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Subsequent Events (Details)	2 Months Ended	12 Months Ended
	Mar. 04, 2021 windProject unitContingentPPA	Dec. 31, 2019 windProject
Subsequent Event [Line Items]
Number of wind projects		3
Subsequent Event | Texas Wind Farms
Subsequent Event [Line Items]
Number of wind projects	2
Equity interest	51.00%
Subsequent Event | Stella, Cranell and East Raymond Texas Coastal Wind Facilities
Subsequent Event [Line Items]
Equity interest	51.00%
Subsequent Event | Maverick
Subsequent Event [Line Items]
Number of Unit Contingent PPAs | unitContingentPPA	2

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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