Income Taxes (Details Textual) (USD $)	12 Months Ended
	Mar. 31, 2012	Apr. 02, 2011	Apr. 03, 2010
Income Taxes (Textual) [Abstract]
Tax provisions	$ 66,972,000	$ 129,205,000	$ 64,281,000
Net operating loss carryforwards	25,900,000
Gross unrecognized tax benefits balance	65,038,000	79,690,000	96,269,000
Unrecognized tax benefits that would impact effective tax rate	41,700,000	56,000,000
Accrued interest and penalties	839,000	2,200,000
Interest and penalties included in provision for income taxes	644,000	840,000	900,000
Expiry date of carry forwards	2014 through 2030
Unremitted foreign earnings	(308,017,000)	(264,230,000)
Tax credit carrryforwards	138,400,000
Housing tax credit carryforwards	9,300,000
Tax credit carryforwards, unused	32,100,000
Expiry date of tax credit carry forwards	2021 through 2032
Deferred Tax liability	544,300,000
Reduction in tax rate, upper bound	17.00%
Reduction in tax rate, lower bound	0.00%
Benefit from reduction of tax rate on income	43,500,000	54,800,000	18,700,000
Benefit from reduction of tax rate on common share	$ 0.16	$ 0.21	$ 0.07
Deferred tax asset, Valuation allowance	(28,963,000)	(17,841,000)
Long term deferred tax assets	56,700,000	57,300,000
Current deferred tax liability	$ 0	$ 404,000