Restructuring and Cost Management Plans Q4 FY17 Restructuring Plan Expected Costs (Details) - Q4 FY17 Restructuring Plan [Member] - USD ($) $ in Thousands		6 Months Ended				12 Months Ended
		Sep. 29, 2018		Jul. 01, 2017		Apr. 01, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost		$ 24,660
Restructuring and Related Cost, Incurred Cost		0		$ 24,660		$ 17,074
Restructuring and Related Cost, Expected Cost Remaining		0
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost		4,925
Restructuring and Related Cost, Incurred Cost		0		4,925		1,337
Restructuring and Related Cost, Expected Cost Remaining		0
Site Closures [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost		1,516
Restructuring and Related Cost, Incurred Cost		0		1,516		627
Restructuring and Related Cost, Expected Cost Remaining		0
Current Asset Impairments and Other Gross Profit [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	[1]	14,947
Restructuring and Related Cost, Incurred Cost		0	[2]	14,947	[1]	13,278	[2]
Restructuring and Related Cost, Expected Cost Remaining	[1]	0
Non-Current Asset Impairments [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost		3,033
Restructuring and Related Cost, Incurred Cost		0		3,033		1,657
Restructuring and Related Cost, Expected Cost Remaining		0
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost		239
Restructuring and Related Cost, Incurred Cost		0		$ 239		$ 175
Restructuring and Related Cost, Expected Cost Remaining		$ 0

[1] (1) Current asset impairments include inventory charges recorded in cost of sales.

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