Goodwill And Other Intangible Assets (Narrative) (Details) (USD $)	6 Months Ended		12 Months Ended
	Jun. 30, 2011	Jun. 30, 2009	Dec. 31, 2011 years		Dec. 31, 2011		Dec. 31, 2010	Dec. 31, 2009
Goodwill And Other Intangible Assets [Abstract]
Finite-lived intangible assets, useful life, minimum			5		5
Finite-lived intangible assets, useful life, maximum			25		25
Inflationary growth rate	3.00%
Non-cash goodwill impairment charge								$ 252,500,000
Cumulative goodwill impairment charges			252,533,000	[1]	252,533,000	[1]
Non-cash impairment charge primarily associated with a trade name		9,900,000						9,900,000
Increase in goodwill related to acquisitions associated with the valuation of ILMVAC					112,221,000		5,202,000
Test percentage of goodwill impairment			10.00%		10.00%
Amortization of intangible assets					17,100,000		17,300,000
Anticipated amortization of intangible assets in 2012					19,600,000
Anticipated amortization of intangible assets in 2013					19,600,000
Anticipated amortization of intangible assets in 2014					19,600,000
Anticipated amortization of intangible assets in 2015					19,600,000
Anticipated amortization of intangible assets in 2016					19,600,000
Impairment of goodwill and indefinite-lived intangible assets					$ 0		$ 0

[1] Based on exchange rates at the date of the charge.