Accounts receivable, net (Details) - CAD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Accounts Receivable, after Allowance for Credit Loss [Abstract]
Total accounts receivable	$ 1,726	$ 1,057
Allowance for credit losses	(70)	(41)
Total accounts receivable, net	$ 1,656	$ 1,016