ACCOUNTING FOR DERIVATIVES (DETAILS) (USD $) In Millions			9 Months Ended
	Sep. 30, 2011 Equity Swap [Member]	Dec. 31, 2010 Equity Swap [Member]	Sep. 30, 2011 Equity Swap [Member] Investment Income [Member]	Sep. 30, 2010 Equity Swap [Member] Investment Income [Member]	Sep. 30, 2011 Embedded Derivative Financial Instruments [Member]	Dec. 31, 2010 Embedded Derivative Financial Instruments [Member]	Sep. 30, 2011 Embedded Derivative Associated With Modified Coinsurance Agreement [Member]	Dec. 31, 2010 Embedded Derivative Associated With Modified Coinsurance Agreement [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Income, Net			$ (25.7)	$ (9.7)
Other Derivatives Not Designated as Hedging Instruments Assets at Fair Value	30.1	89.4
Other Derivatives Not Designated as Hedging Instruments Liabilities at Fair Value					$ 638.6	$ 553.6	$ 3.3	$ (0.4)