Equity Method Investments - Summary of Equity Method Investments (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Schedule of Equity Method Investments [Line Items]
Total Equity Method Investments	$ 1,066	$ 286
Difference between the carrying value of an equity method investment and the underlying net assets of the investee	$ 42
Eastern Mediterranean Pipeline B.V.
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	25.00%
Total Equity Method Investments	$ 189	0
Atlantic Methanol Production Company, LLC and Affiliates
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	45.00%
Total Equity Method Investments	$ 160	146
Alba Plant LLC
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	28.00%
Total Equity Method Investments	$ 56	58
EPIC Y-Grade, LP
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	15.00%
Total Equity Method Investments	$ 166	0
EPIC Crude Holdings, LP
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	30.00%
Total Equity Method Investments	$ 339	0
Delaware Crossing LLC
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	50.00%
Total Equity Method Investments	$ 69	0
Advantage Pipeline, L.L.C.
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	50.00%
Total Equity Method Investments	$ 77	73
Other
Schedule of Equity Method Investments [Line Items]
Total Equity Method Investments	$ 10	$ 9