Annual report pursuant to Section 13 and 15(d)

STOCK-BASED COMPENSATION (Additional Information) (Details)

v3.6.0.2
STOCK-BASED COMPENSATION (Additional Information) (Details)
$ in Millions
 1 Months Ended 12 Months Ended
May 31, 2013
shares
Dec. 31, 2016
USD ($)
plan
shares
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of share-based award plans | plan   1    
Increase in reserve under share-based award plan, number of shares (in shares) | shares 11,000,000      
Total income tax benefit recognized for stock-based compensation expense   $ 13.3 $ 13.8 $ 13.7
Excess tax benefits from stock-based compensation plans, operating activities   35.9 30.0 17.7
Excess tax benefit from stock-based compensation, financing activities   $ 35.9 30.0 17.7
Stock options vesting percentage for each year of completed service   33.00%    
Stock options expiration periods   10 years    
Stock options valuation method description  
We use the binomial model to calculate the fair value of stock options granted on or after January 1, 2006.
    
Minimum percentage of target to which shares may be issued   0.00%    
Maximum percentage of target to which shares may be issued   200.00%    
Percentage of target that shares may be issued   100.00%    
Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based payment award options nonvested number of shares | shares   337,940    
Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based payment award options nonvested number of shares | shares   675,880    
Stock Options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shareholder-approved plans | plan   3    
Number of non-shareholder-approved Plans | plan   3    
Total intrinsic value of stock options exercised   $ 64.8 52.3 42.8
Total unrecognized compensation cost   $ 3.0    
Total unrecognized compensation cost, weighted-average period of recognition   1 year 6 months    
Stock Options | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock awards vesting periods (up to)   3 years    
Nonvested Stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total unrecognized compensation cost   $ 29.3    
Total unrecognized compensation cost, weighted-average period of recognition   1 year 11 months    
Total weighted-average fair value of nonvested stock vested, based on the vesting date   $ 71.7 65.0 34.4
Total weighted-average fair value of nonvested stock vested, based on the grant date   $ 38.8 $ 31.3 $ 17.2
Nonvested Stock | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock awards vesting periods (up to)   1 year    
Nonvested Stock | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock awards vesting periods (up to)   3 years