Other Non-Current Assets - Equity Method Investments (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) mi	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Schedule of Equity Method Investments [Line Items]
Equity method investments	$ 56	$ 81
Midship Holdings LLC [Member]
Schedule of Equity Method Investments [Line Items]
Length of Natural Gas Pipeline | mi	200
Equity Method Investment, Other than Temporary Impairment	$ 37	129	$ 87
Equity method investments	$ 56	$ 80