Property, plant and equipment:



	Owned Assets (a)		Right-of-use assets (b)		Total
Net book value at December 31, 2019	$	2,940,777	$	635,418	$	3,576,195
Net book value at December 31, 2018	$	2,857,266	$	167,829	$	3,025,095

a) Owned assets:



	Buildings, plant installations and machinery			Plants under construction		Ocean going vessels			Other			TOTAL
Cost at January 1, 2019	$	4,698,142		$	—	$	183,419		$	189,058		$	5,070,619
Additions	150,570			118,249		57,479			4,338			330,636
Disposals and other	(61,197		)	—		(38,951		)	(1,306		)	(101,454		)
Transfers¹	—			37,622		—			(37,622		)	—
Cost at December 31, 2019	4,787,515			155,871		201,947			154,468			5,299,801
Accumulated depreciation at January 1, 2019	2,047,735			—		48,426			117,192			2,213,353
Disposals and other	(63,169		)	—		(31,620		)	(1,597		)	(96,386		)
Depreciation	230,494			—		8,642			2,921			242,057
Accumulated depreciation at December 31, 2019	2,215,060			—		25,448			118,516			2,359,024
Net book value at December 31, 2019	$	2,572,455		$	155,871	$	176,499		$	35,952		$	2,940,777

¹ During 2019, the Company reclassified $38 million of assets, including $19 million of land, relating to the construction of Geismar 3 from Other to Plants under construction upon announcement of its final investment decision in July 2019.



	Buildings, plant installations and machinery			Plants under construction		Ocean going vessels			Other			TOTAL
Cost at January 1, 2018	$	4,648,924		$	—	$	144,423		$	131,070		$	4,924,417
Additions	180,437			—		40,284			58,349			279,070
Disposals and other	(131,219		)	—		(1,288		)	(361		)	(132,868		)
Cost at December 31, 2018	4,698,142			—		183,419			189,058			5,070,619
Accumulated depreciation at January 1, 2018	1,956,317			—		40,427			111,193			2,107,937
Disposals and other	(124,920		)	—		(1,194		)	(360		)	(126,474		)
Depreciation	216,338			—		9,193			6,359			231,890
Accumulated depreciation at December 31, 2018	2,047,735			—		$	48,426		117,192			2,213,353
Net book value at December 31, 2018	$	2,650,407		$	—	$	134,993		$	71,866		$	2,857,266

b) Right-of-use (leased) assets:



	Ocean going vessels			Terminals and tanks		Plant installations and machinery		Other			TOTAL
Cost at January 1, 2019	$	370,654		$	207,721	$	19,705	$	30,399		$	628,479
Additions	144,764			13,582		3,908		9,738			171,992
Disposals and other	(757		)	—		—		(1,617		)	(2,374		)
Cost at December 31, 2019	514,661			221,303		23,613		38,520			798,097
Accumulated depreciation at January 1, 2019	15,204			29,333		5,444		—			49,981
Disposals and other	—			—		—		—			—
Depreciation	74,439			29,907		2,423		5,929			112,698
Accumulated depreciation at December 31, 2019	89,643			59,240		7,867		5,929			162,679
Net book value at December 31, 2019	$	425,018		$	162,063	$	15,746	$	32,591		$	635,418



	Ocean going vessels		Terminals and tanks		Plant installations and machinery		Other		TOTAL
Cost at January 1, 2018	$	87,800	$	111,941	$	16,032	$	—	$	215,773
Additions	—		2,037		—		—		2,037
Disposals and other	—		—		—		—		—
Cost at December 31, 2018	87,800		113,978		16,032		—		217,810
Adjustments due to IFRS 16	282,854		93,743		3,673		30,399		410,669
Adjusted cost at January 1, 2019	370,654		207,721		19,705		30,399		628,479
Accumulated depreciation at January 1, 2018	9,351		20,777		3,799		—		33,927
Disposals and other	—		—		—		—		—
Depreciation	5,853		8,556		1,645		—		16,054
Accumulated depreciation at December 31, 2018	15,204		29,333		5,444		—		49,981
Net book value at December 31, 2018	$	72,596	$	84,645	$	10,588	$	—	$	167,829

Refer to note 2 for the impact upon adoption of IFRS 16 on the right-of-use assets and note 9 for lease obligations.