Schedule of Acquisitions of Solar Projects (Parenthetical) (Detail) - Acquisition of Solar Project Hardin I in Ohio - MW	1 Months Ended
Jan. 31, 2021	Dec. 31, 2020
Property Plant And Equipment [Line Items]
Capacity of project commenced commercial operations		97
Subsequent Event
Property Plant And Equipment [Line Items]
Capacity of project commenced commercial operations	53

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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