Quarterly report pursuant to Section 13 or 15(d)

EARNINGS PER SHARE - Additional Information (Detail)

 v2.3.0.11
EARNINGS PER SHARE - Additional Information (Detail)
In Millions
3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Shares excluded from diluted earnings per share that may be issued upon the exercise of employee stock options because such effect would be antidilutive 2.5 9.8 3.7 12.3