v3.8.0.1

Reinsurance (Reinsurance Recoverable) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Effects of Reinsurance [Line Items]
Total reinsurance recoverables	$ 5,159	$ 4,211
Individual and group annuities
Effects of Reinsurance [Line Items]
Total reinsurance recoverables	698	658
Life insurance
Effects of Reinsurance [Line Items]
Total reinsurance recoverables	4,290	3,388
Other reinsurance
Effects of Reinsurance [Line Items]
Total reinsurance recoverables	171	165
CIGNA | Individual and group annuities
Effects of Reinsurance [Line Items]
Total reinsurance recoverables	682	656
Hartford Life Business | Life insurance
Effects of Reinsurance [Line Items]
Total reinsurance recoverables	2,145	2,049
Reinsurance Payable	1,301	1,205
Union Hamilton | Individual and group annuities
Effects of Reinsurance [Line Items]
Total reinsurance recoverables	$ 13	$ 0

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The carrying amount as of the balance sheet date of the known and estimated amounts owed to insurers under reinsurance treaties or other arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.13(a)(3),(c))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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- Definition

Amount, after valuation allowance, recoverable under reinsurance contracts including premium paid under reinsurance contracts. Examples include, but are not limited to, settled and unsettled claims, incurred but not reported losses, loss adjustment expense, premium paid, policy benefits and policy reserves.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 20
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6480758&loc=d3e6824-158387

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 310
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6485522&loc=d3e21409-158489

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.(a),6)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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