Derivatives and Hedge Accounting - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Credit derivatives:
Collateral posted	$ 362	$ 601
Collateral obtained from third parties for derivative transactions	222	595
Foreign currency translation gain (loss) adjustment related to net investment hedge relationships	(116)	86	$ (42)
Credit Risk Related Contingent Features
Credit derivatives:
Collateral posted	25	30
Additional collateral postings and termination payments	4
Aggregate fair value of net liability position	$ 25	$ 30