Segment Information (Income Loss Before Provision for Income Tax of Reportable Segments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Income Loss From Continuing Operations Before Provision For Income Tax Segment	$ 231,815	$ 201,695	$ 731,790	$ 405,764
US Traditional Segment Reporting Information [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Income Loss From Continuing Operations Before Provision For Income Tax Segment	77,833	85,038	222,793	254,794
US Non-Traditional Segment Reporting Information [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Income Loss From Continuing Operations Before Provision For Income Tax Segment	77,500	21,051	256,098	199,611
Canada Segment Reporting Information [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Income Loss From Continuing Operations Before Provision For Income Tax Segment	25,044	41,869	80,128	113,836
EMEA [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Income Loss From Continuing Operations Before Provision For Income Tax Segment	45,176	39,664	121,703	62,576
Asia Pacific [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Income Loss From Continuing Operations Before Provision For Income Tax Segment	20,413	18,779	81,652	(250,324)
Corporate and Other [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Income Loss From Continuing Operations Before Provision For Income Tax Segment	$ (14,151)	$ (4,706)	$ (30,584)	$ 25,271