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Interest Costs (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
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Jun. 30, 2012
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Jun. 30, 2011
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Jun. 30, 2012
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Jun. 30, 2011
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| Interest Cost | ||||
| Interest costs charged to expense | $ 72,770 | $ 76,196 | $ 149,742 | $ 154,414 |
| Interest costs capitalized | 8,128 | 8,068 | 16,082 | 15,318 |
| Total interest costs incurred | 80,898 | 84,264 | 165,824 | 169,732 |
| Interest Costs (Textual) [Abstract] | ||||
| Non cash interest expense included in interest costs | $ 10,384 | $ 9,661 | $ 21,031 | $ 19,234 |
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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
Total interest costs incurred during the period and either capitalized or charged against earnings. 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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- Definition
Interest paid other than in cash for example by issuing additional debt securities. As a noncash item, it is added to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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