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Capital Stock - Additional Information (Detail) (USD $)
In Millions, except Share data, unless otherwise specified
 12 Months Ended 0 Months Ended
Dec. 31, 2013
Jun. 30, 2013
Dec. 31, 2012
Jul. 25, 2012
Sep. 27, 2011
Feb. 25, 2014
Subsequent Event
Class of Stock [Line Items]            
Common stock, shares authorized 750,000,000   750,000,000   750,000,000  
Common Stock, par value $ 0.01   $ 0.01      
Dividend declared, per share $ 0.12 $ 0.10        
Percentage of increase in quarterly cash dividend 20.00%          
Preferred stock, shares authorized 60,000,000          
Preferred stock, par value $ 0.01          
Stock repurchase program, authorized amount $ 150         $ 150
Stock Repurchase Program, Remaining Authorized Repurchase Amount $ 89.2          
Share repurchase approval period       3 years   2 years
Share repurchase program, repurchase period end date       Jul. 25, 2015   Feb. 25, 2016