Derivative Financial Instruments (Tables)

3 Months Ended

Sep. 30, 2012

Derivative Financial Instruments [Abstract]

Fair Value of the Company's Derivative Assets and Liabilities

			September 30,		December 31,
Derivatives Not Designated as Hedging Instruments			2012		2011
			(In millions)
Assets:
	Fixed maturity securities:
		S&P 500 Index options	$	13.8	$	7.2
Liabilities:
	Other policyholder funds:
		Index-based interest guarantees	$	58.6	$	49.5

Gain or Loss Recognized in Earnings from the Change in Fair Value of Derivative Assets and Liabilities

			Three Months Ended				Nine Months Ended
			September 30,				September 30,
Derivatives Not Designated as Hedging Instruments			2012		2011		2012		2011
			(In millions)
Net investment income:
	S&P 500 Index options		$	2.9	$	(6.8)	$	7.3	$	(3.0)
Interest credited:
	Index-based interest guarantees			(2.5)		3.8		(7.2)		1.7
		Net gain (loss)	$	0.4	$	(3.0)	$	0.1	$	(1.3)

Fair Value of Derivative Assets and Maximum Credit Risk Exposure

			September 30, 2012
			Assets at		Maximum
			Fair Value		Credit Risk
			(In millions)
Counterparty:
	The Bank of New York Mellon		$	12.9	$	17.8
	Goldman Sachs			0.9		1.5
		Total	$	13.8	$	19.3