XML 230 R22.htm IDEA: XBRL DOCUMENT v2.4.0.8
Stock-Based Compensation
6 Months Ended
Jun. 30, 2013
Stock-Based Compensation [Abstract]  
Stock-Based Compensation

13. STOCK-BASED COMPENSATION

For employee awards, equity classified stock-based compensation cost is measured at the service inception date or the grant date, based on the estimated achievement of certain performance metrics or the fair value of the award, and is recognized as expense or capitalized as a component of property, plant and equipment over the requisite service period.

Duke Energy recorded pretax stock-based compensation expense as follows.

        
  Three Months Ended June 30,
(in millions)  2013  2012
Restricted Stock Unit Awards $ 12 $ 6
Performance Awards   7   5
Total $ 19 $ 11
Tax benefit associated with stock-based compensation expense $ 8 $ 4
Stock-based compensation costs capitalized   1   1
        

        
  Six Months Ended June 30,
(in millions)  2013  2012
Stock Options $ 2 $ 2
Restricted Stock Unit Awards   26   14
Performance Awards   18   3
Total $ 46 $ 19
Tax benefit associated with stock-based compensation expense $ 18 $ 7
Stock-based compensation costs capitalized   2   1