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Financial Information by Business Segment (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | $ 4,530 | $ 4,092 | $ 12,924 | $ 11,587 |
Other operations and maintenance | 967 | 965 | 2,840 | 2,841 |
Depreciation and amortization | 586 | 550 | 1,726 | 1,601 |
Other operating expense | 2,011 | 986 | 5,910 | 4,952 |
Operating income (loss) | 968 | 862 | 2,448 | 2,193 |
Other Income (deductions) | 231 | 165 | 693 | 507 |
Interest Expense | 323 | 322 | 971 | 928 |
Allowance for borrowed funds used during construction | (14) | (16) | (49) | (45) |
Income Tax Expense | 202 | 133 | 493 | 307 |
Total assets | 71,844 | 68,645 | 71,844 | 68,645 | $ 70,562
Capital expenditures | 1,231 | 1,163 | 3,586 | 3,465 |
CECONY |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 4,181 | 3,762 | 11,963 | 10,730 |
Depreciation and amortization | 554 | 520 | 1,631 | 1,512 |
Operating income (loss) | 914 | 803 | 2,328 | 2,107 |
Other Income (deductions) | 201 | 138 | 608 | 436 |
Allowance for borrowed funds used during construction | (12) | (15) | (45) | (40) |
Total assets | 66,636 |  | 66,636 |  | $ 65,650
Operating segment | Con Edison Transmission |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 1 | 1 | 3 | 3 |
Other operations and maintenance | 4 | 2 | 8 | 8 |
Depreciation and amortization | 0 | 0 | 1 | 1 |
Other operating expense | 0 | 2 | 0 | 0 |
Operating income (loss) | (1) | (1) | (6) | (6) |
Other Income (deductions) | 16 | 16 | 49 | 46 |
Interest Expense | 0 | 0 | 0 | 0 |
Income Tax Expense | 4 | 4 | 12 | 5 |
Total assets | 505 | 456 | 505 | 456 |
Capital expenditures | 8 | 9 | 37 | 22 |
Operating segment | CECONY |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 4,181 | 3,762 | 11,963 | 10,730 |
Other operations and maintenance | 871 | 871 | 2,551 | 2,539 |
Depreciation and amortization | 554 | 520 | 1,631 | 1,512 |
Other operating expense | 1,842 | 880 | 5,453 | 4,572 |
Operating income (loss) | 914 | 803 | 2,328 | 2,107 |
Other Income (deductions) | 201 | 138 | 608 | 436 |
Interest Expense | 301 | 300 | 913 | 865 |
Allowance for borrowed funds used during construction | (12) | (15) | (45) | (41) |
Income Tax Expense | 188 | 119 | 462 | 301 |
Total assets | 66,636 | 63,849 | 66,636 | 63,849 |
Capital expenditures | 1,089 | 1,082 | 3,234 | 3,227 |
Operating segment | CECONY | Electric |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 3,733 | 3,376 | 9,000 | 8,188 |
Other operations and maintenance | 686 | 686 | 1,980 | 1,979 |
Depreciation and amortization | 403 | 376 | 1,187 | 1,090 |
Other operating expense | 1,520 | 696 | 4,105 | 3,608 |
Operating income (loss) | 1,124 | 998 | 1,728 | 1,511 |
Other Income (deductions) | 153 | 105 | 466 | 332 |
Interest Expense | 213 | 213 | 644 | 612 |
Allowance for borrowed funds used during construction | (7) | (10) | (31) | (28) |
Income Tax Expense | 256 | 187 | 343 | 191 |
Total assets | 47,820 | 44,828 | 47,820 | 44,828 |
Capital expenditures | 780 | 756 | 2,285 | 2,269 |
Operating segment | CECONY | Gas |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 392 | 337 | 2,446 | 2,119 |
Other operations and maintenance | 132 | 132 | 406 | 407 |
Depreciation and amortization | 122 | 117 | 359 | 343 |
Other operating expense | 260 | 132 | 1,080 | 781 |
Operating income (loss) | (122) | (112) | 601 | 588 |
Other Income (deductions) | 36 | 24 | 105 | 78 |
Interest Expense | 74 | 73 | 226 | 213 |
Allowance for borrowed funds used during construction | (5) | (4) | (13) | (12) |
Income Tax Expense | (44) | (43) | 125 | 117 |
Total assets | 16,080 | 16,116 | 16,080 | 16,116 |
Capital expenditures | 282 | 292 | 867 | 854 |
Operating segment | CECONY | Steam |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 56 | 49 | 517 | 423 |
Other operations and maintenance | 53 | 53 | 165 | 153 |
Depreciation and amortization | 29 | 27 | 85 | 79 |
Other operating expense | 62 | 52 | 268 | 183 |
Operating income (loss) | (88) | (83) | (1) | 8 |
Other Income (deductions) | 12 | 9 | 37 | 26 |
Interest Expense | 14 | 14 | 43 | 40 |
Allowance for borrowed funds used during construction | 0 | (1) | (1) | (1) |
Income Tax Expense | (24) | (25) | (6) | (7) |
Total assets | 2,736 | 2,905 | 2,736 | 2,905 |
Capital expenditures | 27 | 34 | 82 | 104 |
Operating segment | O&R |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 349 | 329 | 959 | 855 |
Other operations and maintenance | 92 | 92 | 280 | 294 |
Depreciation and amortization | 32 | 30 | 94 | 87 |
Other operating expense | 168 | 104 | 453 | 347 |
Operating income (loss) | 57 | 63 | 132 | 127 |
Other Income (deductions) | 11 | 8 | 34 | 24 |
Interest Expense | 18 | 18 | 51 | 48 |
Allowance for borrowed funds used during construction | (2) | (1) | (4) | (4) |
Income Tax Expense | 12 | 12 | 25 | 25 |
Total assets | 4,341 | 3,970 | 4,341 | 3,970 |
Capital expenditures | 134 | 72 | 315 | 216 |
Operating segment | O&R | Electric |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 308 | 293 | 719 | 662 |
Other operations and maintenance | 71 | 71 | 219 | 233 |
Depreciation and amortization | 22 | 21 | 65 | 61 |
Other operating expense | 144 | 83 | 332 | 271 |
Operating income (loss) | 71 | 72 | 103 | 97 |
Other Income (deductions) | 8 | 6 | 26 | 19 |
Interest Expense | 12 | 12 | 34 | 31 |
Allowance for borrowed funds used during construction | (2) | (1) | (4) | (4) |
Income Tax Expense | 17 | 17 | 22 | 22 |
Total assets | 2,869 | 2,529 | 2,869 | 2,529 |
Capital expenditures | 95 | 47 | 218 | 148 |
Operating segment | O&R | Gas |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 41 | 36 | 240 | 193 |
Other operations and maintenance | 21 | 21 | 61 | 61 |
Depreciation and amortization | 10 | 9 | 29 | 26 |
Other operating expense | 24 | 21 | 121 | 76 |
Operating income (loss) | (14) | (9) | 29 | 30 |
Other Income (deductions) | 3 | 2 | 8 | 5 |
Interest Expense | 6 | 6 | 17 | 17 |
Allowance for borrowed funds used during construction |  |  | 0 |  |
Income Tax Expense | (5) | (5) | 3 | 3 |
Total assets | 1,472 | 1,441 | 1,472 | 1,441 |
Capital expenditures | 39 | 25 | 97 | 68 |
Other |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | (1) | 0 | (1) | (1) |
Other operations and maintenance | 0 | 0 | 1 | 0 |
Depreciation and amortization | 0 | 0 | 0 | 1 |
Other operating expense | 1 | 0 | 4 | 33 |
Operating income (loss) | (2) | (3) | (6) | (35) |
Other Income (deductions) | 3 | 3 | 2 | 1 |
Interest Expense | 4 | 4 | 7 | 15 |
Allowance for borrowed funds used during construction | 0 | 0 |  | 0 |
Income Tax Expense | (2) | (2) | (6) | (24) |
Total assets | 362 | 370 | 362 | 370 |
Capital expenditures | 0 | 0 | 0 | 0 |
Inter-segment |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 0 | 0 | 0 | 0 |
Inter-segment | CECONY |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | (26) | (26) | (79) | (78) |
Inter-segment | CECONY | Electric |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 5 | 5 | 15 | 15 |
Inter-segment | CECONY | Gas |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 2 | 2 | 6 | 7 |
Inter-segment | CECONY | Steam |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | $ 19 | $ 19 | $ 58 | $ 56 |

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