Derivative Financial Instruments (Details Textual) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012 Contract
Derivative Financial Instruments (Textual) [Abstract]
Maturity period of forward contracts	Less than one Year
Number of interest rate swap agreements	6
Euro Forward Contracts [Member]
Derivative [Line Items]
Notional dollar amount of forward contracts	29
Average exchange rate on forward contracts	1.4
Six Interest Rate Swap Agreements [Member]
Derivative [Line Items]
Notional amount of interest rate swaps	400

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Average amount of time remaining before foreign currency exchange rate derivatives mature or expire.

+ References

No definition available.

+ Details

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- Definition

The average contractual rate at which a foreign currency can be purchased or sold under the terms of a group of foreign currency derivative contracts.

+ References

No definition available.

+ Details

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- Details

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- Definition

Aggregate notional amount of foreign currency derivatives to sell a foreign currency. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

-URI http://asc.fasb.org/extlink&oid=6519104

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5579245-113959

+ Details

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- Definition

Aggregate notional amount of interest rate derivatives, which relates to the currency amount specified in the interest rate derivative instruments.

+ References

+ Details

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- Definition

Number of interest rate derivative instruments held by the entity at the reporting date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5579245-113959

+ Details

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