Income Taxes (Tables)

12 Months Ended

Dec. 31, 2017

Income Tax Disclosure [Abstract]

Schedule of Company's Current and Deferred Federal Tax Expense

Information about the Company’s current and deferred tax expense follows:

	Year Ended December 31,
	2017			2016			2015
Current (benefit) expense	$	(3.3	)	$	271.4		$	29.8
Deferred expense (benefit)	49.5			(65.2		)	11.2
Total income tax expense	$	46.2		$	206.2		$	41.0

Schedule of Reconciliation of the Federal Income Tax Rate to the Company's Effective Income Tax Rate

A reconciliation of the federal income tax rate to the Company's effective income tax rate follows:

	December 31,
	2017		2016		2015
Federal income tax rate:	35.0	%	35.0	%	35.0	%
Reconciling items:
Dividends-received deduction	(1.2	)%	(0.3	)%	(1.7	)%
TCJA net deferred tax asset revaluation	3.6	%	—	%	—	%
Capital contribution from affiliated entity impacting taxable income	—	%	3.7	%	—	%
Goodwill	—	%	1.2	%	—	%
Nondeductible health insurer fee	—	%	0.5	%	2.3	%
Change in liability for prior years' taxes	(0.5	)%	—	%	0.5	%
Other	0.1	%	(0.1	)%	(0.5	)%
Effective income tax rate	37.0	%	40.0	%	35.6	%

Schedule of Significant Deferred Tax Assets and Deferred Tax Liabilities

The tax effects of temporary differences that result in significant deferred tax assets and liabilities are as follows:

	December 31,
	2017			2016
Deferred tax assets:
Deferred gain on disposal of businesses	$	22.0		$	70.2
Deferred acquisition costs	13.3			22.8
Investments, net	5.7			17.2
Policyholder and separate account reserves	7.1			13.3
Employee and Post-Retirement Benefits	2.8			4.6
Total deferred tax assets (1)	50.9			128.1
Deferred tax liabilities:
Net unrealized appreciation on securities	(42.6		)	(57.9		)
Other	(1.4		)	(0.7		)
Total deferred tax liabilities (1)	(44.0		)	(58.6		)
Net deferred income tax assets	$	6.9		$	69.5

(1) 2017 reflects the reduction of deferred tax assets and liabilities following the enactment of TCJA.