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Debt (Details 3) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2009
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| Components of interest expense | |||
| Interest expense on debt and capital lease obligations | $ 372.9 | $ 413.2 | $ 453.5 |
| Accretion of debt discounts | 25.6 | 52.4 | 92.1 |
| Accretion of remediation and risk reserves | 49.8 | 48.1 | 58.1 |
| Capitalized interest | (8.1) | (6.3) | (7.8) |
| Total interest expense | $ 440.2 | $ 507.4 | $ 595.9 |
| X | ||||||||||
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- Definition
Amount recognized for the passage of time of debt that has been discounted to its net present value as of the Allied acquisition date. No definition available.
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- Definition
Amount recognized for the passage of time, typically for liabilities, that have been discounted to their net present values. Excludes accretion associated with asset retirement obligations and the discount associated with the fair market value of the debt acquired from Allied. No definition available.
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| X | ||||||||||
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- Definition
The amount of interest that was capitalized during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The cost of borrowed funds accounted for as interest that was charged against earnings during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
Represents the portion of interest incurred in the period on debt arrangements that was charged against earnings. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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