Debt and Interest Expense - Interest Expense Table (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Finance lease liabilities		$ (137)
Interest expense	[1]	(303,286)	$ (183,831)	$ (142,520)
Third Parties [Member]
Debt Instrument [Line Items]
Long-term and short-term debt		(315,872)	(200,454)	(143,400)
Amortization of debt issuance costs and commitment fees		(12,424)	(9,110)	(7,970)
Capitalized interest		26,980	32,479	9,074
Interest expense		(301,316)	(177,085)	(142,296)
Affiliates [Member]
Debt Instrument [Line Items]
Finance lease liabilities		(137)	0	0
Interest expense		(1,970)	(6,746)	(224)
Affiliates [Member] | Deferred Purchase Price Obligation - Anadarko [Member]
Debt Instrument [Line Items]
Interest expense - affiliate		0	0	(71)
Affiliates [Member] | APCWH Note Payable [Member]
Debt Instrument [Line Items]
Interest expense - affiliate		$ (1,833)	$ (6,746)	$ (153)

[1] Includes affiliate amounts of $(2.0) million, $(6.7) million, and $(0.2) million for the years ended December 31, 2019, 2018, and 2017, respectively. See Note 1 and Note 13.