Supplemental Balance Sheet, Income Statement and Cash Flow Information (Details 4) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Supplemental Balance Sheet, Income Statement and Cash Flow Information
Losses (gains) on sales, retirements and involuntary conversions of long-lived assets	$ 2,621	$ (13,746)	$ 6,801	$ (13,612)
Litigation expenses	3,255	2,295	8,791	12,221
Foreign currency transaction losses (gains)	2,766	79	5,021	525
Losses (gains) on derivative instruments	(268)	(679)	(1,281)	(1,540)
Losses (gains) on debt extinguishment				58
Other losses (gains)	1,889	444	2,505	1,248
Losses (gains) on sales and retirements of long-lived assets and other expense (income), net	$ 10,263	$ (11,607)	$ 21,837	$ (1,100)