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Financial Information by Business Segment | 12 Months Ended
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Dec. 31, 2020
Segment Reporting [Abstract] |
Financial Information by Business Segment | Financial Information by Business Segment The business segments of each of the Companies, which are its operating segments, were determined based on management’s reporting and decision-making requirements in accordance with the accounting rules for segment reporting. Con Edison’s principal business segments are CECONY’s regulated utility activities, O&R’s regulated utility activities, the Clean Energy Businesses and Con Edison Transmission. CECONY’s principal business segments are its regulated electric, gas and steam utility activities. All revenues of these business segments are from customers located in the United States of America. Also, all assets of the business segments are located in the United States of America. The accounting policies of the segments are the same as those described in Note A. Common services shared by the business segments are assigned directly or allocated based on various cost factors, depending on the nature of the service provided. The financial data for the business segments are as follows:
As of and for the Year Ended December 31, 2020 (Millions of Dollars) | Operating revenues | Inter- segment revenues | Depreciation and amortization | Operating income | Other Income (deductions) | Interest charges | Income taxes on operating income (a) | Total assets | Capital expenditures
CECONY |  |  |  |  |  |  |  |  |
Electric | $8,103 | $18 | $1,214 | $1,731 | $(134) | $535 | $130 | $35,673 | $2,080
Gas | 2,036 | 7 | 294 | 574 | (25) | 164 | 102 | 12,678 | 1,044
Steam | 508 | 74 | 90 | 5 | (12) | 40 | (14) | 2,616 | 122
Consolidation adjustments | — |  | (99) | — |  | — |  | — |  | — |  | — |  | — |  | — |
Total CECONY | $10,647 | $— |  | $1,598 | $2,310 | ($171) | $739 | $218 | $50,967 | $3,246
O&R |  |  |  |  |  |  |  |  |
Electric | $629 | $— |  | $65 | $99 | $(10) | $26 | $13 | $2,097 | $159
Gas | 233 | — |  | 25 | 48 | (4) | 15 | 8 | 1,150 | 61
Other | — |  | — |  | — |  | — |  | — |  | — |  | — |  | — |  | — |
Total O&R | $862 | $— |  | $90 | $147 | $(14) | $41 | $21 | $3,247 | $220
Clean Energy Businesses | $736 | $— |  | $231 | $215 | $4 | $196 | $(43) | $6,848 | $616
Con Edison Transmission | 4 | — |  | 1 | (8) | (215) | 18 | — |  | 1,348 | 3
Other (b) | (3) | — |  | — |  | (10) | (5) | 25 | (3) | 485 | — |
Total Con Edison | $12,246 | $— |  | $1,920 | $2,654 | $(401) | $1,019 | $193 | $62,895 | $4,085
As of and for the Year Ended December 31, 2019 (Millions of Dollars) | Operating revenues | Inter- segment revenues | Depreciation and amortization | Operating income | Other Income (deductions) | Interest charges | Income taxes on operating income (a) | Total assets | Capital expenditures
CECONY |  |  |  |  |  |  |  |  |
Electric | $8,062 | $17 | $1,053 | $1,758 | $(28) | $539 | $239 | $32,988 | $1,851
Gas | 2,132 | 7 | 231 | 528 | (4) | 147 | 99 | 11,090 | 1,078
Steam | 627 | 70 | 89 | 62 | (3) | 42 | 4 | 2,479 | 91
Consolidation adjustments | — |  | (94) | — |  | — |  | — |  | — |  | — |  | — |  | — |
Total CECONY | $10,821 | $— |  | $1,373 | $2,348 | $(35) | $728 | $342 | $46,557 | $3,020
O&R |  |  |  |  |  |  |  |  |
Electric | $634 | $— |  | $60 | $98 | $(7) | $27 | $15 | $2,130 | $142
Gas | 259 | — |  | 24 | 41 | (4) | 14 | 6 | 876 | 61
Other | — |  | — |  | — |  | — |  | — |  | — |  | — |  | — |  | — |
Total O&R | $893 | $— |  | $84 | $139 | $(11) | $41 | $21 | $3,006 | $203
Clean Energy Businesses | $857 | $— |  | $226 | $202 | $5 | $186 | $(58) | $6,528 | $248
Con Edison Transmission | 4 | — |  | 1 | (6) | 104 | 25 | 1 | 1,618 | 205
Other (b) | (1) | — |  | — |  | (7) | (12) | 11 | (6) | 370 | — |
Total Con Edison | $12,574 | $— |  | $1,684 | $2,676 | $51 | $991 | $300 | $58,079 | $3,676
As of and for the Year Ended December 31, 2018 (Millions of Dollars) | Operating revenues | Inter- segment revenues | Depreciation and amortization | Operating income | Other Income (deductions) | Interest charges | Income taxes on operating income (a) | Total assets | Capital expenditures
CECONY |  |  |  |  |  |  |  |  |
Electric | $7,971 | $16 | $984 | $1,799 | $(110) | $519 | $233 | $31,012 | $1,861
Gas | 2,078 | 7 | 205 | 478 | (23) | 131 | 87 | 9,710 | 1,050
Steam | 631 | 75 | 87 | 77 | (10) | 39 | 8 | 2,386 | 94
Consolidation adjustments | — |  | (98) | — |  | — |  | — |  | — |  | — |  | — |  | — |
Total CECONY | $10,680 | $— |  | $1,276 | $2,354 | $(143) | $689 | $328 | $43,108 | $3,005
O&R |  |  |  |  |  |  |  |  |
Electric | $642 | $— |  | $56 | $93 | $(14) | $25 | $14 | $2,036 | $138
Gas | 249 | — |  | 21 | 39 | (5) | 14 | 7 | 856 | 67
Other | — |  | — |  | — |  | — |  | — |  | — |  | — |  | — |  | — |
Total O&R | $891 | $— |  | $77 | $132 | $(19) | $39 | $21 | $2,892 | $205
Clean Energy Businesses | $763 | $— |  | $85 | $194 | $33 | $63 | $19 | $5,821 | $1,791
Con Edison Transmission | 4 | — |  | 1 | (7) | 91 | 20 | (1) | 1,425 | 248
Other (b) | (1) | — |  | (1) |  | (9) | (24) | 8 | 39 | 674 | — |
Total Con Edison | $12,337 | $— |  | $1,438 | $2,664 | $(62) | $819 | $406 | $53,920 | $5,249
(a)For Con Edison, the income tax expense/(benefit) on non-operating income was $(103) million, $(4) million and $(5) million in 2020, 2019 and 2018, respectively. For CECONY, the income tax expense/(benefit) on non-operating income was $(3) million, $(7) million and $(2) million in 2020, 2019 and 2018, respectively. (b)Parent company and consolidation adjustments. Other does not represent a business segment.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8924-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8981-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9031-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8844-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8657-108599 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8721-108599 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI http://asc.fasb.org/topic&trid=2134510 + Details
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