Commitments and Contingencies - Legal, Environmental or Regulatory (Details)					1 Months Ended	9 Months Ended	12 Months Ended			92 Months Ended
	Dec. 31, 2022 USD ($) lawsuit	Nov. 01, 2022 USD ($)	Oct. 27, 2022 USD ($)	Oct. 14, 2020 USD ($)	May 31, 2015 bbl	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) lawsuit	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2022 USD ($) lawsuit	Apr. 25, 2019 USD ($)	Sep. 07, 2018 count
Line 901 Incident
Legal, Environmental or Regulatory Matters
Estimated size of release (in bbl) | bbl					2,934
Estimated size of release to reach Pacific Ocean (in bbl) | bbl					598
Aggregate total estimated costs	$ 740,000,000						$ 740,000,000			$ 740,000,000
Exceeded coverage limit under insurance program	240,000,000						240,000,000			240,000,000
Recoveries from insurance carriers										280,000,000
Total release costs probable of recovery	505,000,000						505,000,000			505,000,000
Coverage limit under insurance program	$ 500,000,000						500,000,000			$ 500,000,000
Significant Costs Related To Legal And Environmental Remediation Matters							95,000,000	$ 15,000,000	$ 0
Line 901 Incident | Civil Penalties | Judicial Ruling
Legal, Environmental or Regulatory Matters
Penalties or compensation paid				$ 24,000,000
Line 901 Incident | Compensation for Injuries to, Destruction of, Loss of Use of, Natural Resources | Judicial Ruling
Legal, Environmental or Regulatory Matters
Penalties or compensation paid				$ 22,325,000
Line 901 Incident | May 2016 Indictment
Legal, Environmental or Regulatory Matters
Number of felony charges found guilty | count												1
Number of misdemeanor charges found guilty | count												8
Number of misdemeanor charges found guilty, reporting | count												1
Number of misdemeanor charges found guilty, strict liability discharge | count												1
Number of misdemeanor charges found guilty, strict liability animal takings | count												6
Number of misdemeanor charges not guilty, strict liability animal takings | count												1
Line 901 Incident | May 2016 Indictment | Judicial Ruling
Legal, Environmental or Regulatory Matters
Fines or penalties assessed											$ 3,350,000
Line 901 Incident | May 2016 Indictment | Maximum | Judicial Ruling
Legal, Environmental or Regulatory Matters
Amount awarded to claimants by court							$ 150,000
Line 901 Incident | Class Action Lawsuits
Legal, Environmental or Regulatory Matters
Number of cases filed during the period | lawsuit										9
Recoveries from insurance carriers										$ 275,000,000
Line 901 Incident | Class Action Lawsuits | Pending Litigation
Legal, Environmental or Regulatory Matters
Number of proceedings pending | lawsuit	2						2			2
Line 901 Incident | Class Action Lawsuit Claim Of Damages | Settled Litigation
Legal, Environmental or Regulatory Matters
Litigation settlement amount agreed upon subject to approval						$ 230,000,000
Payments for legal settlements			$ 230,000,000
Line 901 Incident | Unitholder Derivative Lawsuits | Settled Litigation
Legal, Environmental or Regulatory Matters
Number of proceedings pending | lawsuit	1						1			1
Total amount collected from all insurers		$ 1,000,000
Claim for Reimbursement From Insurance
Legal, Environmental or Regulatory Matters
Recoveries from insurance carriers	$ 3,600,000
Receivable for remaining portion of release costs probable of recovery from insurance	225,000,000						$ 225,000,000			$ 225,000,000
Denial of Insurance Coverage
Legal, Environmental or Regulatory Matters
Receivable for remaining portion of release costs probable of recovery from insurance	185,000,000						185,000,000			185,000,000
Response to Request for Reimbursement Not Received
Legal, Environmental or Regulatory Matters
Receivable for remaining portion of release costs probable of recovery from insurance	40,000,000						40,000,000			40,000,000
Other long-term assets, net | Line 901 Incident
Legal, Environmental or Regulatory Matters
Receivable for remaining portion of release costs probable of recovery from insurance	225,000,000						225,000,000			225,000,000
Trade accounts payable and other current liabilities | Line 901 Incident
Legal, Environmental or Regulatory Matters
Remaining undiscounted liability	105,000,000						105,000,000			105,000,000
Excluding Line 901 Incident
Legal, Environmental or Regulatory Matters
Estimated undiscounted reserve for environmental liabilities	55,000,000						55,000,000	57,000,000		55,000,000
Estimated undiscounted reserve for environmental liabilities, short-term	$ 10,000,000						$ 10,000,000	$ 11,000,000		$ 10,000,000
Environmental Loss Contingency, Current, Statement of Financial Position [Extensible Enumeration]	Other current liabilities						Other current liabilities	Other current liabilities		Other current liabilities
Estimated undiscounted reserve for environmental liabilities, long-term	$ 45,000,000						$ 45,000,000	$ 46,000,000		$ 45,000,000
Environmental Loss Contingency, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other long-term liabilities and deferred credits						Other long-term liabilities and deferred credits	Other long-term liabilities and deferred credits		Other long-term liabilities and deferred credits
Amounts probable of recovery under insurance and from third parties under indemnification agreements	$ 4,000,000						$ 4,000,000	$ 11,000,000		$ 4,000,000
Excluding Line 901 Incident | Other long-term assets, net
Legal, Environmental or Regulatory Matters
Amounts probable of recovery under insurance and from third parties under indemnification agreements	$ 1,000,000						$ 1,000,000	$ 1,000,000		$ 1,000,000