Annual report pursuant to Section 13 and 15(d)

Share Based Compensation (Details Textual)

v2.4.0.8
Share Based Compensation (Details Textual) (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Share Based Compensation (Textuals) [Abstract]      
Total fair value of awards vested $ 13.7 $ 9.1 $ 11.2
Share Based Compensation (Additional Textuals) [Abstract]      
Typical vesting rate for options granted 3 years    
Cash received for exercises of stock options 14.4 2.3 0.5
Tax benefit realized from stock option exercises 1.8 0.3 0.1
Exercise of stock option 2,498,000   0
Award vested as of grant date 100.00%    
Granted, weighted average grant date fair value per share $ 7.12 $ 6.69 $ 6.24
Total unrecognized compensation cost related to nonvested awards $ 54.8    
Weighted-average expense recognition period 2 years    
Common stock available for future grants 24,400,000    
After May 2004 [Member]
     
Share Based Compensation (Textuals) [Abstract]      
Options granted, term P7Y    
Prior to May 2004 [Member]
     
Share Based Compensation (Textuals) [Abstract]      
Options granted, term P10Y