Trade and other receivables (Tables)

12 Months Ended

Dec. 31, 2018

Subclassifications of assets, liabilities and equities [abstract]

Schedule of trade and other receivables

AS AT	NOTE	December 31, 2018		December 31, 2017		January 1, 2017
Trade receivables(1)		3,026		3,135		2,973
Allowance for doubtful accounts	26	(51	)	(54	)	(60	)
Allowance for revenue adjustments		(106	)	(84	)	(83	)
Current tax receivable		14		31		35
Other accounts receivable		123		101		123
Total trade and other receivables		3,006		3,129		2,988

(1) The details of securitized trade receivables are set out in Note 21,Debt due within one year.