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Deferred Revenue And Remaining Performance Obligations (Tables)
 6 Months Ended
Jul. 03, 2020
Revenue Recognition and Deferred Revenue [Abstract]  
Deferred Revenue And Performance Obligations
Changes to our deferred revenue during the second quarter and first two quarters of fiscal 2020 and 2019 were as follows: 
  
Second Quarter of
 
First Two Quarters of
(In millions)
2020
 
2019
 
2020
 
2019
Beginning balance of the period
$
551.5

 
$
464.4

 
$
541.9

 
$
387.3

Revenue recognized
(130.1
)
 
(85.4
)
 
(331.9
)
 
(223.8
)
Net deferred revenue activity
109.6

 
73.4

 
321.0

 
288.9

Ending balance of the period
$
531.0

 
$
452.4

 
$
531.0

 
$
452.4