Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Apr. 02, 2011
Current assets:
Cash and cash equivalents	$ 788,822	$ 1,222,359
Short-term investments	1,128,805	704,054
Accounts receivable, net of allowances for doubtful accounts and customer returns of $3,446 and $3,579 in 2012 and 2011, respectively	214,965	286,464
Inventories	204,866	264,745
Deferred tax assets	64,822	88,064
Prepaid expenses and other current assets	48,029	57,100
Total current assets	2,450,309	2,622,786
Property, plant and equipment, at cost:
Land	94,260	94,260
Buildings	314,455	301,642
Machinery and equipment	332,232	305,842
Furniture and fixtures	47,475	46,197
Property, plant and equipment, at cost	788,422	747,941
Accumulated depreciation and amortization	(393,440)	(367,371)
Net property, plant and equipment	394,982	380,570
Long-term investments	1,209,228	766,452
Goodwill	149,538	133,580
Acquisition-related intangibles, net	36,332	26,896
Other assets	223,733	210,566
Total Assets	4,464,122	4,140,850
Current liabilities:
Accounts payable	78,613	99,252
Accrued payroll and related liabilities	121,309	125,582
Deferred income on shipments to distributors	67,002	99,763
Other accrued liabilities	75,852	43,543
Total current liabilities	342,776	368,140
Convertible debentures	906,569	890,980
Deferred tax liabilities	463,045	403,990
Long term income taxes payable	14,479	45,306
Other long-term liabilities	29,568	17,817
Commitments and contingencies
Stockholders' equity:
Preferred stock, $.01 par value; 2,000 shares authorized; none issued and outstanding
Common stock, $.01 par value; 2,000,000 shares authorized; 263,612 and 264,602 shares issued and outstanding in 2012 and 2011, respectively	2,636	2,646
Additional paid-in capital	1,195,458	1,163,410
Retained earnings	1,502,327	1,238,044
Accumulated other comprehensive income	7,264	10,517
Total stockholders' equity	2,707,685	2,414,617
Total Liabilities and Stockholders' Equity	$ 4,464,122	$ 4,140,850