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Intangible Assets and Goodwill - Schedule of Intangible Assets (Detail) - USD ($) $ in Millions | Jun. 25, 2022 | Sep. 25, 2021
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | $ 5,598.7 | $ 5,582.1
Accumulated Amortization | 4,162.2 | 3,922.9
Developed technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 4,605.7 | 4,597.7
Accumulated Amortization | 3,389.8 | 3,184.2
In-process research and development |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 64.5 | 71.6
Accumulated Amortization | 0.0 | 0.0
Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 607.9 | 591.7
Accumulated Amortization | 530.9 | 510.1
Trade names |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 267.1 | 268.1
Accumulated Amortization | 200.0 | 191.8
Non-competition agreements |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 1.4 | 1.5
Accumulated Amortization | 1.4 | 1.5
Business licenses |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 2.4 | 2.5
Accumulated Amortization | 2.4 | 2.5
Total acquired intangible assets |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 5,549.0 | 5,533.1
Accumulated Amortization | 4,124.5 | 3,890.1
Internal-use software |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 23.6 | 23.5
Accumulated Amortization | 17.5 | 17.2
Capitalized software embedded in products |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 26.1 | 25.5
Accumulated Amortization | $ 20.2 | $ 15.6

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