Segment Information (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Net sales to unaffiliated customers and long-lived assets by geographic region
Total net sales	$ 2,128,713	$ 2,099,277	$ 2,316,203
Total long-lived assets	88,391	93,721
Peripherals
Net sales to unaffiliated customers and long-lived assets by geographic region
Total net sales	2,008,028	1,962,237	2,168,742
Consolidated net sales \| Customer Concentration \| Single customer group \| Peripherals
Concentration risk
Number of major customer	1	1	1
Percentage of benchmark derived from specified source	14.00%	11.00%	14.00%
Accounts receivable \| Credit concentration
Concentration risk
Number of major customer	1	1
Percentage of benchmark derived from specified source	14.00%	14.00%
Accounts receivable \| Credit concentration \| Single customer group \| Peripherals
Concentration risk
Number of major customer	1	1
Percentage of benchmark derived from specified source	14.00%	14.00%
Americas
Net sales to unaffiliated customers and long-lived assets by geographic region
Total net sales	859,893	808,618	879,076
Total long-lived assets	45,166	45,518
EMEA
Net sales to unaffiliated customers and long-lived assets by geographic region
Total net sales	767,017	799,075	897,557
Total long-lived assets	5,154	8,093
Asia Pacific
Net sales to unaffiliated customers and long-lived assets by geographic region
Total net sales	501,803	491,584	539,570
Total long-lived assets	38,071	40,110
United States
Net sales to unaffiliated customers and long-lived assets by geographic region
Total long-lived assets	44,900	45,500
United States \| Consolidated net sales \| Geographic Concentration
Concentration risk
Percentage of benchmark derived from specified source	35.00%	33.00%	34.00%
Switzerland
Net sales to unaffiliated customers and long-lived assets by geographic region
Total long-lived assets	1,600	3,600
Switzerland \| Consolidated net sales \| Geographic Concentration
Concentration risk
Percentage of benchmark derived from specified source	2.00%	2.00%	2.00%
China
Net sales to unaffiliated customers and long-lived assets by geographic region
Total long-lived assets	$ 31,900	$ 32,200

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Represents the number of major customers.

+ References

No definition available.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

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- Definition

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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-Publisher SEC

-Name Regulation S-X (SX)

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