Annual report pursuant to Section 13 and 15(d)

Retirement Benefits Plans (Estimated Future Benefit Payments) (Details)

v3.8.0.1
Retirement Benefits Plans (Estimated Future Benefit Payments) (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Jan. 30, 2016
Feb. 03, 2018
Jan. 28, 2017
Jan. 30, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)   $ 21 $ 19 $ 162
Primary and Supplemental Pension Plans Total [Member]        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)   7 8 8
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)   21 19 162
Defined Benefit Plan, Service Cost   42 55 69
Defined Benefit Plan, Interest Cost   150 160 203
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement   (13) 0 (180)
Pension Plan [Member]        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)   7 8 8
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)   (11) 1 154
Defined Benefit Plan, Service Cost   42 55 69
Defined Benefit Plan, Interest Cost   143 153 196
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]        
2018   195    
2019   196    
2020   199    
2021   202    
2022   206    
2023-2027   1,080    
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement $ 180 (13) 0 (180)
Supplemental Employee Retirement Plan [Member]        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)   0 0 0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)   32 18 8
Defined Benefit Plan, Service Cost   0 0 0
Defined Benefit Plan, Interest Cost   7 7 7
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]        
2018   29    
2019   28    
2020   26    
2021   21    
2022   8    
2023-2027   $ 44    
Other Postretirement Benefit Plan, Defined Benefit [Member]        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)     $ (17) $ (7)