Income Taxes (Tables)

9 Months Ended

Sep. 30, 2013

Income Tax Disclosure [Abstract]

Schedule of Effective Income Tax Rate Reconciliation

Income taxes were different from the amount computed by applying the federal income tax rate to income (loss) before income taxes for the following reasons for the periods indicated:

	Three Months Ended September 30,
	2013			2012
Income (loss) before income taxes	$	133.3		$	126.7
Tax rate	35.0		%	35.0		%
Income tax expense (benefit) at federal statutory rate	46.7			44.3
Tax effect of:
Dividends received deduction	(9.0		)	(1.2		)
Valuation allowance	28.6			(10.0		)
IRS audit adjustment	—			—
Other	(0.6		)	0.3
Income tax expense (benefit)	$	65.7		$	33.4

	Nine Months Ended September 30,
	2013			2012
Income (loss) before income taxes	$	353.0		$	403.4
Tax rate	35.0		%	35.0		%
Income tax expense (benefit) at federal statutory rate	123.6			141.2
Tax effect of:
Dividends received deduction	(20.6		)	(13.3		)
Valuation allowance	30.5			—
IRS audit adjustment	(0.3		)	(0.3		)
Other	0.2			0.6
Income tax expense (benefit)	$	133.4		$	128.2