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INCOME TAXES - DEFERRED INCOME TAXES (Details) - CAD ($) | Dec. 31, 2018 | Jan. 01, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Deferred income tax liabilities |  |  |
Property, plant and equipment | $ (7,018,000,000) |  | $ (4,089,000,000)
Investments | (4,441,000,000) |  | (6,596,000,000)
Regulatory assets | (756,000,000) |  | (977,000,000)
Other | (192,000,000) |  | (50,000,000)
Total deferred income tax liabilities | (12,407,000,000) |  | (11,712,000,000)
Deferred income tax assets |  |  |
Financial instruments | 1,103,000,000 |  | 697,000,000
Pension and OPEB plans | 181,000,000 |  | 258,000,000
Loss carryforwards | 1,820,000,000 |  | 1,781,000,000
Other | 1,274,000,000 |  | 1,057,000,000
Total deferred income tax assets | 4,378,000,000 |  | 3,793,000,000
Less valuation allowance | (51,000,000) |  | (286,000,000)
Total deferred income tax assets, net | 4,327,000,000 |  | 3,507,000,000
Net deferred income tax liabilities | (8,080,000,000) |  | (8,205,000,000)
Total deferred income tax assets | 1,374,000,000 |  | 1,090,000,000
Total deferred income tax liabilities | (9,454,000,000) | $ (9,233,000,000) | (9,295,000,000)
Deferred taxes on unremitted earnings and currency translation adjustment | 0 |  | 0
Foreign subsidiaries' undistributed earnings on which deferred income taxes has not been provided | 5,800,000,000 |  | 2,100,000,000
Canada |  |  |
Deferred income tax assets |  |  |
Benefit of unused tax loss carryforwards recognized | 3,400,000,000 |  | 3,800,000,000
Capital loss carryforwards | 0 |  | 143,000,000
United States |  |  |
Deferred income tax assets |  |  |
Benefit of unused tax loss carryforwards recognized | 3,400,000,000 |  | 2,100,000,000
Capital loss carryforwards | $ 0 |  | $ 20,000,000

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