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Financial Information by Business Segment (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Segment Reporting Information [Line Items] |  |  |
TOTAL OPERATING REVENUES | $ 15,256 | $ 14,663 | $ 15,670
Other operations and maintenance | 3,751 | 3,606 | 3,905
Depreciation and amortization | 2,155 | 2,031 | 2,056
Other operating expense | 6,680 | 5,830 | 7,085
Operating income | 2,670 | 3,196 | 2,624
Other Income (deductions) | 655 | 830 | 326
Interest Expense | 1,250 | 1,075 | 888
Allowance for borrowed funds used during construction | (63) | (52) | (36)
Income Tax Expense | 318 | 487 | 498
Total assets | 70,562 | 66,331 | 69,065
Capital expenditures | 4,728 | 4,509 | 4,465
Con Edison Transmission |  |  |
Segment Reporting Information [Line Items] |  |  |
Other operations and maintenance | 11 | 11 |
CECONY |  |  |
Segment Reporting Information [Line Items] |  |  |
TOTAL OPERATING REVENUES | 14,129 | 13,476 | 13,268
Depreciation and amortization | 2,037 | 1,924 | 1,778
Operating income | 2,593 | 2,177 | 2,135
Other Income (deductions) | 578 | 732 | 332
Allowance for borrowed funds used during construction | (58) | (49) | (33)
Total assets | 65,650 | 61,600 |
Operating segment |  |  |
Segment Reporting Information [Line Items] |  |  |
Other operations and maintenance | 0 | (3) |
Operating segment | Clean Energy Businesses |  |  |
Segment Reporting Information [Line Items] |  |  |
TOTAL OPERATING REVENUES | 0 | 129 | 1,319
Other operations and maintenance |  |  | 503
Depreciation and amortization |  | 0 | 178
Other operating expense |  | 45 | 270
Operating income |  | 37 | 368
Other Income (deductions) |  | 1 | 3
Interest Expense |  | 16 | (35)
Income Tax Expense |  | 3 | 84
Total assets |  | 0 | 7,224
Capital expenditures |  | 81 | 399
Operating segment | Con Edison Transmission |  |  |
Segment Reporting Information [Line Items] |  |  |
TOTAL OPERATING REVENUES | 4 | 4 | 4
Other operations and maintenance |  |  | 12
Depreciation and amortization | 1 | 1 | 1
Other operating expense | 0 | 1 | 1
Operating income | (8) | (9) | (10)
Other Income (deductions) | 61 | 62 | 19
Interest Expense | 0 | 2 | 5
Income Tax Expense | 8 | 14 | 5
Total assets | 470 | 414 | 314
Capital expenditures | 29 | 49 | 65
Operating segment | CECONY |  |  |
Segment Reporting Information [Line Items] |  |  |
TOTAL OPERATING REVENUES | 14,129 | 13,476 | 13,268
Other operations and maintenance | 3,353 | 3,176 | 3,042
Depreciation and amortization | 2,037 | 1,924 | 1,778
Other operating expense | 6,146 | 6,199 | 6,313
Operating income | 2,593 | 2,177 | 2,135
Other Income (deductions) | 578 | 732 | 332
Interest Expense | 1,167 | 994 | 855
Allowance for borrowed funds used during construction | (58) | (49) | (33)
Income Tax Expense | 314 | 358 | 255
Total assets | 65,650 | 61,600 | 57,445
Capital expenditures | 4,374 | 4,083 | 3,758
Operating segment | CECONY | Electric |  |  |
Segment Reporting Information [Line Items] |  |  |
TOTAL OPERATING REVENUES |  | 10,078 | 9,751
Other operations and maintenance | 2,622 | 2,417 | 2,373
Depreciation and amortization | 1,471 | 1,395 | 1,315
Other operating expense | 4,792 | 4,698 | 4,567
Operating income | 1,832 | 1,568 | 1,496
Other Income (deductions) | 441 | 564 | 259
Interest Expense | 826 | 708 | 609
Allowance for borrowed funds used during construction | (41) | (34) | (27)
Income Tax Expense | 193 | 217 | 134
Total assets | 46,275 | 42,226 | 39,153
Capital expenditures | 3,088 | 2,909 | 2,522
Operating segment | CECONY | Gas |  |  |
Segment Reporting Information [Line Items] |  |  |
TOTAL OPERATING REVENUES |  | 2,829 | 2,924
Other operations and maintenance | 528 | 528 | 471
Depreciation and amortization | 458 | 429 | 367
Other operating expense | 1,100 | 1,190 | 1,426
Operating income | 748 | 682 | 660
Other Income (deductions) | 102 | 122 | 52
Interest Expense | 287 | 240 | 203
Allowance for borrowed funds used during construction | (16) | (13) | (5)
Income Tax Expense | 132 | 159 | 140
Total assets | 16,507 | 16,343 | 15,361
Capital expenditures | 1,154 | 1,046 | 1,128
Operating segment | CECONY | Steam |  |  |
Segment Reporting Information [Line Items] |  |  |
TOTAL OPERATING REVENUES |  | 569 | 593
Other operations and maintenance | 203 | 231 | 198
Depreciation and amortization | 108 | 100 | 96
Other operating expense | 254 | 311 | 320
Operating income | 13 | (73) | (21)
Other Income (deductions) | 35 | 46 | 21
Interest Expense | 54 | 46 | 43
Allowance for borrowed funds used during construction | (1) | (2) | (1)
Income Tax Expense | (11) | (18) | (19)
Total assets | 2,868 | 3,031 | 2,931
Capital expenditures | 132 | 128 | 108
Operating segment | O&R |  |  |
Segment Reporting Information [Line Items] |  |  |
TOTAL OPERATING REVENUES | 1,125 | 1,056 | 1,085
Other operations and maintenance | 387 | 375 | 352
Depreciation and amortization | 117 | 106 | 98
Other operating expense | 460 | 449 | 499
Operating income | 161 | 126 | 136
Other Income (deductions) | 32 | 49 | 23
Interest Expense | 65 | 54 | 49
Allowance for borrowed funds used during construction | (5) | (3) | (3)
Income Tax Expense | 29 | 28 | 25
Total assets | 4,060 | 3,675 | 3,511
Capital expenditures | 325 | 296 | 243
Operating segment | O&R | Electric |  |  |
Segment Reporting Information [Line Items] |  |  |
TOTAL OPERATING REVENUES |  | 759 | 773
Other operations and maintenance | 307 | 292 | 275
Depreciation and amortization | 82 | 76 | 71
Other operating expense | 351 | 306 | 333
Operating income | 112 | 85 | 94
Other Income (deductions) | 25 | 37 | 17
Interest Expense | 43 | 35 | 32
Allowance for borrowed funds used during construction | (5) | (3) | (3)
Income Tax Expense | 24 | 20 | 17
Total assets | 2,596 | 2,329 | 2,247
Capital expenditures | 214 | 211 | 167
Operating segment | O&R | Gas |  |  |
Segment Reporting Information [Line Items] |  |  |
TOTAL OPERATING REVENUES |  | 297 | 312
Other operations and maintenance | 80 | 83 | 77
Depreciation and amortization | 35 | 30 | 27
Other operating expense | 109 | 143 | 166
Operating income | 49 | 41 | 42
Other Income (deductions) | 7 | 12 | 6
Interest Expense | 22 | 19 | 17
Income Tax Expense | 5 | 8 | 8
Total assets | 1,464 | 1,346 | 1,264
Capital expenditures | 111 | 85 | 76
Other |  |  |
Segment Reporting Information [Line Items] |  |  |
TOTAL OPERATING REVENUES | (2) | (2) | (6)
Other operations and maintenance |  |  | (4)
Depreciation and amortization | 0 | 0 | 1
Other operating expense | 74 | (864) | 2
Operating income | (76) | 865 | (5)
Other Income (deductions) | (16) | (14) | (51)
Interest Expense | 18 | 9 | 14
Income Tax Expense | (33) | 84 | 129
Total assets | 382 | 642 | 571
Capital expenditures | 0 | 0 | 0
Other | Clean Energy Businesses |  |  |
Segment Reporting Information [Line Items] |  |  |
Other operations and maintenance |  | 47 |
Inter- segment revenues | CECONY |  |  |
Segment Reporting Information [Line Items] |  |  |
TOTAL OPERATING REVENUES | (104) | (100) | (103)
Inter- segment revenues | CECONY | Electric |  |  |
Segment Reporting Information [Line Items] |  |  |
TOTAL OPERATING REVENUES | 20 | 18 | 19
Inter- segment revenues | CECONY | Gas |  |  |
Segment Reporting Information [Line Items] |  |  |
TOTAL OPERATING REVENUES | 9 | 8 | 8
Inter- segment revenues | CECONY | Steam |  |  |
Segment Reporting Information [Line Items] |  |  |
TOTAL OPERATING REVENUES | $ 75 | $ 74 | $ 76

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