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Property, Plant and Equipment
9 Months Ended
Jun. 27, 2014
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
9.
Property, Plant and Equipment
The gross carrying amount and accumulated depreciation of property, plant and equipment at the end of each period was as follows:
 
June 27,
2014
 
September 27, 2013
Property, plant and equipment, gross
$
1,945.1

 
$
1,873.7

Less: accumulated depreciation
(945.1
)
 
(876.3
)
Property, plant and equipment, net
$
1,000.0

 
$
997.4



Depreciation expense for property, plant and equipment was $30.4 million and $26.3 million during the three months ended June 27, 2014 and June 28, 2013, respectively, and $82.8 million and $75.5 million during the nine months ended June 27, 2014 and June 28, 2013, respectively. Depreciation expense included depreciation on demonstration equipment of $1.9 million and $1.0 million for the three months ended June 27, 2014 and June 28, 2013, respectively, and $3.9 million and $2.7 million for the nine months ended June 27, 2014 and June 28, 2013, respectively. Demonstration equipment was included within other assets on the unaudited condensed consolidated balance sheets.