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COMPONENTS OF ACCUMULATED OTHER COMPREHENSIVE INCOME/(LOSS) (Tables) | 12 Months Ended
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Dec. 31, 2023
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] |
Schedule of Changes in AOCI Attributable to Enbridge Common Shareholders | Changes in AOCI attributable to our common shareholders for the years ended December 31, 2023, 2022 and 2021 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, 2023 | 121 |  | (35) |  | (1,137) |  | 4,348 |  | 5 |  | 218 |  | 3,520 |
Other comprehensive income/(loss) retained in AOCI | 232 |  | 62 |  | 409 |  | (1,695) |  | 6 |  | (158) |  | (1,144) |
Other comprehensive (income)/loss reclassified to earnings |  |  |  |  |  |  |
Interest rate contracts 1 | 28 |  | — |  | — |  | — |  | — |  | — |  | 28 |
Foreign exchange contracts 2 | — |  | (47) |  | — |  | — |  | — |  | — |  | (47) |
Amortization of pension and OPEB actuarial gain 3 | — |  | — |  | — |  | — |  | — |  | (24) |  | (24) |
| 260 |  | 15 |  | 409 |  | (1,695) |  | 6 |  | (182) |  | (1,187) |
Tax impact |  |  |  |  |  |  |
Income tax on amounts retained in AOCI | (47) |  | (14) |  | — |  | — |  | — |  | 28 |  | (33) |
Income tax on amounts reclassified to earnings | (14) |  | 11 |  | — |  | — |  | — |  | 6 |  | 3 |
| (61) |  | (3) |  | — |  | — |  | — |  | 34 |  | (30) |
Balance as at December 31, 2023 | 320 |  | (23) |  | (728) |  | 2,653 |  | 11 |  | 70 |  | 2,303 |
| 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, 2022 | (897) |  | — |  | (166) |  | 56 |  | (5) |  | (84) |  | (1,096) |
Other comprehensive income/(loss) retained in AOCI | 1,125 |  | (35) |  | (971) |  | 4,292 |  | (6) |  | 411 |  | 4,816 |
Other comprehensive (income)/loss reclassified to earnings |  |  |  |  |  |  |
Interest rate contracts 1 | 186 |  | — |  | — |  | — |  | — |  | — |  | 186 |
Foreign exchange contracts 2 | (4) |  | — |  | — |  | — |  | — |  | — |  | (4) |
Other contracts 4 | 4 |  | — |  | — |  | — |  | — |  | — |  | 4 |
Amortization of pension and OPEB actuarial gain 3 | — |  | — |  | — |  | — |  | — |  | (14) |  | (14) |
Other | — |  | — |  | — |  | — |  | 16 |  | — |  | 16 |
| 1,311 |  | (35) |  | (971) |  | 4,292 |  | 10 |  | 397 |  | 5,004 |
Tax impact |  |  |  |  |  |  |
Income tax on amounts retained in AOCI | (250) |  | — |  | — |  | — |  | — |  | (99) |  | (349) |
Income tax on amounts reclassified to earnings | (43) |  | — |  | — |  | — |  | — |  | 4 |  | (39) |
| (293) |  | — |  | — |  | — |  | — |  | (95) |  | (388) |
Balance as at December 31, 2022 | 121 |  | (35) |  | (1,137) |  | 4,348 |  | 5 |  | 218 |  | 3,520 |
| 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 | 238 |  | (5) |  | 49 |  | (492) |  | (12) |  | 520 |  | 298 |
Other comprehensive (income)/loss reclassified to earnings |  |  |  |  |  |  |
Interest rate contracts 1 | 296 |  | — |  | — |  | — |  | — |  | — |  | 296 |
Commodity contracts 5 | 1 |  | — |  | — |  | — |  | — |  | — |  | 1 |
Foreign exchange contracts 2 | 5 |  | — |  | — |  | — |  | — |  | — |  | 5 |
Other contracts 4 | 2 |  | — |  | — |  | — |  | — |  | — |  | 2 |
Equity investment disposal | — |  | — |  | — |  | — |  | (66) |  | — |  | (66) |
Amortization of pension and OPEB actuarial loss and prior service costs 3 | — |  | — |  | — |  | — |  | — |  | 28 |  | 28 |
Other | 17 |  | — |  | — |  | (20) |  | 3 |  | — |  | — |
| 559 |  | (5) |  | 49 |  | (512) |  | (75) |  | 548 |  | 564 |
Tax impact |  |  |  |  |  |  |
Income tax on amounts retained in AOCI | (61) |  | — |  | — |  | — |  | — |  | (126) |  | (187) |
Income tax on amounts reclassified to earnings | (69) |  | — |  | — |  | — |  | 4 |  | (7) |  | (72) |
| (130) |  | — |  | — |  | — |  | 4 |  | (133) |  | (259) |
Balance as at December 31, 2021 | (897) |  | — |  | (166) |  | 56 |  | (5) |  | (84) |  | (1,096) |
1 Reported within Interest expense in the Consolidated Statements of Earnings. 2 Reported within Transportation and other services revenues and Other income/(expense) in the Consolidated Statements of Earnings. 3 These components are included in the computation of net periodic benefit (credit)/cost and are reported within Other income/(expense) in the Consolidated Statements of Earnings. 4 Reported within Operating and administrative expense in the Consolidated Statements of Earnings. 5 Reported within Transportation and other services revenues, Commodity sales, Commodity costs and Operating and administrative expense in the Consolidated Statements of Earnings.

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