Provisions (Tables)

12 Months Ended

Dec. 31, 2024

Other Provisions, Contingent Liabilities And Contingent Assets [Abstract]

Summary of Movements in Provisions

(CAD$ in millions)	2024		2023
At December 31	$	2,626	$	4,198
Less current portion of provisions	(187)		(347)
Non-current provisions	$	2,439	$	3,851

The following table summarizes the movements in provisions for the year ended December 31, 2024:

(CAD$ in millions)	Decommissioning and Restoration Provisions		Other Provisions		Total
At January 1, 2024	$	3,907	$	291	$	4,198
Settled during the year	(123)		(27)		(150)
Change in discount rate	(397)		—		(397)
Change in amount and timing of cash flows	374		40		414
Accretion	177		5		182
Change from the NSC/POSCO transaction	127		—		127
Sale of steelmaking coal business	(1,828)		(28)		(1,856)
Other	(4)		—		(4)
Changes in foreign exchange rates	95		17		112
At December 31, 2024	$	2,328	$	298	$	2,626
Less current portion of provisions	(149)		(38)		(187)
Non-current provisions	$	2,179	$	260	$	2,439