Acquisitions and Other Transactions - May 2021 Transaction and Auger Divestiture (Details) - USD ($) $ in Millions				12 Months Ended
	May 01, 2021	Apr. 29, 2021	Jan. 25, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Apr. 30, 2021
Asset Acquisition [Line Items]
Payments to acquire productive assets				$ 11	$ 27	$ 38
Impairment of fixed assets					$ 0	$ 0
Auger Pipeline
Asset Acquisition [Line Items]
Impairment of fixed assets			$ 3
Cash consideration received		$ 2
Zydeco Pipeline Company LLC (“Zydeco”)
Asset Acquisition [Line Items]
Ownership				100.00%
Triton West LLC (“Triton”)
Asset Acquisition [Line Items]
Ownership				100.00%
Zydeco Pipeline Company LLC (“Zydeco”) | Zydeco Pipeline Company LLC (“Zydeco”)
Asset Acquisition [Line Items]
Ownership							92.50%
Zydeco Pipeline Company LLC (“Zydeco”) | Zydeco Pipeline Company LLC (“Zydeco”) | Shell Pipeline Company L P
Asset Acquisition [Line Items]
Ownership percentage transferred	7.50%
Zydeco Pipeline Company LLC (“Zydeco”) | Triton West LLC (“Triton”) | Shell Pipeline Company L P
Asset Acquisition [Line Items]
Payments to acquire productive assets	$ 10
Ownership percentage transferred	7.50%