Related Party Debt - Schedule of Consolidated Related Party Debt Obligations (Details) - USD ($)									12 Months Ended
	Mar. 23, 2021	Mar. 16, 2021	Jun. 06, 2019	Jun. 04, 2019	Aug. 01, 2018	Jul. 31, 2018	Dec. 01, 2017	Mar. 01, 2017	Dec. 31, 2021	Dec. 31, 2020
Line Of Credit Facility [Line Items]
Debt instrument term	5 years
Outstanding Balance									$ 2,692,000,000	$ 2,692,000,000
Total Capacity									3,560,000,000	3,590,000,000
Available Capacity									866,000,000	896,000,000
2021 Ten Year Fixed Facility
Line Of Credit Facility [Line Items]
Debt instrument term	10 years	10 years
Minimum
Line Of Credit Facility [Line Items]
Unamortized debt issuance costs									$ (1,000,000)
Revolving Credit Facility | 2021 Ten Year Fixed Facility
Line Of Credit Facility [Line Items]
Debt instrument term		10 years							10 years
Total Capacity		$ 600,000,000
Revolving Credit Facility | Ten Year Fixed Facility
Line Of Credit Facility [Line Items]
Debt instrument term			10 years	10 years					10 years
Revolving Credit Facility | Seven Year Fixed Facility
Line Of Credit Facility [Line Items]
Debt instrument term						7 years			7 years
Total Capacity						$ 600,000,000
Revolving Credit Facility | Five Year Revolver due July 2023
Line Of Credit Facility [Line Items]
Debt instrument term					5 years				5 years
Total Capacity					$ 760,000,000
Revolving Credit Facility | Five Year Revolver due December 2022
Line Of Credit Facility [Line Items]
Debt instrument term							5 years		5 years
Revolving Credit Facility | Five Year Fixed Facility
Line Of Credit Facility [Line Items]
Debt instrument term	5 years							5 years	5 years
Current | Revolving Credit Facility
Line Of Credit Facility [Line Items]
Outstanding Balance									$ 400,000,000	0
Total Capacity									1,000,000,000	0
Available Capacity									600,000,000	0
Current | Revolving Credit Facility | Five Year Revolver due December 2022
Line Of Credit Facility [Line Items]
Outstanding Balance									400,000,000	0
Total Capacity									1,000,000,000	0
Available Capacity									600,000,000	0
Noncurrent
Line Of Credit Facility [Line Items]
Unamortized debt issuance costs									(2,000,000)	(2,000,000)
Noncurrent | Revolving Credit Facility
Line Of Credit Facility [Line Items]
Outstanding Balance									2,292,000,000	2,692,000,000
Total Capacity									2,560,000,000	3,590,000,000
Available Capacity									266,000,000	896,000,000
Noncurrent | Revolving Credit Facility | 2021 Ten Year Fixed Facility
Line Of Credit Facility [Line Items]
Outstanding Balance									600,000,000	0
Total Capacity									600,000,000	0
Available Capacity									0	0
Noncurrent | Revolving Credit Facility | Ten Year Fixed Facility
Line Of Credit Facility [Line Items]
Outstanding Balance									600,000,000	600,000,000
Total Capacity									600,000,000	600,000,000
Available Capacity									0	0
Noncurrent | Revolving Credit Facility | Seven Year Fixed Facility
Line Of Credit Facility [Line Items]
Outstanding Balance									600,000,000	600,000,000
Total Capacity									600,000,000	600,000,000
Available Capacity									0	0
Noncurrent | Revolving Credit Facility | Five Year Revolver due July 2023
Line Of Credit Facility [Line Items]
Outstanding Balance									494,000,000	494,000,000
Total Capacity									760,000,000	760,000,000
Available Capacity									266,000,000	266,000,000
Noncurrent | Revolving Credit Facility | Five Year Revolver due December 2022
Line Of Credit Facility [Line Items]
Outstanding Balance									0	400,000,000
Total Capacity									0	1,000,000,000
Available Capacity									0	600,000,000
Noncurrent | Revolving Credit Facility | Five Year Fixed Facility
Line Of Credit Facility [Line Items]
Outstanding Balance									0	600,000,000
Total Capacity								$ 600,000,000	0
Available Capacity									0	0
Noncurrent | Revolving Credit Facility | 2019 Zydeco Revolver
Line Of Credit Facility [Line Items]
Outstanding Balance									0	0
Total Capacity									0	30,000,000
Available Capacity									$ 0	$ 30,000,000