Long-Term Debt (Components Of Long-Term Debt) (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2016	Sep. 25, 2015	Apr. 30, 2015	Oct. 25, 2012
Debt Instrument [Line Items]
Document Fiscal Year Focus	2016
Capital lease obligation, due over the next 7 years	$ 7,435		$ 8,194
Total long term debt	1,502,751		506,088
Less: Current portion	(826)		(790)
Long-term debt	1,501,925		505,298
Four Point One Two Five Percent Senior Notes, Due October 2020 [Member]
Debt Instrument [Line Items]
Senior Notes	648,129		0
Total long term debt		$ 650,000
Senior Notes, 5.500%, Due November 2022
Debt Instrument [Line Items]
Senior Notes	498,175		497,894
Total long term debt				$ 500,000
Five Point Two Five Percent Senior Notes, Due October 2025 [Member]
Debt Instrument [Line Items]
Senior Notes	$ 349,012		$ 0
Total long term debt		$ 350,000