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Stockholders' Equity - Additional Information (Detail) (USD $)
 3 Months Ended 0 Months Ended 1 Months Ended 3 Months Ended 12 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Jun. 06, 2012
Stock Repurchase Plan
Jan. 31, 2014
Stock Repurchase Plan
Mar. 31, 2014
Stock Repurchase Plan
Dec. 31, 2013
Stock Repurchase Plan
Stockholders Equity [Line Items]            
Board of Directors authorized stock repurchase program     $ 250,000,000      
Stock repurchase remaining authorized amount         128,800,000  
Number of shares that have been repurchased and retired during the period         0 1,956,900
Average price per share           $ 36.35
Value of shares that have been repurchased and retired during the period           71,100,000
Stock repurchase program, period         2 years  
Payment for share repurchase 4,367,000 28,758,000   4,400,000   66,700,000
Accrued liability related to repurchase of share         $ 0 $ 4,400,000