Inventories (Tables)

12 Months Ended

Dec. 31, 2022

Inventories [Abstract]

Summary of Inventories

(CAD$ in millions)	December 31, 2022		December 31, 2021
Supplies	$	1,045	$	797
Raw materials	278		250
Work in process	857		741
Finished products	718		728
	2,898		2,516
Less non-current portion (Note 14)	(213)		(126)
	$	2,685	$	2,390