XML 36 R21.htm IDEA: XBRL DOCUMENT v2.4.0.8
Earnings Per Share - Additional Information (Detail) (Stock Option [Member])
In Millions, unless otherwise specified
6 Months Ended
Jun. 30, 2014
Stock Option [Member]
 
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]  
Anti-dilutive shares not included in the computation of basic and diluted income per share 0.1