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INCOME TAXES - DEFERRED INCOME TAXES (Details) - CAD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Deferred income tax liabilities |  |
Property, plant and equipment | $ (7,290) | $ (7,018)
Investments | (4,620) | (4,441)
Regulatory assets | (1,052) | (756)
Other | (40) | (192)
Total deferred income tax liabilities | (13,002) | (12,407)
Deferred income tax assets |  |
Financial instruments | 679 | 1,103
Pension and OPEB plans | 206 | 181
Loss carryforwards | 1,693 | 1,820
Other | 1,641 | 1,274
Total deferred income tax assets | 4,219 | 4,378
Less valuation allowance | (84) | (51)
Total deferred income tax assets, net | 4,135 | 4,327
Net deferred income tax liabilities | (8,867) | (8,080)
Total deferred income tax assets | 1,000 | 1,374
Total deferred income tax liabilities | (9,867) | (9,454)
Foreign subsidiaries' undistributed earnings on which deferred income taxes has not been provided | 5,300 | 5,800
Canada |  |
Deferred income tax assets |  |
Benefit of unused tax loss carryforwards recognized | 3,200 | 3,400
United States |  |
Deferred income tax assets |  |
Benefit of unused tax loss carryforwards recognized | $ 3,600 | $ 3,400

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