CONSOLIDATED STATEMENT CASH FLOWS (EFFECTS OF REINSURANCE) (Details) - USD ($) $ in Millions	Jul. 01, 2014	Sep. 30, 2016
Ceded Credit Risk [Line Items]
Reinsurance recapture, gross		$ (75.4)
Bankers Life [Member] | Wilton Reassurance Company [Member]
Ceded Credit Risk [Line Items]
Gain on reinsurance transaction (classified as Loss on sale of subsidiary, (gain) loss on reinsurance transactions and transition expenses)	$ 26.1
Income tax expense	9.2
Gain on reinsurance transaction (net of income taxes)	16.9
Bankers Life [Member] | Wilton Reassurance Company [Member] | Investments [Member]
Ceded Credit Risk [Line Items]
Reinsurance recapture, gross	139.4
Bankers Life [Member] | Wilton Reassurance Company [Member] | Cash [Member]
Ceded Credit Risk [Line Items]
Reinsurance recapture, gross	7.7
Bankers Life [Member] | Wilton Reassurance Company [Member] | Present value of future profits and deferred acquisition costs [Member]
Ceded Credit Risk [Line Items]
Reinsurance recapture, gross	29.0
Bankers Life [Member] | Wilton Reassurance Company [Member] | Reinsurance receivables [Member]
Ceded Credit Risk [Line Items]
Reinsurance recapture, gross	(155.9)
Bankers Life [Member] | Wilton Reassurance Company [Member] | Other liabilities [Member]
Ceded Credit Risk [Line Items]
Reinsurance recapture, gross	5.9
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Ceded Credit Risk [Line Items]
Gain on reinsurance transaction (net of income taxes)	16.9
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Bankers Life [Member] | Wilton Reassurance Company [Member]
Ceded Credit Risk [Line Items]
Reinsurance recapture fee paid	$ 28.0