Offsetting Assets and Liabilities - Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Derivatives:
Gross Amounts of Recognized Liabilities	$ 3,883	$ 2,748
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Liabilities Presented in the Consolidated Balance Sheets	3,883	2,748
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(3,734)	(2,406)
Cash Collateral	(36)	(43)
Securities Collateral	(78)	(294)
Net Amount	35	5
Securities loaned
Gross Amounts of Recognized Liabilities	163	235
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Liabilities Presented in the Consolidated Balance Sheets	163	235
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(32)	(31)
Cash Collateral	0	0
Securities Collateral	(126)	(197)
Net Amount	5	7
Total
Gross Amounts of Recognized Liabilities	4,046	2,983
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Liabilities Presented in the Consolidated Balance Sheets	4,046	2,983
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(3,766)	(2,437)
Cash Collateral	(36)	(43)
Securities Collateral	(204)	(491)
Net Amount	40	12
OTC
Derivatives:
Gross Amounts of Recognized Liabilities	3,829	2,646
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Liabilities Presented in the Consolidated Balance Sheets	3,829	2,646
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(3,707)	(2,322)
Cash Collateral	(36)	(43)
Securities Collateral	(78)	(277)
Net Amount	8	4
OTC cleared
Derivatives:
Gross Amounts of Recognized Liabilities	35	9
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Liabilities Presented in the Consolidated Balance Sheets	35	9
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(9)	(9)
Cash Collateral	0	0
Securities Collateral	0	0
Net Amount	26	0
Exchange-traded
Derivatives:
Gross Amounts of Recognized Liabilities	19	93
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Liabilities Presented in the Consolidated Balance Sheets	19	93
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(18)	(75)
Cash Collateral	0	0
Securities Collateral	0	(17)
Net Amount	$ 1	$ 1