|
Earnings Per Share Earnings Per Share, Textuals (Details)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2011
|
Dec. 31, 2010
|
Dec. 31, 2009
|
|
| Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] | |||
| Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | 4.9 | 4.8 | 6.2 |