Property, plant and equipment, net

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Property, plant and equipment, net consist of the following:



	December 31,
In millions	2017			2016⁽¹⁾
Machinery and equipment	$	792.5		$	764.0
Buildings and leasehold equipment	115.0			111.2
Land and land improvements	18.0			17.9
Construction in progress	35.8			26.3
Total cost	961.3			919.4
Less: accumulated depreciation	(522.8		)	(496.6		)
Property, plant and equipment, net ⁽²⁾	$	438.5		$	422.8

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(1)	Certain prior year amounts have been revised to conform with current year's presentation.

(2)

Includes capital leases related to machinery and equipment at our Wickliffe, Kentucky facility of $7.6 million and $9.2 million, net of accumulated depreciation of $62.5 million and $64.0 million at December 31, 2017 and 2016, respectively. Also includes capital leases related to our Waynesboro, Georgia manufacturing facility for (a) machinery and equipment of $5.7 million and $0.4 million, net of accumulated depreciation of $0.2 million and zero, and (b) construction in progress of $2.1 million and $3.4 million at December 31, 2017 and 2016, respectively. The balance as of December 31, 2016, also included capital leases related to our DeRidder, Louisiana manufacturing facility for machinery and equipment of $17.8 million, net of accumulated depreciation of $15.5 million which as of December 31, 2017, are legally owned by Ingevity. Amortization expense associated with these capital leases is included within depreciation expense. The payments remaining under these capital leases obligations are included within Note 18.

Depreciation expense was $35.5 million, $33.2 million, and $28.0 million for the years ended December 31, 2017, 2016 and 2015, respectively.