Segment Information (Tables)

12 Months Ended

Dec. 31, 2017

Segment Reporting [Abstract]

Reconciliation of Revenue from Segments to Consolidated

Revenues

	For the years ended December 31,
	2017		2016			2015
Earned premiums and fee income:
Commercial Lines
Workers’ compensation	$	3,287	$	3,187		$	3,065
Liability	604		585			568
Package business	1,301		1,249			1,223
Property	604		577			638
Professional liability	246		231			222
Bond	230		218			218
Automobile	630		643			617
Total Commercial Lines [1]	6,902		6,690			6,551
Personal Lines
Automobile	2,617		2,749			2,698
Homeowners	1,117		1,188			1,212
Total Personal Lines [1] [2]	3,734		3,937			3,910
Property & Casualty Other Operations	—		—			32
Group Benefits
Group disability	1,718		1,506			1,479
Group life	1,745		1,512			1,477
Other	214		205			180
Total Group Benefits	3,677		3,223			3,136
Mutual Funds
Mutual Fund	706		601			607
Life and annuity run-off business held for sale	98		100			116
Total Mutual Funds	804		701			723
Corporate [3]	4		3			9
Total earned premiums and fee income	15,121		14,554			14,361
Total net investment income	1,603		1,577			1,561
Net realized capital gains (loss)	165		(110		)	(12		)
Other revenues	85		86			87
Total revenues	$	16,974	$	16,107		$	15,997

[1] Commercial Lines includes installment fees of $37, $39 and $40, for 2017, 2016 and 2015, respectively. Personal Lines includes installment fees of $44, $39, and $37, for 2017, 2016 and 2015, respectively.

[2] For 2017, 2016 and 2015, AARP members accounted for earned premiums of $3.2 billion, $3.3 billion and $3.2 billion, respectively.

[3] Includes revenues and expenses not allocated to remaining reporting segments.

Reconciliation of Net Income from Segments to Consolidated

Net (Loss) Income

	For the years ended December 31,
	2017			2016			2015
Commercial Lines [1]	$	865		$	994		$	991
Personal Lines [1]	(9		)	(9		)	199
Property & Casualty Other Operations	69			(529		)	(53		)
Group Benefits	294			230			187
Mutual Funds	106			78			86
Corporate	(4,456		)	132			272
Net (loss) income	$	(3,131	)	$	896		$	1,682

[1] For 2016 and 2015, there was a segment change which resulted in a movement from Commercial Lines to Personal Lines of $13 and $12 of net servicing income associated with our participation in the National Flood Insurance Program.

Reconciliation of Other Significant Reconciling Item from Segments to Consolidated

Net investment income

	For the years ended December 31,
	2017		2016		2015
Commercial Lines	$	949	$	917	$	910
Personal Lines	141		135		128
Property & Casualty Other Operations	106		127		133
Group Benefits	381		366		371
Mutual Funds	3		1		1
Corporate	23		31		18
Net investment income	$	1,603	$	1,577	$	1,561

Amortization of Deferred Policy Acquisition Costs

	For the years ended December 31,
	2017		2016		2015
Commercial Lines	$	1,009	$	973	$	951
Personal Lines	309		348		359
Group Benefits	33		31		31
Mutual Funds	21		24		22
Corporate [1]	—		1		1
Total amortization of deferred policy acquisition costs	$	1,372	$	1,377	$	1,364

[1] Certain retained expenses of the Company's life and annuity run-off business have been reclassified to Corporate for the prior periods.

Amortization of Other Intangible Assets

	For the years ended December 31,
	2017		2016		2015
Commercial Lines	$	1	$	—	$	—
Personal Lines	4		4		4
Group Benefits	9		—		—
Total amortization of other intangible assets	$	14	$	4	$	4

Income Tax Expense (Benefit)

	For the years ended December 31,
	2017		2016			2015
Commercial Lines	$	377	415			403
Personal Lines	26		(23		)	88
Property & Casualty Other Operations	24		(355		)	(47		)
Group Benefits	38		83			63
Mutual Funds	63		43			48
Corporate	457		(329		)	(266		)
Total income tax expense (benefit)	$	985	$	(166	)	$	289

Reconciliation of Assets from Segment to Consolidated

Assets

	As of December 31,
	2017		2016
Commercial Lines [1] [2]	$	31,281	$	29,845
Personal Lines [1]	6,251		6,091
Property & Casualty Other Operations	3,568		4,732
Group Benefits [3]	14,478		8,825
Mutual Funds	547		480
Corporate	169,135		174,603
Total assets	$	225,260	$	224,576

[1] For 2016, there was a segment change which resulted in a movement from Commercial Lines to Personal Lines of $8 of total assets associated with our participation in the National Flood Insurance Program.

[2] 2017 and 2016 reflect the addition of $688 and $712, respectively, of gross reserves and reinsurance recoverables for structured settlements reserves and recoverables due from the Company's life and annuity business now classified as held for sale. These amounts were previously eliminated in consolidation.

[3] Certain retained assets of the Company's life and annuity run-off business have been reclassified to Corporate for the prior period.