Annual report pursuant to Section 13 and 15(d)

STOCK-BASED COMPENSATION PLAN (Details)

v2.4.0.6
STOCK-BASED COMPENSATION PLAN (Details) (USD $)
In Millions, except Share data, unless otherwise specified
 12 Months Ended 12 Months Ended
Jan. 28, 2012
Jan. 29, 2011
Jan. 30, 2010
Jan. 28, 2012
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range01 [Member]
Jan. 28, 2012
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range02 [Member]
Jan. 28, 2012
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range03 [Member]
Jan. 28, 2012
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range04 [Member]
Jan. 28, 2012
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range05 [Member]
Jan. 28, 2012
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range06 [Member]
Jan. 28, 2012
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range07 [Member]
Jan. 28, 2012
Service Based Awards [Member]
Jan. 29, 2011
Service Based Awards [Member]
Jan. 30, 2010
Service Based Awards [Member]
Jan. 28, 2012
Performance And Service Based Awards [Member]
Jan. 29, 2011
Performance And Service Based Awards [Member]
Jan. 30, 2010
Performance And Service Based Awards [Member]
Jan. 28, 2012
Non-qualified stock option plan (SOP Plan) [Member]
Dec. 31, 1994
Non-qualified stock option plan (SOP Plan) [Member]
Dec. 31, 1993
Non-qualified stock option plan (SOP Plan) [Member]
Jan. 28, 2012
Stock Incentive Plan (SIP Plan) [Member]
Jan. 28, 2012
Equity Incentive Plan (EIP Plan) [Member]
Jan. 28, 2012
Executive Officer Equity Incentive Plan (EOEP Plan) [Member]
Jan. 28, 2012
Director Deferred Compensation Plan [Member]
Feb. 02, 2013
Stock Options Plans [Member]
Jan. 28, 2012
Stock Options Plans [Member]
Jan. 29, 2011
Stock Options Plans [Member]
Jan. 30, 2010
Stock Options Plans [Member]
Jan. 30, 2010
Restricted Stock Plans [Member]
Jan. 28, 2012
Employee Stock Purchase Plan [Member]
Jan. 29, 2011
Employee Stock Purchase Plan [Member]
Jan. 30, 2010
Employee Stock Purchase Plan [Member]
Jan. 28, 2012
Omnibus Incentive Plan [Member]
Fixed Stock Option Compensation Plans [Abstract]                                                                
Shares granted under fixed stock option compensation plans                                   1,572,434.0 1,570,896.0 18,900,000.0 9,000,000.0                      
Shares available for grant                                                               2,000,000.0
Exercise price per share granted (dollars per share)                                 $ 0.57                              
Vesting period (in years)                                       three three three   three-year       three-year       three
Stock option maximum term (in years)                                       ten ten ten ten                 ten
Term on treasury bond used to determine rate of interest earned on deferred director fees (in years)                                             thirty                  
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%                  
Stock Options granted under service and performance awards (in shares)                                                 100,000.0 100,000.0 100,000.0          
Restricted stock granted under service and performance awards (in shares)                     400,000.0 600,000.0 600,000.0 100,000.0 200,000.0 200,000.0                                
Compensation Expense [Abstract]                                                                
Compensation expense $ 31.0 $ 27.9 $ 21.7               $ 19.2 $ 17.3 $ 12.8 $ 5.4                     $ 1.1 $ 2.3 $ 3.7   $ 0.9 $ 0.9 $ 0.9 $ 0.4
Compensation expense on RSUs granted in 2009                           1.0 2.6 2.7                                
Compensation expense on RSUs granted in 2010                           1.8 4.8                                  
Unrecognized compensation expense                     23.0                                          
Weighted average period of recognition (in months)                     21                                          
Compensation expensed over the service period                           7.3 7.8 6.4                                
Minimum statutory tax withholding related to vested restricted shares 13.2 11.1 4.8                                                          
Total fair value of vested restricted shares 20.9 19.1 9.6                                                          
Intrinsic value of options exercised 16.4 16.0 11.0                                                          
Summary of Nonvested Shares [Roll Forward]                                                                
Nonvested, beginning of period 1,444,761                                                              
Granted 534,030                                                              
Vested (675,980)                                                              
Forfeited (47,086)                                                              
Nonvested, end of period 1,255,725 1,444,761                                                            
Weighted average grant date fair value, nonvested, beginning of period (dollars per share) $ 33.88                                                              
Weighted average grant date fair value, granted (dollars per share) $ 56.99                                                              
Weighted average grant date fair value, vested (dollars per share) $ 30.94                                                              
Weighted average grant date fair value, forfeited (dollars per share) $ 42.82                                                              
Weighted average grant date fair value, nonvested, end of period (dollars per share) $ 44.97 $ 33.88                                                            
Weighted average assumptions [Abstract]                                                                
Expected term (in months) 3 3 3                                                          
Expected volatility (in hundredths) 12.60% 13.20% 17.40%                                                          
Risk free interest rate (in hundredths) 0.10% 0.10% 1.80%                                                          
Options granted 7,639                                                              
Weighted average fair value of granted purchase rights (in dollars per share)                                                         $ 10.43 $ 6.59 $ 5.19  
Changes in options outstanding [Abstract]                                                                
Number of options outstanding, beginning balance 1,022,071                                                              
Number of options granted 7,639                                                              
Number of options exercised (355,640)                                                              
Number of options forfeited (18,517)                                                              
Number of options outstanding, ending balance 655,553 1,022,071                                                            
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]                                                                
Weighted average exercise price per option, outstanding, beginning balance (dollars per share) $ 19.16                                                              
Weighted average exercise price per option granted (dollars per share) $ 69.41                                                              
Weighted average exercise price per option exercised (dollars per share) $ 18.40                                                              
Weighted average exercise price per option forfeited (dollars per share) $ 14.31                                                              
Weighted average exercise price per option, outstanding, ending balance (dollars per share)   $ 19.16                                                            
Weighted average remaining contractual term of options outstanding (in years) 3.6000                                                              
Aggregate intrinsic value of options outstanding 13.3                                                              
Stock options vested and expected to vest [Abstract]                                                                
Number of options vested and expected to vest 655,553                                                              
Weighted average exercise price per option, vested and expected to vest options (dollars per share) $ 20.29                                                              
Weighted average remaining contractual term, vested and expected to vest options (in years) 3.6000                                                              
Aggregate intrinsic value, vested and expected to vest options 13.3                                                              
Number of options exercisable 630,554                                                              
Weighted average exercise price per exercisable option (dollars per share) $ 19.97                                                              
Weighted average remaining contractual term, exercisable options (in years) 3.5000                                                              
Aggregate intrinsic value, exercisable options 40.8                                                              
Target Value                                                               $ 0.7
Individual potential target award, minimum (in hundredths)                                                               0.00%
Individual Potential Target Award Maximum                                                               200.00%
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]                                                                
Minimum price of options outstanding, end of the period (dollars per share)         $ 0.58 $ 14.19 $ 19.87 $ 29.05 $ 32.25 $ 56.09                                            
Maximum price of options outstanding, end of the period (dollars per share)       $ 0.57 $ 14.18 $ 19.86 $ 29.04 $ 32.24 $ 56.08 $ 84.64                                            
Options outstanding       921 100,419 311,356 219,231 5,525 10,462 7,639                                            
Options outstanding, weighted average remaining contractual life (in years)         1.1000 3.8000 3.7000 7.8000 8.6000 9.5000                                            
Options outstanding, weighted average exercise price (dollars per share)       $ 0.57 $ 13.35 $ 17.50 $ 24.26 $ 32.22 $ 46.52 $ 69.41                                            
Options exercisable       921 100,419 311,356 194,232 5,525 10,462 7,639                                            
Options exercisable, weighted average exercise price (dollars per share)       $ 0.57 $ 13.35 $ 17.50 $ 23.70 $ 32.22 $ 46.52 $ 69.41                                            
Employee Stock Purchase Plan [Abstract]                                                                
Employee stock purchase plan shares of common stock authorized for issuance   2,639,063                                                            
Percentage of employee compensation eligible to purchase shares of common stock, maximum (in hundredths)   10.00%                                                            
ESPP Plan purchase price of stock (in hundredths)   85.00%                                                            
Shares sold under the ESPP   2,219,369