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Cash Equivalents and Investments (Tables)
6 Months Ended
Jun. 29, 2018
Investments, Debt and Equity Securities [Abstract]  
Available-for-sale Securities
The following table summarizes the Company’s available-for-sale securities at the end of fiscal 2017.
 
At the end of Fiscal 2017
(In millions)
 
Available-for-sale securities:
 
  U.S. Treasury securities
$
9.6

  Corporate debt securities
96.0

  Commercial paper
100.1

       Total available-for-sale securities
$
205.7

 
 
Reported as:

Cash and cash equivalents
$
26.8

Short-term investments
178.9

    Total
$
205.7