BUSINESS AND ASSETS ACQUISITIONS (Details) $ in Thousands			3 Months Ended	6 Months Ended
	Sep. 28, 2015 USD ($)	Jun. 29, 2015 USD ($)	Sep. 25, 2015 USD ($)	Sep. 25, 2015 USD ($) acquisition	Sep. 26, 2014 USD ($)	Jun. 26, 2015 USD ($)	Mar. 31, 2015 USD ($)	Jun. 27, 2014 USD ($)	Mar. 31, 2014 USD ($)
Business Acquisitions
Acquisition of businesses, net of cash acquired				$ 641,913	$ 38,082
Current assets:
Goodwill			$ 627,359	627,359			$ 333,631
Current liabilities:
Acquisition related costs			8,100	8,100
Gross Carrying Amount			469,946	469,946			173,838
Goodwill and intangibles			981,838	981,838			415,175
Potential contingent consideration			$ 4,500	4,500	$ 15,800	$ 4,500	4,500	$ 11,300	$ 11,300
Maximum time to complete final allocation of purchase price			12 months
Alcatel-Lucent
Business Acquisitions
Acquisition of businesses, net of cash acquired			$ 67,500
Current assets:
Inventories			55,000	55,000
Property and equipment, net			10,000	10,000
Intangibles			2,100	2,100
Goodwill			3,600	3,600
Current liabilities:
Net liabilities assumed in acquisition			3,200	3,200
Series of Individually Immaterial Business Acquisitions
Business Acquisitions
Purchase consideration net cash				$ 15,300
Number of acquisitions completed | acquisition				3
Cash acquired from acquisitions				$ 100
Current assets:
Property and equipment, net			2,000	2,000
Current liabilities:
Assumed liabilities			600	600
Goodwill and intangibles			18,900	18,900
Mirror Controls International
Business Acquisitions
Acquisition of businesses, net of cash acquired		$ 555,200
Cash acquired		$ 27,700
Current assets:
Accounts receivable			41,392	41,392
Inventories			19,169	19,169
Other current assets			2,790	2,790
Total current assets			63,351	63,351
Property and equipment, net			39,256	39,256
Other assets			942	942
Intangibles			280,000	280,000
Goodwill			290,478	290,478
Total assets			674,027	674,027
Current liabilities:
Accounts payable			28,002	28,002
Accrued liabilities & other current liabilities			20,677	20,677
Total current liabilities			48,679	48,679
Other liabilities			70,190	70,190
Total aggregate purchase price			555,158	555,158
Acquisition related costs			6,700
Subsequent Event | Nextracker
Business Acquisitions
Acquisition of businesses, net of cash acquired	$ 245,000
Current liabilities:
Potential contingent consideration	$ 97,200
Customer-related intangibles
Current liabilities:
Gross Carrying Amount			279,204	$ 279,204			133,853
Customer-related intangibles | Alcatel-Lucent
Current liabilities:
Weighted average useful life				5 years
Customer-related intangibles | Mirror Controls International
Current liabilities:
Gross Carrying Amount			131,400	$ 131,400
Weighted average useful life				8 years
Licenses and other intangibles
Current liabilities:
Gross Carrying Amount			190,742	$ 190,742			$ 39,985
Licenses and other intangibles | Mirror Controls International
Current liabilities:
Gross Carrying Amount			$ 148,600	$ 148,600
Weighted average useful life				10 years