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TRADE AND OTHER RECEIVABLES (Details) - CAD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
TRADE AND OTHER RECEIVABLES    
Trade $ 668.8 $ 542.4
Holdbacks 80.9 64.6
Unbilled revenue 129.7 113.9
Expected credit loss (12.1) (7.5)
Trade and other receivables, net of allowance $ 867.3 $ 713.4