XML 67 R116.htm IDEA: XBRL DOCUMENT v3.2.0.727
Equity (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 4 Months Ended 12 Months Ended
Dec. 31, 2014
Apr. 30, 2015
Dec. 31, 2014
Dec. 31, 2012
Dec. 31, 2011
Equity, Treasury Stock [Line Items]          
Treasury stock acquired, value       $ 75,000  
Share reissuances, treasury stock, value     $ 104,427    
Convertible Debt [Member]          
Equity, Treasury Stock [Line Items]          
Share reissuances, treasury stock (in shares)     6,600,000    
Share reissuances, treasury stock, value     $ 104,400    
2014 Share Repurchase Program [Member]          
Equity, Treasury Stock [Line Items]          
Share repurchase program, amount authorized, value $ 100,000   $ 100,000    
2014 Share Repurchase Program [Member] | Subsequent Event [Member]          
Equity, Treasury Stock [Line Items]          
Treasury stock acquired, value   $ 100,000      
2014 Share Repurchase Program [Member] | Common Stock [Member]          
Equity, Treasury Stock [Line Items]          
Treasury stock acquired (in shares) 0        
2014 Share Repurchase Program [Member] | Common Stock [Member] | Subsequent Event [Member]          
Equity, Treasury Stock [Line Items]          
Treasury stock acquired (in shares)   5,200,000      
2011 Share Repurchase Program [Member]          
Equity, Treasury Stock [Line Items]          
Share repurchase program, amount authorized, value         $ 150,000
Treasury stock acquired, value       $ 75,000  
2011 Share Repurchase Program [Member] | Common Stock [Member]          
Equity, Treasury Stock [Line Items]          
Treasury stock acquired (in shares)       4,900,000