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Restructuring and Divestiture Charges - Charges Taken Related to Accrued Restructuring Actions (Detail) - Restructuring - USD ($) $ in Millions | 9 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 27, 2015 | Sep. 27, 2014
Fiscal 2014 charges: |  |
Restructuring Reserve [Roll Forward] |  |
Period beginning balance | $ 16.9 |
Fiscal 2015 restructuring charges |  | $ 46.2
Period end balance |  | 16.9
Fiscal 2014 charges: | Consolidation of Diagnostics Operations |  |
Restructuring Reserve [Roll Forward] |  |
Period beginning balance | 3.0 |
Fiscal 2015 restructuring charges |  | 3.0
Period end balance |  | 3.0
Fiscal 2014 charges: | Fiscal 2015 Actions |  |
Restructuring Reserve [Roll Forward] |  |
Period beginning balance | 0.0 |
Fiscal 2015 restructuring charges |  | 0.0
Period end balance |  | 0.0
Fiscal 2014 charges: | Fiscal 2014 Actions |  |
Restructuring Reserve [Roll Forward] |  |
Period beginning balance | 12.0 |
Fiscal 2015 restructuring charges |  | 29.5
Period end balance |  | 12.0
Fiscal 2014 charges: | Other Operating Cost Reductions |  |
Restructuring Reserve [Roll Forward] |  |
Period beginning balance | 1.9 |
Fiscal 2015 restructuring charges |  | 13.7
Period end balance |  | $ 1.9
Fiscal 2015 charges: |  |
Restructuring Reserve [Roll Forward] |  |
Fiscal 2015 restructuring charges | 12.3 |
Stock-based compensation | (0.7) |
Fiscal 2015 charges: | Consolidation of Diagnostics Operations |  |
Restructuring Reserve [Roll Forward] |  |
Fiscal 2015 restructuring charges | 0.6 |
Fiscal 2015 charges: | Fiscal 2015 Actions |  |
Restructuring Reserve [Roll Forward] |  |
Fiscal 2015 restructuring charges | 3.7 |
Fiscal 2015 charges: | Fiscal 2014 Actions |  |
Restructuring Reserve [Roll Forward] |  |
Fiscal 2015 restructuring charges | 7.7 |
Fiscal 2015 charges: | Other Operating Cost Reductions |  |
Restructuring Reserve [Roll Forward] |  |
Fiscal 2015 restructuring charges | 0.3 |
Two Thousand Fifteen |  |
Restructuring Reserve [Roll Forward] |  |
Stock-based compensation | (0.7) |
Severance payments | (21.6) |
Other payments | (1.8) |
Period end balance | 5.1 |
Two Thousand Fifteen | Consolidation of Diagnostics Operations |  |
Restructuring Reserve [Roll Forward] |  |
Stock-based compensation | 0.0 |
Severance payments | (3.0) |
Other payments | (0.5) |
Period end balance | 0.1 |
Two Thousand Fifteen | Fiscal 2015 Actions |  |
Restructuring Reserve [Roll Forward] |  |
Stock-based compensation | (0.7) |
Severance payments | (1.7) |
Other payments | 0.0 |
Period end balance | 1.3 |
Two Thousand Fifteen | Fiscal 2014 Actions |  |
Restructuring Reserve [Roll Forward] |  |
Stock-based compensation | 0.0 |
Severance payments | (15.0) |
Other payments | (1.0) |
Period end balance | 3.7 |
Two Thousand Fifteen | Other Operating Cost Reductions |  |
Restructuring Reserve [Roll Forward] |  |
Stock-based compensation | 0.0 |
Severance payments | (1.9) |
Other payments | (0.3) |
Period end balance | $ 0.0 |

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- Definition Payments to settle other restructuring charges. + References No definition available. + Details
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- Definition Total restructuring charges under exit or disposal plan. + References No definition available. + Details
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- Definition Share based compensation expense included other restructuring costs. + 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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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