Derivatives and Hedging Activities (Balance Sheet) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Derivatives and Hedging Activities
Asset	$ 3,464		$ 3,418
Liability	4,139		4,370
Derivatives designated as hedging instruments [Member] | Fair value hedges [Member]
Derivatives and Hedging Activities
Asset	75		82
Derivatives designated as hedging instruments [Member] | Fixed rate debt [Member] | Other assets [Member] | Fair value hedges [Member]
Derivatives and Hedging Activities
Asset	75		82
Derivatives not designated as hedging instruments [Member]
Derivatives and Hedging Activities
Asset	3,389		3,336
Liability	4,139		4,370
Derivatives not designated as hedging instruments [Member] | GMWB and GMAB [Member]
Derivatives and Hedging Activities
Asset	3,318		3,230
Liability	3,767		4,015
Derivatives not designated as hedging instruments [Member] | GMWB and GMAB [Member] | Interest rate contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Asset	1,512		1,484
Derivatives not designated as hedging instruments [Member] | GMWB and GMAB [Member] | Interest rate contracts [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Liability	1,208		1,672
Derivatives not designated as hedging instruments [Member] | GMWB and GMAB [Member] | Equity contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Asset	1,798		1,741
Derivatives not designated as hedging instruments [Member] | GMWB and GMAB [Member] | Equity contracts [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Liability	2,636		2,918
Derivatives not designated as hedging instruments [Member] | GMWB and GMAB [Member] | Credit contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Asset	4		3
Derivatives not designated as hedging instruments [Member] | GMWB and GMAB [Member] | Foreign exchange contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Asset	4		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
Liability	(77)	[1],[2]	(575)	[1],[2]
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
Liability	6		5
Derivatives not designated as hedging instruments [Member] | IUL [Member] | Equity contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Asset	28		27
Derivatives not designated as hedging instruments [Member] | IUL [Member] | Equity contracts [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Liability	7		13
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
Liability	202		125
Derivatives not designated as hedging instruments [Member] | Stock market certificates [Member] | Equity contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Asset	40		73
Derivatives not designated as hedging instruments [Member] | Stock market certificates [Member] | Equity contracts [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Liability	34		66
Derivatives not designated as hedging instruments [Member] | Stock market certificates embedded derivatives [Member] | Equity contracts [Member] | Customer deposits [Member]
Derivatives and Hedging Activities
Liability	6		7
Derivatives not designated as hedging instruments [Member] | Foreign currency [Member] | Foreign exchange contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Asset	2		2
Derivatives not designated as hedging instruments [Member] | Macro hedge program [Member] | Other contract [Member] | Other assets [Member]
Derivatives and Hedging Activities
Asset	1		4
Derivatives not designated as hedging instruments [Member] | Macro hedge program [Member] | Other contract [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Liability	117		139
Derivatives not designated as hedging instruments [Member] | Total other [Member]
Derivatives and Hedging Activities
Asset	71		106
Liability	$ 372		$ 355

[1] The fair value of the GMWB and GMAB embedded derivatives was a net asset at September 30, 2014 and December 31, 2013 and the amount is reported as a contra liability.

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