|
Equity Company Information (Narrative) (Details)
|
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2011
|
Dec. 31, 2010
|
Dec. 31, 2009
|
|
| Equity Company Information [Abstract] | |||
| Share of equity company sales revenues from consolidated companies | 19.00% | 18.00% | 19.00% |