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DERIVATIVE INSTRUMENTS (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2011
Convertible Senior Notes Due 2027 2.875 percent [Member]
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Dec. 31, 2010
Convertible Senior Notes Due 2027 2.875 percent [Member]
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Dec. 31, 2009
Convertible Senior Notes Due 2027 2.875 percent [Member]
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Dec. 31, 2011
Foreign Exchange Contract [Member]
Not Designated as Hedging Instrument [Member]
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Dec. 31, 2010
Foreign Exchange Contract [Member]
Not Designated as Hedging Instrument [Member]
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Dec. 31, 2010
Interest Rate Swap [Member]
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Dec. 31, 2010
Interest Rate Swap [Member]
Designated as Hedging Instrument [Member]
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Dec. 31, 2011
Interest Rate Swaps and Cap Agreements [Member]
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Dec. 31, 2010
Interest Rate Swaps and Cap Agreements [Member]
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| Derivative [Line Items] | |||||||||
| Notional amounts | $ 32.5 | $ 85.7 | $ 131.0 | $ 141.4 | |||||
| Interest rate swap settlement expense | $ 4.5 | ||||||||
| Number of instruments settled | 3 | ||||||||
| Number of settled instruments designated as cash flow hedges | 1 | ||||||||
| Debt Instrument [Line Items] | |||||||||
| Debt instrument stated interest rate (in hundredths) | 2.875% | 2.875% | 2.875% | ||||||
| X | ||||||||||
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- Definition
Monetary amount specified by the derivative(s). Expressed as an absolute value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Number of interest rate derivative instruments settled by the entity during the reporting period. No definition available.
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| X | ||||||||||
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- Definition
Number of interest rate derivative instruments settled that were designated as cash flow hedges by the entity. No definition available.
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| X | ||||||||||
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- Definition
Interest rate stated in the contractual debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The amount of loss recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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