SCHEDULE IV - REINSURANCE (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Life insurance in force
Gross life insurance in force	$ 135,627us-gaap_LifeInsuranceInForceGross	$ 528,473us-gaap_LifeInsuranceInForceGross	$ 521,209us-gaap_LifeInsuranceInForceGross
Life insurance in force, Ceded to other companies	98,165us-gaap_LifeInsuranceInForceCeded	196,274us-gaap_LifeInsuranceInForceCeded	209,874us-gaap_LifeInsuranceInForceCeded
Life insurance in force, Assumed from other companies	290,565us-gaap_LifeInsuranceInForceAssumed	14,003us-gaap_LifeInsuranceInForceAssumed	14,834us-gaap_LifeInsuranceInForceAssumed
Life insurance in force, Net amount	328,027us-gaap_LifeInsuranceInForceNet	346,202us-gaap_LifeInsuranceInForceNet	326,169us-gaap_LifeInsuranceInForceNet
Life insurance in force, Percentage of amount assumed to net	88.60%	4.00%	4.50%
Premiums and contract charges
Premiums and contract charges, Goss amount	31,858us-gaap_DirectPremiumsEarned	31,547us-gaap_DirectPremiumsEarned	30,654us-gaap_DirectPremiumsEarned
Premiums and contract charges, Ceded to other companies	1,446us-gaap_CededPremiumsEarned	1,708us-gaap_CededPremiumsEarned	1,764us-gaap_CededPremiumsEarned
Premiums and contract charges, Assumed from other companies	674us-gaap_AssumedPremiumsEarned	131us-gaap_AssumedPremiumsEarned	88us-gaap_AssumedPremiumsEarned
Property-liability insurance premiums earned, net of reinsurance	31,086us-gaap_PremiumsEarnedNet	29,970us-gaap_PremiumsEarnedNet	28,978us-gaap_PremiumsEarnedNet
Premiums and contract charges, Percentage of amount assumed to net	2.20%us-gaap_PremiumsPercentageAssumedToNet	0.40%us-gaap_PremiumsPercentageAssumedToNet	0.30%us-gaap_PremiumsPercentageAssumedToNet
Reinsurance or coinsurance income net of premium ceded	0	0	0
Life insurance
Premiums and contract charges
Premiums and contract charges, Goss amount	1,144	2,088	2,089
Premiums and contract charges, Ceded to other companies	360	538	556
Premiums and contract charges, Assumed from other companies	629	82	55
Property-liability insurance premiums earned, net of reinsurance	1,413	1,632	1,588
Premiums and contract charges, Percentage of amount assumed to net	44.50%	5.00%	3.50%
Accident and health insurance
Premiums and contract charges
Premiums and contract charges, Goss amount	800	821	771
Premiums and contract charges, Ceded to other companies	56	101	118
Property-liability insurance premiums earned, net of reinsurance	744	720	653
Property-liability insurance
Premiums and contract charges
Premiums and contract charges, Goss amount	29,914	28,638	27,794
Premiums and contract charges, Ceded to other companies	1,030	1,069	1,090
Premiums and contract charges, Assumed from other companies	45	49	33
Property-liability insurance premiums earned, net of reinsurance	$ 28,929	$ 27,618	$ 26,737
Premiums and contract charges, Percentage of amount assumed to net	0.20%	0.20%	0.10%

Represents the amount of reinsurance or coinsurance income netted against premium ceded.

No definition available.

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- Definition

Amount of earned premiums assumed from other entities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 17

-Article 12

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 235

-Section S99

-Paragraph 2

-Subparagraph (SX 210.12-17)

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-Publisher FASB

-Name Accounting Standards Codification

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-Section S99

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 605

-Section 50

-Paragraph 1

-Subparagraph (b),(c)(2)

-URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 1

-Article 7

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- Definition

Amount of earned premiums ceded to other entities.

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- Definition

Amount, before premiums ceded to other entities and premiums assumed by the entity, of premiums earned.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 17

-Article 12

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 235

-Section S99

-Paragraph 2

-Subparagraph (SX 210.12-17)

-URI http://asc.fasb.org/extlink&oid=34713774&loc=d3e574992-122915

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-04.1)

-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 1

-Article 7

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 605

-Section 50

-Paragraph 1

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-URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547

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- Definition

Amount of life insurance issued and outstanding assumed from other entities. Includes, but not limited to, dividends and adjustments to face value.

+ References

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- Definition

Amount of life insurance issued and outstanding ceded to other entities. Includes, but not limited to, dividends and adjustments to face value.

+ References

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- Definition

Amount before contracts ceded to other entities and contracts assumed by the entity of life insurance issued and outstanding. Includes, but not limited to, dividends and adjustments to face value.

+ References

+ Details

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- Definition

Amount after contracts ceded to other entities and contracts assumed by the entity of life insurance issued and outstanding. Includes, but not limited to, dividends and adjustments to face value.

+ References

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- Definition

Percentage of assumed life insurance issued and outstanding contracts to life insurance issued and outstanding after contracts ceded to other entities and contracts assumed by the entity. Includes, but not limited to, dividends and adjustments to face value.

+ References

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- Definition

Amount, after premiums ceded to other entities and premiums assumed by the entity, of premiums earned.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 17

-Article 12

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 235

-Section S99

-Paragraph 2

-Subparagraph (SX 210.12-17)

-URI http://asc.fasb.org/extlink&oid=34713774&loc=d3e574992-122915

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-04.1)

-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 1

-Article 7

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

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-Paragraph 1

-Subparagraph (SX 210.9-04.13(c))

-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

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- Definition

Percentage of assumed premiums earned by the entity to net premiums earned.

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