Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Mar. 28, 2015	Mar. 29, 2014	Mar. 30, 2013
Net revenues	$ 2,377,344us-gaap_SalesRevenueNet	$ 2,382,531us-gaap_SalesRevenueNet	$ 2,168,652us-gaap_SalesRevenueNet
Cost of revenues	708,823us-gaap_CostOfGoodsAndServicesSold	743,253us-gaap_CostOfGoodsAndServicesSold	737,206us-gaap_CostOfGoodsAndServicesSold
Gross margin	1,668,521us-gaap_GrossProfit	1,639,278us-gaap_GrossProfit	1,431,446us-gaap_GrossProfit
Operating expenses:
Research and development	525,745us-gaap_ResearchAndDevelopmentExpense	492,447us-gaap_ResearchAndDevelopmentExpense	475,522us-gaap_ResearchAndDevelopmentExpense
Selling, general and administrative	353,670	378,607	365,684
Amortization of acquisition-related intangibles	9,537us-gaap_AmortizationOfIntangibleAssets	9,887us-gaap_AmortizationOfIntangibleAssets	9,508us-gaap_AmortizationOfIntangibleAssets
Restructuring charges	24,491us-gaap_RestructuringCharges	0us-gaap_RestructuringCharges	0us-gaap_RestructuringCharges
Litigation and contingencies	0	9,410	0
Total operating expenses	913,443us-gaap_OperatingExpenses	890,351us-gaap_OperatingExpenses	850,714us-gaap_OperatingExpenses
Operating income	755,078us-gaap_OperatingIncomeLoss	748,927us-gaap_OperatingIncomeLoss	580,732us-gaap_OperatingIncomeLoss
Loss on Extinguishment of Debt	0	9,848	0
Interest and other expense, net	15,002us-gaap_OtherNonoperatingIncomeExpense	29,553us-gaap_OtherNonoperatingIncomeExpense	33,726us-gaap_OtherNonoperatingIncomeExpense
Income before income taxes	740,076	709,526	547,006
Provision for income taxes	91,860us-gaap_IncomeTaxExpenseBenefit	79,138us-gaap_IncomeTaxExpenseBenefit	59,470us-gaap_IncomeTaxExpenseBenefit
Net income	$ 648,216us-gaap_NetIncomeLoss	$ 630,388us-gaap_NetIncomeLoss	$ 487,536us-gaap_NetIncomeLoss
Net income per common share:
Basic (in dollars per share)	$ 2.44us-gaap_EarningsPerShareBasic	$ 2.37us-gaap_EarningsPerShareBasic	$ 1.86us-gaap_EarningsPerShareBasic
Diluted (in dollars per share)	$ 2.35us-gaap_EarningsPerShareDiluted	$ 2.19us-gaap_EarningsPerShareDiluted	$ 1.79us-gaap_EarningsPerShareDiluted
Shares used in per share calculations:
Basic (in shares)	265,480	266,431	261,652
Diluted (in shares)	276,123	287,396	272,573

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