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Property, Plant and Equipment
6 Months Ended
Mar. 25, 2016
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:
 
March 25,
2016
 
September 25, 2015
Property, plant and equipment, gross
$
1,938.3

 
$
1,870.6

Less: accumulated depreciation
(938.9
)
 
(879.3
)
Property, plant and equipment, net
$
999.4

 
$
991.3



Depreciation expense for property, plant and equipment was $36.8 million and $24.2 million during the three months ended March 25, 2016 and March 27, 2015, respectively. Depreciation expense for property, plant and equipment was $67.2 million and $46.2 million during the six months ended March 25, 2016 and March 27, 2015, respectively.