Quarterly report pursuant to Section 13 or 15(d)

Benefit Plans (Net Periodic Benefit Cost) (Details)

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Benefit Plans (Net Periodic Benefit Cost) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Oct. 30, 2021
Oct. 31, 2020
Oct. 30, 2021
Oct. 31, 2020
Total Retirement Expense $ 3 $ 2 $ 14 $ 17
Pension Plan [Member]        
Service cost 0 1 1 4
Interest cost 11 13 36 51
Expected return on assets (39) (46) (122) (138)
Recognition of net actuarial (gain) loss 5 11 22 31
Total net periodic benefit cost (23) (21) (63) (52)
Supplementary Retirement Plan [Member]        
Interest cost 3 3 8 11
Recognition of net actuarial (gain) loss 3 3 10 9
Total net periodic benefit cost 6 6 18 20
Other Postretirement Benefits Plan [Member]        
Interest cost 1 1 1 3
Recognition of net actuarial (gain) loss (1) (1) (4) (4)
Total net periodic benefit cost 0 0 (3) (1)
401(k) Qualified Plan [Member] | Defined Contribution Plan [Member]        
Defined contribution plan, cost $ 20 $ 17 $ 59 $ 49