Restructuring and Cost Management Plans Q4 FY17 Restructuring Plan Accrual Reconciliation (Details) - Q4 FY17 Restructuring Plan [Member] - USD ($) $ in Thousands		6 Months Ended		9 Months Ended		12 Months Ended
		Jul. 01, 2017		Dec. 29, 2018		Apr. 01, 2017		Mar. 31, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve				$ 81		$ 4,135		$ 139
Restructuring and Related Cost, Incurred Cost		$ 24,660		0		17,074
Payments for Restructuring				(58)		(8,505)
Restructuring Reserve, Settled without Cash				0		(12,565)
Site Closures [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve				0		888		0
Restructuring and Related Cost, Incurred Cost		1,516		0		627
Payments for Restructuring				0		(1,515)
Restructuring Reserve, Settled without Cash				0		0
Current Asset Impairments and Other Gross Profit [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	[1]			0		0		0
Restructuring and Related Cost, Incurred Cost		14,947	[2]	0	[1]	13,278	[1]
Payments for Restructuring	[1]			0		(2,402)
Restructuring Reserve, Settled without Cash	[1]			0		(10,876)
Non-Current Asset Impairments [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve				0		0		0
Restructuring and Related Cost, Incurred Cost		3,033		0		1,657
Cash Receipts For Restructuring						32
Cash receipt for disposal of restructured assets				0
Restructuring Reserve, Settled without Cash				0		(1,689)
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve				0		0		0
Restructuring and Related Cost, Incurred Cost		239		0		175
Payments for Restructuring				0		(175)
Restructuring Reserve, Settled without Cash				0		0
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve				81		3,247		$ 139
Restructuring and Related Cost, Incurred Cost		$ 4,925		0		1,337
Payments for Restructuring				(58)		(4,445)
Restructuring Reserve, Settled without Cash				$ 0		$ 0

[1] {F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOjk2NDhhYThkMTgyNDQ5MjRiMzY4NzdiODcxOTIyOGFlfFRleHRTZWxlY3Rpb246RDU3M0NGMkQ1RkY5RDFBOUY4OTAzMkNDNzkyNUMxMTYM}

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