XML 85 R18.htm IDEA: XBRL DOCUMENT v3.10.0.1
Accounts Receivable, Net
 12 Months Ended
Dec. 31, 2018
Receivables [Abstract]  
Accounts Receivable, Net
(in millions of Canadian dollars)
2018

2017

Freight
$
677

$
536

Non-freight
168

176

 
845

712

Allowance for doubtful accounts
(30
)
(25
)
Total accounts receivable, net
$
815

$
687



The Company maintains an allowance for doubtful accounts based on expected collectability of accounts receivable. The Allowance for doubtful accounts is based on specific identification of uncollectable accounts, the application of historical percentages by aging category and an assessment of the current economic environment.