Retirement Benefit Plans (Net Periodic Expense) (Details) (USD $)
 0 Months Ended 1 Months Ended 3 Months Ended 12 Months Ended 0 Months Ended 1 Months Ended 2 Months Ended 3 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended 12 Months Ended 0 Months Ended 9 Months Ended 12 Months Ended 0 Months Ended 9 Months Ended 0 Months Ended 12 Months Ended
Oct. 15, 2011
Oct. 15, 2011
employee
Aug. 31, 2011
employee
Oct. 27, 2012
Feb. 01, 2014
Feb. 02, 2013
Jan. 28, 2012
Sep. 30, 2012
Jan. 29, 2011
Sep. 30, 2012
Primary Pension Plan
Oct. 15, 2011
Primary Pension Plan
Sep. 30, 2012
Primary Pension Plan
participant
Feb. 02, 2013
Primary Pension Plan
Nov. 30, 2012
Primary Pension Plan
participant
Feb. 01, 2014
Primary Pension Plan
Feb. 02, 2013
Primary Pension Plan
Jan. 28, 2012
Primary Pension Plan
Oct. 27, 2012
Primary Pension Plan
Sep. 30, 2012
Supplemental Pension Plans
Feb. 01, 2014
Supplemental Pension Plans
Feb. 02, 2013
Supplemental Pension Plans
Jan. 28, 2012
Supplemental Pension Plans
Oct. 27, 2012
Supplemental Pension Plans
Feb. 01, 2014
Primary and Supplemental Pension Plans Total
Feb. 02, 2013
Primary and Supplemental Pension Plans Total
Jan. 28, 2012
Primary and Supplemental Pension Plans Total
Oct. 15, 2011
Supplemental Retirement Program [Member]
Oct. 15, 2011
Supplemental Retirement Program [Member]
Feb. 01, 2014
Supplemental Retirement Program [Member]
Feb. 01, 2014
Supplemental Retirement Program [Member]
Minimum [Member]
Feb. 01, 2014
Supplemental Retirement Program [Member]
Maximum [Member]
Feb. 01, 2014
Social Security Benefits [Member]
Feb. 01, 2014
Primary Pension Plan and Benefit Restoration Plan [Member]
Oct. 15, 2011
Benefit Restoration Plan [Member]
Oct. 15, 2011
Benefit Restoration Plan [Member]
Sep. 30, 2012
Other Postretirement Benefit Plan, Defined Benefit [Member]
Feb. 01, 2014
Other Postretirement Benefit Plan, Defined Benefit [Member]
Feb. 02, 2013
Other Postretirement Benefit Plan, Defined Benefit [Member]
Jan. 28, 2012
Other Postretirement Benefit Plan, Defined Benefit [Member]
Oct. 27, 2012
Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]                                                                                
Employee retirement age                                                         60 years     62 years 65 years              
Employee retirement age for equal social security benefits                                                           60 years 62 years                  
Termination of company-paid term life insurance, employee age                                                         70 years                      
Termination of employee-paid term life insurance, employee age                                                         65 years                      
Enhanced retirement benefits, number of employees eligible     8,000                                                                          
Enhanced retirement benefits, number of employees accepted   4,000                                                                            
Special termination benefits $ 176,000,000                   $ 133,000,000       $ 0 $ 0       $ 0 $ 0           $ 36,000,000             $ 7,000,000            
Curtailments charges 1,000,000     7,000,000                                                                        
Discount rate 5.06% 5.06%     4.89% 4.19% 4.82% 4.25% 5.65%                                                              
Projected benefit obligation, period increase/(decrease)                   166,000,000                 55,000,000                 71,000,000             24,000,000 (5,000,000)        
Effect of curtailments on projected benefit obligation                                   80,000,000         13,000,000                                 2,000,000
Balance at measurement date                   5,550,000,000   5,550,000,000 5,042,000,000   4,477,000,000 5,042,000,000 5,297,000,000   300,000,000 219,000,000 303,000,000 309,000,000                           18,000,000 15,000,000 18,000,000 24,000,000  
Defined benefit plan, description of plan amendment         In September 2012, as a result of a plan amendment, we offered approximately 35,000 participants in the Primary Pension Plan who separated from service and had a deferred vested benefit as of August 31, 2012 the option to receive a lump-sum settlement payment. These participants had until November 30, 2012 to elect to receive the lump-sum settlement payment with the payments to be made by the Company beginning on December 4, 2012 using assets from the Primary Pension Plan.  As a result of the approximately 25,000 participants who elected the lump-sum settlements, we made payments totaling $439 million from the Primary Pension Plan’s assets and recognized settlement expense of $148 million for unrecognized actuarial losses.  We also amended the Primary Pension Plan to allow for participants that separate from the Company on or after September 1, 2012 the option of a lump-sum settlement payment from the plan.  The amendment also provided for automatic lump-sum settlement payments for participants with vested balances less than $5,000.                                                                      
Number of employees offered lump sum settlement                       35,000                                                        
Number of employees that accepted lump sum settlement                           25,000                                                    
Payments for lump sum settlement                         439,000,000                                                      
Automatic lump sum settlement, maximum vested balance (less than)         5,000                                                                      
Funded status of plan percentage, description         As of the end of 2012, the funded status of the Primary Pension Plan was just under 100%. The PBO is the present value of benefits earned to date by plan participants, including the effect of assumed future salary increases. Under the Employee Retirement Income Security Act of 1974 (ERISA), the funded status of the plan exceeded 100% as of December 31, 2012 and 2011, the qualified pension plan’s year end.                                                                      
Net Periodic Benefit Expense/(Income) [Abstract]                                                                                
Service cost                             78,000,000 87,000,000 88,000,000     0 1,000,000 2,000,000   78,000,000 88,000,000 90,000,000                            
Interest cost                             204,000,000 242,000,000 247,000,000     12,000,000 13,000,000 13,000,000   216,000,000 255,000,000 260,000,000                     1,000,000 1,000,000 1,000,000  
Expected return on plan assets                             (340,000,000) (382,000,000) (385,000,000)             (340,000,000) (382,000,000) (385,000,000)                            
Amortization of actuarial loss/(gain)                             152,000,000 220,000,000 137,000,000     24,000,000 23,000,000 18,000,000   176,000,000 243,000,000 155,000,000                     (1,000,000) (1,000,000) (1,000,000)  
Amortization of prior service cost/(credit)                             6,000,000 0 0     1,000,000 1,000,000 1,000,000   7,000,000 1,000,000 1,000,000                     (8,000,000) (14,000,000) (25,000,000)  
Settlement expense                         (148,000,000)   0 148,000,000 0             0 148,000,000 0                            
Net periodic benefit expense/(income)         $ 137,000,000 $ 353,000,000 $ 121,000,000               $ 100,000,000 $ 315,000,000 $ 87,000,000     $ 37,000,000 $ 38,000,000 $ 34,000,000   $ 137,000,000 $ 353,000,000 $ 121,000,000                     $ (8,000,000) $ (14,000,000) $ (25,000,000)