Property, Plant and Equipment

12 Months Ended

Jun. 30, 2015

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, Plant and Equipment

Property, plant and equipment consisted of the following components at June 30, 2015 and 2014:

	June 30,
($ in millions)	2015		2014
Land	$	28.8	$	27.1
Buildings and building equipment	442.9		451.3
Machinery and equipment	2,035.1		1,956.1
Construction in progress	90.0		79.1
Total at cost	2,596.8		2,513.6
Less: accumulated depreciation and amortization	1,199.8		1,106.6
Total property, plant, and equipment	$	1,397.0	$	1,407.0

The estimated useful lives of depreciable assets are as follows:

Asset Category	Useful Life (in Years)
Buildings and building equipment	10 – 45
Machinery and equipment	3 – 30

Depreciation for the years ended June 30, 2015, 2014 and 2013 was $107.2 million, $93.3 million and $85.1 million, respectively.