Accounts Receivable, Net

6 Months Ended

Jun. 30, 2021

Accounts Receivable, after Allowance for Credit Loss [Abstract]

Accounts Receivable, Net

Accounts receivable, net

	As at June 30, 2021						As at December 31, 2020
(in millions of Canadian dollars)	Freight		Non-freight		Total		Freight		Non-freight		Total
Total accounts receivable	$	614	$	179	$	793	$	662	$	203	$	865
Allowance for credit losses	(23)		(15)		(38)		(25)		(15)		(40)
Total accounts receivable, net	$	591	$	164	$	755	$	637	$	188	$	825

	For the three months ended June 30, 2021						For the three months ended June 30, 2020
(in millions of Canadian dollars)	Freight		Non-freight		Total		Freight		Non-freight		Total
Allowance for credit losses, opening balance	$	(24)	$	(15)	$	(39)	$	(27)	$	(14)	$	(41)
Current period credit loss provision, net	1		—		1		1		—		1
Allowance for credit losses, closing balance	$	(23)	$	(15)	$	(38)	$	(26)	$	(14)	$	(40)

	For the six months ended June 30, 2021						For the six months ended June 30, 2020
(in millions of Canadian dollars)	Freight		Non-freight		Total		Freight		Non-freight		Total
Allowance for credit losses, opening balance	$	(25)	$	(15)	$	(40)	$	(27)	$	(16)	$	(43)
Current period credit loss provision, net	2		—		2		1		2		3
Allowance for credit losses, closing balance	$	(23)	$	(15)	$	(38)	$	(26)	$	(14)	$	(40)