Asset Acquisition, Natural Gas Capacity of Acquiree

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- Definition

Asset Acquisition, Percentage of Shares Acquired

+ References

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- Definition

Business Combination, Consideration to be Transferred

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- Definition

Natural Gas Transportation Capacity Agreement, Period

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- Definition

Payments For Asset Acquisitions, Net Of Cash Acquired

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- Definition

Pipeline Length Owned

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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.

+ References

No definition available.

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- Definition

For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
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-Paragraph 1
-Subparagraph (c)(3)
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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 45
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-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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No definition available.

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ACQUISITIONS AND DISPOSITIONS - ADDITIONAL INFORMATION (Details) $ in Thousands, DTH in Millions				1 Months Ended	6 Months Ended
	Jan. 13, 2020 USD ($) mi	Dec. 19, 2019	Oct. 11, 2019 USD ($) DTH	Nov. 30, 2017 USD ($)	Mar. 31, 2021 USD ($)	Mar. 31, 2020 USD ($)
Business Acquisition [Line Items]
Payments for asset acquisitions					$ 0	$ 523,647
Talen's Membership Interests In IEC \| Talen Generation, LLC
Business Acquisition [Line Items]
Pipeline length owned \| mi	84
Consideration to be transferred	$ 166,000
Cash paid related to acquisition	156,000			$ 10,000
Contingent consideration arrangements, range of outcomes, value, high	$ 23,000
Natural gas transportation capacity agreement, period		10 years
Leaf River Energy Center LLC \| NJR Pipeline
Business Acquisition [Line Items]
Percentage of voting interests acquired			100.00%
Payments for asset acquisitions			$ 367,500
Natural gas capacity of acquiree \| DTH			32.2
Minimum \| Talen's Membership Interests In IEC \| Talen Generation, LLC
Business Acquisition [Line Items]
PP&E useful life					5 years
Minimum \| Leaf River Energy Center LLC \| NJR Pipeline
Business Acquisition [Line Items]
PP&E useful life					5 years
Maximum \| Talen's Membership Interests In IEC \| Talen Generation, LLC
Business Acquisition [Line Items]
PP&E useful life					30 years
Maximum \| Leaf River Energy Center LLC \| NJR Pipeline
Business Acquisition [Line Items]
PP&E useful life					50 years