Financial Instruments and Fair Value Measurements (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2012 InterestRateSwapContract	Jun. 30, 2012 InterestRateSwapContract	Dec. 31, 2011
Derivative [Line Items]
Number of interest rate swap contracts	41	41
Financial Instruments and Fair Value Measurements (Textual) [Abstract]
Maximum length of time hedged in Cash Flow Hedge		10 years
Unsettled derivative contract included in accounts payable and accrued expenses	$ 35.9	$ 35.9	$ 28.5
Recorded for ineffectiveness	2.3	1.4
Interest expense reclassified	2.5	5.1
Estimate of additional Interest expense reclassified		13.0
Accumulated other comprehensive income (loss)	$ 47.1	$ 47.1	$ 51.7
Euro [Member]
Derivative [Line Items]
Number of interest rate swap contracts	33	33
British sterling pound [Member]
Derivative [Line Items]
Number of interest rate swap contracts	2	2
Japanese yen [Member]
Derivative [Line Items]
Number of interest rate swap contracts	5	5
U.S. Dollar
Derivative [Line Items]
Number of interest rate swap contracts	1	1

Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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