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Description of Business and Significant Accounting Policies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended | 3 Months Ended
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Apr. 24, 2015 | Apr. 24, 2015 | Apr. 25, 2014
Minimum | Software maintenance and Hardware maintenance services |  |  |
Accounting Policies [Abstract] |  |  |
Maintenance contractual term | 1 year |  |
Minimum | Developed Technology |  |  |
Accounting Policies [Abstract] |  |  |
Finite-Lived Intangible Asset, Useful Life | 3 years |  |
Minimum | Customer Contracts/Relationships |  |  |
Accounting Policies [Abstract] |  |  |
Finite-Lived Intangible Asset, Useful Life | 2 years |  |
Minimum | Covenants not to Compete |  |  |
Accounting Policies [Abstract] |  |  |
Finite-Lived Intangible Asset, Useful Life | 2 years |  |
Minimum | Trademarks and Trade Names |  |  |
Accounting Policies [Abstract] |  |  |
Finite-Lived Intangible Asset, Useful Life | 2 years |  |
Maximum | Software maintenance and Hardware maintenance services |  |  |
Accounting Policies [Abstract] |  |  |
Maintenance contractual term | 5 years |  |
Maximum | Developed Technology |  |  |
Accounting Policies [Abstract] |  |  |
Finite-Lived Intangible Asset, Useful Life | 6 years |  |
Maximum | Customer Contracts/Relationships |  |  |
Accounting Policies [Abstract] |  |  |
Finite-Lived Intangible Asset, Useful Life | 8 years |  |
Maximum | Covenants not to Compete |  |  |
Accounting Policies [Abstract] |  |  |
Finite-Lived Intangible Asset, Useful Life | 3 years |  |
Maximum | Trademarks and Trade Names |  |  |
Accounting Policies [Abstract] |  |  |
Finite-Lived Intangible Asset, Useful Life | 7 years |  |
Amended |  |  |
Accounting Policies [Abstract] |  |  |
Debt issuance costs |  | $ 7.5 us-gaap_DebtIssuanceCosts / us-gaap_AdjustmentsForNewAccountingPronouncementsAxis = us-gaap_NewAccountingPronouncementMember | $ 5.4 us-gaap_DebtIssuanceCosts / us-gaap_AdjustmentsForNewAccountingPronouncementsAxis = us-gaap_NewAccountingPronouncementMember

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- Definition Typical maintenance contract term. + References No definition available. + Details
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- Details
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- Definition Amount of debt issuance costs (for example, but not limited to, legal, accounting, broker, and regulatory fees). + References No definition available. + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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