XML 93 R66.htm IDEA: XBRL DOCUMENT v2.4.0.6
Shareholders' Equity (Narrative) (Details) (USD $)
 1 Months Ended 12 Months Ended
Feb. 28, 2006
Oct. 31, 2005
Oct. 31, 2002
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Stockholders' Equity Note [Abstract]            
Stock repurchase program, authorized amount $ 200,000,000 $ 100,000,000 $ 100,000,000      
Total stock repurchase authorization       400,000,000    
Shares repurchased under authorized repurchase programs       9,688,900    
Value of shares repurchased under authorized repurchase programs       297,700,000    
Stock Repurchased Under Repurchase Program During Period, Value       0 0 0
Remaining value of stock repurchase programs authorization       102,300,000    
Payments for Repurchase of Common Stock       $ 961,000 $ 2,836,000 $ 4,023,000