Annual report pursuant to Section 13 and 15(d)

STOCK-BASED COMPENSATION PLAN (Narrative) (Details)

v3.7.0.1
STOCK-BASED COMPENSATION PLAN (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Mar. 18, 2016
Jan. 28, 2017
Jan. 30, 2016
Jan. 31, 2015
Feb. 01, 2014
Feb. 02, 2013
Jan. 28, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Expected term         3 months 3 months 3 months
Intrinsic value of options exercised   $ 11.8 $ 13.2 $ 3.7      
Minimum statutory tax withholding related to vested restricted shares   21.9 21.6 15.8      
Compensation Expense   $ 60.3 52.3 37.4      
Granted (shares)   897,479          
Total fair value of vested restricted shares   $ 42.4 $ 36.8 $ 31.8      
Employee Stock Option [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Expected term   6 years 6 months 2 years 11 days        
Service Based Awards [Member] | Restricted Stock Units (RSUs) [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period   3 years          
Restricted stock granted under service and performance awards (in shares)   500,000 300,000 500,000      
Compensation Expense   $ 28.2 $ 22.6 $ 22.2      
Unrecognized compensation expense   $ 30.6          
Weighted average period of recognition (in months)   1 year 10 months 9 days          
Eip [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period       3 years      
Expected term       10 years      
Shares granted under fixed stock option compensation plans       18,000,000      
EOEP [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period       3 years      
Expected term       10 years      
Director Deferred Compensation Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Expected term       10 years      
Percentage of the share price of common stock used in the calculation to determine the number of options issued to a director (in hundredths)       33.00%      
Omnibus Incentive Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period       3 years      
Expected term       10 years      
Shares available for grant       4,000,000      
Omnibus Incentive Plan [Member] | Employee Stock Option [Member] | Directors and Officers [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period   5 years          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross   200,000          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value   $ 4.0          
Omnibus Incentive Plan [Member] | Service Based Awards [Member] | Ratable Annual Vesting [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Compensation expensed over the service period     $ 7.9        
Omnibus Incentive Plan [Member] | Performance And Service Based Awards [Member] | Ratable Annual Vesting [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Restricted stock granted under service and performance awards (in shares)   200,000 100,000        
Compensation expensed over the service period   $ 17.1 $ 11.3        
Compensation Expense     8.7        
Omnibus Incentive Plan [Member] | Performance And Service Based Awards [Member] | Certain officers [Member] | Ratable Annual Vesting [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Restricted stock granted under service and performance awards (in shares)       200,000      
Compensation expensed over the service period       $ 10.0      
Allocated Share Based Compensation Expense Restricted Stock2012 Grants   1.0 1.6 6.7      
Omnibus Incentive Plan [Member] | Performance And Service Based Awards [Member] | President [Member] | Ratable Annual Vesting [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 5 years            
Compensation Expense   0.8          
Granted (shares) 100,000            
Target Value $ 5.0            
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period 5 years            
Omnibus Incentive Plan [Member] | Performance And Service Based Awards [Member] | Chief Executive Officer [Member] | Ratable Annual Vesting [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Restricted stock granted under service and performance awards (in shares)           200,000  
Compensation Expense   $ 2.0 $ 2.0 $ 2.0      
Target Value           $ 10.0  
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period     5 years        
Omnibus Incentive Plan [Member] | Performance And Service Based Awards [Member] | Restricted Stock Units (RSUs) [Member] | Certain officers [Member] | Vesting at End of Performance Period [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Individual potential target award, minimum (in hundredths)       0.00% 0.00%    
Individual Potential Target Award Maximum       200.00% 200.00%    
Omnibus Incentive Plan [Member] | Performance Shares [Member] | Restricted Stock Units (RSUs) [Member] | Certain officers [Member] | Vesting at End of Performance Period [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Target Value       $ 2.0 $ 1.7    
Employee Stock Purchase Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Weighted average fair value of granted purchase rights (in dollars per share)   $ 13,430,000.00 $ 11,650,000.00 $ 8,170,000.00      
Compensation Expense   $ 1.6 $ 1.0 $ 0.8      
Employee stock purchase plan shares of common stock authorized for issuance   8,707,692          
Amount allowed to be withheld to purchase Common Stock   10.00%          
ESPP Plan purchase price of stock (in hundredths)   85.00%          
Shares sold under the ESPP   4,990,145          
2016 Restricted Stock Grant - Officers [Member] | Omnibus Incentive Plan [Member] | Performance And Service Based Awards [Member] | Certain officers [Member] | Ratable Annual Vesting [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Compensation Expense   $ 11.4          
2016 Restricted Stock Grant - Officers [Member] | Omnibus Incentive Plan [Member] | Performance And Service Based Awards [Member] | Restricted Stock Units (RSUs) [Member] | Certain officers [Member] | Vesting at End of Performance Period [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Target Value   $ 3.2          
Individual potential target award, minimum (in hundredths)   0.00%          
Individual Potential Target Award Maximum   200.00%          
2016 Restricted Stock Grant - Officers [Member] | Omnibus Incentive Plan [Member] | Performance Shares [Member] | Restricted Stock Units (RSUs) [Member] | Certain officers [Member] | Vesting at End of Performance Period [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Compensation Expense   $ 2.0          
2015 Restricted Stock Grant - Officers [Member] | Omnibus Incentive Plan [Member] | Performance And Service Based Awards [Member] | Certain officers [Member] | Ratable Annual Vesting [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Compensation Expense   1.8          
2015 Restricted Stock Grant - Officers [Member] | Omnibus Incentive Plan [Member] | Performance And Service Based Awards [Member] | Restricted Stock Units (RSUs) [Member] | Certain officers [Member] | Vesting at End of Performance Period [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Target Value     $ 2.3        
Individual potential target award, minimum (in hundredths)     0.00%        
Individual Potential Target Award Maximum     200.00%        
2015 Restricted Stock Grant - Officers [Member] | Omnibus Incentive Plan [Member] | Performance Shares [Member] | Restricted Stock Units (RSUs) [Member] | Certain officers [Member] | Vesting at End of Performance Period [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Compensation Expense   2.3 $ 1.4        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value   4.6          
2014 Restricted Stock Grant - Officers [Member] | Omnibus Incentive Plan [Member] | Performance Shares [Member] | Restricted Stock Units (RSUs) [Member] | Certain officers [Member] | Vesting at End of Performance Period [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Compensation Expense   0.3 0.4 1.0      
2013 Restricted Stock Grant - Officers [Member] | Omnibus Incentive Plan [Member] | Performance Shares [Member] | Restricted Stock Units (RSUs) [Member] | Certain officers [Member] | Vesting at End of Performance Period [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Compensation Expense       $ 0.4 $ 1.0    
Family Dollar [Member] | Employee Stock Option [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Compensation Expense   $ 2.6 6.2        
Conversion of Stock, Award Exchange Ratio   1.0000          
Conversion of Stock, Shares Converted   1,500,000          
Family Dollar [Member] | Restricted Stock Units (RSUs) [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Compensation Expense   $ 1.8 $ 2.8        
Conversion of Stock, Award Exchange Ratio   1.0000          
Conversion of Stock, Shares Converted   100,000          
2013 LTPP REGRANT [Member] | Omnibus Incentive Plan [Member] | Performance And Service Based Awards [Member] | Restricted Stock Units (RSUs) [Member] | Certain officers [Member] | Vesting at End of Performance Period [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period     1 year        
Compensation Expense     $ 2.4        
Target Value     2.2        
2013 ORIGINAL LTPP GRANT [Member] | Omnibus Incentive Plan [Member] | Performance And Service Based Awards [Member] | Restricted Stock Units (RSUs) [Member] | Certain officers [Member] | Vesting at End of Performance Period [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Compensation Expense     $ 1.2        
Family Dollar [Member] | Service Based Awards [Member] | Restricted Stock Units (RSUs) [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period     3 years        
Compensation Expense   $ 2.0 $ 1.0        
Granted (shares)     100,000