Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share (Details Textual)

v2.3.0.15
Earnings Per Share (Details Textual)
In Millions
3 Months Ended 9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Earnings Per Share (Textual) [Abstract]        
Equity grants with anti-dilutive effect 2.0 1.6 2.1 3.4