Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of property, plant and equipment useful life

Estimated useful lives by asset class are as follows:

	Average useful life (in years)
Buildings and building improvements	5	to	20
Machinery, equipment and fixtures	3	to	15
Computer hardware and software	3	to	7
Furniture and automobiles	3	to	7
Leasehold improvements	Lesser of useful life or lease term

The major components of property, plant and equipment were as follows:

	December 31,
(dollars in millions)	2020		2019
Land and leasehold improvements	$	53.2	$	68.6
Buildings and improvements	139.5		113.5
Machinery, equipment, fixtures and software	245.8		220.0
Construction in process	22.3		16.0
Total property, plant and equipment	460.8		418.1
Accumulated depreciation	(220.4)		(153.3)
Property, plant and equipment, net	$	240.4	$	264.8