Derivatives and Hedging Activities (Balance Sheet) (Details) - USD ($) $ in Millions		Sep. 30, 2016	Dec. 31, 2015
Derivatives and Hedging Activities
Notional amount		$ 144,665	$ 143,479
Derivative Liability After Application Of Master Netting Arrangements And Cash Collateral Including Embedded Derivative Liabilities		2,400	1,600
Derivative liability	[1],[2]	5,885	4,300
Derivative asset	[3]	5,178	3,587
Fair value of derivative collateral		940	323
Fair Value of Securities Received as Collateral that Can be Resold or Repledged		670	193
Fair Value of Securities Received as Collateral that Have Been Resold or Repledged		19	0
GMWB and GMAB [Member]
Derivatives and Hedging Activities
Derivative liability		1,800	994
Derivative Liability, Fair Value, Gross Asset		73	143
Derivatives designated as hedging instruments [Member]
Derivatives and Hedging Activities
Notional amount		931	675
Derivatives designated as hedging instruments [Member] | Other assets [Member]
Derivatives and Hedging Activities
Derivative asset	[3]	57	58
Derivatives designated as hedging instruments [Member] | Interest rate contracts [Member]
Derivatives and Hedging Activities
Notional amount		675	675
Derivatives designated as hedging instruments [Member] | Interest rate contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Derivative asset	[3]	54	58
Derivatives designated as hedging instruments [Member] | Foreign exchange contracts [Member]
Derivatives and Hedging Activities
Notional amount		256
Derivatives designated as hedging instruments [Member] | Foreign exchange contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Derivative asset	[3]	3
Derivatives not designated as hedging instruments [Member]
Derivatives and Hedging Activities
Notional amount		143,734	142,804
Derivatives not designated as hedging instruments [Member] | Other assets [Member]
Derivatives and Hedging Activities
Derivative asset	[3]	5,121	3,529
Derivatives not designated as hedging instruments [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Derivative liability	[1],[2]	3,678	3,076
Derivatives not designated as hedging instruments [Member] | Interest rate contracts [Member]
Derivatives and Hedging Activities
Notional amount		75,028	63,798
Derivatives not designated as hedging instruments [Member] | Interest rate contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Derivative asset	[3]	3,593	1,882
Derivatives not designated as hedging instruments [Member] | Interest rate contracts [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Derivative liability	[1],[2]	1,663	969
Derivatives not designated as hedging instruments [Member] | Equity contracts [Member]
Derivatives and Hedging Activities
Notional amount		60,729	70,238
Derivatives not designated as hedging instruments [Member] | Equity contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Derivative asset	[3]	1,452	1,587
Derivatives not designated as hedging instruments [Member] | Equity contracts [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Derivative liability	[1],[2]	1,876	1,993
Derivatives not designated as hedging instruments [Member] | Credit contracts [Member]
Derivatives and Hedging Activities
Notional amount		1,073	600
Derivatives not designated as hedging instruments [Member] | Credit contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Derivative asset	[3]	1	2
Derivatives not designated as hedging instruments [Member] | Foreign exchange contracts [Member]
Derivatives and Hedging Activities
Notional amount		4,849	4,408
Derivatives not designated as hedging instruments [Member] | Foreign exchange contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Derivative asset	[3]	72	56
Derivatives not designated as hedging instruments [Member] | Foreign exchange contracts [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Derivative liability	[1],[2]	35	18
Derivatives not designated as hedging instruments [Member] | Other derivative contracts [Member]
Derivatives and Hedging Activities
Notional amount		2,055	3,760
Derivatives not designated as hedging instruments [Member] | Other derivative contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Derivative asset	[3]	3	2
Derivatives not designated as hedging instruments [Member] | Other derivative contracts [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Derivative liability	[1],[2]	104	96
Derivatives not designated as hedging instruments [Member] | GMWB and GMAB [Member] | Policyholder account balances, future policy benefits and claims [Member]
Derivatives and Hedging Activities
Derivative liability	[1],[2],[4]	1,756	851
Derivatives not designated as hedging instruments [Member] | IUL [Member] | Policyholder account balances, future policy benefits and claims [Member]
Derivatives and Hedging Activities
Derivative liability	[1],[2]	438	364
Derivatives not designated as hedging instruments [Member] | EIA embedded derivatives [Member] | Policyholder account balances, future policy benefits and claims [Member]
Derivatives and Hedging Activities
Derivative liability	[1],[2]	5	5
Derivatives not designated as hedging instruments [Member] | SMC [Member] | Customer deposits [Member]
Derivatives and Hedging Activities
Derivative liability	[1],[2]	8	4
Derivatives not designated as hedging instruments [Member] | Total embedded derivatives [Member]
Derivatives and Hedging Activities
Derivative liability	[1],[2]	$ 2,207	$ 1,224

[1] The fair value of freestanding derivative liabilities is included in Other liabilities on the Consolidated Balance Sheets. The fair value of GMWB and GMAB, IUL, and EIA embedded derivatives is included in Policyholder account balances, future policy benefits and claims on the Consolidated Balance Sheets. The fair value of the SMC embedded derivative liability is included in Customer deposits on the Consolidated Balance Sheets.

[2] 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 $2.4 billion and $1.6 billion at September 30, 2016 and December 31, 2015, 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.

[3] The fair value of freestanding derivative assets is included in Other assets on the Consolidated Balance Sheets.

[4] The fair value of the GMWB and GMAB embedded derivatives at September 30, 2016 included $1.8 billion of individual contracts in a liability position and $73 million of individual contracts in an asset position. The fair value of the GMWB and GMAB embedded derivatives at December 31, 2015 included $994 million of individual contracts in a liability position and $143 million of individual contracts in an asset position.