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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule Of Derivative Instruments In Statement Of Financial Position, Fair Value) (Details) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
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Dec. 31, 2011
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|---|---|---|
| Derivatives, Fair Value [Line Items] | ||
| Derivative asset, fair value | $ 78.6 | $ 165.9 |
| Derivative liability, fair value | 13.2 | 23.0 |
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Designated as Hedging Instrument [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Derivative asset, fair value | 16.2 | 5.2 |
| Derivative liability, fair value | 1.9 | 3.5 |
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Not Designated as Hedging Instrument [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Derivative asset, fair value | 62.4 | 160.7 |
| Derivative liability, fair value | 11.3 | 19.5 |
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Not Designated as Hedging Instrument [Member] | Provisional Pricing Arrangements [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Derivative liability, fair value | ||
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Significant Other Observable Inputs (Level 2) [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Derivative Assets (Current) [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Derivative asset, fair value | 16.2 | 5.2 |
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Significant Other Observable Inputs (Level 2) [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Other Current Liabilities [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Derivative liability, fair value | 1.9 | 3.5 |
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Significant Other Observable Inputs (Level 2) [Member] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Derivative Assets (Current) [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Derivative asset, fair value | 2.8 | |
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Significant Other Observable Inputs (Level 2) [Member] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Other Current Liabilities [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Derivative liability, fair value | ||
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Market Approach [Member] | Managements Estimate Of 62% Fee [Member] | Significant Unobservable Inputs (Level 3) [Member] | Not Designated as Hedging Instrument [Member] | Provisional Pricing Arrangements [Member] | Derivative Assets (Current) [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Derivative asset, fair value | 3.5 | 1.2 |
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Market Approach [Member] | Managements Estimate Of 62% Fee [Member] | Significant Unobservable Inputs (Level 3) [Member] | Not Designated as Hedging Instrument [Member] | Provisional Pricing Arrangements [Member] | Accounts Receivable [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Derivative asset, fair value | 83.8 | |
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Market Approach [Member] | Managements Estimate Of 62% Fee [Member] | Significant Unobservable Inputs (Level 3) [Member] | Not Designated as Hedging Instrument [Member] | Provisional Pricing Arrangements [Member] | Other Current Liabilities [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Derivative liability, fair value | 11.3 | 19.5 |
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Market Approach [Member] | Hot-Rolled Steel Estimate [Member] | Significant Unobservable Inputs (Level 3) [Member] | Not Designated as Hedging Instrument [Member] | Customer Supply Agreement [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Derivative liability, fair value | ||
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Market Approach [Member] | Hot-Rolled Steel Estimate [Member] | Significant Unobservable Inputs (Level 3) [Member] | Not Designated as Hedging Instrument [Member] | Customer Supply Agreement [Member] | Derivative Assets (Current) [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Derivative asset, fair value | $ 58.9 | $ 72.9 |