PARENT COMPANY FINANCIAL INFORMATION (Details 2) (USD $)
Dec. 31, 2013
Dec. 31, 2012
Additional Disclosure    
Preferred Stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred Stock, shares authorized 100,000,000 100,000,000
Preferred Stock, shares issued 0 0
Preferred Stock, shares outstanding 0 0
Common Stock, par value (in dollars per share) $ 0.01 $ 0.01
Common Stock, shares authorized 300,000,000 300,000,000
Common Stock, shares issued 82,298,707 82,279,507
Common Stock, shares outstanding 77,123,026 79,297,478
Treasury Stock, shares 5,175,681 2,982,029
Beneficial Mutual Bancorp, Inc.
   
Additional Disclosure    
Preferred Stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred Stock, shares authorized 100,000,000 100,000,000
Preferred Stock, shares issued 0 0
Preferred Stock, shares outstanding 0 0
Common Stock, par value (in dollars per share) $ 0.01 $ 0.01
Common Stock, shares authorized 300,000,000 300,000,000
Common Stock, shares issued 82,298,707 82,279,507
Common Stock, shares outstanding 77,123,026 79,297,478
Treasury Stock, shares 5,175,681 2,982,029