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Liabilities for Dispositions and Discontinued Operations (Notes) | 3 Months Ended
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Mar. 31, 2012
Liabilities of Disposal Group, Including Discontinued Operation [Abstract] |
Liabilities for Dispositions and Discontinued Operations [Text Block] |
10. | LIABILITIES FOR DISPOSITIONS AND DISCONTINUED OPERATIONS
An analysis of the liabilities for dispositions and discontinued operations follows:
| March 31, |  | December 31, |
| 2012 |  | 2011 |
Balance, beginning of period | $ | 90,824 |  |  | $ | 93,160 |  |
Expenditures charged to liabilities | (1,711 | ) |  | (9,209 | ) |
Increase to liabilities | 12 |  |  | 6,873 |  |
Balance, end of period | 89,125 |  |  | 90,824 |  |
Less: Current portion | (9,931 | ) |  | (9,931 | ) |
Non-current portion | $ | 79,194 |  |  | $ | 80,893 |  |
The Company is exposed to the risk of reasonably possible additional losses in excess of the established liabilities. As of March 31, 2012, this amount could range up to $29 million, allocable over several of the applicable sites, and arises from uncertainty over the availability, feasibility or effectiveness of certain remediation technologies, additional or different contamination that may be discovered, development of new or more effective environmental remediation technologies and the exercise of discretion in interpretation of applicable law and regulations by governmental agencies. The Company believes established liabilities are sufficient for costs expected to be incurred over the next 20 years with respect to its dispositions and discontinued operations. Remedial actions for these sites vary, but include on-site (and in certain cases off-site) removal or treatment of contaminated soils and sediments, recovery and treatment/remediation of groundwater, and source remediation and/or control.

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- Definition The entire disclosure for environmental loss contingencies, such as presence of hazardous waste, relevant information from reports issued by regulators, and estimated costs to achieve compliance with regulatory requirements. This element may be used for all of an entity's disclosures about environmental loss contingencies. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13328-110859 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13296-110859 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 96-1 -Paragraph 152, 163, 172 -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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13185-110859 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section Y Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.Y.Q2) -URI http://asc.fasb.org/extlink&oid=6572457&loc=d3e149879-122751 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13237-110859 + Details
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