Insurance (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Insurance Liabilities
Future policy benefits	$ 184,275	$ 170,922
Policyholder account balances	217,700	210,757	138,515
Other policy-related balances	15,599	15,750
Latin America [Member]
Insurance Liabilities
Future policy benefits	6,299	6,417
Policyholder account balances	6,159	6,232	4,643
Other policy-related balances	1,432	1,555
Asia [Member]
Insurance Liabilities
Future policy benefits	31,555	27,287
Policyholder account balances	59,578	54,506	969
Other policy-related balances	5,876	5,887
Europe, the Middle East and Africa [Member]
Insurance Liabilities
Future policy benefits	7,728	7,384
Policyholder account balances	14,396	14,095	1,140
Other policy-related balances	1,482	1,544
Retail Products [Member]
Insurance Liabilities
Future policy benefits	62,295	60,921
Policyholder account balances	69,553	66,193	65,453
Other policy-related balances	2,807	2,878
Group, Voluntary and Worksite Benefits [Member]
Insurance Liabilities
Future policy benefits	20,465	19,439
Policyholder account balances	9,273	9,676	9,486
Other policy-related balances	3,378	3,250
Corporate Benefit Funding [Member]
Insurance Liabilities
Future policy benefits	49,657	43,628
Policyholder account balances	56,367	57,828	55,556
Other policy-related balances	201	204
Corporate & Other [Member]
Insurance Liabilities
Future policy benefits	6,276	5,846
Policyholder account balances	2,374	2,227	1,268
Other policy-related balances	$ 423	$ 432

The sum of the known and estimated amounts payable as of the balance sheet date to policyholders pertaining to insured events for long-duration contracts, which can be viewed as either (a) the present value of future benefits to be paid to or on behalf of policyholders and expenses less the present value of future net premiums payable under the insurance contracts or (b) the accumulated amount of net premiums already collected less the accumulated amount of benefits and expenses already paid to or on behalf of policyholders.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 7

-Section 03

-Paragraph 13

-Subparagraph a

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 40

-Section 25

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=6482067&loc=d3e13145-158430

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 97

-Paragraph 15-21

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: 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)(1))

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 113

-Paragraph 26

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 60

-Paragraph 21-26

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details