Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

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,
($ amounts in millions)	2018			2017
Land and leasehold improvements	$	67.8		$	68.9
Buildings and improvements	101.0			94.6
Machinery, equipment, fixtures and software	207.3			195.6
Construction in process	14.9			18.1
Total property, plant and equipment	391.0			377.2
Accumulated depreciation	(124.1		)	(89.8		)
Property, plant and equipment, net	$	266.9		$	287.4