ACCOUNTING FOR DERIVATIVES - DERIVATIVES WITH MASTER NETTING ARRANGEMENTS (Details) - Fixed index call options - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Derivative [Line Items]
Gross amounts recognized	$ 146.4	$ 26.6
Gross amounts offset in the balance sheet	0.0	0.0
Net amounts of assets presented in the balance sheet	146.4	26.6
Financial instruments	0.0	0.0
Cash collateral received	0.0	0.0
Net amount	$ 146.4	$ 26.6

Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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