Notional Amounts (Details) $ in Millions	Mar. 31, 2022 USD ($) Boe MWh	Dec. 31, 2021 USD ($) Boe MWh
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	$ 3,000	$ 3,000
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	7	36
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	6,502	5,300
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	$ 13,492	$ 8,234
Commodity Contract Hydrocarbons | Designated as Hedging Instrument [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Nonmonetary Notional Amount | Boe	8,500,000	9,700,000
Commodity Contract Hydrocarbons | Not Designated as Hedging Instrument [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Nonmonetary Notional Amount | Boe	700,000	100,000
Commodity Contract Power | Not Designated as Hedging Instrument [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Nonmonetary Notional Amount | MWh	0	3,300