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Acquisitions And Other Investments (Narrative) (Detail)
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9 Months Ended | 9 Months Ended | ||
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Sep. 30, 2012
USD ($)
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May 12, 2011
Consolidated Thompson [Member]
USD ($)
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May 12, 2011
Consolidated Thompson [Member]
CAD
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Sep. 30, 2012
WISCO [Member]
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| Business Acquisition [Line Items] | Ìý | Ìý | Ìý | Ìý |
| Cost per share acquired (in CAD per share) | Ìý | Ìý | 17.25 | Ìý |
| Consideration transferred, amount | Ìý | $ 4,600,000,000 | Ìý | Ìý |
| Subsidiary or equity method investee percentage ownership acquired | Ìý | Ìý | Ìý | 25.00% |
| Pre-acquisition date Quebec mining duties tax | 16,400,000 | Ìý | Ìý | Ìý |
| Increase in Other Current Liabilities | 6,100,000 | Ìý | Ìý | Ìý |
| Increase in Other Noncurrent Liabilities | 10,300,000 | Ìý | Ìý | Ìý |
| Reduction of calculated minimum distribution payable to the minority partner | 2,600,000 | Ìý | Ìý | Ìý |
| Increase in goodwill | 13,800,000 | Ìý | Ìý | Ìý |
| Mineral rights | 4,825,600,000 | Ìý | Ìý | Ìý |
| Long-term deferred tax liabilities | 1,041,800,000 | Ìý | Ìý | Ìý |
| Noncontrolling interest in subsidiary | 1,075,400,000 | Ìý | Ìý | Ìý |
| Goodwill | 997,300,000 | Ìý | Ìý | Ìý |
| Goodwill tax deductibility | $ 0 | Ìý | Ìý | Ìý |
| X | ||||||||||
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- Definition
Pre-acquisition date Quebec mining duties tax No definition available.
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| X | ||||||||||
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- Definition
Reduction of calculated minimum distribution payable to the minority partner No definition available.
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| X | ||||||||||
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- Definition
Subsidiary or Equity Method Investee Percentage Ownership Acquired No definition available.
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| X | ||||||||||
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- Definition
Fair value, as of the acquisition date, of potential payments under the contingent consideration arrangement including cash and shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount of acquisition cost of a business combination allocated to noncurrent deferred tax assets net of valuation allowance and noncurrent deferred tax liabilities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of acquisition cost of a business combination allocated to mineral rights for acquired entities in the mining industry. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
For an acquired entity, price of a single share of a number of saleable stocks of a company. No definition available.
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- Definition
This element represents the fair value of the noncontrolling interest in the acquiree at the acquisition date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Change in the carrying value of goodwill. The change could be the result of new goodwill acquired, goodwill impairment, if any, goodwill written off related to the sale of a business or other adjustments to goodwill. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The increase (decrease) during the reporting period in other current operating liabilities not separately disclosed in the statement of cash flows. No definition available.
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| X | ||||||||||
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- Definition
The increase (decrease) during the reporting period in other noncurrent operating liabilities not separately disclosed in the statement of cash flows. No definition available.
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