Quarterly Financial Data (Schedule of Quarterly Financial Data) (Details) (USD $) In Thousands, except Per Share data	3 Months Ended	12 Months Ended
Mar. 31, 2011	Dec. 31, 2010	Oct. 01, 2010	Jul. 02, 2010	Mar. 31, 2010	Dec. 31, 2009	Oct. 02, 2009	Jul. 03, 2009	Mar. 31, 2011	Mar. 31, 2010	Mar. 31, 2009
Quarterly Financial Data
Net sales	$ 6,858,851	$ 7,832,856	$ 7,422,338	$ 6,565,880	$ 5,940,156	$ 6,556,137	$ 5,831,761	$ 5,782,679	$ 28,679,925	$ 24,110,733	$ 30,948,575
Gross profit	382,885	433,576	397,647	370,818	320,915	373,052	299,580	223,995	1,584,926	1,217,542	1,280,430
Income (loss) before income taxes	153,747	177,853	154,416	129,581	65,643	105,281	(29,653)	(158,046)	615,597	(16,775)	(6,130,309)
Provision for (benefit from) income taxes	18,412	(20,437)	10,000	11,403	5,535	12,411	(49,312)	(4,003)	19,378	(35,369)	5,209
Net income (loss)	$ 135,335	$ 198,290	$ 144,416	$ 118,178	$ 60,108	$ 92,870	$ 19,659	$ (154,043)	$ 596,219	$ 18,594	$ (6,135,518)
Basic	$ 0.18	$ 0.26	$ 0.19	$ 0.15	$ 0.07	$ 0.11	$ 0.02	$ (0.19)	$ 0.77	$ 0.02	$ (7.47)
Diluted	$ 0.17	$ 0.26	$ 0.18	$ 0.14	$ 0.07	$ 0.11	$ 0.02	$ (0.19)	$ 0.75	$ 0.02	$ (7.47)

The amount of net income or loss for the period per each share of common stock outstanding during the reporting period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 21
-Article 9

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 36, 37, 38

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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
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-Paragraph 20
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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The amount of net income or loss for the period per each share of common stock and dilutive common stock equivalents outstanding during the reporting period.

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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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Sum of operating profit and nonoperating income (expense) before income (loss) from equity method investments, income taxes, extraordinary items, cumulative effects of changes in accounting principles, and noncontrolling interest.

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The sum of the current income tax expense (benefit) and the deferred income tax expense (benefit) pertaining to continuing operations.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Research Bulletin (ARB)
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Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.

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