Offsetting Assets and Liabilities - Assets (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Derivatives:
Gross Amounts of Recognized Assets	$ 5,245	$ 3,020
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Assets Presented in the Consolidated Balance Sheets	5,245	3,020
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(3,734)	(2,406)
Cash Collateral	(1,114)	(568)
Securities Collateral	(357)	(5)
Net Amount	40	41
Securities borrowed
Gross Amounts of Recognized Assets	146	199
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Assets Presented in the Consolidated Balance Sheets	146	199
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(32)	(31)
Cash Collateral	0	0
Securities Collateral	(111)	(164)
Net Amount	3	4
Total
Gross Amounts of Recognized Assets	5,391	3,219
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Assets Presented in the Consolidated Balance Sheets	5,391	3,219
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(3,766)	(2,437)
Cash Collateral	(1,114)	(568)
Securities Collateral	(468)	(169)
Net Amount	43	45
OTC
Derivatives:
Gross Amounts of Recognized Assets	5,197	2,900
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Assets Presented in the Consolidated Balance Sheets	5,197	2,900
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(3,707)	(2,322)
Cash Collateral	(1,114)	(568)
Securities Collateral	(357)	(5)
Net Amount	19	5
OTC cleared
Derivatives:
Gross Amounts of Recognized Assets	9	23
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Assets Presented in the Consolidated Balance Sheets	9	23
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(9)	(9)
Cash Collateral	0	0
Securities Collateral	0	0
Net Amount	0	14
Exchange-traded
Derivatives:
Gross Amounts of Recognized Assets	39	97
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Assets Presented in the Consolidated Balance Sheets	39	97
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(18)	(75)
Cash Collateral	0	0
Securities Collateral	0	0
Net Amount	$ 21	$ 22