Income Taxes - Summary of Tax Years Remain Subject to Examinations under Major Tax Jurisdictions (Detail)	12 Months Ended
	Apr. 24, 2015
Federal Income Tax | Earliest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2008
Federal Income Tax | Latest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2015
United States - State and Local Income Tax | Earliest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2008
United States - State and Local Income Tax | Latest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2015
Australia | Earliest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2011
Australia | Latest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2015
Germany | Earliest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2009
Germany | Latest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2015
India | Earliest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2006
India | Latest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2015
Japan | Earliest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2009
Japan | Latest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2015
The Netherlands | Earliest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2011
The Netherlands | Latest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2015
United Kingdom | Earliest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2013
United Kingdom | Latest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2015
Canada | Earliest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2008
Canada | Latest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2015