Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Purchase Price Allocation
Purchase price allocation, gross		$ 1,500,000
Purchase price allocation, property, plant and equipment, estimated useful lIfe		40 years
Purchase price allocation, depreciation		$ 35,000
Purchase price allocation, remaining allocation		500,000
Reclassification [Line Items]
Operation and maintenance		413,882	$ 376,747	$ 432,786
Schedule of Equity Method Investments [Line Items]
Proceeds from Equity Method Investment, Distribution		0	0	4,908
Contributions to unconsolidated affiliates		0	0	12,250
Capitalized Interest Costs, Including Allowance for Funds Used During Construction [Abstract]
Allowance for funds used during construction, borrowed		5,000	7,700	10,500
Allowance for funds used during construction, equity		17,100	14,900	28,800
Accounts Receivable, Allowance for Credit Loss, Current		$ 6,222	0
Minimum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract		1 year
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract		30 years
Previously Reported [Member]
Reclassification [Line Items]
Cost of natural gas transportation			53,700	50,300
Revision of Prior Period, Reclassification, Adjustment [Member]
Reclassification [Line Items]
Operation and maintenance			$ 53,700	$ 50,300
Gathering facilities | Minimum [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Depreciation rates		0.00%	0.00%	0.00%
Gathering facilities | Maximum [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Depreciation rates		1.00%	1.00%	1.00%
Storage facilities | Minimum [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Depreciation rates		1.86%	1.86%	1.86%
Storage facilities | Maximum [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Depreciation rates		2.05%	2.05%	2.05%
Onshore transmission facilities | Minimum [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Depreciation rates		2.50%	2.50%	2.50%
Onshore transmission facilities | Maximum [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Depreciation rates		7.13%	7.13%	7.13%
Offshore transmission facilities
Public Utility, Property, Plant and Equipment [Line Items]
Depreciation rates		1.25%	1.25%	1.25%
Pine Needle LNG Company LLC [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage			35.00%
Cardinal Pipeline Company LLC [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage			45.00%
Equity Method Investment [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from Equity Method Investment, Distribution				$ 4,900
Contributions to unconsolidated affiliates	$ 12,300
Accounts Receivable, Other [Member]
Accounts Receivable, Allowance for Credit Loss, Current		$ 6,200