Fair Value (Details) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Assets
Fixed maturity securities relating to variable interest entities	$ 341,744	$ 324,797
Equity securities	3,238	3,602
Actively traded securities	560	463
FVO general account securities	303	131
FVO contractholder-directed unit-linked investments	18,690	17,794
FVO securities held by consolidated securitization entities	147	201
Total Trading Securities And Other Trading Assets	19,700	18,589
Short-term investments	11,761	8,565
Held-for-investment	90,198	91,218
Mortgage Loans on Real Estate, Commercial and Consumer, Net	60,819	58,976
Mortgage loans held-for-sale	1,863	2,510
Total mortgage loans	8,560	9,350
Interest rate contracts	4,186	3,753
Foreign currency contracts	1,504	1,787
Credit contracts	161	175
Equity market contracts	1,842	2,062
Total derivative assets	7,693	7,777
Total other invested assets	9,141	9,221
Net embedded derivatives within asset host contracts	198	185
MSRs	964	950
Investment funds	484	494
Separate account assets	202,382	183,138
Total assets	596,724	557,447
Liabilities
Interest rate contracts	1,637	1,758
Foreign currency contracts	1,480	1,373
Credit contracts	97	107
Equity market contracts	607	1,324
Total derivative liabilities	3,821	4,562
Net embedded derivatives within liability host contracts	2,285	2,634
Long-term debt of consolidated securitization entities	6,547	6,820
Other liabilities relating to variable interest entities	19,707	20,366
Trading liabilities	54	46
Total liabilities	12,707	14,062
Equity Securities [Member]
Assets
Equity securities	3,238	3,602
Fixed maturity securities [Member]
Assets
Fixed maturity securities relating to variable interest entities	341,744	324,797
State and political subdivision securities [Member]
Assets
Fixed maturity securities relating to variable interest entities	11,669	10,129
State and political subdivision securities [Member] \| Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member]
Assets
Fixed maturity securities relating to variable interest entities	0	0
State and political subdivision securities [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Assets
Fixed maturity securities relating to variable interest entities	11,580	10,083
State and political subdivision securities [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Assets
Fixed maturity securities relating to variable interest entities	89	46
U.S. corporate securities [Member]
Assets
Fixed maturity securities relating to variable interest entities	96,797	91,772
Held-for-investment	2,610	2,435
U.S. corporate securities [Member] \| Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member]
Assets
Fixed maturity securities relating to variable interest entities	0	0
U.S. corporate securities [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Assets
Fixed maturity securities relating to variable interest entities	89,926	84,623
U.S. corporate securities [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Assets
Fixed maturity securities relating to variable interest entities	6,871	7,149
RMBS [Member]
Assets
Fixed maturity securities relating to variable interest entities	43,550	44,733
Held-for-investment	43,550	44,733
RMBS [Member] \| Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member]
Assets
Fixed maturity securities relating to variable interest entities	0	274
RMBS [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Assets
Fixed maturity securities relating to variable interest entities	43,116	43,037
RMBS [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Assets
Fixed maturity securities relating to variable interest entities	434	1,422
U.S. Treasury and agency securities [Member]
Assets
Fixed maturity securities relating to variable interest entities	35,565	33,304
U.S. Treasury and agency securities [Member] \| Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member]
Assets
Fixed maturity securities relating to variable interest entities	19,812	14,602
U.S. Treasury and agency securities [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Assets
Fixed maturity securities relating to variable interest entities	15,727	18,623
U.S. Treasury and agency securities [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Assets
Fixed maturity securities relating to variable interest entities	26	79
CMBS [Member]
Assets
Fixed maturity securities relating to variable interest entities	19,518	20,675
Held-for-investment	19,518	20,675
CMBS [Member] \| Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member]
Assets
Fixed maturity securities relating to variable interest entities	0	0
CMBS [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Assets
Fixed maturity securities relating to variable interest entities	18,737	19,664
CMBS [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Assets
Fixed maturity securities relating to variable interest entities	781	1,011
ABS [Member]
Assets
Fixed maturity securities relating to variable interest entities	14,857	14,287
Held-for-investment	14,857	14,287
ABS [Member] \| Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member]
Assets
Fixed maturity securities relating to variable interest entities	0	0
ABS [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Assets
Fixed maturity securities relating to variable interest entities	12,406	10,142
ABS [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Assets
Fixed maturity securities relating to variable interest entities	2,451	4,145
Other fixed maturity securities [Member]
Assets
Fixed maturity securities relating to variable interest entities	4	7
Other fixed maturity securities [Member] \| Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member]
Assets
Fixed maturity securities relating to variable interest entities	0	0
Other fixed maturity securities [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Assets
Fixed maturity securities relating to variable interest entities	2	3
Other fixed maturity securities [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Assets
Fixed maturity securities relating to variable interest entities	2	4
Foreign corporate securities [Member] \| Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member]
Assets
Fixed maturity securities relating to variable interest entities	0	0
Variable interest entities \| Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member]
Assets
Mortgage Loans on Real Estate, Commercial and Consumer, Net	0	0
Common Stock \| Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member]
Assets
Equity securities	685	831
Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member]
Assets
Fixed maturity securities relating to variable interest entities	19,894	15,025
Equity securities	685	831
Actively traded securities	0	0
FVO general account securities	0	0
FVO contractholder-directed unit-linked investments	7,622	6,270
FVO securities held by consolidated securitization entities	0	0
Total Trading Securities And Other Trading Assets	7,622	6,270
Short-term investments	4,265	3,026
Mortgage loans held-for-sale	0	0
Total mortgage loans	0	0
Interest rate contracts	55	131
Foreign currency contracts	4	2
Credit contracts	0	0
Equity market contracts	14	23
Total derivative assets	73	156
Total other invested assets	435	529
Net embedded derivatives within asset host contracts	0	0
MSRs	0	0
Investment funds	362	373
Separate account assets	28,099	25,566
Total assets	61,000	51,247
Liabilities
Interest rate contracts	54	35
Foreign currency contracts	4	0
Credit contracts	0	0
Equity market contracts	95	10
Total derivative liabilities	153	45
Net embedded derivatives within liability host contracts	0	0
Long-term debt of consolidated securitization entities	0	0
Trading liabilities	54	46
Total liabilities	207	91
Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member] \| Foreign government debt securities [Member]
Assets
Fixed maturity securities relating to variable interest entities	82	149
Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member] \| Non-redeemable preferred stock [Member]
Assets
Equity securities	0	0
Foreign corporate securities [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Assets
Fixed maturity securities relating to variable interest entities	64,694	62,162
Variable interest entities \| Significant Other Observable Inputs (Level 2) [Member]
Assets
Mortgage Loans on Real Estate, Commercial and Consumer, Net	6,697	6,840
Common Stock \| Significant Other Observable Inputs (Level 2) [Member]
Assets
Equity securities	1,100	1,094
Significant Other Observable Inputs (Level 2) [Member]
Assets
Fixed maturity securities relating to variable interest entities	302,191	287,056
Equity securities	1,594	1,598
Actively traded securities	558	453
FVO general account securities	249	54
FVO contractholder-directed unit-linked investments	10,445	10,789
FVO securities held by consolidated securitization entities	147	201
Total Trading Securities And Other Trading Assets	11,399	11,497
Short-term investments	6,764	4,681
Mortgage loans held-for-sale	1,831	2,486
Total mortgage loans	8,528	9,326
Interest rate contracts	4,087	3,583
Foreign currency contracts	1,451	1,711
Credit contracts	114	125
Equity market contracts	1,581	1,757
Total derivative assets	7,233	7,176
Total other invested assets	7,355	7,297
Net embedded derivatives within asset host contracts	2	0
MSRs	0	0
Investment funds	122	121
Separate account assets	172,447	155,589
Total assets	510,280	477,044
Liabilities
Interest rate contracts	1,472	1,598
Foreign currency contracts	1,476	1,372
Credit contracts	92	101
Equity market contracts	320	1,174
Total derivative liabilities	3,360	4,245
Net embedded derivatives within liability host contracts	15	11
Long-term debt of consolidated securitization entities	6,413	6,636
Trading liabilities	0	0
Total liabilities	9,788	10,892
Significant Other Observable Inputs (Level 2) [Member] \| Foreign government debt securities [Member]
Assets
Fixed maturity securities relating to variable interest entities	46,003	38,719
Significant Other Observable Inputs (Level 2) [Member] \| Non-redeemable preferred stock [Member]
Assets
Equity securities	494	504
Foreign corporate securities [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Assets
Fixed maturity securities relating to variable interest entities	5,844	5,726
Variable interest entities \| Significant Unobservable Inputs (Level 3) [Member]
Assets
Mortgage Loans on Real Estate, Commercial and Consumer, Net	0	0
Common Stock \| Significant Unobservable Inputs (Level 3) [Member]
Assets
Equity securities	305	268
Significant Unobservable Inputs (Level 3) [Member]
Assets
Fixed maturity securities relating to variable interest entities	19,659	22,716
Equity securities	959	1,173
Actively traded securities	2	10
FVO general account securities	54	77
FVO contractholder-directed unit-linked investments	623	735
FVO securities held by consolidated securitization entities	0	0
Total Trading Securities And Other Trading Assets	679	822
Short-term investments	732	858
Mortgage loans held-for-sale	32	24
Total mortgage loans	32	24
Interest rate contracts	44	39
Foreign currency contracts	49	74
Credit contracts	47	50
Equity market contracts	247	282
Total derivative assets	387	445
Total other invested assets	1,351	1,395
Net embedded derivatives within asset host contracts	196	185
MSRs	964	950
Investment funds	0	0
Separate account assets	1,836	1,983
Total assets	25,444	29,156
Liabilities
Interest rate contracts	111	125
Foreign currency contracts	0	1
Credit contracts	5	6
Equity market contracts	192	140
Total derivative liabilities	308	272
Net embedded derivatives within liability host contracts	2,270	2,623
Long-term debt of consolidated securitization entities	134	184
Trading liabilities	0	0
Total liabilities	2,712	3,079
Significant Unobservable Inputs (Level 3) [Member] \| Foreign government debt securities [Member]
Assets
Fixed maturity securities relating to variable interest entities	3,161	3,134
Significant Unobservable Inputs (Level 3) [Member] \| Non-redeemable preferred stock [Member]
Assets
Equity securities	654	905
Foreign corporate securities [Member]
Assets
Fixed maturity securities relating to variable interest entities	70,538	67,888
Held-for-investment	3,350	2,950
Common Stock
Assets
Equity securities	2,090	2,193
Foreign government debt securities [Member]
Assets
Fixed maturity securities relating to variable interest entities	49,246	42,002
Non-redeemable preferred stock [Member]
Assets
Equity securities	1,148	1,409
Estimated Fair Value [Member]
Assets
Mortgage Loans on Real Estate, Commercial and Consumer, Net	56,641	53,927
Liabilities
Long-term debt of consolidated securitization entities	6,547	6,820
Other liabilities relating to variable interest entities	2,962	2,777
Carrying Value [Member]
Assets
Mortgage Loans on Real Estate, Commercial and Consumer, Net	54,122	52,136
Liabilities
Other liabilities relating to variable interest entities	2,959	2,777
Mortgage loans, net [Member]
Assets
Held-for-investment	475	350
Real estate joint ventures [Member]
Assets
Held-for-investment	58	40
Other limited partnership interests [Member]
Assets
Held-for-investment	4,381	4,383
Variable interest entities
Assets
Fixed maturity securities relating to variable interest entities	3,357	3,330
Total Trading Securities And Other Trading Assets	359	387
Mortgage Loans on Real Estate, Commercial and Consumer, Net	6,697	6,840
Liabilities
Other liabilities relating to variable interest entities	$ 82	$ 93

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+ References

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-Paragraph 47

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 1
-Subparagraph c
-Article 7

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Carrying amount as of the balance sheet date of liabilities not otherwise specified in the taxonomy. Also serves as the sum of liabilities not individually reported in the financial statements, or not separately disclosed in notes.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 15
-Article 9

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- Definition

The fair value of the assets held by the Entity for the benefit of separate account policyholders.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 11
-Article 7

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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 03-1
-Paragraph 10-18

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 113
-Paragraph 53, 54

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Fair value as of the balance sheet date of an asset representing net future revenues from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements. The fair value of an asset is the amount at which that asset could be bought or sold (or settled) in a current transaction between willing parties, other than in a forced or liquidation sale. Rights may be obtained via (1) acquisition or assumption of a servicing obligation that does not relate to financial assets of the servicer or its consolidated affiliates; or (2) by originating loans and then (a) transferring the loans to a qualifying special purpose entity in a transaction that meets the necessary transfer and classification requirements, or (b) transferring the loans in a transaction that meets the requirements for sale accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 13A, 13B

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 17
-Subparagraph f(1)(a)

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The total of financial instruments that are bought and held principally for the purpose of selling them in the near term (thus held for only a short period of time) or for debt and equity securities formerly categorized as available-for-sale or held-to-maturity which the entity held as of the date it opted to account for such securities at fair value. An enterprise may also categorize such a security as trading without the intent to sell it in the near term assuming the decision to categorize the security as trading occurred at acquisition; this is the reason why the trading category of investments in debt and equity securities are bought and sold "principally" for sale in the near term. Transfers into and out of the trading category should be rare. Such financial instruments that are held as of the reporting date are measured at fair value with unrealized holding gains and losses (the difference between fair value and the previously reported carrying amount) included in earnings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-Paragraph 29

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 13

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Implementation Guide (Q and A)
-Number FAS115
-Paragraph 35

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 12
-Subparagraph a

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