v3.25.2
Segment Information - Reconciliation to Consolidated Financial Statements (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Segment Reporting Information [Line Items]              
Total operating revenues $ 5,427   $ 5,361   $ 12,141 $ 11,403  
Operating and maintenance 1,321   1,209   2,668 2,481  
Taxes, Miscellaneous 383   360   788 731  
Gain on sale of assets 2   7   1 9  
Interest Expense, 524   476   1,028 938  
Other, net 65   64   117 139  
Income taxes 70   46   240 109  
Net income (loss) attributable to common shareholders 391 $ 908 448 $ 658 1,300 1,106  
Total assets 111,147       111,147   $ 107,784
Pepco Holdings LLC              
Segment Reporting Information [Line Items]              
Total operating revenues 1,579   1,471   3,357 3,077  
Operating and maintenance 291   231   586 506  
Taxes, Miscellaneous 136   126   276 254  
Gain on sale of assets 2   0   1 0  
Interest Expense, 102   92   201 183  
Other, net 17   29   35 57  
Income taxes 42   46   99 86  
Net income (loss) attributable to common shareholders 143 $ 194 158 $ 168 337 326  
Total assets 28,696       28,696   28,297
Related Party              
Segment Reporting Information [Line Items]              
Interest expense to affiliates, net 7   7   12 12  
Related Party | Pepco Holdings LLC              
Segment Reporting Information [Line Items]              
Operating and maintenance from affiliates 49   50   103 101  
Operating revenues from affiliates 2   2   5 4  
Interest expense to affiliates, net 1   0   2 0  
Operating Segment              
Segment Reporting Information [Line Items]              
Total operating revenues 5,427   5,361   12,141 11,403  
Operating and maintenance 1,321   1,209   2,668 2,481  
Capital expenditures 2,013   1,699   3,959 3,466  
Depreciation and amortization 902   894   1,805 1,773  
Taxes, Miscellaneous 383   360   788 731  
Gain on sale of assets (2)   (7)   (1) (9)  
Interest Expense, 524   476   1,028 938  
Other, net (65)   (64)   (117) (139)  
Income taxes 70   46   240 109  
Net income (loss) attributable to common shareholders 391   448   1,300 1,106  
Total assets 111,147       111,147   107,784
Operating Segment | Related Party              
Segment Reporting Information [Line Items]              
Operating and maintenance from affiliates 0   0   0 0  
Interest expense to affiliates, net 7   7   12 12  
Intersegment Eliminations              
Segment Reporting Information [Line Items]              
Total operating revenues (485)   (476)   (967) (946)  
Operating and maintenance (212)   (199)   (417) (398)  
Capital expenditures 0   0   0 0  
Depreciation and amortization 0   0   0 0  
Taxes, Miscellaneous 0   0   0 0  
Gain on sale of assets 0   0   0 0  
Interest Expense, 0   (1)   0 (3)  
Other, net 12   10   28 19  
Income taxes 0   0   0 0  
Net income (loss) attributable to common shareholders 0   0   0 0  
Total assets (3,847)       (3,847)   (3,940)
Intersegment Eliminations | Pepco Holdings LLC              
Segment Reporting Information [Line Items]              
Total operating revenues (113)   (117)   (221) (226)  
Operating and maintenance 0   0   0 0  
Capital expenditures 0   0   0 0  
Depreciation and amortization 0   0   0 0  
Taxes, Miscellaneous 0   0   0 0  
Gain (Loss) on Disposition of Assets         0 0  
Gain on sale of assets 0   0        
Interest Expense, 0   0   0 1  
Other, net 0   0   0 1  
Income taxes 0   0   0 0  
Net income (loss) attributable to common shareholders 0   0   0 0  
Total assets (41)       (41)   (40)
Intersegment Eliminations | Related Party              
Segment Reporting Information [Line Items]              
Operating and maintenance from affiliates (285)   (287)   (574) (565)  
Operating revenues from affiliates 0   0   0 0  
Interest expense to affiliates, net 0   1   (4) 1  
Intersegment Eliminations | Related Party | Intersubsegment Eliminations              
Segment Reporting Information [Line Items]              
Operating revenues from affiliates (483)   (474)   (961) (941)  
Intersegment Eliminations | Related Party | Pepco Holdings LLC              
Segment Reporting Information [Line Items]              
Operating and maintenance from affiliates (113)   (117)   (221) (227)  
Operating revenues from affiliates (112)   (117)   (221) (227)  
Interest expense to affiliates, net 0   0   0 (1)  
Commonwealth Edison Co | Operating Segment              
Segment Reporting Information [Line Items]              
Total operating revenues 1,836   2,079   3,901 4,174  
Operating and maintenance 322   345   645 663  
Capital expenditures 599   517   1,189 1,111  
Depreciation and amortization 387   374   767 737  
Taxes, Miscellaneous 97   94   196 188  
Gain on sale of assets 0   (5)   0 (5)  
Interest Expense, 128   120   253 239  
Other, net (31)   (20)   (53) (41)  
Income taxes 52   31   117 49  
Net income (loss) attributable to common shareholders 228   270   530 463  
Total assets 46,299       46,299   44,750
Commonwealth Edison Co | Operating Segment | Related Party              
Segment Reporting Information [Line Items]              
Operating and maintenance from affiliates 100   104   200 204  
Interest expense to affiliates, net 3   3   7 7  
Commonwealth Edison Co | Intersegment Eliminations | Related Party              
Segment Reporting Information [Line Items]              
Operating revenues from affiliates 10   2   17 4  
PECO Energy Co | Operating Segment              
Segment Reporting Information [Line Items]              
Total operating revenues 1,000   891   2,333 1,945  
Operating and maintenance 242   209   507 444  
Capital expenditures 408   382   832 743  
Depreciation and amortization 112   107   221 210  
Taxes, Miscellaneous 54   52   115 103  
Gain on sale of assets 0   (2)   0 (4)  
Interest Expense, 57   54   117 106  
Other, net (10)   (9)   (18) (18)  
Income taxes 4   3   17 13  
Net income (loss) attributable to common shareholders 136   90   402 239  
Total assets 18,230       18,230   17,123
PECO Energy Co | Operating Segment | Related Party              
Segment Reporting Information [Line Items]              
Operating and maintenance from affiliates 63   61   124 119  
Interest expense to affiliates, net 3   3   7 6  
PECO Energy Co | Intersegment Eliminations | Related Party              
Segment Reporting Information [Line Items]              
Operating revenues from affiliates 3   2   6 4  
Baltimore Gas and Electric Company | Operating Segment              
Segment Reporting Information [Line Items]              
Total operating revenues 1,029   928   2,583 2,225  
Operating and maintenance 201   188   443 392  
Capital expenditures 398   344   804 668  
Depreciation and amortization 154   162   318 312  
Taxes, Miscellaneous 85   80   181 169  
Gain on sale of assets 0   0   0 0  
Interest Expense, 61   53   120 103  
Other, net (11)   (8)   (20) (16)  
Income taxes 15   4   85 28  
Net income (loss) attributable to common shareholders 55   44   315 308  
Total assets 16,044       16,044   15,542
Baltimore Gas and Electric Company | Operating Segment | Related Party              
Segment Reporting Information [Line Items]              
Operating and maintenance from affiliates 63   62   125 122  
Interest expense to affiliates, net 0   0   0 0  
Baltimore Gas and Electric Company | Intersegment Eliminations | Related Party              
Segment Reporting Information [Line Items]              
Operating revenues from affiliates 2   2   4 5  
Pepco Holdings LLC | Operating Segment              
Segment Reporting Information [Line Items]              
Total operating revenues 1,579   1,471   3,357 3,077  
Operating and maintenance 291   231   586 506  
Capital expenditures 595   450   1,108 903  
Depreciation and amortization 233   235   467 481  
Taxes, Miscellaneous 136   126   276 254  
Gain (Loss) on Disposition of Assets         (1) 0  
Gain on sale of assets (2)   0   (1) 0  
Interest Expense, 102   92   201 183  
Other, net (17)   (29)   (35) (57)  
Income taxes 42   46   99 86  
Net income (loss) attributable to common shareholders 143   158   337 326  
Total assets 28,696       28,696   28,297
Pepco Holdings LLC | Operating Segment | Related Party              
Segment Reporting Information [Line Items]              
Operating and maintenance from affiliates 49   50   103 101  
Interest expense to affiliates, net 1   0   2 0  
Pepco Holdings LLC | Intersegment Eliminations | Related Party              
Segment Reporting Information [Line Items]              
Operating revenues from affiliates 2   2   5 4  
Potomac Electric Power Company | Operating Segment              
Segment Reporting Information [Line Items]              
Total operating revenues 776   700   1,635 1,459  
Operating and maintenance 91   37   187 123  
Capital expenditures 229   225   469 454  
Depreciation and amortization 107   98   212 205  
Taxes, Miscellaneous 109   100   222 203  
Gain (Loss) on Disposition of Assets         (1) 0  
Gain on sale of assets (2)   0        
Interest Expense, 54   46   106 92  
Other, net (9)   (16)   (20) (32)  
Income taxes 22   28   48 42  
Net income (loss) attributable to common shareholders 84   108   181 183  
Total assets 12,149       12,149   12,000
Potomac Electric Power Company | Operating Segment | Related Party              
Segment Reporting Information [Line Items]              
Operating and maintenance from affiliates 64   65   126 129  
Interest expense to affiliates, net 0   0   0 0  
Potomac Electric Power Company | Intersegment Eliminations | Related Party              
Segment Reporting Information [Line Items]              
Operating revenues from affiliates 1   2   4 3  
Delmarva Power and Light Company | Operating Segment              
Segment Reporting Information [Line Items]              
Total operating revenues 421   390   969 880  
Operating and maintenance 50   50   110 101  
Capital expenditures 121   134   277 268  
Depreciation and amortization 63   61   126 122  
Taxes, Miscellaneous 20   19   41 39  
Gain (Loss) on Disposition of Assets         0 0  
Gain on sale of assets 0   0        
Interest Expense, 25   24   50 46  
Other, net (4)   (8)   (8) (15)  
Income taxes 11   8   32 25  
Net income (loss) attributable to common shareholders 39   34   108 101  
Total assets 6,483       6,483   6,421
Delmarva Power and Light Company | Operating Segment | Related Party              
Segment Reporting Information [Line Items]              
Operating and maintenance from affiliates 45   46   91 91  
Interest expense to affiliates, net 0   0   0 0  
Delmarva Power and Light Company | Intersegment Eliminations | Related Party              
Segment Reporting Information [Line Items]              
Operating revenues from affiliates 2   1   4 3  
Atlantic City Electric Company | Operating Segment              
Segment Reporting Information [Line Items]              
Total operating revenues 384   383   757 740  
Operating and maintenance 55   50   106 97  
Capital expenditures 91   91   196 180  
Depreciation and amortization 62   72   127 146  
Taxes, Miscellaneous 3   2   5 5  
Gain (Loss) on Disposition of Assets         0 0  
Gain on sale of assets 0   0        
Interest Expense, 20   20   41 39  
Other, net (2)   (4)   (6) (8)  
Income taxes 9   8   20 18  
Net income (loss) attributable to common shareholders 24   21   56 50  
Total assets 5,495       5,495   5,349
Atlantic City Electric Company | Operating Segment | Related Party              
Segment Reporting Information [Line Items]              
Operating and maintenance from affiliates 40   42   79 81  
Interest expense to affiliates, net 0   0   0 0  
Atlantic City Electric Company | Intersegment Eliminations | Related Party              
Segment Reporting Information [Line Items]              
Operating revenues from affiliates 0   1   1 1  
Corporate and Other | Corporate, Non-Segment              
Segment Reporting Information [Line Items]              
Total operating revenues 468   468   934 928  
Operating and maintenance 477   435   904 874  
Capital expenditures 13   6   26 41  
Depreciation and amortization 16   16   32 33  
Taxes, Miscellaneous 11   8   20 17  
Gain on sale of assets 0   0   0 0  
Interest Expense, 176   158   337 310  
Other, net (8)   (8)   (19) (26)  
Income taxes (43)   (38)   (78) (67)  
Net income (loss) attributable to common shareholders (171)   (114)   (284) (230)  
Total assets 5,725       5,725   6,012
Corporate and Other | Corporate, Non-Segment | Pepco Holdings LLC              
Segment Reporting Information [Line Items]              
Total operating revenues 111   115   217 224  
Operating and maintenance 95   94   183 185  
Capital expenditures 154   0   166 1  
Depreciation and amortization 1   4   2 8  
Taxes, Miscellaneous 4   5   8 7  
Gain (Loss) on Disposition of Assets         0 0  
Gain on sale of assets 0   0        
Interest Expense, 3   2   4 5  
Other, net (2)   (1)   (1) (3)  
Income taxes 0   2   (1) 1  
Net income (loss) attributable to common shareholders (4)   (5)   (8) (8)  
Total assets 4,610       4,610   $ 4,567
Corporate and Other | Corporate, Non-Segment | Related Party              
Segment Reporting Information [Line Items]              
Operating and maintenance from affiliates 10   10   22 19  
Interest expense to affiliates, net 0   0   0 (2)  
Corporate and Other | Corporate, Non-Segment | Related Party | Pepco Holdings LLC              
Segment Reporting Information [Line Items]              
Operating and maintenance from affiliates 13   14   28 27  
Interest expense to affiliates, net 1   0   2 1  
Corporate and Other | Intersegment Eliminations | Related Party              
Segment Reporting Information [Line Items]              
Operating revenues from affiliates 466   466   929 924  
Corporate and Other | Intersegment Eliminations | Related Party | Pepco Holdings LLC              
Segment Reporting Information [Line Items]              
Operating revenues from affiliates 111   115   217 224  
Rate-regulated electric revenues              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 5,365   5,169   11,182 10,367  
Purchased power and/or fuel 1,811   1,938   3,995 4,134  
Rate-regulated electric revenues | Pepco Holdings LLC              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 1,573   1,455   3,264 2,941  
Purchased power and/or fuel 590   553   1,273 1,160  
Rate-regulated electric revenues | Operating Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 5,096   5,093   10,804 10,377  
Purchased power and/or fuel 1,811   1,938   3,995 4,134  
Rate-regulated electric revenues | Intersegment Eliminations              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues (13)   (6)   (26) (11)  
Purchased power and/or fuel 0   0   0 0  
Rate-regulated electric revenues | Intersegment Eliminations | Pepco Holdings LLC              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues (4)   (4)   (9) (6)  
Purchased power and/or fuel 0   0   0 0  
Rate-regulated electric revenues | Commonwealth Edison Co | Operating Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 1,836   2,079   3,901 4,174  
Purchased power and/or fuel 550   763   1,239 1,670  
Rate-regulated electric revenues | PECO Energy Co | Operating Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 880   797   1,836 1,577  
Purchased power and/or fuel 304   298   665 604  
Rate-regulated electric revenues | Baltimore Gas and Electric Company | Operating Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 849   782   1,861 1,664  
Purchased power and/or fuel 367   323   818 700  
Rate-regulated electric revenues | Pepco Holdings LLC | Operating Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 1,544   1,441   3,232 2,973  
Purchased power and/or fuel 590   553   1,273 1,160  
Rate-regulated electric revenues | Potomac Electric Power Company | Operating Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 776   700   1,635 1,459  
Purchased power and/or fuel 256   234   574 514  
Rate-regulated electric revenues | Delmarva Power and Light Company | Operating Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 388   362   849 780  
Purchased power and/or fuel 161   147   370 333  
Rate-regulated electric revenues | Atlantic City Electric Company | Operating Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 384   383   757 740  
Purchased power and/or fuel 173   172   329 312  
Rate-regulated electric revenues | Corporate and Other | Corporate, Non-Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 0   0   0 0  
Purchased power and/or fuel 0   1   0 0  
Rate-regulated electric revenues | Corporate and Other | Corporate, Non-Segment | Pepco Holdings LLC              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 0   0   0 0  
Purchased power and/or fuel 0   0   0 1  
Rate-regulated natural gas revenues              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 337   272   1,361 1,011  
Purchased power and/or fuel 85   54   423 267  
Rate-regulated natural gas revenues | Pepco Holdings LLC              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 33   28   120 100  
Purchased power and/or fuel 11   9   49 37  
Rate-regulated natural gas revenues | Operating Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 331   268   1,337 1,026  
Purchased power and/or fuel 85   54   423 267  
Rate-regulated natural gas revenues | Intersegment Eliminations              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues (2)   0   (2) (3)  
Purchased power and/or fuel 0   0   0 0  
Rate-regulated natural gas revenues | Intersegment Eliminations | Pepco Holdings LLC              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 0   0   0 0  
Purchased power and/or fuel 0   0   0 0  
Rate-regulated natural gas revenues | Commonwealth Edison Co | Operating Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 0   0   0 0  
Purchased power and/or fuel 0   0   0 0  
Rate-regulated natural gas revenues | PECO Energy Co | Operating Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 120   94   497 368  
Purchased power and/or fuel 35   25   176 123  
Rate-regulated natural gas revenues | Baltimore Gas and Electric Company | Operating Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 180   146   722 561  
Purchased power and/or fuel 39   20   198 107  
Rate-regulated natural gas revenues | Pepco Holdings LLC | Operating Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 33   28   120 100  
Purchased power and/or fuel 11   9   49 37  
Rate-regulated natural gas revenues | Potomac Electric Power Company | Operating Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 0   0   0 0  
Purchased power and/or fuel 0   0   0 0  
Rate-regulated natural gas revenues | Delmarva Power and Light Company | Operating Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 33   28   120 100  
Purchased power and/or fuel 11   9   49 37  
Rate-regulated natural gas revenues | Atlantic City Electric Company | Operating Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 0   0   0 0  
Purchased power and/or fuel 0   0   0 0  
Rate-regulated natural gas revenues | Corporate and Other | Corporate, Non-Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 0   0   0 0  
Purchased power and/or fuel 0   0   0 0  
Rate-regulated natural gas revenues | Corporate and Other | Corporate, Non-Segment | Pepco Holdings LLC              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 0   0   0 0  
Purchased power and/or fuel 0   0   0 0  
Shared service and other revenues | Operating Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 0   0   0 0  
Shared service and other revenues | Intersegment Eliminations              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues (470)   (470)   (939) (932)  
Shared service and other revenues | Intersegment Eliminations | Pepco Holdings LLC              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues (109)   (113)   (212) (220)  
Shared service and other revenues | Commonwealth Edison Co | Operating Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 0   0   0 0  
Shared service and other revenues | PECO Energy Co | Operating Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 0   0   0 0  
Shared service and other revenues | Baltimore Gas and Electric Company | Operating Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 0   0   0 0  
Shared service and other revenues | Pepco Holdings LLC | Operating Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 2   2   5 4  
Shared service and other revenues | Potomac Electric Power Company | Operating Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 0   0   0 0  
Shared service and other revenues | Delmarva Power and Light Company | Operating Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 0   0   0 0  
Shared service and other revenues | Atlantic City Electric Company | Operating Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 0   0   0 0  
Shared service and other revenues | Corporate and Other | Corporate, Non-Segment              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues 468   468   934 928  
Shared service and other revenues | Corporate and Other | Corporate, Non-Segment | Pepco Holdings LLC              
Segment Reporting Information [Line Items]              
Electric and natural gas operating revenues $ 111   $ 115   $ 217 $ 224