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real estate joint ventures - Investment activity (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Related to real estate joint ventures' statements of income and other comprehensive income |  |
Comprehensive income (loss) attributable to us | $ (1,898) | $ (1,395)
Real estate joint ventures |  |
Related to real estate joint ventures' statements of income and other comprehensive income |  |
Comprehensive income (loss) attributable to us | 171 | 2
Items not affecting currently reported cash flows |  |
Recognition of gain initially deferred on our real estate initially contributed |  | 1
Construction credit facilities financing costs charged by us and other | 3 |
Cash flows in the current reporting period |  |
Construction credit facilities amounts advanced | 22 | 26
Financing costs paid to us | (3) |
Funds repaid to us and earnings distributed | (181) | (18)
Net increase (decrease) | 12 | 11
Real estate joint ventures carrying amounts |  |
Balance, beginning of period | 62 | 51
Balance, end of period | 74 | 62
Real estate joint ventures | Equity |  |
Related to real estate joint ventures' statements of income and other comprehensive income |  |
Comprehensive income (loss) attributable to us | 171 | 2
Items not affecting currently reported cash flows |  |
Recognition of gain initially deferred on our real estate initially contributed |  | 1
Cash flows in the current reporting period |  |
Funds repaid to us and earnings distributed | (181) | (18)
Net increase (decrease) | (10) | (15)
Real estate joint ventures carrying amounts |  |
Balance, beginning of period | 15 | 30
Balance, end of period | 5 | 15
Real estate joint ventures | Loans and receivables |  |
Items not affecting currently reported cash flows |  |
Construction credit facilities financing costs charged by us and other | 3 |
Cash flows in the current reporting period |  |
Construction credit facilities amounts advanced | 22 | 26
Financing costs paid to us | (3) |
Net increase (decrease) | 22 | 26
Real estate joint ventures carrying amounts |  |
Balance, beginning of period | 47 | 21
Balance, end of period | 69 | 47
TELUS Garden real estate joint venture |  |
Real estate joint ventures carrying amounts |  |
Related party revenue from TELUS Garden office tenancy | $ 7 | $ 12

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- Definition The amount of leases where the entity was the lessee in related party transactions. [Refer: Related parties [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 24 -IssueDate 2018-01-01 -Paragraph 21 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=24&date=2018-03-01&anchor=para_21_d&doctype=Standard -URIDate 2018-03-16 + Details
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