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Fair Value (Tables)
9 Months Ended
Jun. 28, 2013
Fair Value Disclosures [Abstract]  
Fair Value, Assets Measured on Recurring Basis
At June 28, 2013, assets recorded at fair value on a recurring basis consist 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
$
158.8

 
$
158.8

 
$

 
$

Auction rate securities
2.3

 

 

 
2.3

Total
$
161.1

 
$
158.8

 
$

 
$
2.3

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation
The following table summarizes changes to the fair value of the ARS, which is a Level 3 asset (in millions):
 
 
Auction Rate Securities
Balance at September 28, 2012
 
$
3.1

Sale of auction rate securities
 
(0.8
)
Balance at June 28, 2013
 
$
2.3