Derivative Instruments and Hedging Activities - Fair Value Asset/(Liability) of Credit Protection Sold (Details) - Credit Protection Sold - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Credit Derivatives
Fair Value Asset (Liability)	$ (6,062)	$ 1,798
CDS
Credit Derivatives
Fair Value Asset (Liability)	(6,060)	1,801
Single-name CDS
Credit Derivatives
Fair Value Asset (Liability)	(1,741)	1,058
Single-name CDS | Investment grade
Credit Derivatives
Fair Value Asset (Liability)	145	1,428
Single-name CDS | Non-investment grade
Credit Derivatives
Fair Value Asset (Liability)	(1,886)	(370)
Index and basket CDS
Credit Derivatives
Fair Value Asset (Liability)	(4,319)	743
Index and basket CDS | Investment grade
Credit Derivatives
Fair Value Asset (Liability)	(194)	1,393
Index and basket CDS | Non-investment grade
Credit Derivatives
Fair Value Asset (Liability)	(4,125)	(650)
Other credit contracts
Credit Derivatives
Fair Value Asset (Liability)	$ (2)	$ (3)