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Summary of Significant Accounting Policies Supplemental Cash Flow Information (Details) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
| Supplemental Cash Flow Elements [Abstract] | |||
| Payments to Acquire Property, Plant, and Equipment | $ 612,161 | $ 620,895 | $ 953,882 |
| Capital expenditures | 428,420 | 872,094 | 1,305,696 |
| Interest Expense | $ 449,345 | $ 526,530 | $ 359,795 |