Offsetting Assets and Liabilities - Assets (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Derivatives:
Gross Amounts of Recognized Assets	$ 7,037	$ 5,245
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Assets Presented in the Consolidated Balance Sheets	7,037	5,245
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(4,844)	(3,734)
Cash Collateral	(1,591)	(1,114)
Securities Collateral	(487)	(357)
Net Amount	115	40
Securities borrowed
Gross Amounts of Recognized Assets	281	146
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Assets Presented in the Consolidated Balance Sheets	281	146
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(27)	(32)
Cash Collateral	0	0
Securities Collateral	(249)	(111)
Net Amount	5	3
Total
Gross Amounts of Recognized Assets	7,318	5,391
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Assets Presented in the Consolidated Balance Sheets	7,318	5,391
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(4,871)	(3,766)
Cash Collateral	(1,591)	(1,114)
Securities Collateral	(736)	(468)
Net Amount	120	43
OTC
Derivatives:
Gross Amounts of Recognized Assets	6,985	5,197
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Assets Presented in the Consolidated Balance Sheets	6,985	5,197
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(4,833)	(3,707)
Cash Collateral	(1,591)	(1,114)
Securities Collateral	(487)	(357)
Net Amount	74	19
OTC cleared
Derivatives:
Gross Amounts of Recognized Assets	5	9
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Assets Presented in the Consolidated Balance Sheets	5	9
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(4)	(9)
Cash Collateral	0	0
Securities Collateral	0	0
Net Amount	1	0
Exchange-traded
Derivatives:
Gross Amounts of Recognized Assets	47	39
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Assets Presented in the Consolidated Balance Sheets	47	39
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(7)	(18)
Cash Collateral	0	0
Securities Collateral	0	0
Net Amount	$ 40	$ 21