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Basis of Presentation Additional Information (Details) - USD ($) $ in Millions |  | 3 Months Ended
--- | --- | ---
Dec. 14, 2016 | Dec. 31, 2016 | Dec. 26, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Excess tax benefit recognized in income |  | $ 6.0 |
Excess tax benefit from share-based compensation, operating activities |  |  | $ 7.1
Blood Screening Business [Member] |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Gross proceeds on sale | $ 1,850.0 |  |

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- Definition Amount of cash outflow for realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 20 -Section 55 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=65896087&loc=d3e11374-113907 + Details
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