Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders, Ownership Percentage Distributed

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- Definition

Public Utilities, Natural Gas Transportation Pipeline, Miles

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 5A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121559654&loc=SL6759159-111685

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General - EEGH (Details) - Eastern Energy Gas Holdings, LLC [Member] - mi	1 Months Ended		3 Months Ended
	Nov. 30, 2020	Jul. 31, 2020	Mar. 31, 2021
Cove Point LNG, LP [Member]
Variable Interest Entity [Line Items]
Percentage interest distributed		25.00%
Cove Point LNG, LP [Member] \| Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations [Member] \| GT&S Transaction [Member]
Variable Interest Entity [Line Items]
Percentage interest distributed	50.00%
Iroquois Gas Transmission System L.P. [Member]
Variable Interest Entity [Line Items]
Variable interest entity, ownership percentage			50.00%
Variable Interest Entity, Primary Beneficiary [Member] \| General Partner [Member] \| Cove Point LNG, LP [Member]
Variable Interest Entity [Line Items]
Variable interest entity, ownership percentage			100.00%
Variable Interest Entity, Primary Beneficiary [Member] \| Limited Partner [Member] \| Cove Point LNG, LP [Member]
Variable Interest Entity [Line Items]
Variable interest entity, ownership percentage			25.00%
Variable Interest Entity, Primary Beneficiary [Member] \| Federal Energy Regulatory Commission \| Iroquois Gas Transmission System L.P. [Member]
Variable Interest Entity [Line Items]
Miles of interstate natural gas transportation pipeline			416