Annual report pursuant to Section 13 and 15(d)

STOCK INCENTIVE AND STOCK OPTION PLANS (Details)

v2.4.0.8
STOCK INCENTIVE AND STOCK OPTION PLANS (Details) (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2013
option
Dec. 31, 2012
Dec. 31, 2011
May 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]        
Number of stock-based awards authorized to be granted to executives, employees and non-employee directors under the 2012 Omnibus Plant (in shares)       3,500,000
Stock options' expiration from the date of grant 10 years      
Stock options vesting period 2 years      
Stock options granted for every even block of 100 KESIP shares purchased by the employee 50      
Number of shares in every even block of KESIP shares 100      
Compensation expense (net of estimated forfeitures) $ 34 $ 35 $ 40  
Excess tax benefit / (deficiency) associated with share-based plans 13 14 5  
Total unrecognized compensation expense (net of estimated forfeitures) $ 34      
Weighted-average maximum period of recognition of total unrecognized compensation expense related to nonvested awards 1 year      
Performance Shares
       
Share-based Compensation Arrangement by Share-based Payment Award        
Performance period 3 years      
Performance Shares | Minimum
       
Share-based Compensation Arrangement by Share-based Payment Award        
Target award based on the actual ROE performance (as a percent) 0.00%      
Performance Shares | Maximum
       
Share-based Compensation Arrangement by Share-based Payment Award        
Target award based on the actual ROE performance (as a percent) 200.00%      
Restricted Shares
       
Share-based Compensation Arrangement by Share-based Payment Award        
Restricted shares released after two years (as a percent) 33.33%      
Period after which portion of issued restricted shares will be released 2 years      
Restricted shares released on the grant date each year after the first two years (as a percent) 33.33%      
Restriction period to recognize compensation expense 4 years