.4)	(242.8)
Net realized investment (gains) losses									(8.3)	36.6	(36.7)
Payment to reinsurer pursuant to long-term care business reinsured									0.0	0.0	(590.3)
Loss on sale of subsidiary, (gain) loss on reinsurance transactions and transition expenses									75.4	9.0	239.8
Cash and cash equivalents received upon recapture of reinsurance									73.6	0.0	0.0
Loss on extinguishment or modification of debt									0.0	32.8	0.6
Other									31.4	(4.9)	56.0
Net cash from operating activities									$ 759.5	$ 743.9	$ 121.8	[1]

[1] Cash flows from operating activities reflect outflows in 2014 due to the payment to reinsurer to transfer certain long-term care business.