Business Segments (Geographic Information on Revenues from External Customers) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
External Revenues	$ 5,476,084	$ 5,390,089	$ 4,619,602
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
External Revenues	2,201,500	1,798,500	1,038,100
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
External Revenues	1,052,400	1,150,200	1,088,400
Malaysia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
External Revenues	2,233,000	2,337,500	2,415,600
Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
External Revenues	$ (10,800)	$ 103,900	$ 77,500