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COMPONENTS OF ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables) | 9 Months Ended
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Sep. 30, 2021
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 loss (AOCI) attributable to our common shareholders for the nine months ended September 30, 2021 and 2020 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, 2021 | (1,326) |  | 5 |  | (215) |  | 568 |  | 66 |  | (499) |  | (1,401) |
Other comprehensive income/(loss) retained in AOCI | 284 |  | (3) |  | 18 |  | (340) |  | (33) |  | — |  | (74) |
Other comprehensive loss/(income) reclassified to earnings |  |  |  |  |  |  |
Interest rate contracts 1 | 218 |  | — |  | — |  | — |  | — |  | — |  | 218 |
Commodity contracts 2 | (4) |  | — |  | — |  | — |  | — |  | — |  | (4) |
Foreign exchange contracts 3 | 4 |  | — |  | — |  | — |  | — |  | — |  | 4 |
Other contracts 4 | 1 |  | — |  | — |  | — |  | — |  | — |  | 1 |
Amortization of pension and OPEB actuarial loss and prior service costs 5 | — |  | — |  | — |  | — |  | — |  | 21 |  | 21 |
Other | 17 |  | — |  | — |  | (20) |  | 3 |  | — |  | — |
| 520 |  | (3) |  | 18 |  | (360) |  | (30) |  | 21 |  | 166 |
Tax impact |  |  |  |  |  |  |
Income tax on amounts retained in AOCI | (72) |  | — |  | (2) |  | — |  | 5 |  | — |  | (69) |
Income tax on amounts reclassified to earnings | (51) |  | — |  | — |  | — |  | — |  | (5) |  | (56) |
| (123) |  | — |  | (2) |  | — |  | 5 |  | (5) |  | (125) |
Balance as at September 30, 2021 | (929) |  | 2 |  | (199) |  | 208 |  | 41 |  | (483) |  | (1,360) |
| 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 loss/(income) 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 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 |
1 Reported within Interest expense in the Consolidated Statements of Earnings. 2 Reported within Transportation and other services revenues, Commodity sales revenue, 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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