Income Taxes (Tables)

12 Months Ended

Mar. 31, 2012

Income Taxes [Abstract]

Summary of provision for income taxes

(In thousands)	2012			2011		2010
Federal:
Current	$	(17,333	)	$	14,172	$	(8,732	)
Deferred		74,911			95,660		56,085
		57,578			109,832		47,353
State:
Current		(2,999	)		2,365		6,174
Deferred		6,591			13,240		243
		3,592			15,605		6,417
Foreign:
Current		7,978			3,107		8,809
Deferred		(2,176	)		661		1,702
		5,802			3,768		10,511
Total	$	66,972		$	129,205	$	64,281

Domestic and foreign components of income before income taxes

(In thousands)	2012		2011		2010
Domestic	$	74,959	$	161,784	$	59,473
Foreign		522,092		609,296		362,292
Income before income taxes	$	597,051	$	771,080	$	421,765

Federal statutory income tax rate to income before provision for taxes

(In thousands)	2012			2011			2010
Income before provision for taxes	$	597,051		$	771,080		$	421,765
Federal statutory tax rate		35	%		35	%		35	%
Computed expected tax		208,968			269,878			147,618
State taxes, net of federal benefit		2,162			10,317			4,527
Non-deductible stock-based compensation		2,658			2,220			1,813
Tax exempt interest		(263	)		(152	)		(396	)
Foreign earnings at lower tax rates		(117,013	)		(131,261	)		(67,651	)
Tax credits		(29,633	)		(17,431	)		(16,491	)
Deferred compensation		76			(1,297	)		(2,994	)
Other		17			(3,069	)		(2,145	)
Provision for income taxes	$	66,972		$	129,205		$	64,281

Summary of deferred tax assets and liabilities

(In thousands)	2012			2011
Deferred tax assets:
Inventory valuation differences	$	498		$	1,490
Stock-based compensation		29,451			29,755
Deferred income on shipments to distributors		10,493			19,580
Accrued expenses		39,942			42,735
Tax loss carryforwards		3,856			8,508
Tax credit carryforwards		97,104			84,694
Intangible and fixed assets		4,115			7,547
Strategic and equity investments		7,313			9,198
Deferred compensation plan		17,423			16,503
Other		3,634			3,470
		213,829			223,480
Valuation allowance		(28,963	)		(17,841	)
Total deferred tax assets		184,866			205,639
Deferred tax liabilities:
Unremitted foreign earnings		(308,017	)		(264,230	)
State income taxes		(17,343	)		(17,842	)
Convertible debt		(192,397	)		(178,178	)
Other		(8,605	)		(4,257	)
Total deferred tax liabilities		(526,362	)		(464,507	)
Total net deferred tax liabilities	$	(341,496	)	$	(258,868	)

Reconciliation of the beginning and ending amounts of unrecognized tax benefits

(In thousands)	2012			2011
Balance as of beginning of fiscal year	$	79,690		$	96,269
Increases in tax positions for prior years		56			11,964
Decreases in tax positions for prior years		(653	)		(20,030	)
Increases in tax positions for current year		3,768			2,588
Settlements		(39	)		(6,749	)
Lapse in statute of limitations		(17,784	)		(4,352	)
Balance as of end of fiscal year	$	65,038		$	79,690