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v3.19.3.a.u2

Cash Flow Information (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Cash flows from (used in) operating activities [abstract] |  |  |
Accounts receivable | $ 261 | $ 58 | $ (228)
Prepaid expenses | 0 | 19 | (75)
Income taxes receivable | (6) | 0 | 8
Inventory | (13) | (21) | (7)
Accounts payable, accrued liabilities and provisions | (130) | (97) | 186
Income taxes payable | 9 | (3) | 2
Increase (decrease) in working capital | $ 121 | $ (44) | $ (114)

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- Definition The increase (decrease) in working capital. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2018-01-01 -Paragraph 20 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2018-03-01&anchor=para_20&doctype=Standard -URIDate 2018-03-16 + Details
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