Annual report pursuant to Section 13 and 15(d)

Retirement Plans (Narrative) (Details)

v3.7.0.1
Retirement Plans (Narrative) (Details)
$ in Millions
12 Months Ended
Jan. 28, 2017
USD ($)
yr
d
Jan. 30, 2016
USD ($)
Jan. 31, 2015
USD ($)
2016 reduction in service cost and interest cost $ 36    
Number of hours required for participation in defined benefit and defined contribution plans 1,000    
Liability under qualified defined contribution plan $ 102 $ 97  
Minimum [Member]      
Range of restrictions on investment redemption frequency, number of times allowed per year | d 2    
Maximum [Member]      
Range of restrictions on investment redemption frequency, number of times allowed per year | d 365    
Supplemental Employee Retirement Plan      
Discount rate 4.07% 4.23%  
Accumulated benefit obligation for defined benefit plan $ 747 $ 823  
Defined Benefit Plan, Future Amortization of Gain (Loss) 8    
Company contributions to defined benefit pension plan $ 124 $ 58  
Discount rate for interest cost (percent)   3.55% 4.50%
Supplemental Employee Retirement Plan | Minimum [Member]      
Discount rate for interest cost (percent) 2.65%    
Supplemental Employee Retirement Plan | Maximum [Member]      
Discount rate for interest cost (percent) 3.16%    
Pension Plan [Member]      
Discount rate 4.00% 4.17%  
Expected long-term return on plan assets 7.00% 7.00% 7.50%
Accumulated benefit obligation for defined benefit plan $ 3,464 $ 3,574  
Defined Benefit Plan, Future Amortization of Gain (Loss) 33    
Unfunded commitments to certain of these investments 72 96  
Company contributions to defined benefit pension plan $ 0 $ 0  
Discount rate for service cost (percent)   3.55% 4.50%
Discount rate for interest cost (percent)   3.55% 4.50%
Pension Plan [Member] | Minimum [Member]      
Range of investment lock-up period, in years | yr 2    
Range of advance notice requirements for investment redemption, in days | d 60    
Discount rate for service cost (percent) 3.79%    
Discount rate for interest cost (percent) 2.96%    
Pension Plan [Member] | Maximum [Member]      
Range of investment lock-up period, in years | yr 14    
Range of advance notice requirements for investment redemption, in days | d 90    
Discount rate for service cost (percent) 4.26%    
Discount rate for interest cost (percent) 3.30%    
Pension Plan [Member] | Equity securities [Member]      
Target allocation for equity securities in defined benefit plan 50.00%    
Pension Plan [Member] | Debt Securities [Member]      
Target allocation for equity securities in defined benefit plan 40.00%    
Pension Plan [Member] | Real Estate Funds [Member]      
Target allocation for equity securities in defined benefit plan 5.00%    
Pension Plan [Member] | Private equity [Member]      
Target allocation for equity securities in defined benefit plan 5.00%    
Defined Contribution Qualified Plan [Member] | Other Postretirement Benefit Plan [Member]      
Employee retirement plan expense $ 94 $ 88 $ 89
Non qualified defined contribution plan [Member] | Other Postretirement Benefit Plan [Member]      
Employee retirement plan expense 2 2 $ 2
Investments 20 13  
Management [Member] | Other Postretirement Benefit Plan [Member]      
Liability for deferred compensation plan reflected in other liabilities 37 39  
Other Liabilities [Member] | Non qualified defined contribution plan [Member] | Other Postretirement Benefit Plan [Member]      
Liability under non-qualified defined contribution plan 20 13  
Accounts Payable and Accrued Liabilities [Member] | Non qualified defined contribution plan [Member] | Other Postretirement Benefit Plan [Member]      
Liability under non-qualified defined contribution plan $ 2 $ 2  
Previously Reported | Pension Plan [Member]      
Discount rate for service cost (percent) 4.17%    
Discount rate for interest cost (percent) 4.23%