Fair Value (Details) (USD $) In Millions	Sep. 30, 2011	Dec. 31, 2010
Assets [Abstract]
Short-term investments	$ 15,913	$ 9,384
Mortgage Loans on Real Estate, Commercial and Consumer, Net	59,209	58,976
Total derivative assets	16,284	7,777
Other Investments	23,138	15,430
Net embedded derivatives within asset host contracts	3	128
Separate account assets	191,499	183,138
Liabilities [Abstract]
Total derivative liabilities	3,959	4,747
Net embedded derivatives within liability host contracts	4,881	2,634
Other liabilities relating to variable interest entities	23,121	20,366
Variable interest entities \| Recurring [Member]
Assets [Abstract]
Mortgage Loans on Real Estate, Commercial and Consumer, Net	3,227	6,840
Liabilities [Abstract]
Long-term Debt, Fair Value	3,157	6,820
Variable interest entities \| Recurring [Member] \| Level 1 [Member]
Assets [Abstract]
Mortgage Loans on Real Estate, Commercial and Consumer, Net	0	0
Liabilities [Abstract]
Long-term Debt, Fair Value	0	0
Variable interest entities \| Recurring [Member] \| Level 2 [Member]
Assets [Abstract]
Mortgage Loans on Real Estate, Commercial and Consumer, Net	3,227	6,840
Liabilities [Abstract]
Long-term Debt, Fair Value	3,045	6,636
Variable interest entities \| Recurring [Member] \| Level 3 [Member]
Assets [Abstract]
Mortgage Loans on Real Estate, Commercial and Consumer, Net	0	0
Liabilities [Abstract]
Long-term Debt, Fair Value	112	184
Fixed maturity securities [Member] \| Recurring [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	353,927	324,797
Fixed maturity securities [Member] \| Recurring [Member] \| Level 1 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	21,817	15,025
Fixed maturity securities [Member] \| Recurring [Member] \| Level 2 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	311,824	287,056
Fixed maturity securities [Member] \| Recurring [Member] \| Level 3 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	20,286	22,716
U.S. corporate securities [Member] \| Recurring [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	106,575	91,772
U.S. corporate securities [Member] \| Recurring [Member] \| Level 1 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	0	0
U.S. corporate securities [Member] \| Recurring [Member] \| Level 2 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	99,204	84,623
U.S. corporate securities [Member] \| Recurring [Member] \| Level 3 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	7,371	7,149
Foreign corporate securities [Member] \| Recurring [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	63,522	67,888
Foreign corporate securities [Member] \| Recurring [Member] \| Level 1 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	0	0
Foreign corporate securities [Member] \| Recurring [Member] \| Level 2 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	58,793	62,162
Foreign corporate securities [Member] \| Recurring [Member] \| Level 3 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	4,729	5,726
Foreign government debt securities [Member] \| Recurring [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	52,959	42,002
Foreign government debt securities [Member] \| Recurring [Member] \| Level 1 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	68	149
Foreign government debt securities [Member] \| Recurring [Member] \| Level 2 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	49,002	38,719
Foreign government debt securities [Member] \| Recurring [Member] \| Level 3 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	3,889	3,134
RMBS [Member] \| Recurring [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	41,893	44,733
RMBS [Member] \| Recurring [Member] \| Level 1 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	25	274
RMBS [Member] \| Recurring [Member] \| Level 2 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	41,256	43,037
RMBS [Member] \| Recurring [Member] \| Level 3 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	612	1,422
U.S. Treasury and agency securities [Member] \| Recurring [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	41,834	33,304
U.S. Treasury and agency securities [Member] \| Recurring [Member] \| Level 1 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	21,724	14,602
U.S. Treasury and agency securities [Member] \| Recurring [Member] \| Level 2 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	20,079	18,623
U.S. Treasury and agency securities [Member] \| Recurring [Member] \| Level 3 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	31	79
CMBS [Member] \| Recurring [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	19,585	20,675
CMBS [Member] \| Recurring [Member] \| Level 1 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	0	0
CMBS [Member] \| Recurring [Member] \| Level 2 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	18,753	19,664
CMBS [Member] \| Recurring [Member] \| Level 3 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	832	1,011
ABS [Member] \| Recurring [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	14,418	14,287
ABS [Member] \| Recurring [Member] \| Level 1 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	0	0
ABS [Member] \| Recurring [Member] \| Level 2 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	11,649	10,142
ABS [Member] \| Recurring [Member] \| Level 3 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	2,769	4,145
State and political subdivision securities [Member] \| Recurring [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	13,141	10,129
State and political subdivision securities [Member] \| Recurring [Member] \| Level 1 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	0	0
State and political subdivision securities [Member] \| Recurring [Member] \| Level 2 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	13,088	10,083
State and political subdivision securities [Member] \| Recurring [Member] \| Level 3 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	53	46
Other fixed maturity securities [Member] \| Recurring [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	0	7
Other fixed maturity securities [Member] \| Recurring [Member] \| Level 1 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	0	0
Other fixed maturity securities [Member] \| Recurring [Member] \| Level 2 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	0	3
Other fixed maturity securities [Member] \| Recurring [Member] \| Level 3 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	0	4
Equity Securities [Member] \| Recurring [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	3,118	3,602
Equity Securities [Member] \| Recurring [Member] \| Level 1 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	875	831
Equity Securities [Member] \| Recurring [Member] \| Level 2 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	1,495	1,598
Equity Securities [Member] \| Recurring [Member] \| Level 3 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	748	1,173
Common stock \| Recurring [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	2,211	2,193
Common stock \| Recurring [Member] \| Level 1 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	875	831
Common stock \| Recurring [Member] \| Level 2 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	1,097	1,094
Common stock \| Recurring [Member] \| Level 3 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	239	268
Non-redeemable preferred stock [Member] \| Recurring [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	907	1,409
Non-redeemable preferred stock [Member] \| Recurring [Member] \| Level 1 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	0	0
Non-redeemable preferred stock [Member] \| Recurring [Member] \| Level 2 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	398	504
Non-redeemable preferred stock [Member] \| Recurring [Member] \| Level 3 [Member]
Assets [Abstract]
Available-for-sale securities, fair value disclosure	509	905
Recurring [Member]
Assets [Abstract]
Actively Traded Securities	18,698	18,589
Short-term investments	15,292	8,565
Total mortgage loans	5,817	9,350
Mortgage loans held-for-sale	2,590	2,510
MSRs	686	950
Investment funds	480	494
Total derivative assets	16,284	7,777
Other Investments	17,450	9,221
Net embedded derivatives within asset host contracts	356	185
Separate account assets	191,499	183,138
Total assets	606,157	557,447
Liabilities [Abstract]
Total derivative liabilities	3,959	4,562
Net embedded derivatives within liability host contracts	4,881	2,634
Trading liabilities	67	46
Total liabilities	12,064	14,062
Recurring [Member] \| Level 1 [Member]
Assets [Abstract]
Actively Traded Securities	7,332	6,270
Short-term investments	4,507	3,026
Total mortgage loans	0	0
Mortgage loans held-for-sale	0	0
MSRs	0	0
Investment funds	361	373
Total derivative assets	196	156
Other Investments	557	529
Net embedded derivatives within asset host contracts	0	0
Separate account assets	27,622	25,566
Total assets	62,710	51,247
Liabilities [Abstract]
Total derivative liabilities	129	45
Net embedded derivatives within liability host contracts	0	0
Trading liabilities	64	46
Total liabilities	193	91
Recurring [Member] \| Level 1 [Member] \| Trading Account Assets [Member]
Assets [Abstract]
Actively Traded Securities	0	0
Recurring [Member] \| Level 1 [Member] \| FVO general account securities [Member]
Assets [Abstract]
Actively Traded Securities	0	0
Recurring [Member] \| Level 1 [Member] \| FVO contractholder-directed unit-linked investments [Member]
Assets [Abstract]
Actively Traded Securities	7,332	6,270
Recurring [Member] \| Level 1 [Member] \| FVO securities held by consolidated securitization entities [Member]
Assets [Abstract]
Actively Traded Securities	0	0
Recurring [Member] \| Level 1 [Member] \| Interest rate contracts [Member]
Assets [Abstract]
Total derivative assets	31	131
Liabilities [Abstract]
Total derivative liabilities	109	35
Recurring [Member] \| Level 1 [Member] \| Foreign currency contracts [Member]
Assets [Abstract]
Total derivative assets	1	2
Liabilities [Abstract]
Total derivative liabilities	1	0
Recurring [Member] \| Level 1 [Member] \| Credit contracts [Member]
Assets [Abstract]
Total derivative assets	0	0
Liabilities [Abstract]
Total derivative liabilities	0	0
Recurring [Member] \| Level 1 [Member] \| Equity market contracts [Member]
Assets [Abstract]
Total derivative assets	164	23
Liabilities [Abstract]
Total derivative liabilities	19	10
Recurring [Member] \| Level 2 [Member]
Assets [Abstract]
Actively Traded Securities	10,074	11,497
Short-term investments	10,159	4,681
Total mortgage loans	5,787	9,326
Mortgage loans held-for-sale	2,560	2,486
MSRs	0	0
Investment funds	119	121
Total derivative assets	14,767	7,176
Other Investments	14,886	7,297
Net embedded derivatives within asset host contracts	2	0
Separate account assets	162,169	155,589
Total assets	516,396	477,044
Liabilities [Abstract]
Total derivative liabilities	3,694	4,245
Net embedded derivatives within liability host contracts	19	11
Trading liabilities	3	0
Total liabilities	6,761	10,892
Recurring [Member] \| Level 2 [Member] \| Trading Account Assets [Member]
Assets [Abstract]
Actively Traded Securities	413	453
Recurring [Member] \| Level 2 [Member] \| FVO general account securities [Member]
Assets [Abstract]
Actively Traded Securities	242	54
Recurring [Member] \| Level 2 [Member] \| FVO contractholder-directed unit-linked investments [Member]
Assets [Abstract]
Actively Traded Securities	9,279	10,789
Recurring [Member] \| Level 2 [Member] \| FVO securities held by consolidated securitization entities [Member]
Assets [Abstract]
Actively Traded Securities	140	201
Recurring [Member] \| Level 2 [Member] \| Interest rate contracts [Member]
Assets [Abstract]
Total derivative assets	10,082	3,583
Liabilities [Abstract]
Total derivative liabilities	2,267	1,598
Recurring [Member] \| Level 2 [Member] \| Foreign currency contracts [Member]
Assets [Abstract]
Total derivative assets	1,618	1,711
Liabilities [Abstract]
Total derivative liabilities	1,096	1,372
Recurring [Member] \| Level 2 [Member] \| Credit contracts [Member]
Assets [Abstract]
Total derivative assets	370	125
Liabilities [Abstract]
Total derivative liabilities	127	101
Recurring [Member] \| Level 2 [Member] \| Equity market contracts [Member]
Assets [Abstract]
Total derivative assets	2,697	1,757
Liabilities [Abstract]
Total derivative liabilities	204	1,174
Recurring [Member] \| Level 3 [Member]
Assets [Abstract]
Actively Traded Securities	1,292	822
Short-term investments	626	858
Total mortgage loans	30	24
Mortgage loans held-for-sale	30	24
MSRs	686	950
Investment funds	0	0
Total derivative assets	1,321	445
Other Investments	2,007	1,395
Net embedded derivatives within asset host contracts	354	185
Separate account assets	1,708	1,983
Total assets	27,051	29,156
Liabilities [Abstract]
Total derivative liabilities	136	272
Net embedded derivatives within liability host contracts	4,862	2,623
Trading liabilities	0	0
Total liabilities	5,110	3,079
Recurring [Member] \| Level 3 [Member] \| Trading Account Assets [Member]
Assets [Abstract]
Actively Traded Securities	2	10
Recurring [Member] \| Level 3 [Member] \| FVO general account securities [Member]
Assets [Abstract]
Actively Traded Securities	27	77
Recurring [Member] \| Level 3 [Member] \| FVO contractholder-directed unit-linked investments [Member]
Assets [Abstract]
Actively Traded Securities	1,263	735
Recurring [Member] \| Level 3 [Member] \| FVO securities held by consolidated securitization entities [Member]
Assets [Abstract]
Actively Traded Securities	0	0
Recurring [Member] \| Level 3 [Member] \| Interest rate contracts [Member]
Assets [Abstract]
Total derivative assets	321	39
Liabilities [Abstract]
Total derivative liabilities	23	125
Recurring [Member] \| Level 3 [Member] \| Foreign currency contracts [Member]
Assets [Abstract]
Total derivative assets	67	74
Liabilities [Abstract]
Total derivative liabilities	0	1
Recurring [Member] \| Level 3 [Member] \| Credit contracts [Member]
Assets [Abstract]
Total derivative assets	16	50
Liabilities [Abstract]
Total derivative liabilities	46	6
Recurring [Member] \| Level 3 [Member] \| Equity market contracts [Member]
Assets [Abstract]
Total derivative assets	917	282
Liabilities [Abstract]
Total derivative liabilities	67	140
Recurring [Member] \| Trading Account Assets [Member]
Assets [Abstract]
Actively Traded Securities	415	463
Recurring [Member] \| FVO general account securities [Member]
Assets [Abstract]
Actively Traded Securities	269	131
Recurring [Member] \| FVO contractholder-directed unit-linked investments [Member]
Assets [Abstract]
Actively Traded Securities	17,874	17,794
Recurring [Member] \| FVO securities held by consolidated securitization entities [Member]
Assets [Abstract]
Actively Traded Securities	140	201
Recurring [Member] \| Interest rate contracts [Member]
Assets [Abstract]
Total derivative assets	10,434	3,753
Liabilities [Abstract]
Total derivative liabilities	2,399	1,758
Recurring [Member] \| Foreign currency contracts [Member]
Assets [Abstract]
Total derivative assets	1,686	1,787
Liabilities [Abstract]
Total derivative liabilities	1,097	1,373
Recurring [Member] \| Credit contracts [Member]
Assets [Abstract]
Total derivative assets	386	175
Liabilities [Abstract]
Total derivative liabilities	173	107
Recurring [Member] \| Equity market contracts [Member]
Assets [Abstract]
Total derivative assets	3,778	2,062
Liabilities [Abstract]
Total derivative liabilities	290	1,324
Variable interest entities
Assets [Abstract]
Mortgage Loans on Real Estate, Commercial and Consumer, Net	3,277	6,840
Other Investments	98	104
Liabilities [Abstract]
Other liabilities relating to variable interest entities	$ 73	$ 93

Total fair value of mortgage loans as of the balance sheet date excluding amounts valued at lower of cost or market.

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Fair value of investments in fund assets.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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-Subparagraph b

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Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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The balance represents the amount of loans that are secured by real estate mortgages, offset by the reserve to cover probable credit losses on the loan portfolio.

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-Subparagraph (SX 210.7-03.1(c))

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Other investments not otherwise specified in the taxonomy.

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