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Financial Information by Business Segment (Tables) | 9 Months Ended
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Sep. 30, 2020
Segment Reporting [Abstract] |
Financial Data for Business Segments | The financial data for the business segments for the three and nine months ended September 30, 2020 and 2019 were as follows:
| For the Three Months Ended September 30,
| Operating revenues | Inter-segment revenues | Depreciation and amortization | Operating income/(loss)
(Millions of Dollars) | 2020 | 2019 | 2020 | 2019 | 2020 | 2019 | 2020 | 2019
CECONY |  |  |  |  |  |  |  |
Electric | $2,562 | $2,544 | $4 | $4 | $305 | $266 | $813 | $803
Gas | 259 | 275 | 2 | 2 | 74 | 58 | (34) | (24)
Steam | 51 | 58 | 18 | 18 | 22 | 22 | (57) | (56)
Consolidation adjustments | — |  | — |  | (24) | (24) | — |  | — |  | — |  | — |
Total CECONY | $2,872 | $2,877 | $— |  | $— |  | $401 | $346 | $722 | $723
O&R |  |  |  |  |  |  |  |
Electric | $208 | $210 | $— |  | $— |  | $17 | $16 | $58 | $56
Gas | 30 | 31 | — |  | — |  | 6 | 6 | (9) | (10)
Total O&R | $238 | $241 | $— |  | $— |  | $23 | $22 | $49 | $46
Clean Energy Businesses | $222 | $247 | $— |  | $— |  | $58 | $53 | $92 | $100
Con Edison Transmission | 1 | 1 | — |  | — |  | — |  | — |  | (2) | (1)
Other (a) | — |  | (1) |  | — |  | — |  | — |  | — |  | (1) | (1)
Total Con Edison | $3,333 | $3,365 | $— |  | $— |  | $482 | $421 | $860 | $867
(a) Parent company and consolidation adjustments. Other does not represent a business segment.
| For the Nine Months Ended September 30,
| Operating revenues | Inter-segment revenues | Depreciation and amortization | Operating income/(loss)
(Millions of Dollars) | 2020 | 2019 | 2020 | 2019 | 2020 | 2019 | 2020 | 2019
CECONY |  |  |  |  |  |  |  |
Electric | $6,178 | $6,174 | $13 | $13 | $904 | $785 | $1,413 | $1,374
Gas | 1,509 | 1,605 | 5 | 6 | 216 | 168 | 440 | 414
Steam | 385 | 469 | 56 | 52 | 67 | 67 | 1 | 37
Consolidation adjustments | — |  | — |  | (74) | (71) | — |  | — |  | — |  | — |
Total CECONY | $8,072 | $8,248 | $— |  | $— |  | $1,187 | $1,020 | $1,854 | $1,825
O&R |  |  |  |  |  |  |  |
Electric | $483 | $493 | $— |  | $— |  | $48 | $46 | $86 | $88
Gas | 164 | 185 | — |  | — |  | 19 | 17 | 28 | 25
Total O&R | $647 | $678 | $— |  | $— |  | $67 | $63 | $114 | $113
Clean Energy Businesses | $566 | $696 | $— |  | $— |  | $173 | $169 | $188 | $183
Con Edison Transmission | 3 | 3 | — |  | — |  | 1 |  | 1 |  | (6) | (5)
Other (a) | (2) | (2) | — |  | — |  | — |  | — |  | (3) | (5)
Total Con Edison | $9,286 | $9,623 | $— |  | $— |  | $1,428 | $1,253 | $2,147 | $2,111
(a) Parent company and consolidation adjustments. Other does not represent a business segment.

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8813-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8721-108599 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8906-108599 + Details
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