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Goodwill And Intangible Assets
 3 Months Ended
Dec. 27, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
GOODWILL AND INTANGIBLE ASSETS
7.     GOODWILL AND INTANGIBLE ASSETS

There were no changes to the carrying amount of goodwill during the three months ended December 27, 2024.

The Company tests its goodwill and its indefinite-lived intangible assets for impairment annually as of the first day of its fourth fiscal quarter and in interim periods if certain events occur indicating the carrying value may be impaired. There were no indicators of goodwill and IPR&D impairment noted during the three months ended December 27, 2024. Refer to Note 4 for a discussion of an IPR&D impairment of $16.1 million during the three months ended December 29, 2023.

Intangible assets consist of the following (in millions):
As of
Weighted
Average
Amortization
Period (Years)		December 27, 2024September 27, 2024
 
 
 
Gross
Carrying
Amount
Accumulated
Amortization
Net
Carrying
Amount
Gross
Carrying Amount
Accumulated
Amortization
Net
Carrying
Amount
Developed technology and other6.3$1,363.9 $(565.2)$798.7 $1,379.6 $(540.7)$838.9 
Technology licenses3.2106.2 (56.3)49.9 75.0 (48.8)26.2 
In-process research and development35.4 — 35.4 35.4 — 35.4 
Total intangible assets$1,505.5 $(621.5)$884.0 $1,490.0 $(589.5)$900.5 

Fully amortized intangible assets are eliminated from both the gross and accumulated amortization amounts in the first quarter of each fiscal year. Amortization expense related to definite-lived intangible assets was $48.4 million and $48.1 million for the three months ended December 27, 2024 and December 29, 2023, respectively, primarily recorded within cost of goods sold.
Annual amortization expense for the next five fiscal years related to definite-lived intangible assets, excluding IPR&D, is expected to be as follows (in millions):
Remaining 20252026202720282029Thereafter
Amortization expense$129.8 $149.5 $133.5 $104.4 $87.7 $243.7