Property, Plant and Equipment

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, Plant and Equipment

A summary of gross property, plant and equipment at December 31 is presented in the following table:

($ in millions)	Expected useful lives (years)	2020		2019
Land		$	24.8	$	22.1
Buildings and improvements	15-35	618.1		572.9
Machinery and equipment	5-12	911.8		817.0
Molds and dies	4-7	131.2		123.8
Computer hardware and software	3-10	157.5		155.6
Construction in progress		192.1		128.7
		$	2,035.5	$	1,820.1

Depreciation expense for the years ended December 31, 2020, 2019 and 2018 was $104.7 million, $100.0 million and $101.7 million, respectively.

We capitalize interest on borrowings during the active construction period of major capital projects. Capitalized interest is added to the cost of the underlying assets and is amortized over the useful lives of the assets. Capitalized interest for the years ended December 31, 2020, 2019 and 2018 was $1.4 million, $1.0 million and $0.9 million, respectively.

During 2019 and 2018, as part of our 2018 restructuring plan, we recorded within other expense (income) $0.3 million and $2.2 million, respectively, for non-cash asset write-downs associated with the discontinued use of certain equipment. During 2019 and 2018, as part of our restructuring plans, we recorded within other expense (income) $1.9 million and $1.1 million, respectively, for gains on the sale of fixed assets.