Derivative Instruments - Cumulative Fair Value Hedging Adjustments (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Commodity
Assets
Carrying amount of the hedged items	$ 26,000	$ 25,700
Long-term debt
Liabilities
Carrying amount of the hedged items	175,257	195,642
Cumulative amount of fair value hedging adjustments included in the carrying amount of hedged items:
Active hedging relationships	(11,879)	(1,999)
Discontinued hedging relationships	(3,313)	8,834
Total	(15,192)	6,835
Long-term debt | Not designated as hedges
Liabilities
Carrying amount of the hedged items	221	9,700
Beneficial interests issued by consolidated VIEs
Liabilities
Carrying amount of the hedged items	0	749
Cumulative amount of fair value hedging adjustments included in the carrying amount of hedged items:
Active hedging relationships	0	0
Discontinued hedging relationships	0	(1)
Total	0	(1)
Investment securities - AFS
Assets
Carrying amount of the hedged items	84,073	65,746
Cumulative amount of fair value hedging adjustments included in the carrying amount of hedged items:
Active hedging relationships	(4,149)	417
Discontinued hedging relationships	(1,542)	661
Total	(5,691)	1,078
Investment securities - AFS | Not designated as hedges
Assets
Carrying amount of the hedged items	$ 20,300	$ 14,000