v2.3.0.11
Earnings Per Share (Computation of Diluted Average Common Shares) (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Earnings Per Share        
Basic average common shares outstanding 280,200,000 277,600,000 279,800,000 277,300,000
Shares contingently issuable under employee stock plans 1,078,000 300,000 1,061,000 300,000
Shares restricted under employee stock plans 342,000 511,000 326,000 480,000
Forward Agreements 5,422,000   4,989,000  
Diluted Average Common Shares 287,100,000 278,400,000 286,200,000 278,000,000