Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share (Details Textual)

v2.4.0.6
Earnings Per Share (Details Textual)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Earnings Per Share (Textual) [Abstract]        
Equity grants with anti-dilutive effect 2.6 1.2 2.6 1.2