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COMMITMENTS AND CONTINGENCIES (Details) (USD $)
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12 Months Ended | ||
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2012
Bloom Lake [Member]
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| Related Party Transaction [Line Items] | 听 | 听 | 听 |
| Commitments, Fair Value Disclosure | $ 14,600,000,000 | $ 11,000,000,000 | 听 |
| Future commitments, year one | 1,600,000,000 | 听 | 听 |
| Future commitments, year two | 700,000,000 | 听 | 听 |
| Future commitments, year three | 900,000,000 | 听 | 听 |
| Future commitments, year four | 800,000,000 | 听 | 听 |
| Future commitments, year five | 800,000,000 | 听 | 听 |
| Future commitments, thereafter | 9,700,000,000 | 听 | 听 |
| Capital investment required | 听 | 听 | 1,300,000,000 |
| Capital investment committed | 听 | 听 | 1,100,000,000 |
| Capital expenditures related to commitment | 听 | 听 | 734,000,000 |
| Capital investment, future payments | 听 | 听 | 393,000,000 |
| Environmental liabilities | $ 15,700,000 | $ 15,500,000 | 听 |
| X | ||||||||||
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- Definition
Capital investment, future payments No definition available.
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| X | ||||||||||
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- Definition
Capital investment required No definition available.
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| X | ||||||||||
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- Definition
Commitments After Year Five No definition available.
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| X | ||||||||||
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- Definition
Commitments Year Five No definition available.
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| X | ||||||||||
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- Definition
Commitments Year Four No definition available.
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| X | ||||||||||
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- Definition
Commitments Year One No definition available.
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| X | ||||||||||
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- Definition
Commitments Year Three No definition available.
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| X | ||||||||||
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- Definition
Commitments Year Two No definition available.
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| X | ||||||||||
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- Definition
Total costs accrued as of the balance sheet date for environmental loss contingencies. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents commitments outstanding as of the balance sheet date which obligate or represent potential claims against the assets of the Company relating to, for example, the extension of credit. Further, commitments generally represent off balance sheet arrangements that obligate the entity to deliver assets or services or enter into another obligation in the future. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The minimum amount the entity agreed to spend under the long-term purchase commitment. No definition available.
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| X | ||||||||||
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- Definition
The cash outflow for acquisition of or capital improvements of property, plant and equipment, used to produce goods or deliver services, and not otherwise defined in the taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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