Income Taxes - Summary of Tax Years Remain Subject to Examinations under Major Tax Jurisdictions (Detail)	12 Months Ended
	Apr. 27, 2018
Earliest Tax Year | United States - State and Local Income Tax
Income Tax Examination [Line Items]
Tax year subject to examination	2008
Latest Tax Year | United States - State and Local Income Tax
Income Tax Examination [Line Items]
Tax year subject to examination	2018
Federal Income Tax | Earliest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2012
Federal Income Tax | Latest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2018
Australia | Earliest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2012
Australia | Latest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2018
Germany | Earliest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2013
Germany | Latest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2018
India | Earliest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2007
India | Latest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2018
Japan | Earliest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2012
Japan | Latest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2018
The Netherlands | Earliest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2013
The Netherlands | Latest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2018
United Kingdom | Earliest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2015
United Kingdom | Latest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2018
Canada | Earliest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2010
Canada | Latest Tax Year
Income Tax Examination [Line Items]
Tax year subject to examination	2018