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Marketable Securities
 3 Months Ended
Dec. 27, 2014
Investments, Debt and Equity Securities [Abstract]  
Marketable Securities
Marketable Securities
The following reconciles the cost basis to the fair market value of the Company’s equity securities that are classified as available-for-sale: 
Period Ended:
Cost
 
Gross Unrealized
Gains
 
Gross Unrealized
Losses
 
Fair Value
December 27, 2014
$
15.5

 
$
19.7

 
$
(5.7
)
 
$
29.5

September 27, 2014
$
15.5

 
$
10.2

 
$
(1.3
)
 
$
24.4