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COMPONENTS OF ACCUMULATED OTHER COMPREHENSIVE INCOME (Tables) | 3 Months Ended
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Mar. 31, 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 Income (AOCI) attributable to our common shareholders for the three months ended March 31, 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 | 493 |  | (1) |  | 105 |  | (774) |  | (26) |  | — |  | (203) |
Other comprehensive (income)/loss reclassified to earnings |  |  |  |  |  |  |
Interest rate contracts 1 | 63 |  | — |  | — |  | — |  | — |  | — |  | 63 |
Commodity contracts 2 | 1 |  | — |  | — |  | — |  | — |  | — |  | 1 |
Foreign exchange contracts 3 | 1 |  | — |  | — |  | — |  | — |  | — |  | 1 |
Amortization of pension and OPEB actuarial loss and prior service costs 4 | — |  | — |  | — |  | — |  | — |  | 7 |  | 7 |
Other | 17 |  | — |  | — |  | (20) |  | 3 |  | — |  | — |
| 575 |  | (1) |  | 105 |  | (794) |  | (23) |  | 7 |  | (131) |
Tax impact |  |  |  |  |  |  |
Income tax on amounts retained in AOCI | (120) |  | — |  | (12) |  | — |  | 4 |  | — |  | (128) |
Income tax on amounts reclassified to earnings | (13) |  | — |  | — |  | — |  | — |  | (2) |  | (15) |
| (133) |  | — |  | (12) |  | — |  | 4 |  | (2) |  | (143) |
Balance as at March 31, 2021 | (884) |  | 4 |  | (122) |  | (226) |  | 47 |  | (494) |  | (1,675) |
| 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 | (693) |  | 3 |  | (715) |  | 5,459 |  | (7) |  | — |  | 4,047 |
Other comprehensive loss reclassified to earnings |  |  |  |  |  |  |
Interest rate contracts 1 | 43 |  | — |  | — |  | — |  | — |  | — |  | 43 |
Foreign exchange contracts 3 | 1 |  | — |  | — |  | — |  | — |  | — |  | 1 |
Amortization of pension and OPEB actuarial loss and prior service costs 4 | — |  | — |  | — |  | — |  | — |  | 4 |  | 4 |
| (649) |  | 3 |  | (715) |  | 5,459 |  | (7) |  | 4 |  | 4,095 |
Tax impact |  |  |  |  |  |  |
Income tax on amounts retained in AOCI | 182 |  | — |  | — |  | — |  | (3) |  | — |  | 179 |
Income tax on amounts reclassified to earnings | (12) |  | — |  | — |  | — |  | — |  | (1) |  | (13) |
| 170 |  | — |  | — |  | — |  | (3) |  | (1) |  | 166 |
Balance as at March 31, 2020 | (1,552) |  | 3 |  | (1,032) |  | 6,855 |  | 57 |  | (342) |  | 3,989 |
1 Reported within Interest expense in the Consolidated Statements of Earnings. 2 Reported within Transportation and other services revenues, 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 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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