Consolidated Balance Sheets - PECO (Parentheticals) - USD ($) shares in Millions, $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Accumulated depreciation and amortization	$ 17,251	$ 15,930
Common Stock, No Par Value	$ 0	$ 0
Common stock, shares authorized (in shares)	2,000	2,000
Common stock, shares, outstanding (in shares)	999	994
PECO Energy Co
Accumulated depreciation and amortization	$ 4,097	$ 4,078
Common Stock, No Par Value	$ 0	$ 0
Common stock, shares authorized (in shares)	500	500
Common stock, shares, outstanding (in shares)	170	170