Derivatives and Hedging Activities (Balance Sheet) (Details) - USD ($) $ in Millions		Dec. 31, 2019	Dec. 31, 2018
Derivatives and Hedging Activities
Notional amount		$ 125,200	$ 119,220
Gross fair value of assets	[1]	4,361	2,574
Gross fair value of liabilities	[2],[3]	5,229	3,610
Derivative liability after application of master netting arrangements and cash collateral including embedded derivative liabilities		2,300	1,400
Fair value of investment securities received as collateral		84	28
Fair value of investment securities received as collateral that can be repledged		84	28
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		218	318
Gross fair value of liabilities		981	646
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]	763	328
IUL embedded derivatives [Member] | Policyholder account balances, future policy benefits and claims [Member]
Derivatives and Hedging Activities
Gross fair value of liabilities	[2],[3]	881	628
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]	46	17
SMC embedded derivatives [Member] | Customer deposits [Member]
Derivatives and Hedging Activities
Gross fair value of liabilities	[2],[3]	14	6
Total embedded derivatives [Member]
Derivatives and Hedging Activities
Gross fair value of assets	[1]	0	0
Gross fair value of liabilities	[2],[3]	1,704	979
Designated as Hedging Instruments [Member]
Derivatives and Hedging Activities
Notional amount		468	778
Designated as Hedging Instruments [Member] | Other assets [Member]
Derivatives and Hedging Activities
Gross fair value of assets	[1]	3	8
Designated as Hedging Instruments [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Gross fair value of liabilities	[2],[3]	3	0
Designated as Hedging Instruments [Member] | Interest rate contracts [Member]
Derivatives and Hedging Activities
Notional amount		375	675
Designated as Hedging Instruments [Member] | Interest rate contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Gross fair value of assets	[1]	3	7
Designated as Hedging Instruments [Member] | Foreign exchange contracts [Member]
Derivatives and Hedging Activities
Notional amount		93	103
Designated as Hedging Instruments [Member] | Foreign exchange contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Gross fair value of assets	[1]	0	1
Designated as Hedging Instruments [Member] | Foreign exchange contracts [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Gross fair value of liabilities	[2],[3]	3	0
Derivatives not designated as hedging instruments [Member]
Derivatives and Hedging Activities
Notional amount		124,732	118,442
Derivatives not designated as hedging instruments [Member] | Other assets [Member]
Derivatives and Hedging Activities
Gross fair value of assets	[1]	4,358	2,566
Derivatives not designated as hedging instruments [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Gross fair value of liabilities	[2],[3]	3,522	2,631
Derivatives not designated as hedging instruments [Member] | Interest rate contracts [Member]
Derivatives and Hedging Activities
Notional amount		57,979	58,244
Derivatives not designated as hedging instruments [Member] | Interest rate contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Gross fair value of assets	[1]	1,452	789
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]	418	424
Derivatives not designated as hedging instruments [Member] | Equity contracts [Member]
Derivatives and Hedging Activities
Notional amount		61,921	54,079
Derivatives not designated as hedging instruments [Member] | Equity contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Gross fair value of assets	[1]	2,884	1,718
Derivatives not designated as hedging instruments [Member] | Equity contracts [Member] | Other liabilities [Member]
Derivatives and Hedging Activities
Gross fair value of liabilities	[2],[3]	3,098	2,154
Derivatives not designated as hedging instruments [Member] | Credit contracts [Member]
Derivatives and Hedging Activities
Notional amount		1,419	1,209
Derivatives not designated as hedging instruments [Member] | Credit contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Gross fair value of assets	[1]	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	18
Derivatives not designated as hedging instruments [Member] | Foreign exchange contracts [Member]
Derivatives and Hedging Activities
Notional amount		3,412	4,908
Derivatives not designated as hedging instruments [Member] | Foreign exchange contracts [Member] | Other assets [Member]
Derivatives and Hedging Activities
Gross fair value of assets	[1]	18	59
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]	6	35
Derivatives not designated as hedging instruments [Member] | Other contracts [Member]
Derivatives and Hedging Activities
Notional amount		$ 1	$ 2

[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, and indexed 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 $2.3 billion and $1.4 billion as of December 31, 2019 and 2018, respectively. See Note 16 for additional information related to master netting arrangements and cash collateral. See Note 5 for information about derivatives held by consolidated VIEs.

[4] 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. The fair value of the GMWB and GMAB embedded derivatives as of December 31, 2018 included $646 million of individual contracts in a liability position and $318 million of individual contracts in an asset position.