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Trade and Other Receivables
 12 Months Ended
Dec. 31, 2020
Subclassifications of assets, liabilities and equities [abstract]  
Trade and Other Receivables Trade and Other Receivables
December 31
2020		December 31
2019
$
$
Trade receivables, net of expected credit losses of $3.0 (2019 – $2.2)
702.7 787.3 
Holdbacks, current19.7 20.6 
Other15.6 9.8 
Trade and other receivables738.0 817.7 

The aging analysis of gross trade receivables is as follows:
Total
$		1–30
$		31–60
$		61–90
$		91–120
$		121+
$
December 31, 2020705.7 389.5 160.3 60.9 25.9 69.1 
December 31, 2019789.5 395.9 221.1 63.5 27.8 81.2 

Information about the Company’s exposure to credit risks and impairment losses for trade and other receivables is included in note 25.