Derivative Instruments and Hedging Activities - Offsetting Assets (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Derivative assets
Gross Amounts	$ 2,675	$ 3,098
Financial Instruments	(433)	(759)
Cash Collateral Received	(572)	(375)
Net Amounts as Recognized	1,670	1,964
Securities Collateral Held Under Master Netting Agreements	(22)	(96)
Net Exposure	$ 1,648	$ 1,868