Accounts Receivable, Net (Tables)

6 Months Ended

Jun. 30, 2022

Accounts Receivable, after Allowance for Credit Loss [Abstract]

Schedule of Accounts Receivable, Net

	As at June 30, 2022						As at December 31, 2021
(in millions of Canadian dollars)	Freight		Non-freight		Total		Freight		Non-freight		Total
Total accounts receivable	$	736	$	265	$	1,001	$	614	$	239	$	853
Allowance for credit losses	(24)		(15)		(39)		(20)		(14)		(34)
Total accounts receivable, net	$	712	$	250	$	962	$	594	$	225	$	819

	For the three months ended June 30, 2022						For the three months ended June 30, 2021
(in millions of Canadian dollars)	Freight		Non-freight		Total		Freight		Non-freight		Total
Allowance for credit losses, opening balance	$	(22)	$	(14)	$	(36)	$	(24)	$	(15)	$	(39)
Current period credit loss provision, net	(2)		(1)		(3)		1		—		1
Allowance for credit losses, closing balance	$	(24)	$	(15)	$	(39)	$	(23)	$	(15)	$	(38)

Allowance for Credit Losses

	For the six months ended June 30, 2022						For the six months ended June 30, 2021
(in millions of Canadian dollars)	Freight		Non-freight		Total		Freight		Non-freight		Total
Allowance for credit losses, opening balance	$	(20)	$	(14)	$	(34)	$	(25)	$	(15)	$	(40)
Current period credit loss provision, net	(4)		(1)		(5)		2		—		2
Allowance for credit losses, closing balance	$	(24)	$	(15)	$	(39)	$	(23)	$	(15)	$	(38)