Offsetting Assets and Liabilities - Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Derivatives:
Gross Amounts of Recognized Liabilities	$ 3,211	$ 2,748
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Liabilities Presented in the Consolidated Balance Sheets	3,211	2,748
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(2,939)	(2,406)
Cash Collateral	(22)	(43)
Securities Collateral	(247)	(294)
Net Amount	3	5
Securities loaned
Gross Amounts of Recognized Liabilities	124	235
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Liabilities Presented in the Consolidated Balance Sheets	124	235
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(42)	(31)
Cash Collateral	0	0
Securities Collateral	(80)	(197)
Net Amount	2	7
Total
Gross Amounts of Recognized Liabilities	3,335	2,983
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Liabilities Presented in the Consolidated Balance Sheets	3,335	2,983
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(2,981)	(2,437)
Cash Collateral	(22)	(43)
Securities Collateral	(327)	(491)
Net Amount	5	12
OTC
Derivatives:
Gross Amounts of Recognized Liabilities	3,148	2,646
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Liabilities Presented in the Consolidated Balance Sheets	3,148	2,646
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(2,877)	(2,322)
Cash Collateral	(22)	(43)
Securities Collateral	(247)	(277)
Net Amount	2	4
OTC cleared
Derivatives:
Gross Amounts of Recognized Liabilities	13	9
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Liabilities Presented in the Consolidated Balance Sheets	13	9
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(13)	(9)
Cash Collateral	0	0
Securities Collateral	0	0
Net Amount	0	0
Exchange-traded
Derivatives:
Gross Amounts of Recognized Liabilities	50	93
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Liabilities Presented in the Consolidated Balance Sheets	50	93
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(49)	(75)
Cash Collateral	0	0
Securities Collateral	0	(17)
Net Amount	$ 1	$ 1