Insurance (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Insurance Liabilities
Future policy benefits	$ 191,068	$ 184,275
Policyholder account balances	226,882	217,700
Other policy-related balances	15,836	15,599
Latin America [Member]
Insurance Liabilities
Future policy benefits	7,325	6,299
Policyholder account balances	7,017	6,159
Other policy-related balances	1,493	1,432
Asia [Member]
Insurance Liabilities
Future policy benefits	33,671	32,419
Policyholder account balances	63,953	59,739
Other policy-related balances	6,102	6,109
Europe, the Middle East and Africa [Member]
Insurance Liabilities
Future policy benefits	6,084	6,864
Policyholder account balances	12,204	14,235
Other policy-related balances	1,245	1,249
Retail [Member]
Insurance Liabilities
Future policy benefits	67,480	66,451
Policyholder account balances	67,417	69,553
Other policy-related balances	2,820	2,868
Group, Voluntary & Worksite Benefits [Member]
Insurance Liabilities
Future policy benefits	17,883	16,309
Policyholder account balances	9,039	9,273
Other policy-related balances	3,493	3,317
Corporate Benefit Funding [Member]
Insurance Liabilities
Future policy benefits	52,497	49,657
Policyholder account balances	64,162	56,367
Other policy-related balances	181	201
Corporate & Other [Member]
Insurance Liabilities
Future policy benefits	6,128	6,276
Policyholder account balances	3,090	2,374
Other policy-related balances	$ 502	$ 423

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 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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Reference 2: 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 3: 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 4: 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 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 13

-Subparagraph a

-Article 7

Reference 6: 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

+ Details