Financial Derivatives (Derivative Assets and Liabilities Offsetting) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Derivative Asset, Fair Value, Amount Offset Against Collateral [Abstract]
Gross Fair Value	$ 3,768	$ 5,152
Fair Value Offset Amount	1,523	928
Cash Collateral	714	604
Net Fair Value	1,531	3,620
Securities Collateral Held /Pledged Under Master Netting Agreements	34	300
Net Amounts	1,497	3,320
Derivative Liability, Fair Value, Amount Offset Against Collateral [Abstract]
Gross Fair Value	7,618	3,570
Fair Value Offset Amount	1,523	928
Cash Collateral	1,571	1,657
Net Fair Value	4,524	985
Securities Collateral Held /Pledged Under Master Netting Agreements	82
Net Amounts	4,442	985
Commodity contracts
Derivative Asset, Fair Value, Amount Offset Against Collateral [Abstract]
Gross Fair Value	1,208	1,363
Fair Value Offset Amount	335	299
Cash Collateral	2	1
Net Fair Value	871	1,063
Net Amounts	871	1,063
Derivative Liability, Fair Value, Amount Offset Against Collateral [Abstract]
Gross Fair Value	1,269	1,373
Fair Value Offset Amount	679	291
Cash Collateral	520	784
Net Fair Value	70	298
Securities Collateral Held /Pledged Under Master Netting Agreements	4
Net Amounts	66	298
Foreign exchange and other contracts
Derivative Asset, Fair Value, Amount Offset Against Collateral [Abstract]
Gross Fair Value	437	208
Fair Value Offset Amount	214	96
Cash Collateral	82	10
Net Fair Value	141	102
Net Amounts	141	102
Derivative Liability, Fair Value, Amount Offset Against Collateral [Abstract]
Gross Fair Value	520	542
Fair Value Offset Amount	219	68
Cash Collateral	10	97
Net Fair Value	291	377
Net Amounts	291	377
Over-the-counter cleared | Interest rate contracts:
Derivative Asset, Fair Value, Amount Offset Against Collateral [Abstract]
Gross Fair Value	23	20
Net Fair Value	23	20
Net Amounts	23	20
Derivative Liability, Fair Value, Amount Offset Against Collateral [Abstract]
Gross Fair Value	28	12
Net Fair Value	28	12
Net Amounts	28	12
Over-the-counter | Interest rate contracts:
Derivative Asset, Fair Value, Amount Offset Against Collateral [Abstract]
Gross Fair Value	2,100	3,561
Fair Value Offset Amount	974	533
Cash Collateral	630	593
Net Fair Value	496	2,435
Securities Collateral Held /Pledged Under Master Netting Agreements	34	300
Net Amounts	462	2,135
Derivative Liability, Fair Value, Amount Offset Against Collateral [Abstract]
Gross Fair Value	5,801	1,643
Fair Value Offset Amount	625	569
Cash Collateral	1,041	776
Net Fair Value	4,135	298
Securities Collateral Held /Pledged Under Master Netting Agreements	78
Net Amounts	$ 4,057	$ 298