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Goodwill and Acquired Intangible Assets (Tables)
 3 Months Ended
Mar. 29, 2026
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 28, 2025
$7,065.8 $986.9 $617.3 $17.6 $8,687.6 
Current year acquisitions— 35.5 — — 35.5 
Foreign currency changes and other(26.6)(7.4)(1.6)— (35.6)
Balance at March 29, 2026
$7,039.2 $1,015.0 $615.7 $17.6 $8,687.5 
Schedule of Carrying Value of Acquired Finite-Lived Intangible Assets
Acquired intangible assets consisted of the following (in millions):
March 29, 2026December 28, 2025
Gross Carrying Amount
Accumulated Amortization
Net Carrying Amount
Gross Carrying Amount
Accumulated Amortization
Net Carrying Amount
Proprietary technology$1,822.5 $1,045.4 $777.1 $1,838.1 $1,014.5 $823.6 
Customer list/relationships/backlog
787.8 336.1 451.7 788.8 326.9 461.9 
Patents0.6 0.6 — 0.6 0.6 — 
Non-compete agreements0.9 0.9 — 0.9 0.9 — 
Definite-lived trademarks
42.9 15.8 27.1 34.8 13.6 21.2 
Total acquired intangible assets subject to amortization
2,654.7 1,398.8 1,255.9 2,663.2 1,356.5 1,306.7 
Acquired intangible assets not subject to amortization:
Indefinite-lived trademarks
791.7 — 791.7 793.4 — 793.4 
Total acquired intangible assets$3,446.4 $1,398.8 $2,047.6 $3,456.6 $1,356.5 $2,100.1 
Schedule of Carrying Value of Acquired Indefinite-Lived Intangible Assets
Acquired intangible assets consisted of the following (in millions):
March 29, 2026December 28, 2025
Gross Carrying Amount
Accumulated Amortization
Net Carrying Amount
Gross Carrying Amount
Accumulated Amortization
Net Carrying Amount
Proprietary technology$1,822.5 $1,045.4 $777.1 $1,838.1 $1,014.5 $823.6 
Customer list/relationships/backlog
787.8 336.1 451.7 788.8 326.9 461.9 
Patents0.6 0.6 — 0.6 0.6 — 
Non-compete agreements0.9 0.9 — 0.9 0.9 — 
Definite-lived trademarks
42.9 15.8 27.1 34.8 13.6 21.2 
Total acquired intangible assets subject to amortization
2,654.7 1,398.8 1,255.9 2,663.2 1,356.5 1,306.7 
Acquired intangible assets not subject to amortization:
Indefinite-lived trademarks
791.7 — 791.7 793.4 — 793.4 
Total acquired intangible assets$3,446.4 $1,398.8 $2,047.6 $3,456.6 $1,356.5 $2,100.1