Maximum number of shares for automatic annual increase in number of common stock shares available under the terms of employee stock purchase plan.

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- Definition

Number of additional common shares reserved for future issuance under employee stock purchase plan.

+ Details

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- Definition

Overlapping first period (in number of months) on purchase of common stock under employee stock purchase plan.

+ Details

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- Definition

Overlapping fourth period (in number of months) on purchase of common stock under employee stock purchase plan.

+ Details

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- Definition

Overlapping second period (in number of months) on purchase of common stock under employee stock purchase plan.

+ Details

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- Definition

Overlapping third period (in number of months) on purchase of common stock under employee stock purchase plan.

+ Details

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- Definition

Percentage of company's additional discretionary match under contributory profit-sharing plan for its domestic employee.

+ Details

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- Definition

Percentage of company's match on first 4 percent of participant's eligible compensation under contributory profit-sharing plan for its domestic employees.

+ Details

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- Definition

Percentage of eligible compensation matched by the company under contributory profit-sharing plan for its domestic employees.

+ Details

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- Definition

Percentage of employee's base salary allowed as employee contribution under contributory profit-sharing plan for its domestic employees, subject to maximum annual limitations prescribed by Internal Revenue Service.

+ Details

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- Definition

Previous percentage of fair market value of common stock, at beginning of semi-annual purchase plan period, equivalent to the stock purchase price under the plan.

+ Details

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- Definition

Current percentage of fair market value of common stock, at beginning of semi-annual purchase plan period, equivalent to the stock purchase price under the plan.

+ Details

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- Definition

Percentage of fair market value of common stock used to determine purchase price under the plan. The common stock is valued either on the first day of the participant's entry date into the offering period or the semi-annual purchase date, whichever is lower.

+ Details

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- Definition

Percentage of outstanding shares of common stock used to determine automatic annual increase in common stock available under the plan (in hundredths)

+ Details

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- Definition

Aggregate number of common shares reserved for future issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 4

+ Details

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- Definition

The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph 64, 65

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 6, 7

+ Details

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- Definition

The amount of payment into the fund established for purposes of making future disbursements to the individual in accordance with the terms and understanding of the deferred compensation arrangement.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ Details

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- Definition

Number of shares issued during the period as a result of an employee stock purchase plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30
-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 10

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 5

+ Details

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Employee Benefit Plans (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Mar. 31, 2011	Mar. 31, 2010	Mar. 31, 2009
Defined contribution pension [Member]
Deferred compensation arrangement, by type of deferred compensation [Line Items]
Percentage of employee's base salary allowed as employee contribution (in hundredths)	60.00%
Percentage of company's match (in hundredths)	25.00%
Percentage of eligible compensation matched by the company (in hundredths)	4.00%
Percentage of company's additional discretionary match (in hundredths)	25.00%
Amount of company contributions			1.4
Employee stock purchase plan, 2001 plan [Member]
Deferred compensation arrangement, by type of deferred compensation [Line Items]
Percentage of fair market value of common stock for employee purchase (in hundredths)	85.00%
Overlapping first period on purchase of common stock under purchase plan (in number of months)	24
Overlapping second period on purchase of common stock under purchase plan (in number of months)	18
Overlapping third period on purchase of common stock under purchase plan (in number of months)	12
Overlapping fourth period on purchase of common stock under purchase plan (in number of months)	6
Maximum automatic increase in number of common stock shares under purchase plan (in shares)	1,500,000
Percentage of outstanding shares of common stock used to determine automatic annual increase in common stock (in hundredths)	50.00%
Number of additional shares reserved under purchase plan (in shares)	941,530	921,171	910,229
Number of shares of common stock reserved for issuance (in shares)	10,317,592
Shares issued under purchase plan (in shares)	4,106,979
Employee stock purchase plan, employees in non-US locations [Member]
Deferred compensation arrangement, by type of deferred compensation [Line Items]
Number of shares of common stock reserved for issuance (in shares)	1,308,231
Shares issued under purchase plan (in shares)	534,644
Percentage of fair market value of common stock at the beginning or end of semi-annual purchase plan period, during fiscal 1995 (in hundredths)	10.00%
Percentage of fair market value of common stock at the beginning or end of semi-annual purchase plan period, effective 2006 (in hundredths)	85.00%
Management incentive compensation plan [Member]
Deferred compensation arrangement, by type of deferred compensation [Line Items]
Compensation expense charged against operations	28.3	16.5	3.0
Cash bonus plan [Member]
Deferred compensation arrangement, by type of deferred compensation [Line Items]
Compensation expense charged against operations	16.0	4.3	2.9