v3.25.2
Accounts Receivable - Allowance for Credit Losses Rollforward (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Current period provision for expected credit losses     $ 137 $ 93
Commonwealth Edison Co        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Current period provision for expected credit losses     23 8
PECO Energy Co        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Current period provision for expected credit losses     50 47
Baltimore Gas and Electric Company        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Current period provision for expected credit losses     17 11
Pepco Holdings LLC        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Current period provision for expected credit losses     47 27
Potomac Electric Power Company        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Current period provision for expected credit losses     19 16
Delmarva Power and Light Company        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Current period provision for expected credit losses     11 3
Atlantic City Electric Company        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Current period provision for expected credit losses     17 7
Customer accounts receivable        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Beginning balance $ 486 $ 346 406 317
Current period provision for expected credit losses 9 55 142 135
Writeoffs, net of recoveries 30 29 83 80
Ending balance 465 372 465 372
Customer accounts receivable | Commonwealth Edison Co        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Beginning balance 125 82 109 69
Current period provision for expected credit losses (4) 38 29 60
Writeoffs, net of recoveries   8 16 17
Recoveries (1)      
Ending balance 122 112 122 112
Customer accounts receivable | PECO Energy Co        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Beginning balance 160 107 133 95
Current period provision for expected credit losses 5 11 46 34
Writeoffs, net of recoveries 11 6 25 17
Ending balance 154 112 154 112
Customer accounts receivable | Baltimore Gas and Electric Company        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Beginning balance 72 52 56 46
Current period provision for expected credit losses 3 (1) 26 14
Writeoffs, net of recoveries 9 6 16 15
Ending balance 66 45 66 45
Customer accounts receivable | Pepco Holdings LLC        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Beginning balance 129 105 108 107
Current period provision for expected credit losses 5 7 41 27
Writeoffs, net of recoveries 11 9 26 31
Ending balance 123 103 123 103
Customer accounts receivable | Potomac Electric Power Company        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Beginning balance 69 52 59 52
Current period provision for expected credit losses 7 5 24 18
Writeoffs, net of recoveries 7 4 14 17
Ending balance 69 53 69 53
Customer accounts receivable | Delmarva Power and Light Company        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Beginning balance 23 17 17 19
Current period provision for expected credit losses 0 1 10 4
Writeoffs, net of recoveries 2 2 6 7
Ending balance 21 16 21 16
Customer accounts receivable | Atlantic City Electric Company        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Beginning balance 37 36 32 36
Current period provision for expected credit losses (2) 1 7 5
Writeoffs, net of recoveries 2 3 6 7
Ending balance 33 34 33 34
Other receivables        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Beginning balance 113 96 107 82
Current period provision for expected credit losses (7) 16 8 36
Writeoffs, net of recoveries   4 8 10
Recoveries (1)      
Ending balance 107 108 107 108
Other receivables | Commonwealth Edison Co        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Beginning balance 34 19 34 17
Current period provision for expected credit losses (3) 11 (1) 14
Writeoffs, net of recoveries 0 1 2 2
Ending balance 31 29 31 29
Other receivables | PECO Energy Co        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Beginning balance 22 13 18 8
Current period provision for expected credit losses (2) 9 7 15
Writeoffs, net of recoveries 1 2 6 3
Ending balance 19 20 19 20
Other receivables | Baltimore Gas and Electric Company        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Beginning balance 6 7 6 7
Current period provision for expected credit losses (3) (1) (2) 1
Writeoffs, net of recoveries   1   3
Recoveries (2)   (1)  
Ending balance 5 5 5 5
Other receivables | Pepco Holdings LLC        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Beginning balance 51 57 49 50
Current period provision for expected credit losses 1 (3) 4 6
Writeoffs, net of recoveries 0 0 1 2
Ending balance 52 54 52 54
Other receivables | Potomac Electric Power Company        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Beginning balance 27 35 27 28
Current period provision for expected credit losses 1 (1) 1 6
Writeoffs, net of recoveries 0 0 0 0
Ending balance 28 34 28 34
Other receivables | Delmarva Power and Light Company        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Beginning balance 9 8 9 8
Current period provision for expected credit losses 0 (1) 0 (1)
Writeoffs, net of recoveries 0 0 0 0
Ending balance 9 7 9 7
Other receivables | Atlantic City Electric Company        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Beginning balance 15 14 13 14
Current period provision for expected credit losses 0 (1) 3 1
Writeoffs, net of recoveries 0 0 1 2
Ending balance $ 15 $ 13 $ 15 $ 13