Annual report pursuant to Section 13 and 15(d)

Retirement Plans (Retirement Expenses) (Details)

v3.7.0.1
Retirement Plans (Retirement Expenses) (Details) - USD ($)
$ in Millions
12 Months Ended
Jan. 28, 2017
Jan. 30, 2016
Jan. 31, 2015
Total Retirement Expense $ 44 $ 77 $ 65
Pension Plan [Member]      
Total net periodic benefit cost (83) (54) (64)
Supplemental Employee Retirement Plan      
Total net periodic benefit cost 31 41 38
Non qualified defined contribution plan [Member] | Other Postretirement Benefit Plan [Member]      
Defined Contribution Plan, Cost Recognized $ 2 $ 2 $ 2