Derivatives and Hedging Activities (Balance Sheet) (Details) - USD ($) $ in Millions		Mar. 31, 2020	Dec. 31, 2019
Derivatives and Hedging Activities
Notional amount		$ 132,850	$ 125,200
Derivative liability after application of master netting arrangements and cash collateral including embedded derivative liabilities		4,500	2,300
Gross fair value of assets	[1]	5,707	4,361
Gross fair value of liabilities	[2],[3]	7,529	5,229
Fair value of investment securities received as collateral		296	84
Fair value of investment securities received as collateral that can be repledged		296	84
Fair value of investment securities received as collateral that were repledged		0	0
GMWB and GMAB embedded derivatives [Member]
Derivatives and Hedging Activities
Gross fair value of assets		12	218
Gross fair value of liabilities		3,300	981
GMWB and GMAB embedded derivatives [Member] | Policyholder account balances, future policy benefits and claims [Member]
Derivatives and Hedging Activities
Gross fair value of liabilities	[2],[3],[4]	3,276	763
IUL embedded derivatives [Member] | Policyholder account balances, future policy benefits and claims [Member]
Derivatives and Hedging Activities
Gross fair value of liabilities	[2],[3]	725	881
Fixed deferred indexed annuity embedded derivatives [Member] | Policyholder account balances, future policy benefits and claims [Member]
Derivatives and Hedging Activities
Gross fair value of liabilities	[2],[3]	35	46
Structured annuity embedded derivatives [Member] | Policyholder account balances, future policy benefits and claims [Member]
Derivatives and Hedging Activities
Gross fair value of liabilities	[2],[3]	(9)
SMC embedded derivatives [Member] | Customer deposits [Member]
Derivatives and Hedging Activities
Gross fair value of liabilities	[2],[3]	5	14
Total embedded derivatives [Member]
Derivatives and Hedging Activities
Gross fair value of liabilities	[2],[3]	4,032	1,704
Designated as Hedging Instrument [Member]
Derivatives and Hedging Activities
Notional amount		65	468
Designated as Hedging Instrument [Member] | Other assets [Member]
Derivatives and Hedging Activities
Gross fair value of assets	[1]	3	3
Designated as Hedging Instrument [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Gross fair value of liabilities	[2],[3]	0	3
Designated as Hedging Instrument [Member] | Interest rate contracts [Member]
Derivatives and Hedging Activities
Notional amount		0	375
Designated as Hedging Instrument [Member] | Interest rate contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Gross fair value of assets	[1]	0	3
Designated as Hedging Instrument [Member] | Foreign exchange contracts [Member]
Derivatives and Hedging Activities
Notional amount		65	93
Designated as Hedging Instrument [Member] | Foreign exchange contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Gross fair value of assets	[1]	3	0
Designated as Hedging Instrument [Member] | Foreign exchange contracts [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Gross fair value of liabilities	[2],[3]		3
Derivatives not designated as hedging instruments [Member]
Derivatives and Hedging Activities
Notional amount		132,785	124,732
Derivatives not designated as hedging instruments [Member] | Other assets [Member]
Derivatives and Hedging Activities
Gross fair value of assets	[1]	5,704	4,358
Derivatives not designated as hedging instruments [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Gross fair value of liabilities	[2],[3]	3,497	3,522
Derivatives not designated as hedging instruments [Member] | Interest rate contracts [Member]
Derivatives and Hedging Activities
Notional amount		69,238	57,979
Derivatives not designated as hedging instruments [Member] | Interest rate contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Gross fair value of assets	[1]	3,097	1,452
Derivatives not designated as hedging instruments [Member] | Interest rate contracts [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Gross fair value of liabilities	[2],[3]	1,238	418
Derivatives not designated as hedging instruments [Member] | Equity contracts [Member]
Derivatives and Hedging Activities
Notional amount		57,452	61,921
Derivatives not designated as hedging instruments [Member] | Equity contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Gross fair value of assets	[1]	2,555	2,884
Derivatives not designated as hedging instruments [Member] | Equity contracts [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Gross fair value of liabilities	[2],[3]	2,240	3,098
Derivatives not designated as hedging instruments [Member] | Credit contracts [Member]
Derivatives and Hedging Activities
Notional amount		1,681	1,419
Derivatives not designated as hedging instruments [Member] | Credit contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Gross fair value of assets	[1]	13	4
Derivatives not designated as hedging instruments [Member] | Credit contracts [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Gross fair value of liabilities	[2],[3]	0	0
Derivatives not designated as hedging instruments [Member] | Foreign exchange contracts [Member]
Derivatives and Hedging Activities
Notional amount		4,414	3,412
Derivatives not designated as hedging instruments [Member] | Foreign exchange contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Gross fair value of assets	[1]	39	18
Derivatives not designated as hedging instruments [Member] | Foreign exchange contracts [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Gross fair value of liabilities	[2],[3]	19	6
Derivatives not designated as hedging instruments [Member] | Other contracts [Member]
Derivatives and Hedging Activities
Notional amount		$ 0	$ 1

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

[2] 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, indexed annuity and structured annuity 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.

[3] 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 $4.5 billion and $2.3 billion as of March 31, 2020 and December 31, 2019, respectively. See Note 13 for additional information related to master netting arrangements and cash collateral.

[4] The fair value of the GMWB and GMAB embedded derivatives as of March 31, 2020 included $3.3 billion of individual contracts in a liability position and $12 million of individual contracts in an asset position. The fair value of the GMWB and GMAB embedded derivatives as of December 31, 2019 included $981 million of individual contracts in a liability position and $218 million of individual contracts in an asset position.