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COMPONENTS OF ACCUMULATED OTHER COMPREHENSIVE INCOME (Tables) | 9 Months Ended
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Sep. 30, 2020
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] |
Schedule of changes in AOCI attributable to Enbridge Inc. common shareholders | Changes in Accumulated Other Comprehensive Income (AOCI) attributable to our common shareholders for the nine months ended September 30, 2020 and 2019 are as follows:
| Cash Flow Hedges | Excluded Components of Fair Value Hedges | Net Investment Hedges | Cumulative Translation Adjustment | Equity Investees | Pension and OPEB Adjustment | Total
(millions of Canadian dollars) |  |  |  |  |  |  |
Balance as at January 1, 2020 | (1,073) |  | — |  | (317) |  | 1,396 |  | 67 |  | (345) |  | (272) |
Other comprehensive income/(loss) retained in AOCI | (696) |  | 7 |  | (228) |  | 1,760 |  | 8 |  | — |  | 851 |
Other comprehensive (income)/loss reclassified to earnings |  |  |  |  |  |  |
Interest rate contracts 1 | 179 |  | — |  | — |  | — |  | — |  | — |  | 179 |
Commodity contracts 2 | (1) |  | — |  | — |  | — |  | — |  | — |  | (1) |
Foreign exchange contracts 3 | 3 |  | — |  | — |  | — |  | — |  | — |  | 3 |
Other contracts 4 | (1) |  | — |  | — |  | — |  | — |  | — |  | (1) |
Amortization of pension and other postretirement benefits (OPEB) actuarial loss and prior service costs 5 | — |  | — |  | — |  | — |  | — |  | 13 |  | 13 |
| (516) |  | 7 |  | (228) |  | 1,760 |  | 8 |  | 13 |  | 1,044 |
Tax impact |  |  |  |  |  |  |
Income tax on amounts retained in AOCI | 167 |  | — |  | 7 |  | — |  | (2) |  | — |  | 172 |
Income tax on amounts reclassified to earnings | (42) |  | — |  | — |  | — |  | — |  | (3) |  | (45) |
| 125 |  | — |  | 7 |  | — |  | (2) |  | (3) |  | 127 |
Balance as at September 30, 2020 | (1,464) |  | 7 |  | (538) |  | 3,156 |  | 73 |  | (335) |  | 899 |
| Cash Flow Hedges | Net Investment Hedges | Cumulative Translation Adjustment | Equity Investees | Pension and OPEB Adjustment | Total
(millions of Canadian dollars) |  |  |  |  |  |
Balance as at January 1, 2019 | (770) |  | (598) |  | 4,323 |  | 34 |  | (317) |  | 2,672 |
Other comprehensive income/(loss) retained in AOCI | (845) |  | 167 |  | (1,831) |  | 26 |  | — |  | (2,483) |
Other comprehensive (income)/loss reclassified to earnings |  |  |  |  |  |
Interest rate contracts 1 | 108 |  | — |  | — |  | — |  | — |  | 108 |
Foreign exchange contracts 3 | 4 |  | — |  | — |  | — |  | — |  | 4 |
Other contracts 4 | (4) |  | — |  | — |  | — |  | — |  | (4) |
Amortization of pension and OPEB actuarial loss and prior service costs 5 | — |  | — |  | — |  | — |  | 59 |  | 59 |
| (737) |  | 167 |  | (1,831) |  | 26 |  | 59 |  | (2,316) |
Tax impact |  |  |  |  |  |
Income tax on amounts retained in AOCI | 254 |  | (20) |  | — |  | (7) |  | — |  | 227 |
Income tax on amounts reclassified to earnings | (34) |  | — |  | — |  | — |  | (15) |  | (49) |
| 220 |  | (20) |  | — |  | (7) |  | (15) |  | 178 |
Other | — |  | — |  | — |  | (7) |  | 55 |  | 48 |
Balance as at September 30, 2019 | (1,287) |  | (451) |  | 2,492 |  | 46 |  | (218) |  | 582 |
1 Reported within Interest expense in the Consolidated Statements of Earnings. 2 Reported within Transportation and other services revenue, Commodity sales revenues, Commodity costs and Operating and administrative expense in the Consolidated Statements of Earnings. 3 Reported within Transportation and other services revenues and Net foreign currency gain/(loss) in the Consolidated Statements of Earnings. 4 Reported within Operating and administrative expense in the Consolidated Statements of Earnings. 5 These components are included in the computation of net periodic benefit costs and are reported within Other income/(expense) in the Consolidated Statements of Earnings.

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