XML 16 R23.htm IDEA: XBRL DOCUMENT  v2.3.0.11
NET INCOME PER SHARE (Details)
In Millions
3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
NET INCOME PER SHARE [Abstract]        
Other shares excluded from the calculation of diluted earnings per share (in shares) 2.2 0.1 2.2 0.1