Segment Information - Electric and Gas Revenue by Customer Class (Details) - USD ($)
$ in Millions |
3 Months Ended |
6 Months Ended |
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
| Revenue, Major Customer [Line Items] |
|
|
|
|
| True-up adjustments to decoupling mechanisms and formula rates |
$ (275)
|
$ (80)
|
$ (402)
|
$ 25
|
| Total operating revenues |
5,427
|
5,361
|
12,141
|
11,403
|
| Operating Segment |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Total operating revenues |
5,427
|
5,361
|
12,141
|
11,403
|
| Commonwealth Edison Co |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| True-up adjustments to decoupling mechanisms and formula rates |
(234)
|
(43)
|
(319)
|
(24)
|
| Total operating revenues |
1,836
|
2,079
|
3,901
|
4,174
|
| Commonwealth Edison Co | Related Party |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Operating revenues from affiliates |
10
|
2
|
17
|
4
|
| Commonwealth Edison Co | Regulated Operation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Total operating revenues |
2,060
|
2,123
|
4,202
|
4,198
|
| Commonwealth Edison Co | Other Regulated Revenue |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Total operating revenues |
(224)
|
(44)
|
(301)
|
(24)
|
| PECO Energy Co |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| True-up adjustments to decoupling mechanisms and formula rates |
1
|
0
|
(8)
|
(2)
|
| Total operating revenues |
1,000
|
891
|
2,333
|
1,945
|
| PECO Energy Co | Related Party |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Operating revenues from affiliates |
3
|
2
|
6
|
4
|
| PECO Energy Co | Regulated Operation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Total operating revenues |
992
|
886
|
2,329
|
1,942
|
| PECO Energy Co | Other Regulated Revenue |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Total operating revenues |
8
|
5
|
4
|
3
|
| Baltimore Gas and Electric Company |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| True-up adjustments to decoupling mechanisms and formula rates |
(13)
|
(23)
|
(43)
|
19
|
| Total operating revenues |
1,029
|
928
|
2,583
|
2,225
|
| Baltimore Gas and Electric Company | Related Party |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Operating revenues from affiliates |
2
|
2
|
4
|
5
|
| Baltimore Gas and Electric Company | Regulated Operation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Total operating revenues |
1,037
|
950
|
2,620
|
2,202
|
| Baltimore Gas and Electric Company | Other Regulated Revenue |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Total operating revenues |
(8)
|
(22)
|
(37)
|
23
|
| Pepco Holdings LLC |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| True-up adjustments to decoupling mechanisms and formula rates |
(29)
|
(14)
|
(32)
|
32
|
| Total operating revenues |
1,579
|
1,471
|
3,357
|
3,077
|
| Pepco Holdings LLC | Related Party |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Operating revenues from affiliates |
2
|
2
|
5
|
4
|
| Pepco Holdings LLC | Regulated Operation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Total operating revenues |
1,606
|
1,482
|
3,387
|
3,038
|
| Pepco Holdings LLC | Other Regulated Revenue |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Total operating revenues |
(27)
|
(11)
|
(30)
|
39
|
| Potomac Electric Power Company |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| True-up adjustments to decoupling mechanisms and formula rates |
(16)
|
7
|
(14)
|
37
|
| Total operating revenues |
776
|
700
|
1,635
|
1,459
|
| Potomac Electric Power Company | Related Party |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Operating revenues from affiliates |
1
|
2
|
4
|
3
|
| Potomac Electric Power Company | Regulated Operation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Total operating revenues |
791
|
691
|
1,648
|
1,417
|
| Potomac Electric Power Company | Other Regulated Revenue |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Total operating revenues |
(15)
|
9
|
(13)
|
42
|
| Delmarva Power and Light Company |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| True-up adjustments to decoupling mechanisms and formula rates |
0
|
0
|
(5)
|
4
|
| Total operating revenues |
421
|
390
|
969
|
880
|
| Delmarva Power and Light Company | Related Party |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Operating revenues from affiliates |
2
|
1
|
4
|
3
|
| Delmarva Power and Light Company | Regulated Operation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Total operating revenues |
420
|
389
|
973
|
874
|
| Delmarva Power and Light Company | Other Regulated Revenue |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Total operating revenues |
1
|
1
|
(4)
|
6
|
| Atlantic City Electric Company |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| True-up adjustments to decoupling mechanisms and formula rates |
(13)
|
(21)
|
(13)
|
(9)
|
| Total operating revenues |
384
|
383
|
757
|
740
|
| Atlantic City Electric Company | Related Party |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Operating revenues from affiliates |
0
|
1
|
1
|
1
|
| Atlantic City Electric Company | Regulated Operation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Total operating revenues |
397
|
404
|
770
|
749
|
| Atlantic City Electric Company | Other Regulated Revenue |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Total operating revenues |
(13)
|
(21)
|
(13)
|
(9)
|
| Rate-regulated electric revenues |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
5,365
|
5,169
|
11,182
|
10,367
|
| Rate-regulated electric revenues | Operating Segment |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
5,096
|
5,093
|
10,804
|
10,377
|
| Rate-regulated electric revenues | Commonwealth Edison Co |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
2,060
|
2,120
|
4,203
|
4,194
|
| Rate-regulated electric revenues | Commonwealth Edison Co | Regulated Operation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
2,060
|
2,123
|
4,202
|
4,198
|
| Rate-regulated electric revenues | Commonwealth Edison Co | Regulated Operation | Related Party |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Operating revenues from affiliates |
10
|
2
|
17
|
4
|
| Rate-regulated electric revenues | Commonwealth Edison Co | Regulated Operation | Operating Segment |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
10
|
(1)
|
18
|
0
|
| Rate-regulated electric revenues | Commonwealth Edison Co | Regulated Operation | Residential |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
1,094
|
982
|
2,087
|
1,900
|
| Rate-regulated electric revenues | Commonwealth Edison Co | Regulated Operation | Small commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
553
|
560
|
1,153
|
1,154
|
| Rate-regulated electric revenues | Commonwealth Edison Co | Regulated Operation | Large commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
177
|
269
|
472
|
589
|
| Rate-regulated electric revenues | Commonwealth Edison Co | Regulated Operation | Public authorities & electric railroads |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
12
|
14
|
29
|
32
|
| Rate-regulated electric revenues | Commonwealth Edison Co | Regulated Operation | Other |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
224
|
298
|
461
|
523
|
| Rate-regulated electric revenues | PECO Energy Co |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
876
|
795
|
1,839
|
1,576
|
| Rate-regulated electric revenues | PECO Energy Co | Regulated Operation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
872
|
793
|
1,833
|
1,575
|
| Rate-regulated electric revenues | PECO Energy Co | Regulated Operation | Related Party |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Operating revenues from affiliates |
3
|
2
|
5
|
3
|
| Rate-regulated electric revenues | PECO Energy Co | Regulated Operation | Operating Segment |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
7
|
4
|
11
|
4
|
| Rate-regulated electric revenues | PECO Energy Co | Regulated Operation | Residential |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
555
|
522
|
1,186
|
1,042
|
| Rate-regulated electric revenues | PECO Energy Co | Regulated Operation | Small commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
155
|
128
|
317
|
254
|
| Rate-regulated electric revenues | PECO Energy Co | Regulated Operation | Large commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
75
|
61
|
159
|
118
|
| Rate-regulated electric revenues | PECO Energy Co | Regulated Operation | Public authorities & electric railroads |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
10
|
7
|
18
|
14
|
| Rate-regulated electric revenues | PECO Energy Co | Regulated Operation | Other |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
77
|
75
|
153
|
147
|
| Rate-regulated electric revenues | Baltimore Gas and Electric Company |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
856
|
799
|
1,877
|
1,656
|
| Rate-regulated electric revenues | Baltimore Gas and Electric Company | Regulated Operation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
853
|
800
|
1,875
|
1,657
|
| Rate-regulated electric revenues | Baltimore Gas and Electric Company | Regulated Operation | Related Party |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Operating revenues from affiliates |
1
|
2
|
3
|
4
|
| Rate-regulated electric revenues | Baltimore Gas and Electric Company | Regulated Operation | Operating Segment |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
4
|
1
|
5
|
3
|
| Rate-regulated electric revenues | Baltimore Gas and Electric Company | Regulated Operation | Residential |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
497
|
464
|
1,145
|
999
|
| Rate-regulated electric revenues | Baltimore Gas and Electric Company | Regulated Operation | Small commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
90
|
88
|
199
|
178
|
| Rate-regulated electric revenues | Baltimore Gas and Electric Company | Regulated Operation | Large commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
140
|
139
|
284
|
271
|
| Rate-regulated electric revenues | Baltimore Gas and Electric Company | Regulated Operation | Public authorities & electric railroads |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
8
|
8
|
17
|
15
|
| Rate-regulated electric revenues | Baltimore Gas and Electric Company | Regulated Operation | Other |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
118
|
101
|
230
|
194
|
| Rate-regulated electric revenues | Pepco Holdings LLC |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
1,573
|
1,455
|
3,264
|
2,941
|
| Rate-regulated electric revenues | Pepco Holdings LLC | Regulated Operation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
1,573
|
1,454
|
3,267
|
2,938
|
| Rate-regulated electric revenues | Pepco Holdings LLC | Regulated Operation | Related Party |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Operating revenues from affiliates |
2
|
2
|
5
|
4
|
| Rate-regulated electric revenues | Pepco Holdings LLC | Regulated Operation | Operating Segment |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
2
|
3
|
2
|
7
|
| Rate-regulated electric revenues | Pepco Holdings LLC | Regulated Operation | Residential |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
780
|
746
|
1,698
|
1,521
|
| Rate-regulated electric revenues | Pepco Holdings LLC | Regulated Operation | Small commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
168
|
158
|
338
|
316
|
| Rate-regulated electric revenues | Pepco Holdings LLC | Regulated Operation | Large commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
370
|
329
|
738
|
669
|
| Rate-regulated electric revenues | Pepco Holdings LLC | Regulated Operation | Public authorities & electric railroads |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
22
|
16
|
39
|
36
|
| Rate-regulated electric revenues | Pepco Holdings LLC | Regulated Operation | Other |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
233
|
205
|
454
|
396
|
| Rate-regulated electric revenues | Potomac Electric Power Company |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
791
|
691
|
1,645
|
1,419
|
| Rate-regulated electric revenues | Potomac Electric Power Company | Regulated Operation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
791
|
691
|
1,648
|
1,417
|
| Rate-regulated electric revenues | Potomac Electric Power Company | Regulated Operation | Related Party |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Operating revenues from affiliates |
1
|
2
|
4
|
3
|
| Rate-regulated electric revenues | Potomac Electric Power Company | Regulated Operation | Operating Segment |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
1
|
2
|
1
|
5
|
| Rate-regulated electric revenues | Potomac Electric Power Company | Regulated Operation | Residential |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
348
|
315
|
772
|
659
|
| Rate-regulated electric revenues | Potomac Electric Power Company | Regulated Operation | Small commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
48
|
43
|
99
|
89
|
| Rate-regulated electric revenues | Potomac Electric Power Company | Regulated Operation | Large commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
292
|
251
|
581
|
513
|
| Rate-regulated electric revenues | Potomac Electric Power Company | Regulated Operation | Public authorities & electric railroads |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
12
|
7
|
20
|
18
|
| Rate-regulated electric revenues | Potomac Electric Power Company | Regulated Operation | Other |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
91
|
75
|
176
|
138
|
| Rate-regulated electric revenues | Delmarva Power and Light Company |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
386
|
361
|
850
|
773
|
| Rate-regulated electric revenues | Delmarva Power and Light Company | Regulated Operation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
387
|
361
|
853
|
774
|
| Rate-regulated electric revenues | Delmarva Power and Light Company | Regulated Operation | Related Party |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Operating revenues from affiliates |
2
|
1
|
4
|
3
|
| Rate-regulated electric revenues | Delmarva Power and Light Company | Regulated Operation | Operating Segment |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
1
|
1
|
1
|
2
|
| Rate-regulated electric revenues | Delmarva Power and Light Company | Regulated Operation | Residential |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
210
|
202
|
508
|
458
|
| Rate-regulated electric revenues | Delmarva Power and Light Company | Regulated Operation | Small commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
64
|
60
|
128
|
122
|
| Rate-regulated electric revenues | Delmarva Power and Light Company | Regulated Operation | Large commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
31
|
31
|
60
|
60
|
| Rate-regulated electric revenues | Delmarva Power and Light Company | Regulated Operation | Public authorities & electric railroads |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
5
|
4
|
9
|
8
|
| Rate-regulated electric revenues | Delmarva Power and Light Company | Regulated Operation | Other |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
77
|
64
|
148
|
126
|
| Rate-regulated electric revenues | Atlantic City Electric Company |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
397
|
403
|
769
|
748
|
| Rate-regulated electric revenues | Atlantic City Electric Company | Regulated Operation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
397
|
404
|
770
|
749
|
| Rate-regulated electric revenues | Atlantic City Electric Company | Regulated Operation | Related Party |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Operating revenues from affiliates |
0
|
1
|
1
|
1
|
| Rate-regulated electric revenues | Atlantic City Electric Company | Regulated Operation | Operating Segment |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Rate-regulated electric revenues | Atlantic City Electric Company | Regulated Operation | Residential |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
222
|
229
|
418
|
404
|
| Rate-regulated electric revenues | Atlantic City Electric Company | Regulated Operation | Small commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
56
|
55
|
111
|
105
|
| Rate-regulated electric revenues | Atlantic City Electric Company | Regulated Operation | Large commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
47
|
47
|
97
|
96
|
| Rate-regulated electric revenues | Atlantic City Electric Company | Regulated Operation | Public authorities & electric railroads |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
5
|
5
|
10
|
10
|
| Rate-regulated electric revenues | Atlantic City Electric Company | Regulated Operation | Other |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
67
|
68
|
134
|
134
|
| Rate-regulated natural gas revenues |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
337
|
272
|
1,361
|
1,011
|
| Rate-regulated natural gas revenues | Operating Segment |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
331
|
268
|
1,337
|
1,026
|
| Rate-regulated natural gas revenues | Commonwealth Edison Co | Regulated Operation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Rate-regulated natural gas revenues | Commonwealth Edison Co | Regulated Operation | Operating Segment |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Rate-regulated natural gas revenues | Commonwealth Edison Co | Regulated Operation | Residential |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Rate-regulated natural gas revenues | Commonwealth Edison Co | Regulated Operation | Small commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Rate-regulated natural gas revenues | Commonwealth Edison Co | Regulated Operation | Large commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Rate-regulated natural gas revenues | Commonwealth Edison Co | Regulated Operation | Transportation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Rate-regulated natural gas revenues | Commonwealth Edison Co | Regulated Operation | Other |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Rate-regulated natural gas revenues | PECO Energy Co |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
120
|
94
|
496
|
367
|
| Rate-regulated natural gas revenues | PECO Energy Co | Regulated Operation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
120
|
93
|
496
|
367
|
| Rate-regulated natural gas revenues | PECO Energy Co | Regulated Operation | Related Party |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Operating revenues from affiliates |
0
|
0
|
1
|
1
|
| Rate-regulated natural gas revenues | PECO Energy Co | Regulated Operation | Operating Segment |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
1
|
1
|
1
|
| Rate-regulated natural gas revenues | PECO Energy Co | Regulated Operation | Residential |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
79
|
63
|
346
|
256
|
| Rate-regulated natural gas revenues | PECO Energy Co | Regulated Operation | Small commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
31
|
25
|
117
|
89
|
| Rate-regulated natural gas revenues | PECO Energy Co | Regulated Operation | Large commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Rate-regulated natural gas revenues | PECO Energy Co | Regulated Operation | Transportation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
8
|
5
|
21
|
13
|
| Rate-regulated natural gas revenues | PECO Energy Co | Regulated Operation | Other |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
2
|
0
|
12
|
9
|
| Rate-regulated natural gas revenues | Baltimore Gas and Electric Company |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
184
|
150
|
745
|
545
|
| Rate-regulated natural gas revenues | Baltimore Gas and Electric Company | Regulated Operation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
184
|
150
|
745
|
545
|
| Rate-regulated natural gas revenues | Baltimore Gas and Electric Company | Regulated Operation | Related Party |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Operating revenues from affiliates |
1
|
0
|
1
|
1
|
| Rate-regulated natural gas revenues | Baltimore Gas and Electric Company | Regulated Operation | Operating Segment |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
1
|
0
|
1
|
1
|
| Rate-regulated natural gas revenues | Baltimore Gas and Electric Company | Regulated Operation | Residential |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
108
|
89
|
486
|
360
|
| Rate-regulated natural gas revenues | Baltimore Gas and Electric Company | Regulated Operation | Small commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
23
|
17
|
86
|
65
|
| Rate-regulated natural gas revenues | Baltimore Gas and Electric Company | Regulated Operation | Large commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
46
|
40
|
142
|
112
|
| Rate-regulated natural gas revenues | Baltimore Gas and Electric Company | Regulated Operation | Transportation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Rate-regulated natural gas revenues | Baltimore Gas and Electric Company | Regulated Operation | Other |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
7
|
4
|
31
|
8
|
| Rate-regulated natural gas revenues | Pepco Holdings LLC |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
33
|
28
|
120
|
100
|
| Rate-regulated natural gas revenues | Pepco Holdings LLC | Regulated Operation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
33
|
28
|
120
|
100
|
| Rate-regulated natural gas revenues | Pepco Holdings LLC | Regulated Operation | Operating Segment |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Rate-regulated natural gas revenues | Pepco Holdings LLC | Regulated Operation | Residential |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
17
|
15
|
73
|
61
|
| Rate-regulated natural gas revenues | Pepco Holdings LLC | Regulated Operation | Small commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
8
|
7
|
28
|
24
|
| Rate-regulated natural gas revenues | Pepco Holdings LLC | Regulated Operation | Large commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
1
|
1
|
4
|
3
|
| Rate-regulated natural gas revenues | Pepco Holdings LLC | Regulated Operation | Transportation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
4
|
4
|
9
|
9
|
| Rate-regulated natural gas revenues | Pepco Holdings LLC | Regulated Operation | Other |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
3
|
1
|
6
|
3
|
| Rate-regulated natural gas revenues | Potomac Electric Power Company | Regulated Operation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Rate-regulated natural gas revenues | Potomac Electric Power Company | Regulated Operation | Operating Segment |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Rate-regulated natural gas revenues | Potomac Electric Power Company | Regulated Operation | Residential |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Rate-regulated natural gas revenues | Potomac Electric Power Company | Regulated Operation | Small commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Rate-regulated natural gas revenues | Potomac Electric Power Company | Regulated Operation | Large commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Rate-regulated natural gas revenues | Potomac Electric Power Company | Regulated Operation | Transportation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Rate-regulated natural gas revenues | Potomac Electric Power Company | Regulated Operation | Other |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Rate-regulated natural gas revenues | Delmarva Power and Light Company |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
33
|
28
|
120
|
100
|
| Rate-regulated natural gas revenues | Delmarva Power and Light Company | Regulated Operation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
33
|
28
|
120
|
100
|
| Rate-regulated natural gas revenues | Delmarva Power and Light Company | Regulated Operation | Operating Segment |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Rate-regulated natural gas revenues | Delmarva Power and Light Company | Regulated Operation | Residential |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
17
|
15
|
73
|
61
|
| Rate-regulated natural gas revenues | Delmarva Power and Light Company | Regulated Operation | Small commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
8
|
7
|
28
|
24
|
| Rate-regulated natural gas revenues | Delmarva Power and Light Company | Regulated Operation | Large commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
1
|
1
|
4
|
3
|
| Rate-regulated natural gas revenues | Delmarva Power and Light Company | Regulated Operation | Transportation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
4
|
4
|
9
|
9
|
| Rate-regulated natural gas revenues | Delmarva Power and Light Company | Regulated Operation | Other |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
3
|
1
|
6
|
3
|
| Rate-regulated natural gas revenues | Atlantic City Electric Company | Regulated Operation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Rate-regulated natural gas revenues | Atlantic City Electric Company | Regulated Operation | Operating Segment |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Rate-regulated natural gas revenues | Atlantic City Electric Company | Regulated Operation | Residential |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Rate-regulated natural gas revenues | Atlantic City Electric Company | Regulated Operation | Small commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Rate-regulated natural gas revenues | Atlantic City Electric Company | Regulated Operation | Large commercial & industrial |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Rate-regulated natural gas revenues | Atlantic City Electric Company | Regulated Operation | Transportation |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Rate-regulated natural gas revenues | Atlantic City Electric Company | Regulated Operation | Other |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| Electric and natural gas operating revenues |
0
|
0
|
0
|
0
|
| Alternative revenue programs | Commonwealth Edison Co | Regulated Operation | Operating Segment |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| True-up adjustments to decoupling mechanisms and formula rates |
(234)
|
(43)
|
(319)
|
(24)
|
| Alternative revenue programs | PECO Energy Co | Regulated Operation | Operating Segment |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| True-up adjustments to decoupling mechanisms and formula rates |
1
|
0
|
(8)
|
(2)
|
| Alternative revenue programs | Baltimore Gas and Electric Company | Regulated Operation | Operating Segment |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| True-up adjustments to decoupling mechanisms and formula rates |
(13)
|
(23)
|
(43)
|
19
|
| Alternative revenue programs | Pepco Holdings LLC | Regulated Operation | Operating Segment |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| True-up adjustments to decoupling mechanisms and formula rates |
(29)
|
(14)
|
(32)
|
32
|
| Alternative revenue programs | Potomac Electric Power Company | Regulated Operation | Operating Segment |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| True-up adjustments to decoupling mechanisms and formula rates |
(16)
|
7
|
(14)
|
37
|
| Alternative revenue programs | Delmarva Power and Light Company | Regulated Operation | Operating Segment |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| True-up adjustments to decoupling mechanisms and formula rates |
0
|
0
|
(5)
|
4
|
| Alternative revenue programs | Atlantic City Electric Company | Regulated Operation | Operating Segment |
|
|
|
|
| Revenue, Major Customer [Line Items] |
|
|
|
|
| True-up adjustments to decoupling mechanisms and formula rates |
$ (13)
|
$ (21)
|
$ (13)
|
$ (9)
|