Hedging Activities and Fair Value Measurements (Narrative) (Details) In Millions, unless otherwise specified	6 Months Ended
Jun. 30, 2011 USD ($)	Jun. 30, 2011 EUR (€)
Hedging Activities and Fair Value Measurements
Borrowings resulting in interest rate risk	$ 186.3
Foreign currency contracts maturity period	one	one
Variable rate borrowings	50.0	20.0
Variable interest rate lower range	1.80%	1.80%
Variable interest rate higher range	2.20%	2.20%
Lower expiration dates	2012	2012
Higher expiration dates	2013	2013
Expected reclassification of losses out of AOCI into earnings during the next 12 months	0.8
Variable rate borrowings outstanding	68.1	44.3
Number of foreign currency contracts outstanding	44	44
Notional amounts lower range	0.1
Notional amounts higher range	11.3
Portion of term loan used as a hedge for net investment in subsidiaries		€ 25.5

Borrowings resulting in interest rate risk.

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- Definition

Company designated a Portion of its term loan as hedge for net investment in subsidiaries.

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- Definition

Foreign currency contracts maturity period.

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Hedging activities and fair value measurements.

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- Definition

LIBOR-based variable rate borrowings outstanding.

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- Definition

Notional amounts Of Foreign currency forward contracts higher range.

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- Definition

Notional amounts Of Foreign currency forward contracts lower range.

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- Definition

Variable Rate Borrowings On Which Interest Rate Swap Applied

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- Definition

High end of the range of fixed interest rates when a range is presented for a group of interest rate derivatives.

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- Definition

The high end of the range of time remaining until maturity when a range is presented for a group of derivatives.

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Low end of the range of fixed interest rates when a range is presented for a group of interest rate derivatives.

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The low end of the range of time remaining until maturity when a range is presented for a group of derivatives.

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- Definition

The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 45
-Subparagraph b(2)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6887037&loc=d3e80748-113994

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Number of foreign currency exchange rate derivatives held by the entity at the reporting date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: 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 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

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