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Goodwill and Acquired Intangible Assets - Schedule of Changes in the Carrying Value of Goodwill (Details)
$ in Millions
 3 Months Ended
Mar. 30, 2025
USD ($)
Goodwill [Roll Forward]  
Goodwill, beginning balance $ 7,990.5
Current year acquisitions 456.6
Foreign currency changes and other 86.9
Goodwill, ending balance 8,534.0
Digital Imaging  
Goodwill [Roll Forward]  
Goodwill, beginning balance 6,854.6
Current year acquisitions 0.0
Foreign currency changes and other 63.6
Goodwill, ending balance 6,918.2
Instrumentation  
Goodwill [Roll Forward]  
Goodwill, beginning balance 955.3
Current year acquisitions 0.0
Foreign currency changes and other 10.6
Goodwill, ending balance 965.9
Aerospace and Defense Electronics  
Goodwill [Roll Forward]  
Goodwill, beginning balance 163.0
Current year acquisitions 456.6
Foreign currency changes and other 12.7
Goodwill, ending balance 632.3
Engineered Systems  
Goodwill [Roll Forward]  
Goodwill, beginning balance 17.6
Current year acquisitions 0.0
Foreign currency changes and other 0.0
Goodwill, ending balance $ 17.6