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Revenue Recognition - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Jul. 28, 2018 | Apr. 29, 2018
Revenue Recognition |  |
Other receivables, included in other current assets | $ 13.8 | $ 12.1
Customer deposits, included in accrued expenses and other current liabilities | 32.5 | 31.3
Deferred revenues, included in accrued expenses and other current liabilities | 13.8 | $ 12.1
Revenue recognized related to contract liabilities | $ 40.1 |
Revenue, practical expedient elected for financing components of contracts with one year or less duration | true |

X
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received, classified as current. + References No definition available. + Details
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Period Type: | instant

X
- Definition Amount of obligation to transfer good or service to customer for which consideration is receivable, classified as current. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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Period Type: | instant

X
- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130549-203045 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84173487&loc=SL51747714-108306 + Details
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Balance Type: | credit
Period Type: | duration

X
- Definition Amount, after allowance, of receivables classified as other, due within one year or the operating cycle, if longer. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
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Balance Type: | na
Period Type: | duration

X
- Definition Indicates (true/false) whether practical expedient is elected not to adjust consideration for effect of financing component when transfer and customer payment of good or service occurs within one year or less. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130569-203045 + Details
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