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v3.8.0.1

Updates to Significant Accounting Policies - Revenue Recognition And Deferred Revenue Narratives (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 30, 2018 | Dec. 29, 2017
Deferred Revenue Arrangement [Line Items] |  |
Allowance for Doubtful Accounts Receivable, Current | $ 5.0 | $ 3.6
Weighted Average [Member] | Software Service, Support and Maintenance Arrangement [Member] |  |
Deferred Revenue Arrangement [Line Items] |  |
Revenue Contract Term | 1 year |
Maximum |  |
Deferred Revenue Arrangement [Line Items] |  |
Warranty Period On Products Sold | 2 years |
Customer or Product Life | 7 years |
Maximum | Software Service, Support and Maintenance Arrangement [Member] |  |
Deferred Revenue Arrangement [Line Items] |  |
Revenue Contract Term | 3 years |
Maximum | Subscription Arrangement [Member] |  |
Deferred Revenue Arrangement [Line Items] |  |
Revenue Contract Term | 5 years |
Minimum |  |
Deferred Revenue Arrangement [Line Items] |  |
Warranty Period On Products Sold | 1 year |
Customer or Product Life | 3 years |
Minimum | Software Service, Support and Maintenance Arrangement [Member] |  |
Deferred Revenue Arrangement [Line Items] |  |
Revenue Contract Term | 1 year |

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- Definition A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524 + Details
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