Income Taxes (Tables)

12 Months Ended

Dec. 31, 2013

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit)

Income tax expense (benefit) consisted of the following for the periods indicated.

	Year Ended December 31,
	2013		2012			2011
Current tax expense (benefit):
Federal	$	144.6	$	200.9		$	60.3
Total current tax expense (benefit)	144.6		200.9			60.3
Deferred tax expense (benefit):
Federal	62.4		(9.7		)	(65.3		)
Total deferred tax expense (benefit)	62.4		(9.7		)	(65.3		)
Total income tax expense (benefit)	$	207.0	$	191.2		$	(5.0	)

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:

	Year Ended December 31,
	2013			2012			2011
Income (loss) before income taxes	$	490.5		$	516.6		$	315.3
Tax rate	35.0		%	35.0		%	35.0		%
Income tax expense (benefit) at federal statutory rate	171.7			180.8			110.4
Tax effect of:
Dividends received deduction	(26.6		)	(18.6		)	(37.0		)
Valuation allowance	67.6			—			(87.0		)
Audit settlements	(0.3		)	(0.3		)	3.7
Prior year tax	—			28.1			—
Other	(5.4		)	1.2			4.9
Income tax expense (benefit)	$	207.0		$	191.2		$	(5.0	)

Schedule of Deferred Tax Assets and Liabilities

The tax effects of temporary differences that give rise to deferred tax assets and deferred tax liabilities as of the dates indicated, are presented below.

	December 31,
	2013			2012
Deferred tax assets
Insurance reserves	$	166.7		$	255.4
Investments	231.8			87.5
Postemployment benefits	67.3			50.6
Compensation and benefits	35.8			44.4
Other assets	—			24.5
Total gross assets before valuation allowance	501.6			462.4
Less: Valuation allowance	11.1			11.1
Assets, net of valuation allowance	490.5			451.3
Deferred tax liabilities
Net unrealized investment (gains) losses	(310.5		)	(482.4		)
Deferred policy acquisition costs	(124.1		)	(143.8		)
Value of business acquired	(243.8		)	(332.2		)
Other liabilities	(2.2		)	—
Total gross liabilities	(680.6		)	(958.4		)
Net deferred income tax asset (liability)	$	(190.1	)	$	(507.1	)

Schedule of Unrecognized Tax Benefits Roll Forward

	Year Ended December 31,
	2013		2012		2011
Balance at beginning of period	$	—	$	—	$	23.0
Additions for tax positions related to prior years	—		—		4.5
Reductions for tax positions related to prior years	—		—		(4.5		)
Reductions for settlements with taxing authorities	—		—		(23.0		)
Balance at end of period	$	—	$	—	$	—