Derivative Assets And Liabilities Derivative Assets and Lianilities (Offsetting Agreements Netting Table) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Asset Derivatives	$ 263	$ 616
Derivative Liabilities	(293)	(464)
Derivative Asset, Fair Value, Amount Offset Against Collateral	(42)	(72)
Derivative Liability, Fair Value, Amount Offset Against Collateral	42	72
Derivative Asset, Collateral, Obligation to Return Cash, Offset	(204)	(368)
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	204	368
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	17	176
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	47	24
Without offsetting agreements [Member]
Asset Derivatives	0	6
Derivative Liabilities	0	(4)
OTC Contracts [Member]
Asset Derivatives	51	132
Derivative Liabilities	(57)	(80)
Broker cleared derivative contracts [Member]
Asset Derivatives	212	478
Derivative Liabilities	$ (236)	$ (380)

Amount of obligation to return cash collateral under master netting arrangements offset against derivative assets.

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