Derivatives - Financial Statement Presentation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Fair Value, Gross Liability	$ (1,034)	$ (476)
Derivative Liability, Fair Value, Gross Asset	1,236	772
Derivative Asset	334	309
Derivative Liability	(776)	(417)
Energy Related Derivative | Gain (Loss) on Derivative Instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax	(387)	(148)	$ (5)
Designated as Hedging Instrument | Energy Related Derivative | Gain (Loss) on Derivative Instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Gain (Loss) on Derivative, Net	0	(55)	(2)
Not Designated as Hedging Instrument [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Fair Value, Gross Asset	1,368	785
Derivative Liability, Fair Value, Gross Liability	(2,012)	(1,189)
Not Designated as Hedging Instrument [Member] | Energy Related Derivative | Gain (Loss) on Derivative Instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(91)	16	(3)
Unrealized Gain (Loss) on Derivatives	(296)	(109)	0
Not Designated as Hedging Instrument [Member] | Energy Related Derivative | Cost of Sales
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Gain (Loss) on Derivative, Net	16	2	1
Unrealized Gain (Loss) on Derivatives	47	0	$ 0
Other Current Liabilities | Not Designated as Hedging Instrument [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Fair Value, Gross Asset	1,099	619
Derivative Liability, Fair Value, Gross Liability	(1,278)	(760)
Regulatory liabilities, deferred income, and other [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Fair Value, Gross Asset	269	166
Derivative Liability, Fair Value, Gross Liability	$ (734)	$ (429)