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Summary of Significant Accounting Policies - Rollforward of Goodwill Activity by Reportable Segments (Detail) $ in Millions | 12 Months Ended
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Sep. 24, 2016 USD ($)
Goodwill [Line Items] |
Goodwill Tax Adjustments | $ 1.3
Goodwill [Roll Forward] |
Balance at September 26, 2015 | 2,808.2
Foreign currency and other | (3.8)
Balance at September 24, 2016 | 2,803.1
Diagnostics [Member] |
Goodwill [Line Items] |
Goodwill Tax Adjustments | 1.3
Goodwill [Roll Forward] |
Balance at September 26, 2015 | 1,152.3
Foreign currency and other | (2.8)
Balance at September 24, 2016 | 1,148.2
Breast Health [Member] |
Goodwill [Line Items] |
Goodwill Tax Adjustments | 0.0
Goodwill [Roll Forward] |
Balance at September 26, 2015 | 631.8
Foreign currency and other | 0.0
Balance at September 24, 2016 | 631.8
GYN Surgical [Member] |
Goodwill [Line Items] |
Goodwill Tax Adjustments | 0.0
Goodwill [Roll Forward] |
Balance at September 26, 2015 | 1,016.0
Foreign currency and other | (1.0)
Balance at September 24, 2016 | 1,015.0
Skeletal Health [Member] |
Goodwill [Line Items] |
Goodwill Tax Adjustments | 0.0
Goodwill [Roll Forward] |
Balance at September 26, 2015 | 8.1
Foreign currency and other | 0.0
Balance at September 24, 2016 | $ 8.1

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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