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Restructuring Restructuring Related Balance Sheet Activity (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve - Beginning Balance	$ 36,341us-gaap_RestructuringReserve
Costs incurred and charged to expense	50,857us-gaap_RestructuringCharges	35,497us-gaap_RestructuringCharges	1,665us-gaap_RestructuringCharges
Cash payments	(16,313)us-gaap_PaymentsForRestructuring
Non-cash items	5,220
Effect of change in exchange rates	(2,806)
Restructuring Reserve - Ending Balance	62,859us-gaap_RestructuringReserve	36,341us-gaap_RestructuringReserve
Employee severance costs
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve - Beginning Balance	32,709
Costs incurred and charged to expense	41,952
Cash payments	(12,732)
Non-cash items	0
Effect of change in exchange rates	(2,596)
Restructuring Reserve - Ending Balance	59,333
Asset Impairment and Net (Gain) Loss on Sale or Disposal [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve - Beginning Balance	0
Costs incurred and charged to expense	5,220
Cash payments	0
Non-cash items	5,220
Effect of change in exchange rates	0
Restructuring Reserve - Ending Balance	0
Other restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve - Beginning Balance	3,632
Costs incurred and charged to expense	3,685
Cash payments	(3,581)
Non-cash items	0
Effect of change in exchange rates	(210)
Restructuring Reserve - Ending Balance	$ 3,526