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Equity
3 Months Ended
Mar. 31, 2022
Subsidiaries [Member]  
Stockholders' Equity Note Disclosure Shareholder's Equity
Capital Contribution and Returns of Capital
During the three months ended March 31, 2022, AES Ohio made return of capital payments to DPL of $9.0 million.

During the three months ended March 31, 2021,
AES Ohio made return of capital payments, which were declared in 2020, to DPL of $10.0 million.