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Acquisitions And Other Investments (Wabush Purchase Price Allocation) (Details) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2010
Wabush [Member]
Scenario, Previously Reported [Member]
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Dec. 31, 2010
Wabush [Member]
Scenario, Adjustment [Member]
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Feb. 01, 2010
Wabush [Member]
Scenario, Adjustment [Member]
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Dec. 31, 2010
Wabush [Member]
Scenario, Change [Member]
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|---|---|---|---|---|---|---|
| Business Acquisition [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Cash | Ìý | Ìý | $ 88.0 | $ 88.0 | $ 88.0 | Ìý |
| Working capital adjustments | Ìý | Ìý | 15.0 | 15.0 | 15.0 | Ìý |
| Fair value of total consideration transferred | Ìý | Ìý | 103.0 | 103.0 | 103.0 | Ìý |
| Fair value of Cliffs' ownership interest in subsidiary held prior to acquisition of remaining interest | Ìý | Ìý | 39.7 | 38.0 | Ìý | (1.7) |
| In-process inventories | Ìý | Ìý | 21.8 | 21.8 | Ìý | Ìý |
| Business Acquisiton Purchase Price Allocation Current Assets Supplies and Other Inventory | Ìý | Ìý | 43.6 | 43.6 | Ìý | Ìý |
| Other current assets | Ìý | Ìý | 13.2 | 13.2 | Ìý | Ìý |
| Mineral rights | Ìý | Ìý | 85.1 | 84.4 | Ìý | (0.7) |
| Plant and equipment | Ìý | Ìý | 146.3 | 147.8 | Ìý | 1.5 |
| Intangible assets | Ìý | Ìý | 66.4 | 66.4 | Ìý | Ìý |
| Other assets | Ìý | Ìý | 16.3 | 19.3 | Ìý | 3.0 |
| Total identifiable assets acquired | Ìý | Ìý | 392.7 | 396.5 | Ìý | 3.8 |
| Current liabilities | Ìý | Ìý | (48.1) | (48.1) | Ìý | Ìý |
| Pension and OPEB obligations | Ìý | Ìý | (80.6) | (80.6) | Ìý | Ìý |
| Mine closure obligations | Ìý | Ìý | (39.6) | (53.4) | Ìý | (13.8) |
| Below- market sales contracts | Ìý | Ìý | (67.7) | (67.7) | Ìý | Ìý |
| Deferred taxes | 1,041.8 | Ìý | (20.5) | Ìý | Ìý | 20.5 |
| Other liabilities | Ìý | Ìý | (8.9) | (8.8) | Ìý | 0.1 |
| Total identifiable liabilities assumed | Ìý | Ìý | (265.4) | (258.6) | Ìý | 6.8 |
| Total identifiable net assets acquired | Ìý | Ìý | 127.3 | 137.9 | Ìý | 10.6 |
| Goodwill | Ìý | Ìý | 15.4 | 3.1 | Ìý | (12.3) |
| Total net assets acquired | Ìý | $ 1.7 | $ 142.7 | $ 141.0 | Ìý | $ (1.7) |
| X | ||||||||||
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- Definition
The amount of acquisition cost of a business combination allocated to asset retirement obligations. No definition available.
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- Definition
The amount of acquisition cost of a business combination allocated to supplies and other inventories. No definition available.
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- Definition
Amount of cash paid to acquire the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Fair value of noncash consideration given by the acquirer to acquire the entity. Does not include cash paid, the fair value of debt and securities issued and liabilities incurred to acquire the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized. 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 assets acquired. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The total purchase price of the acquired entity. This includes cash paid to equity interest holders of the acquired entity, fair value of debt and equity securities issued to equity holders of the acquired entity, and transaction costs paid to third parties to consummate the acquisition. 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 inventory, including finished goods, work-in-process, and raw materials. 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 prepaid expenses and other current assets. Does not include amounts allocated to cash and cash equivalents, marketable securities, receivables, inventory, and assets not to be used. 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 current liabilities of the acquired entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred tax assets or liabilities for the differences between the values assigned and the tax bases of assets and liabilities in a business combination, net of any valuation allowance for deferred tax assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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 acquisition cost of a business combination allocated to liabilities assumed. 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
The amount of acquisition cost of a business combination allocated to noncurrent assets of the acquired entity, except for property plant and equipment, intangible assets, and goodwill. 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 other noncurrent liabilities of the acquired entity. 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 a liability for the projected benefit obligation in excess of plan assets or an asset for plan assets in excess of the projected benefit obligation of a single-employer defined benefit pension plan. 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 property, plant and equipment to be used in ongoing operations. 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 unfavorable contracts assumed from the acquired entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This element represents the sum of the: (1) acquisition-date fair value of the total consideration transferred which consists of the sum of the acquisition-date fair values of the assets transferred by the acquirer, the liabilities incurred by the acquirer to former owners of the acquiree, and the equity interests issued by the acquirer and (2) the acquisition-date fair value of any equity interest in the acquiree held by the acquirer prior to the business combination (for example, a step acquisition). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
In a business combination achieved in stages, this element represents the acquisition-date fair value of the equity interest in the acquiree held by the acquirer immediately before the acquisition date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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