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AQUISITIONS AND DISPOSITIONS - Assets Held for Sale (Details) - Disposal Group, Held-for-sale, Not Discontinued Operations - CAD ($) $ in Millions | Sep. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Accounts receivable and other (current assets held for sale) | $ 72 | $ 117
Deferred amounts and other assets (long-term assets held for sale) | 2,473 | 2,383
Accounts payable and other (current liabilities held for sale) | (47) | (63)
Other long-term liabilities (long-term liabilities held for sale) | (90) | (96)
Net assets held for sale | 2,408 | 2,341
Property, plant and equipment, noncurrent | $ 2,200 | $ 2,100

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