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Goodwill and Acquired Intangible Assets (Tables)
 3 Months Ended
Mar. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
The carrying value of goodwill by segment was as follows (in millions):

Digital Imaging InstrumentationAerospace and Defense ElectronicsEngineered SystemsTotal
Balance at December 29, 2024
$6,854.6 $955.3 $163.0 $17.6 $7,990.5 
Current year acquisitions— — 456.6 — 456.6 
Foreign currency changes and other63.6 10.6 12.7 — 86.9 
Balance at March 30, 2025
$6,918.2 $965.9 $632.3 $17.6 $8,534.0 
Schedule of Carrying Value of Acquired Finite-Lived Intangible Assets
Acquired intangible assets consisted of the following (in millions):
March 30, 2025December 29, 2024
Gross Carrying Amount
Accumulated Amortization
Net Carrying Amount
Gross Carrying Amount
Accumulated Amortization
Net Carrying Amount
Proprietary technology$1,830.5 $859.1 $971.4 $1,665.5 $796.6 $868.9 
Customer list/relationships655.6 266.3 389.3 599.3 252.9 346.4 
Patents0.6 0.6 — 0.6 0.6 — 
Non-compete agreements0.9 0.9 — 0.9 0.9 — 
Trademarks48.4 9.4 39.0 12.2 7.7 4.5 
Backlog16.2 16.2 — 16.0 16.0 — 
Total intangibles subject to amortization2,552.2 1,152.5 1,399.7 2,294.5 1,074.7 1,219.8 
Intangibles not subject to amortization:
Trademarks788.1 — 788.1 793.1 — 793.1 
Total acquired intangible assets$3,340.3 $1,152.5 $2,187.8 $3,087.6 $1,074.7 $2,012.9 
Schedule of Carrying Value of Acquired Indefinite-Lived Intangible Assets
Acquired intangible assets consisted of the following (in millions):
March 30, 2025December 29, 2024
Gross Carrying Amount
Accumulated Amortization
Net Carrying Amount
Gross Carrying Amount
Accumulated Amortization
Net Carrying Amount
Proprietary technology$1,830.5 $859.1 $971.4 $1,665.5 $796.6 $868.9 
Customer list/relationships655.6 266.3 389.3 599.3 252.9 346.4 
Patents0.6 0.6 — 0.6 0.6 — 
Non-compete agreements0.9 0.9 — 0.9 0.9 — 
Trademarks48.4 9.4 39.0 12.2 7.7 4.5 
Backlog16.2 16.2 — 16.0 16.0 — 
Total intangibles subject to amortization2,552.2 1,152.5 1,399.7 2,294.5 1,074.7 1,219.8 
Intangibles not subject to amortization:
Trademarks788.1 — 788.1 793.1 — 793.1 
Total acquired intangible assets$3,340.3 $1,152.5 $2,187.8 $3,087.6 $1,074.7 $2,012.9