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Reportable Segments and Geographic Information (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Summary of geographic data
Revenue from external customers	$ 838,922	$ 718,704	$ 630,735	$ 615,241	$ 689,063	$ 689,820	$ 644,068	$ 606,928	$ 2,803,602	$ 2,629,879	$ 2,417,183
Property, plant and equipment, net	2,842,031				2,934,664				2,842,031	2,934,664	3,014,598
US
Summary of geographic data
Revenue from external customers									1,820,069	1,453,758	1,090,096
Property, plant and equipment, net	1,882,580				1,993,082				1,882,580	1,993,082	1,985,180
International
Summary of geographic data
Revenue from external customers									983,533	1,176,121	1,327,087
Property, plant and equipment, net	$ 959,451				$ 941,582				$ 959,451	$ 941,582	$ 1,029,418

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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