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Trade and other receivables (Tables)
 12 Months Ended
Dec. 31, 2020
Subclassifications of assets, liabilities and equities [abstract]  
Schedule of trade and other receivables
FOR THE YEAR ENDED DECEMBER 31 NOTE 2020 2019
Trade receivables (1)
3,414  2,981 
Allowance for revenue adjustments (185) (104)
Allowance for doubtful accounts 28 (149) (62)
Commodity taxes receivable 122  12 
Current tax receivable 92  23 
Other accounts receivable 234  188 
Total trade and other receivables 3,528  3,038 
(1)The details of securitized trade receivables are set out in Note 23, Debt due within one year.
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The following table summarizes our wireless device financing plan receivables at December 31, 2020.
FOR THE YEAR ENDED DECEMBER 31 NOTE 2020 2019
Current 649  85 
Non-current 20 399  65 
Total wireless device financing plan receivables (1)
 1,048  150 
(1) Excludes allowance for doubtful accounts and allowance for revenue adjustments on the current portion of $28 million and $9 million at December 31, 2020 and December 31, 2019, respectively, and allowance for doubtful accounts and allowance for revenue adjustments on the non-current portion of $17 million and $5 million at December 31, 2020 and December 31, 2019, respectively.