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COMPONENTS OF ACCUMULATED OTHER COMPREHENSIVE INCOME (Tables) | 6 Months Ended
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Jun. 30, 2019
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 six months ended June 30, 2019 and 2018 are as follows:
| 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 | (618 | ) | 252 |  | (2,508 | ) | 22 |  | — |  | (2,852 | )
Other comprehensive (income)/loss reclassified to earnings |  |  |  |  |  |  |
Interest rate contracts1 | 72 |  | — |  | — |  | — |  | — |  | 72 |
Foreign exchange contracts3 | 2 |  | — |  | — |  | — |  | — |  | 2 |
Other contracts4 | (3 | ) | — |  | — |  | — |  | — |  | (3 | )
Amortization of pension and OPEB actuarial loss and prior service costs5 | — |  | — |  | — |  | — |  | 57 |  | 57 |
| (547 | ) | 252 |  | (2,508 | ) | 22 |  | 57 |  | (2,724 | )
Tax impact |  |  |  |  |  |  |  |  |  |  |  |
Income tax on amounts retained in AOCI | 196 |  | (31 | ) | — |  | (5 | ) | — |  | 160 |
Income tax on amounts reclassified to earnings | (25 | ) | — |  | — |  | — |  | (14 | ) | (39 | )
| 171 |  | (31 | ) | — |  | (5 | ) | (14 | ) | 121 |
Other | — |  | — |  | — |  | — |  | 55 |  | 55 |
Balance as at June 30, 2019 | (1,146 | ) | (377 | ) | 1,815 |  | 51 |  | (219 | ) | 124 |
| 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, 2018 | (644 | ) | (139 | ) | 77 |  | 10 |  | (277 | ) | (973 | )
Other comprehensive income/(loss) retained in AOCI | 100 |  | (328 | ) | 2,354 |  | 3 |  | — |  | 2,129 |
Other comprehensive (income)/loss reclassified to earnings |  |  |  |  |  |  |
Interest rate contracts1 | 67 |  | — |  | — |  | — |  | — |  | 67 |
Commodity contracts2 | (1 | ) | — |  | — |  | — |  | — |  | (1 | )
Foreign exchange contracts3 | 5 |  | — |  | — |  | — |  | — |  | 5 |
Other contracts4 | 3 |  | — |  | — |  | — |  | — |  | 3 |
Amortization of pension and OPEB actuarial loss and prior service costs5 | — |  | — |  | — |  | — |  | 31 |  | 31 |
| 174 |  | (328 | ) | 2,354 |  | 3 |  | 31 |  | 2,234 |
Tax impact |  |  |  |  |  |
Income tax on amounts retained in AOCI | (13 | ) | 45 |  | — |  | 10 |  | — |  | 42 |
Income tax on amounts reclassified to earnings | (18 | ) | — |  | — |  | — |  | (8 | ) | (26 | )
| (31 | ) | 45 |  | — |  | 10 |  | (8 | ) | 16 |
Balance as at June 30, 2018 | (501 | ) | (422 | ) | 2,431 |  | 23 |  | (254 | ) | 1,277 |
1 Reported within Interest expense in the Consolidated Statements of Earnings. 2 Reported within Commodity costs in the Consolidated Statements of Earnings. 3 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 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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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580 + Details
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