Equity Method Investments - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Jan. 01, 2019	Mar. 31, 2018
Schedule of Equity Method Investments [Line Items]
Unamortized basis differences included in equity investments	$ 90,000,000		$ 92,000,000
Amortization expense (income)	2,000,000	$ 1,000,000
Equity method investments	912,000,000		926,000,000
Cumulative effect to total (deficit)/equity				$ 9,000,000
Poseidon
Schedule of Equity Method Investments [Line Items]
Equity method investments	0		0		$ 0
Investment, excess distribution	9,000,000	8,000,000
Mars
Schedule of Equity Method Investments [Line Items]
Equity method investments	160,000,000		161,000,000
Amberjack – Series A / Series B
Schedule of Equity Method Investments [Line Items]
Equity method investments	418,000,000		426,000,000.0
Amberjack – Series A / Series B | Accounting Standards Update 2014-09
Schedule of Equity Method Investments [Line Items]
Cumulative effect to total (deficit)/equity				$ 9,000,000
Crestwood Permian Basin LLC (“Permian Basin”)
Schedule of Equity Method Investments [Line Items]
Equity method investments	90,000,000		$ 91,000,000
Capital contribution	$ 0	$ 5,000,000