Accounts Receivable, Net (Tables)

3 Months Ended

Mar. 31, 2020

Accounts Receivable, after Allowance for Credit Loss [Abstract]

Accounts Receivable, Allowance for Credit Loss

(in millions of Canadian dollars)	Freight			Non-freight			Total
Accounts receivable, as at March 31, 2020	$	724		$	202		$	926
Allowance for credit losses
Restated, as at January 1, 2020 (Note 2)	(27		)	(16		)	(43		)
Current period credit loss provision, net	—			2			2
Allowance for credit losses, as at March 31, 2020	(27		)	(14		)	(41		)
Total accounts receivable, net as at March 31, 2020	$	697		$	188		$	885
Total accounts receivable, net restated, as at January 1, 2020	$	610		$	194		$	804