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Fair Value (Tables)
12 Months Ended
Sep. 27, 2013
Fair Value Disclosures [Abstract]  
Fair Value Of Assets and Liabilities Measured on a Recurring Basis
As of September 27, 2013, assets recorded at fair value on a recurring basis consisted of the following (in millions):             
 
 
 
Fair Value Measurements
 



Total
 
Quoted prices in active markets for identical assets
(Level 1)
 
Significant
other
observable inputs
(Level 2)
 
Significant unobservable inputs
(Level 3)
Assets
 
 
 
 
 
 
 
Money market funds
$
238.8

 
$
238.8

 
$

 
$

Auction rate security
2.3

 

 

 
2.3

Total
$
241.1

 
$
238.8

 
$

 
$
2.3


Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation
The following table summarizes changes to the fair value of the marketable securities which consists of auction rate securities, which are considered a Level 3 asset (in millions):
 
 
Auction rate securities
Balance at September 28, 2012
 
$
3.1

Sale of auction rate security
 
(0.8
)
Balance at September 27, 2013
 
$
2.3