Plant Acquisition - Narrative (Details) - Effingham County Power - Natural Gas Processing Plant $ in Thousands		9 Months Ended
Jul. 08, 2021 USD ($) MW	Sep. 30, 2021
Plant Acquisition [Line Items]
Generating capacity of each nuclear unit (in megawatts) \| MW	511
Purchase price	$ 233,156
Acquisition costs	$ 1,382
Amortization period, regulatory asset		22 years

Represents the total nominally rated generating capacity per nuclear unit.

No definition available.

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- Definition

Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

+ References

No definition available.

+ Details

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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.

+ Details

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
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- Definition

Amortization period for the recovery of regulatory asset, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Details

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