Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 30, 2013	Mar. 31, 2012
Current assets:
Cash and cash equivalents	$ 623,558	$ 788,822
Short-term investments	1,091,187	1,128,805
Accounts receivable, net of allowances for doubtful accounts and customer returns of $3,425 and $3,446 in 2013 and 2012, respectively	229,175	214,965
Inventories	201,250	204,866
Deferred tax assets	60,709	64,822
Prepaid expenses and other current assets	91,760	48,029
Total current assets	2,297,639	2,450,309
Property, plant and equipment, at cost:
Land	93,701	94,260
Buildings	303,958	314,455
Machinery and equipment	340,402	332,232
Furniture and fixtures	46,735	47,475
Gross property, plant and equipment	784,796	788,422
Accumulated depreciation and amortization	(419,109)	(393,440)
Net property, plant and equipment	365,687	394,982
Long-term investments	1,651,033	1,209,228
Goodwill	158,990	149,538
Acquisition-related intangibles, net	36,054	36,332
Other assets	220,048	223,733
Total Assets	4,729,451	4,464,122
Current liabilities:
Accounts payable	72,766	78,613
Accrued payroll and related liabilities	124,195	121,309
Income taxes payable	60,632	0
Deferred income on shipments to distributors	53,358	67,002
Other accrued liabilities	75,837	75,852
Total current liabilities	386,788	342,776
Convertible debentures	922,666	906,569
Deferred tax liabilities	415,442	463,045
Long-term income taxes payable	37,579	14,479
Other long-term liabilities	3,680	29,568
Commitments and contingencies
Stockholders' equity:
Preferred stock, $.01 par value; 2,000 shares authorized; none issued and outstanding	0	0
Common stock, $.01 par value; 2,000,000 shares authorized; 263,649 and 263,612 shares issued and outstanding in 2013 and 2012, respectively	2,636	2,636
Additional paid-in capital	1,276,278	1,195,458
Retained earnings	1,675,722	1,502,327
Accumulated other comprehensive income	8,660	7,264
Total stockholders’ equity	2,963,296	2,707,685
Total Liabilities and Stockholders’ Equity	$ 4,729,451	$ 4,464,122