Offsetting Assets and Liabilities - Assets (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Derivatives:
Gross Amounts of Recognized Assets	$ 4,292	$ 3,020
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Assets Presented in the Consolidated Balance Sheets	4,292	3,020
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(2,939)	(2,406)
Cash Collateral	(1,083)	(568)
Securities Collateral	(199)	(5)
Net Amount	71	41
Securities borrowed
Gross Amounts of Recognized Assets	119	199
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Assets Presented in the Consolidated Balance Sheets	119	199
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(42)	(31)
Cash Collateral	0	0
Securities Collateral	(75)	(164)
Net Amount	2	4
Total
Gross Amounts of Recognized Assets	4,411	3,219
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Assets Presented in the Consolidated Balance Sheets	4,411	3,219
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(2,981)	(2,437)
Cash Collateral	(1,083)	(568)
Securities Collateral	(274)	(169)
Net Amount	73	45
OTC
Derivatives:
Gross Amounts of Recognized Assets	4,188	2,900
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Assets Presented in the Consolidated Balance Sheets	4,188	2,900
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(2,877)	(2,322)
Cash Collateral	(1,083)	(568)
Securities Collateral	(199)	(5)
Net Amount	29	5
OTC cleared
Derivatives:
Gross Amounts of Recognized Assets	37	23
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Assets Presented in the Consolidated Balance Sheets	37	23
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(13)	(9)
Cash Collateral	0	0
Securities Collateral	0	0
Net Amount	24	14
Exchange-traded
Derivatives:
Gross Amounts of Recognized Assets	67	97
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Amounts of Assets Presented in the Consolidated Balance Sheets	67	97
Gross Amounts Not Offset in the Consolidated Balance Sheets
Financial Instruments	(49)	(75)
Cash Collateral	0	0
Securities Collateral	0	0
Net Amount	$ 18	$ 22