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v3.23.3

Restructuring Charges - Charges Taken Related to Accrued Restructuring Actions (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 24, 2022 | Sep. 25, 2021
Restructuring Reserve [Roll Forward] |  |  |
Fiscal restructuring charges |  |  | $ 8.7
Fiscal 2021 restructuring charges | Restructuring Charges |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Balance |  |  | 4.5
Fiscal restructuring charges |  |  | 9.3
Stock-based compensation |  |  | (0.9)
Severance payments and adjustments |  |  | (8.8)
Fiscal 2021 restructuring charges | Fiscal 2023 Actions | Restructuring Charges |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Balance |  |  | 0.0
Fiscal restructuring charges |  |  | 0.0
Stock-based compensation |  |  | 0.0
Severance payments and adjustments |  |  | 0.0
Fiscal 2021 restructuring charges | Fiscal 2022 Actions | Restructuring Charges |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Balance |  |  | 0.0
Fiscal restructuring charges |  |  | 0.0
Stock-based compensation |  |  | 0.0
Severance payments and adjustments |  |  | 0.0
Fiscal 2021 restructuring charges | Fiscal 2021 Actions | Restructuring Charges |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Balance |  |  | 0.0
Fiscal restructuring charges |  |  | 8.7
Stock-based compensation |  |  | (0.9)
Severance payments and adjustments |  |  | (4.6)
Fiscal 2021 restructuring charges | Previous Other Charges | Restructuring Charges |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Balance |  |  | 4.5
Fiscal restructuring charges |  |  | 0.6
Stock-based compensation |  |  | 0.0
Severance payments and adjustments |  |  | (4.2)
Fiscal 2022 restructuring charges | Restructuring Charges |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Balance | $ 3.1 | $ 4.1 |
Fiscal restructuring charges |  | 2.4 |
Severance payments and adjustments |  | (3.4) |
Balance |  | 3.1 | 4.1
Fiscal 2022 restructuring charges | Fiscal 2023 Actions | Restructuring Charges |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Balance | 0.0 | 0.0 |
Fiscal restructuring charges |  | 0.0 |
Severance payments and adjustments |  | 0.0 |
Balance |  | 0.0 | 0.0
Fiscal 2022 restructuring charges | Fiscal 2022 Actions | Restructuring Charges |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Balance | 2.7 | 0.0 |
Fiscal restructuring charges |  | 3.1 |
Severance payments and adjustments |  | (0.4) |
Balance |  | 2.7 | 0.0
Fiscal 2022 restructuring charges | Fiscal 2021 Actions | Restructuring Charges |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Balance | 0.4 | 3.2 |
Fiscal restructuring charges |  | (0.3) |
Severance payments and adjustments |  | (2.5) |
Balance |  | 0.4 | 3.2
Fiscal 2022 restructuring charges | Previous Other Charges | Restructuring Charges |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Balance | 0.0 | 0.9 |
Fiscal restructuring charges |  | (0.4) |
Severance payments and adjustments |  | (0.5) |
Balance |  | $ 0.0 | $ 0.9
Fiscal 2023 restructuring charges | Restructuring Charges |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Fiscal restructuring charges | 12.0 |  |
Severance payments and adjustments | (6.1) |  |
Balance | 9.0 |  |
Fiscal 2023 restructuring charges | Fiscal 2023 Actions | Restructuring Charges |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Fiscal restructuring charges | 5.5 |  |
Severance payments and adjustments | (3.2) |  |
Balance | 2.3 |  |
Fiscal 2023 restructuring charges | Fiscal 2022 Actions | Restructuring Charges |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Fiscal restructuring charges | 6.5 |  |
Severance payments and adjustments | (2.5) |  |
Balance | 6.7 |  |
Fiscal 2023 restructuring charges | Fiscal 2021 Actions | Restructuring Charges |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Fiscal restructuring charges | 0.0 |  |
Severance payments and adjustments | (0.4) |  |
Balance | 0.0 |  |
Fiscal 2023 restructuring charges | Previous Other Charges | Restructuring Charges |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Fiscal restructuring charges | 0.0 |  |
Severance payments and adjustments | 0.0 |  |
Balance | $ 0.0 |  |

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- Definition Total restructuring charges under exit or disposal plan. + References No definition available. + Details
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- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482017/420-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479823/420-10-S99-2 + Details
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