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REVENUES (Tables) | 6 Months Ended
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Jun. 30, 2019
Revenue from Contract with Customer [Abstract] |
Disaggregation of revenue |
| Liquids Pipelines |  | Gas Transmission and Midstream |  | Gas Distribution |  | Renewable Power Generation and Transmission |  | Energy Services |  | Eliminations and Other |  | Consolidated |
Three months ended June 30, 2019
(millions of Canadian dollars) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Transportation revenues | 2,230 |  | 1,113 |  | 171 |  | — |  | — |  | — |  | 3,514 |
Storage and other revenues | 25 |  | 46 |  | 52 |  | — |  | — |  | — |  | 123 |
Gas gathering and processing revenues | — |  | 115 |  | — |  | — |  | — |  | — |  | 115 |
Gas distribution revenue | — |  | — |  | 754 |  | — |  | — |  | — |  | 754 |
Electricity and transmission revenues | — |  | — |  | — |  | 43 |  | — |  | — |  | 43 |
Commodity sales | — |  | 3 |  | — |  | — |  | — |  | — |  | 3 |
Total revenue from contracts with customers | 2,255 |  | 1,277 |  | 977 |  | 43 |  | — |  | — |  | 4,552 |
Commodity sales | — |  | — |  | — |  | — |  | 8,413 |  | — |  | 8,413 |
Other revenues1,2 | 199 |  | 10 |  | (3 | ) | 94 |  | (7 | ) | 5 |  | 298 |
Intersegment revenues | 115 |  | 1 |  | 3 |  | — |  | 12 |  | (131 | ) | — |
Total revenues | 2,569 |  | 1,288 |  | 977 |  | 137 |  | 8,418 |  | (126 | ) | 13,263 |
| Liquids Pipelines |  | Gas Transmission and Midstream |  | Gas Distribution |  | Renewable Power Generation and Transmission |  | Energy Services |  | Eliminations and Other |  | Consolidated |
Three months ended June 30, 2018
(millions of Canadian dollars) |  |  |  |  |  |  |  |  |  |  |  |  |
Transportation revenues | 2,079 |  | 958 |  | 151 |  | — |  | — |  | — |  | 3,188 |
Storage and other revenues | 42 |  | 51 |  | 52 |  | — |  | — |  | — |  | 145 |
Gas gathering and processing revenues | — |  | 231 |  | — |  | — |  | — |  | — |  | 231 |
Gas distribution revenues | — |  | — |  | 856 |  | — |  | — |  | — |  | 856 |
Electricity and transmission revenues | — |  | — |  | — |  | 53 |  | — |  | — |  | 53 |
Commodity sales | — |  | 639 |  | — |  | — |  | — |  | — |  | 639 |
Total revenue from contracts with customers | 2,121 |  | 1,879 |  | 1,059 |  | 53 |  | — |  | — |  | 5,112 |
Commodity sales | — |  | — |  | — |  | — |  | 5,812 |  | — |  | 5,812 |
Other revenues1, 2 | (261 | ) | (17 | ) | 9 |  | 96 |  | — |  | (6 | ) | (179 | )
Intersegment revenues | 90 |  | 2 |  | 2 |  | — |  | 24 |  | (118 | ) | — |
Total revenues | 1,950 |  | 1,864 |  | 1,070 |  | 149 |  | 5,836 |  | (124 | ) | 10,745 |
| Liquids Pipelines |  | Gas Transmission and Midstream |  | Gas Distribution |  | Renewable Power Generation and Transmission |  | Energy Services |  | Eliminations and Other |  | Consolidated |
Six months ended June 30, 2019
(millions of Canadian dollars) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Transportation revenues | 4,444 |  | 2,250 |  | 420 |  | — |  | — |  | — |  | 7,114 |
Storage and other revenues | 52 |  | 99 |  | 106 |  | — |  | — |  | — |  | 257 |
Gas gathering and processing revenues | — |  | 231 |  | — |  | — |  | — |  | — |  | 231 |
Gas distribution revenue | — |  | — |  | 2,610 |  | — |  | — |  | — |  | 2,610 |
Electricity and transmission revenues | — |  | — |  | — |  | 93 |  | — |  | — |  | 93 |
Commodity sales | — |  | 3 |  | — |  | — |  | — |  | — |  | 3 |
Total revenue from contracts with customers | 4,496 |  | 2,583 |  | 3,136 |  | 93 |  | — |  | — |  | 10,308 |
Commodity sales | — |  | — |  | — |  | — |  | 15,045 |  | — |  | 15,045 |
Other revenues1,2 | 539 |  | 20 |  | 26 |  | 196 |  | (1 | ) | (14 | ) | 766 |
Intersegment revenues | 192 |  | 3 |  | 6 |  | — |  | 47 |  | (248 | ) | — |
Total revenues | 5,227 |  | 2,606 |  | 3,168 |  | 289 |  | 15,091 |  | (262 | ) | 26,119 |
| Liquids Pipelines |  | Gas Transmission and Midstream |  | Gas Distribution |  | Renewable Power Generation and Transmission |  | Energy Services |  | Eliminations and Other |  | Consolidated |
Six months ended June 30, 2018
(millions of Canadian dollars) |  |  |  |  |  |  |  |  |  |  |  |  |
Transportation revenues | 4,137 |  | 1,910 |  | 390 |  | — |  | — |  | — |  | 6,437 |
Storage and other revenues | 82 |  | 111 |  | 118 |  | — |  | — |  | — |  | 311 |
Gas gathering and processing revenues | — |  | 436 |  | — |  | — |  | — |  | — |  | 436 |
Gas distribution revenues | — |  | — |  | 2,782 |  | — |  | — |  | — |  | 2,782 |
Electricity and transmission revenues | — |  | — |  | — |  | 110 |  | — |  | — |  | 110 |
Commodity sales | — |  | 1,332 |  | — |  | — |  | — |  | — |  | 1,332 |
Total revenue from contracts with customers | 4,219 |  | 3,789 |  | 3,290 |  | 110 |  | — |  | — |  | 11,408 |
Commodity sales | — |  | — |  | — |  | — |  | 12,387 |  | — |  | 12,387 |
Other revenues1, 2 | (530 | ) | 8 |  | 11 |  | 196 |  | — |  | (9 | ) | (324 | )
Intersegment revenues | 170 |  | 4 |  | 6 |  | — |  | 81 |  | (261 | ) | — |
Total revenues | 3,859 |  | 3,801 |  | 3,307 |  | 306 |  | 12,468 |  | (270 | ) | 23,471 |
1 Includes mark-to-market gains/(losses) from our hedging program. 2 Includes revenues from lease contracts. Refer to Note 14 Leases.
| Liquids Pipelines |  | Gas Transmission and Midstream |  | Gas Distribution |  | Renewable Power Generation and Transmission |  | Energy Services |  | Consolidated |
Three months ended June 30, 2019
(millions of Canadian dollars) |  |  |  |  |  |  |  |  |  |  |  |
Revenues from products transferred at a point in time1 | — |  | 3 |  | 17 |  | — |  | — |  | 20 |
Revenues from products and services transferred over time2 | 2,255 |  | 1,274 |  | 960 |  | 43 |  | — |  | 4,532 |
Total revenue from contracts with customers | 2,255 |  | 1,277 |  | 977 |  | 43 |  | — |  | 4,552 |
| Liquids Pipelines |  | Gas Transmission and Midstream |  | Gas Distribution |  | Renewable Power Generation and Transmission |  | Energy Services |  | Consolidated |
Three months ended June 30, 2018
(millions of Canadian dollars) |  |  |  |  |  |
Revenues from products transferred at a point in time1 | — |  | 639 |  | 20 |  | — |  | — |  | 659 |
Revenues from products and services transferred over time2 | 2,121 |  | 1,240 |  | 1,039 |  | 53 |  | — |  | 4,453 |
Total revenue from contracts with customers | 2,121 |  | 1,879 |  | 1,059 |  | 53 |  | — |  | 5,112 |
| Liquids Pipelines |  | Gas Transmission and Midstream |  | Gas Distribution |  | Renewable Power Generation and Transmission |  | Energy Services |  | Consolidated |
Six months ended June 30, 2019
(millions of Canadian dollars) |  |  |  |  |  |  |  |  |  |  |
Revenues from products transferred at a point in time1 | — |  | 3 |  | 34 |  | — |  | — |  | 37 |
Revenues from products and services transferred over time2 | 4,496 |  | 2,580 |  | 3,102 |  | 93 |  | — |  | 10,271 |
Total revenue from contracts with customers | 4,496 |  | 2,583 |  | 3,136 |  | 93 |  | — |  | 10,308 |
| Liquids Pipelines |  | Gas Transmission and Midstream |  | Gas Distribution |  | Renewable Power Generation and Transmission |  | Energy Services |  | Consolidated |
Six months ended June 30, 2018
(millions of Canadian dollars) |  |  |  |  |  |
Revenues from products transferred at a point in time1 | — |  | 1,332 |  | 45 |  | — |  | — |  | 1,377 |
Revenues from products and services transferred over time2 | 4,219 |  | 2,457 |  | 3,245 |  | 110 |  | — |  | 10,031 |
Total revenue from contracts with customers | 4,219 |  | 3,789 |  | 3,290 |  | 110 |  | — |  | 11,408 |
1 Revenues from sales of crude oil, natural gas and NGLs. 2 Revenues from crude oil and natural gas pipeline transportation, storage, natural gas gathering, compression and treating, natural gas distribution, natural gas storage services and electricity sales.
Contract with customer, asset and liability |
| Receivables |  | Contract Assets |  | Contract Liabilities |
(millions of Canadian dollars) |  |  |
Balance as at December 31, 2018 | 1,929 |  | 191 |  | 1,297 |
Balance as at June 30, 2019 | 1,845 |  | 191 |  | 1,275 |

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