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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2017

Income Tax Disclosure [Abstract]

Provision for income taxes

The (benefit) provision for income taxes consisted of the following:

	Year Ended December 31,
	2017				2016				2015
	(In millions)
Current:
Federal	$	(9	)		$	134			$	172
State	3				3				8
Foreign	—				(6		)		6
Total current	(6		)		131				186
Deferred:
Federal	(85		)		19				(10		)
State	(9		)		2				4
Foreign	—				1				(1		)
Total deferred	(94		)		22				(7		)
	$	(100	)		$	153			$	179

Effective income tax rate reconciliation to the statutory federal income tax rate

A reconciliation of the U.S. federal statutory income tax rate to the combined effective income tax rate is as follows:

	Year Ended December 31,
	2017			2016			2015
Statutory federal tax (benefit) rate	(35.0	)%		35.0	%		35.0	%
State income provision (benefit), net of federal	(0.7	)		1.6			2.4
Nondeductible health insurer fee (HIF)	—			37.0			17.0
Nondeductible compensation	2.8			3.1			0.6
Nondeductible goodwill impairment	6.6			—			—
Revaluation of net deferred tax assets	8.8			—			—
Change in purchase agreement that increased tax basis in assets	—			(2.2	)		—
Other	1.1			0.3			0.5
Effective tax (benefit) rate	(16.4	)%		74.8	%		55.5	%

Significant components of deferred tax assets and liabilities

Significant components of our deferred tax assets and liabilities as of December 31, 2017 and 2016 were as follows:

	December 31,
	2017				2016
	(In millions)
Accrued expenses	$	15			$	22
Reserve liabilities	11				28
Other accrued medical costs	16				5
Net operating losses	27				13
Fixed assets and intangibles	23				—
Unrealized losses	2				1
Unearned premiums	19				27
Lease financing obligation	30				38
Deferred compensation	1				6
Tax credit carryover	15				7
Valuation allowance	(41		)		(16		)
Total deferred income tax assets, net of valuation allowance	118				131
Prepaid expenses	(6		)		(9		)
Fixed assets and intangibles	—				(104		)
Basis in debt	(9		)		(23		)
Total deferred income tax liabilities	(15		)		(136		)
Net deferred income tax asset (liability)	$	103			$	(5	)

Unrecognized tax benefits roll forward

The roll forward of our unrecognized tax benefits is as follows:

	Year Ended December 31,
	2017				2016				2015
	(In millions)
Gross unrecognized tax benefits at beginning of period	$	(11	)		$	(9	)		$	(3	)
Increases in tax positions for current year	(1		)		(1		)		(1		)
Increases in tax positions for prior years	(4		)		(1		)		(5		)
Decreases in tax positions for prior years	3				—				—
Gross unrecognized tax benefits at end of period	$	(13	)		$	(11	)		$	(9	)

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Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
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Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

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-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
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Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months.

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