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Reportable Segments and Geographic Information (Details 2) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2010 | Sep. 30, 2010 | Jun. 30, 2010 | Mar. 31, 2010 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Summary of geographic data |  |  |  |  |  |  |  |  |  |  |
Revenue from external customers | $ 702,941 | $ 704,478 | $ 657,572 | $ 618,479 | $ 615,780 | $ 625,623 | $ 643,822 | $ 576,308 | $ 2,683,470 | $ 2,461,533 | $ 2,715,601
Property, plant and equipment, net | 3,004,452 |  |  |  | 3,092,652 |  |  |  | 3,004,452 | 3,092,652 | 3,404,354
US [Member] |  |  |  |  |  |  |  |  |  |  |
Summary of geographic data |  |  |  |  |  |  |  |  |  |  |
Revenue from external customers |  |  |  |  |  |  |  |  | 1,453,758 | 1,090,096 | 1,332,641
Property, plant and equipment, net | 1,993,082 |  |  |  | 1,985,180 |  |  |  | 1,993,082 | 1,985,180 | 2,278,172
International [Member] |  |  |  |  |  |  |  |  |  |  |
Summary of geographic data |  |  |  |  |  |  |  |  |  |  |
Revenue from external customers |  |  |  |  |  |  |  |  | 1,229,712 | 1,371,437 | 1,382,960
Property, plant and equipment, net | $ 1,011,370 |  |  |  | $ 1,107,472 |  |  |  | $ 1,011,370 | $ 1,107,472 | $ 1,126,182

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- Definition Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 7 -Section 03 -Paragraph 8 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 12 -Paragraph 5 -Subparagraph b, c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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