Supplemental Balance Sheet, Income Statement and Cash Flow Information (Details 3) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Losses (gains) on sales and disposals of long-lived assets and other expense (income)
Losses (gains) on sales, disposals and involuntary conversions of long-lived assets	$ (8,830,000)	$ 13,624,000	$ (147,522,000)
Litigation expenses	8,880,000	11,684,000	5,382,000
Foreign currency transaction losses (gains)	1,019,000	6,219,000	4,787,000
Losses (gains) on derivative instruments	5,576,000	3,785,000
Other losses (gains)	2,428,000	2,665,000	717,000
Losses (gains) on sales and retirements of long-lived assets and other expense (income), net	9,073,000	37,977,000	(136,636,000)
Gain on sale of equity interest			160,000,000
Parent Company
Losses (gains) on sales and disposals of long-lived assets and other expense (income)
Losses (gains) on sales and retirements of long-lived assets and other expense (income), net	$ 7,668,000	$ 7,353,000	$ 1,231,000