Agreed Rate For Net Cash Settlement Under Treasury Rate-Lock Agreement

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- Definition

Derivative Instrument, Maturity Date

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- Definition

Derivative Instrument, Maturity Date End Range

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- Definition

Derivative Instrument, Maturity Date Start Range

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- Definition

Forward Contract Duration Ceiling

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- Definition

Notional Amount Of Foreign Currency Derivative Instruments Matured

+ Details

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- Definition

Number of Designated Forward Currency Exchange Contracts

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- Definition

Treasury Rate Lock Agreement Cash Settlement

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- Definition

Fixed interest rate related to the interest rate derivative.

+ Details

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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.

+ 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.

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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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- 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 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

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-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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- Definition

Aggregate notional amount of foreign currency exchange rate derivatives. 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

-Glossary Notional Amount

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

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- Definition

Aggregate notional amount of all foreign currency derivatives designated as hedging instruments in fair value hedges. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.

+ References

+ Details

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Aggregate notional amount of all interest rate derivatives designated as hedging instruments in cash flow hedges. Notional amount refers to the monetary amount specified in the interest rate derivative contract.

+ References

+ Details

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- Definition

Aggregate notional amount of all interest rate derivatives not designated as hedging instruments. Notional amount refers to the monetary amount specified in the interest rate derivative contract.

+ References

+ Details

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- Definition

Aggregate notional amount of all derivatives not designated as a hedging instrument. The notional amount relates to a number of currency units, shares, bushels, pounds, or other units specified in a derivative instrument.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

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

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Derivative Instruments And Hedging Strategies (Narrative) (Details) In Millions, unless otherwise specified	9 Months Ended				9 Months Ended			9 Months Ended
	Sep. 30, 2011 USD ($)	Sep. 30, 2011 Minimum [Member] Inland River Services [Member] Cash Flow Hedges [Member]	Sep. 30, 2011 Minimum [Member] Forward Currency Exchange, Option And Future Contracts [Member] months	Sep. 30, 2011 Minimum [Member] Cash Flow Hedges [Member]	Sep. 30, 2011 Maximum [Member] Inland River Services [Member] Cash Flow Hedges [Member]	Sep. 30, 2011 Maximum [Member] Forward Currency Exchange, Option And Future Contracts [Member] months	Sep. 30, 2011 Maximum [Member] Cash Flow Hedges [Member]	Sep. 30, 2011 Offshore Marine Services [Member] Interest Rate Swap Agreements [Member] USD ($)	Sep. 30, 2011 Offshore Marine Services [Member] Interest Rate Swap Agreements [Member] Cash Flow Hedges [Member] USD ($)	Sep. 30, 2011 Interest Rate Swap Agreements [Member] USD ($)	Sep. 30, 2011 Interest Rate Swap Agreements [Member] Cash Flow Hedges [Member] USD ($)	Sep. 30, 2011 Forward Currency Exchange Contracts [Member] Fair Value Hedges [Member] EUR (€)	Dec. 31, 2010 Forward Currency Exchange Contracts [Member] Fair Value Hedges [Member] EUR (€)	Sep. 30, 2011 Forward Currency Exchange, Option And Future Contracts [Member] USD ($)	Sep. 30, 2011 One-Year Rate-Lock Agreement [Member] USD ($)	Sep. 30, 2011 Cash Flow Hedges [Member] USD ($)
Derivative [Line Items]
Notional value of forward currency exchange contracts												€ 51.5
Notional value of forward currency exchange contracts designated												55.1	56.0
Number of forward currency contract												0
Notional value of forward currency exchange contracts matured												59.6
Interest rate swap agreement maturity range, start		2013								2012	2013
Interest rate swap agreement maturity range, end					2015					2015	2014
Fixed interest rate range, start				1.53%						1.67%	2.25%
Fixed interest rate range, end							4.16%			2.59%	2.85%
Notional value of interest rate swap agreement									19.9		125.0					55.0
Interest rate swap agreement maturity date								2014	2015
Fixed interest rate								3.05%	1.48%
Notional value of foreign currency purchase contract														53.0
Forward contract duration ceiling			12			18
Notional value of interest rate swap agreement not designated								26.0		97.2
Notional value of other derivatives not designated															100.0
Agreed rate for net cash settlement under treasury rate-lock agreement	2.845%
Cash settlement of treasury rate lock agreement	$ 7.1