Represents the number of derivative instruments with contingent features of credit risk.

No definition available.

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- Definition

The amount of cash received during the period on settlement of a hedge.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

The premium (cost) of a hedge, expensed during the period.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Definition

The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Period Type:	instant

- Definition

Aggregate notional amount of foreign currency derivatives to purchase 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 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959

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 1B

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5580258-113959

+ Details

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Balance Type:	debit
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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

+ Details

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Derivative Instruments and Hedging Activities (Details) In Thousands, unless otherwise specified			3 Months Ended
	Mar. 31, 2013 item	Dec. 31, 2012 item	Mar. 31, 2013 Foreign exchange contracts USD ($)	Mar. 31, 2012 Foreign exchange contracts USD ($)	Mar. 31, 2013 U.S. dollars: British pounds sterling USD ($)	Mar. 31, 2013 U.S. dollars: British pounds sterling GBP (£)	Mar. 31, 2013 U.S. dollars: Australian dollars USD ($)	Mar. 31, 2013 U.S. dollars: Australian dollars AUD
Derivative Instruments and Hedging Activities
Percent of debt portfolio with fixed interest rates	75.00%
Number of derivative instrument with contingent features of credit risk	0	0
Derivative instruments
Notional amount of outstanding forward contracts, purchases					$ 195,238		$ 78,694
Notional amount of outstanding forward contracts, sales						125,000		77,000
Net cash receipts from foreign currency forward contracts			5,799
Net cash disbursements from foreign currency forward contracts				$ 1,503