Income Taxes (Tables)

12 Months Ended

Mar. 31, 2011

Income Taxes

Components of Loss Before Income Taxes

	Year Ended March 31,
	2011	2010	2009
Domestic	$         (189)	$         (501)	$         (670)
Foreign	(90)	(205)	(185)
Loss before provision for (benefit from) income taxes	$         (279)	$         (706)	$         (855)

Provision for (Benefit from) Income Taxes

		Current	Deferred	Total
Year Ended March 31, 2011
	Federal	$           (23)	$               2	$           (21)
	State	(6)	3	(3)
	Foreign	23	(2)	21
		$             (6)	$               3	$             (3)
Year Ended March 31, 2010
	Federal	$             (8)	$           (57)	$           (65)
	State	2	(4)	(2)
	Foreign	27	11	38
		$             21	$           (50)	$           (29)
Year Ended March 31, 2009
	Federal	$           (15)	$           161	$           146
	State	(2)	76	74
	Foreign	26	(13)	13
		$               9	$           224	$           233

Schedule of Differences Between Statutory Tax Rate and Effective Tax Rate

	Year Ended March 31,
	2011	2010	2009
Statutory federal benefit rate	(35.0%)	(35.0%)	(35.0%)
State taxes, net of federal benefit	(5.8%)	(3.4%)	(2.1%)
Differences between statutory rate
and foreign effective tax rate	12.3%	4.2%	2.6%
Valuation allowance	23.7%	17.2%	42.8%
Research and development credits	(2.4%)	(1.1%)	(1.6%)
Non-deductible acquisition-related costs and
tax expense from integration restructurings	-	8.2%	-
Non-deductible goodwill impairment	-	-	13.6%
Difference between book and tax gain or loss
on strategic investments	(8.6%)	-	2.6%
Loss on facility impairment	-	-	0.6%
Non-deductible stock-based compensation	12.1%	5.0%	3.7%
Other	2.6%	0.8%	-
Effective tax expense (benefit) rate	(1.1%)	(4.1%)	27.2%

Deferred Tax Assets and Liabilities

			As of March 31,
			2011	2010
Deferred tax assets:
	Accruals, reserves and other expenses		$             178	$             141
	Tax credit carryforwards		181	188
	Stock-based compensation		66	81
	Amortization		12	16
	Net operating loss & capital loss carryforwards		234	233
		Total	671	659
	Valuation allowance		(515)	(466)
		Deferred tax assets, net of valuation allowance	156	193
Deferred tax liabilities:
	Depreciation		(7)	(19)
	State effect on federal taxes		(56)	(50)
	Unrealized gain on marketable equity securities		(3)	(19)
	Prepaids and other liabilities		(27)	(13)
		Total	(93)	(101)
		Deferred tax assets, net of valuation allowance
		and deferred tax liabilities	$               63	$               92

Schedule of Unrecognized Tax Benefits

Balance as of March 31, 2009	$              278
Increases in unrecognized tax benefits related to prior year tax positions	10
Decreases in unrecognized tax benefits related to prior year tax positions	(8)
Increases in unrecognized tax benefits related to current year tax positions	69
Decreases in unrecognized tax benefits related to settlements with taxing authorities	(45)
Reductions in unrecognized tax benefits due to lapse of applicable statute of limitations	(31)
Changes in unrecognized tax benefits due to foreign currency translation	5
Balance as of March 31, 2010	$              278
Increases in unrecognized tax benefits related to prior year tax positions	9
Decreases in unrecognized tax benefits related to prior year tax positions	(41)
Increases in unrecognized tax benefits related to current year tax positions	46
Decreases in unrecognized tax benefits related to settlements with taxing authorities	(14)
Reductions in unrecognized tax benefits due to lapse of applicable statute of limitations	(12)
Changes in unrecognized tax benefits due to foreign currency translation	7
Balance as of March 31, 2011	$              273