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Summary of Significant Accounting Policies - Supplemental Cash FLow Information (Details) (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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| Summary of Significant Accounting Policies [Abstract] | |||
| Expenditures Included In Construction Trade Payables | $ 13.7 | $ 31.8 | $ 14.2 |
| Interest Paid, Net | $ 45.4 | $ 37.6 | $ 36.0 |
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- Definition
Expenditures Included In Construction Trade Payables No definition available.
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- Details
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- Definition
The amount of cash paid for interest during the period net of cash paid for interest that is capitalized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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