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Subsequent Events	6 Months Ended
Subsequent Events	Jun. 30, 2020
Subsequent Events [Abstract]
Subsequent Events	17. Subsequent Events (PPL) On August 10, 2020, PPL announced that it is initiating a formal process to sell its U.K. utility business. PPL noted that there can be no assurance of any specific outcome, including whether the announcement will result in the completion of any potential transaction, the timing or terms thereof, the value or benefits that may be realized or the effect that any potential transaction will have on future financial results.