Derivatives and Hedge Accounting - Notional amounts and fair values of derivative instruments (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Gross Derivative Assets
Notional Amount	$ 103,806	$ 142,384
Fair Value	4,534	7,267
Counterparty netting	(3,359)	(5,785)
Cash Collateral	(831)	(798)
Total derivative assets	344	684
Gross Derivative Liabilities
Notional Amount	35,590	71,538
Fair Value	3,546	6,013
Counterparty netting	(3,359)	(5,785)
Cash Collateral	(104)	(37)
Total derivative liabilities on consolidated balance sheet	83	191
Bifurcated embedded derivatives assets, fair value	4	0
Bifurcated embedded derivative liabilities, fair value	7,200	17,700
Derivatives designated as hedging instruments \| Interest rate contracts
Gross Derivative Assets
Notional Amount	293	352
Fair Value	224	274
Gross Derivative Liabilities
Notional Amount	1,806	980
Fair Value	84	14
Derivatives designated as hedging instruments \| Foreign exchange contracts
Gross Derivative Assets
Notional Amount	5,561	4,058
Fair Value	993	262
Gross Derivative Liabilities
Notional Amount	304	2,861
Fair Value	3	55
Derivatives not designated as hedging instruments \| Interest rate contracts
Gross Derivative Assets
Notional Amount	19,026	28,056
Fair Value	1,478	1,637
Gross Derivative Liabilities
Notional Amount	23,708	23,219
Fair Value	3,114	1,562
Derivatives not designated as hedging instruments \| Foreign exchange contracts
Gross Derivative Assets
Notional Amount	8,658	4,047
Fair Value	1,269	410
Gross Derivative Liabilities
Notional Amount	1,143	5,413
Fair Value	261	311
Derivatives not designated as hedging instruments \| Equity contracts
Gross Derivative Assets
Notional Amount	24,435	60,192
Fair Value	554	4,670
Gross Derivative Liabilities
Notional Amount	8,584	38,932
Fair Value	84	4,071
Derivatives not designated as hedging instruments \| Credit contracts
Gross Derivative Assets
Notional Amount	0	1,840
Fair Value	0	1
Gross Derivative Liabilities
Notional Amount	0	0
Fair Value	0	0
Derivatives not designated as hedging instruments \| Other contracts
Gross Derivative Assets
Notional Amount	45,833	43,839
Fair Value	16	13
Gross Derivative Liabilities
Notional Amount	45	133
Fair Value	$ 0	$ 0

Amount of obligation to return cash collateral under master netting arrangements offset against derivative assets.

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