Derivatives and Hedging Activities (Balance Sheet) (Details) - USD ($) $ in Millions		Sep. 30, 2015	Dec. 31, 2014
Derivatives and Hedging Activities
Derivative liability	[1]	$ 4,741	$ 4,688
Derivative Asset, Fair Value, Gross Asset		4,093	4,101
Derivative Liability After Application Of Master Netting Arrangements And Cash Collateral Including Embedded Derivative Liabilities		1,800	1,500
GMWB and GMAB [Member] | GMWB and GMAB embedded derivatives [Member] | Policyholder account balances, future policy benefits and claims [Member]
Derivatives and Hedging Activities
Derivative asset		112	221
Derivative liability		1,219	700
Derivatives designated as hedging instruments [Member] | Fair value hedges [Member]
Derivatives and Hedging Activities
Derivative Asset, Fair Value, Gross Asset		76	76
Derivatives designated as hedging instruments [Member] | Fixed rate debt [Member] | Other assets [Member] | Fair value hedges [Member]
Derivatives and Hedging Activities
Derivative Asset, Fair Value, Gross Asset		76	76
Derivatives not designated as hedging instruments [Member]
Derivatives and Hedging Activities
Derivative liability		4,741	4,688
Derivative Asset, Fair Value, Gross Asset		4,017	4,025
Derivatives not designated as hedging instruments [Member] | GMWB and GMAB [Member]
Derivatives and Hedging Activities
Derivative liability		4,284	4,267
Derivative Asset, Fair Value, Gross Asset		3,984	3,938
Derivatives not designated as hedging instruments [Member] | GMWB and GMAB [Member] | Interest rate contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Derivative Asset, Fair Value, Gross Asset		2,238	1,955
Derivatives not designated as hedging instruments [Member] | GMWB and GMAB [Member] | Interest rate contracts [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Derivative liability		1,168	1,136
Derivatives not designated as hedging instruments [Member] | GMWB and GMAB [Member] | Equity contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Derivative Asset, Fair Value, Gross Asset		1,706	1,954
Derivatives not designated as hedging instruments [Member] | GMWB and GMAB [Member] | Equity contracts [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Derivative liability		1,998	2,650
Derivatives not designated as hedging instruments [Member] | GMWB and GMAB [Member] | Credit contracts [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Derivative liability		5
Derivatives not designated as hedging instruments [Member] | GMWB and GMAB [Member] | Foreign exchange contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Derivative Asset, Fair Value, Gross Asset		40	29
Derivatives not designated as hedging instruments [Member] | GMWB and GMAB [Member] | Foreign exchange contracts [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Derivative liability		6	2
Derivatives not designated as hedging instruments [Member] | GMWB and GMAB [Member] | GMWB and GMAB embedded derivatives [Member] | Policyholder account balances, future policy benefits and claims [Member]
Derivatives and Hedging Activities
Derivative liability	[2],[3]	1,107	479
Derivatives not designated as hedging instruments [Member] | Investments [Member] | Interest rate contracts [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Derivative liability		32
Derivatives not designated as hedging instruments [Member] | EIA embedded derivatives [Member] | Equity contracts [Member] | Policyholder account balances, future policy benefits and claims [Member]
Derivatives and Hedging Activities
Derivative liability		5	6
Derivatives not designated as hedging instruments [Member] | IUL [Member] | Equity contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Derivative Asset, Fair Value, Gross Asset		12	39
Derivatives not designated as hedging instruments [Member] | IUL [Member] | Equity contracts [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Derivative liability		2	12
Derivatives not designated as hedging instruments [Member] | IUL embedded derivatives [Member] | Equity contracts [Member] | Policyholder account balances, future policy benefits and claims [Member]
Derivatives and Hedging Activities
Derivative liability		317	242
Derivatives not designated as hedging instruments [Member] | Stock market certificates [Member] | Equity contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Derivative Asset, Fair Value, Gross Asset		10	46
Derivatives not designated as hedging instruments [Member] | Stock market certificates [Member] | Equity contracts [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Derivative liability		7	40
Derivatives not designated as hedging instruments [Member] | Stock market certificates embedded derivatives [Member] | Equity contracts [Member] | Customer deposits [Member]
Derivatives and Hedging Activities
Derivative liability		2	6
Derivatives not designated as hedging instruments [Member] | Deferred compensation [Member] | Equity contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Derivative Asset, Fair Value, Gross Asset		4
Derivatives not designated as hedging instruments [Member] | Foreign currency [Member] | Foreign exchange contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Derivative Asset, Fair Value, Gross Asset		1	1
Derivatives not designated as hedging instruments [Member] | Seed money [Member] | Foreign exchange contracts [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Derivative liability			1
Derivatives not designated as hedging instruments [Member] | Macro hedge program [Member] | Other contract [Member] | Other assets [Member]
Derivatives and Hedging Activities
Derivative Asset, Fair Value, Gross Asset		6	1
Derivatives not designated as hedging instruments [Member] | Macro hedge program [Member] | Other contract [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Derivative liability		92	114
Derivatives not designated as hedging instruments [Member] | Total other derivatives [Member]
Derivatives and Hedging Activities
Derivative liability		457	421
Derivative Asset, Fair Value, Gross Asset		$ 33	$ 87

[1] The fair value of the Company’s derivative liabilities after considering the effects of master netting arrangements, cash collateral held by the same counterparty and the fair value of net embedded derivatives was $1.8 billion and $1.5 billion at September 30, 2015 and December 31, 2014, respectively. See Note 11 for additional information related to master netting arrangements and cash collateral. See Note 3 for information about derivatives held by consolidated VIEs. See (2) above for additional information related to gross GMWB and GMAB embedded derivatives.

[2] The fair value of the GMWB and GMAB embedded derivatives at September 30, 2015 included $1.2 billion of individual contracts in a liability position and $112 million of individual contracts in an asset position. The fair value of the GMWB and GMAB embedded derivatives at December 31, 2014 included $700 million of individual contracts in a liability position and $221 million of individual contracts in an asset position.

[3] The fair values of GMWB and GMAB embedded derivatives fluctuate based on changes in equity, interest rate and credit markets.