Accounting for Derivative Instruments and Hedging Activities - Fair Value Within the Derivative Instrument Valuation (Details) - Not Designated as Hedging Instrument - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Derivative Assets	$ 7,140	$ 821
Derivative Liabilities	4,799	884
Foreign exchange contracts - current
Derivative [Line Items]
Derivative Assets	0	0
Derivative Liabilities	1	0
Foreign exchange contracts - long-term
Derivative [Line Items]
Derivative Assets	1	0
Derivative Liabilities	0	0
Commodity contracts- current
Derivative [Line Items]
Derivative Assets	4,613	560
Derivative Liabilities	3,386	499
Commodity contracts- long-term
Derivative [Line Items]
Derivative Assets	2,526	261
Derivative Liabilities	$ 1,412	$ 385