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Goodwill And Intangible Assets
 6 Months Ended
Mar. 29, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets GOODWILL AND INTANGIBLE ASSETS
There were no changes to the carrying amount of goodwill during the three and six months ended March 29, 2024.

The Company tests its goodwill 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 of goodwill may be impaired. There were no indicators of impairment noted during the three and six months ended March 29, 2024.
Intangible assets consist of the following (in millions):
As of
Weighted
Average
Amortization
Period (Years)		March 29, 2024September 29, 2023
 
 
 
Gross
Carrying
Amount
Accumulated
Amortization
Net
Carrying
Amount
Gross
Carrying Amount
Accumulated
Amortization
Net
Carrying
Amount
Developed technology and other6.2$1,346.1 $(460.7)$885.4 $1,290.4 $(379.4)$911.0 
Technology licenses3.270.6 (35.9)34.7 75.8 (36.0)39.8 
In-process research and development199.4 — 199.4 271.3 — 271.3 
Total intangible assets$1,616.1 $(496.6)$1,119.5 $1,637.5 $(415.4)$1,222.1 
Fully amortized intangible assets are eliminated from both the gross and accumulated amortization amounts in the first quarter of each fiscal year. During each of the three and six months ended March 29, 2024, $55.7 million of IPR&D assets were transferred to definite-lived intangible assets, and are being amortized over their useful lives of 8 years. During the three and six months ended March 31, 2023, $1.8 million and $9.5 million of IPR&D assets were transferred to definite-lived intangible assets, and are being amortized over their useful lives of 12 years, respectively. Amortization expense related to definite-lived intangible assets was $45.5 million and $93.6 million for the three and six months ended March 29, 2024, respectively. Amortization expense related to definite-lived intangible assets was $51.4 million and $123.4 million for the three and six months ended March 31, 2023, respectively.

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 2024
2025202620272028Thereafter
Amortization expense$91.3 $164.1 $136.2 $120.9 $97.8 $309.8