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Intangible Assets Additional Information (Details) - USD ($) $ in Millions | Dec. 31, 2016 | Sep. 24, 2016
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Product Line [Line Items] |  |
Accumulated Amortization | $ 2,475.9 | $ 2,681.5
Developed technology |  |
Product Line [Line Items] |  |
Assets held for sale | 154.0 |
Accumulated Amortization | 1,962.9 | 1,991.6
Customer relationships and contracts |  |
Product Line [Line Items] |  |
Assets held for sale | 387.7 |
Accumulated Amortization | $ 366.9 | $ 546.2

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- Definition Fair value portion of assets classified as held for sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 + Details
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