Quarterly report pursuant to Section 13 or 15(d)

Earnings per Share (Details)

 v2.3.0.11
Earnings per Share (Details)
In Millions
3 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Restricted stock units and stock option awards
   
Income per common share    
Stock-based awards excluded from the computation of diluted earnings per share (in shares) 2.0 1.3
Performance-based stock units (PBUs, maximum that can be earned)
   
Income per common share    
Stock-based awards excluded from the computation of diluted earnings per share as related performance criteria was not met (in shares) 1.7 1.1