Property, plant and equipment (Tables)

12 Months Ended

Dec. 31, 2024

Property, plant and equipment [abstract]

Schedule of property, plant and equipment

Property, plant and equipment are amortized on a straight-line basis over their estimated useful lives as follows:

Buildings	10 - 30 years
Manufacturing plant, equipment and machinery	6 - 25 years
Fixtures, mobile and other equipment	3 - 10 years
Roads and bridges	Not exceeding 40 years
Major maintenance shutdowns	1 - 2 years

Supporting Information

	Manufacturing plant, equipment and machinery		Construction- in-progress		Roads and bridges		Other		Total
As at December 31, 2022	$	3,520	$	359	$	44	$	59	$	3,982
Acquisition (note 3)	23		—		—		36		58
Additions	257		244		13		1		516
Amortization1	(451)		—		(11)		(1)		(462)
Impairment (note 17)	(202)		(7)		—		—		(209)
Transfer to disposal groups held for sale (note 6)	(50)		—		(3)		(1)		(54)
Foreign exchange	17		1		—		2		19
Disposals	(8)		—		—		(1)		(9)
Transfers	217		(222)		2		(1)		(4)
As at December 31, 2023	$	3,319	$	376	$	46	$	94	$	3,835
As at December 31, 2023
Cost	$	6,524	$	376	$	156	$	95	$	7,151
Accumulated amortization	(3,205)		—		(110)		(1)		(3,316)
Net	$	3,319	$	376	$	46	$	94	$	3,835
As at December 31, 2023	$	3,319	$	376	$	46	$	94	$	3,835
CPP agreement (note 3)	12		2		—		—		15
Additions	73		411		11		—		495
Amortization1	(462)		—		(7)		(1)		(470)
Impairment (note 17)	(15)		—		—		—		(15)
Foreign exchange	(11)		—		—		(5)		(16)
Disposals	(2)		—		—		—		(2)
Transfers	343		(343)		—		—		—
As at December 31, 2024	$	3,259	$	445	$	49	$	89	$	3,842
As at December 31, 2024
Cost	$	6,939	$	445	$	165	$	91	$	7,641
Accumulated amortization	(3,680)		—		(116)		(2)		(3,798)
Net	$	3,259	$	445	$	49	$	89	$	3,842

1.Amortization of $462 million relates to cost of products sold and $8 million relates to selling, general and administration expense (2023 - $451 million and $11 million respectively).