Contingent Liabilities and Commitments (Details) - USD ($) $ in Millions				1 Months Ended
	Sep. 21, 2022	Dec. 29, 2021	May 20, 2016	Jan. 31, 2020	Dec. 31, 2022
Loss Contingencies [Line Items]
Accrued environmental loss liabilities					$ 40
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]					Accrued Liabilities, Current
Capital Addition Purchase Commitments [Member]
Loss Contingencies [Line Items]
Commitments for construction and acquisition of property, plant, and equipment					$ 439
Gas & NGL Marketing Services
Loss Contingencies [Line Items]
Other Commitment					546
Former Alaska Refinery [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Awarded, Value				$ 86
Energy Transfer Merger [Member]
Loss Contingencies [Line Items]
Loss contingency, damages sought, value			$ 1,480
Litigation Settlement, Amount Awarded from Other Party	$ 602	$ 410
Gas Pipeline [Member]
Loss Contingencies [Line Items]
Accrued environmental loss liabilities					13
Natural Gas Underground Storage Facilities [Member]
Loss Contingencies [Line Items]
Accrued environmental loss liabilities					10
Former Operations [Member]
Loss Contingencies [Line Items]
Accrued environmental loss liabilities					17
Recoverable through rates [Member]
Loss Contingencies [Line Items]
Accrued environmental loss liabilities					$ 4