Segment Information (Revenue From External Customers By Geographical Areas) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Segment Reporting Information [Line Items]
Consolidated	$ 2,788,018	$ 2,622,862	$ 2,326,158
Europe, Africa And Middle East [Member]
Segment Reporting Information [Line Items]
Consolidated	956,977	896,647	807,709
Greater Asia [Member]
Segment Reporting Information [Line Items]
Consolidated	744,810	676,838	574,765
North America [Member]
Segment Reporting Information [Line Items]
Consolidated	678,763	651,057	600,116
Latin America [Member]
Segment Reporting Information [Line Items]
Consolidated	$ 407,468	$ 398,320	$ 343,568