Accounts receivable (Tables)

12 Months Ended

Dec. 31, 2023

Subclassifications of assets, liabilities and equities [abstract]

Disclosure Of Detailed Information On Trade And Other Receivables


As at (millions)	2023		2022
Accounts receivable – billed	$	278	$	223
Accounts receivable – unbilled	194		201
Other receivables	28		5
	500		429
Allowance for doubtful accounts	(2)		(1)
Total	$	498	$	428

The following table presents an analysis of the age of customer accounts receivable. Any late payment charges are levied at a negotiated rate on outstanding non-current customer account balances.


As at (millions)	2023		2022
Customer accounts receivable – billed, net of allowance for doubtful accounts
Less than 30 days past billing date	$	174	$	154
30-60 days past billing date	78		44
61-90 days past billing date	11		12
More than 90 days past billing date	13		12
	276		222
Accounts receivable – unbilled	194		201
Other receivables	28		5
Total	$	498	$	428

Disclosure Of Detailed Information On Allowance for Doubtful Accounts

The following table presents a summary of the activity related to our allowance for doubtful accounts:


Years Ended December 31 (millions)	2023		2022
Balance, beginning of year	$	1	$	2
Additions	1		—

Write-off	—		(1)
Balance, end of year	$	2	$	1