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Retirement Plans (Net Periodic Benefit Cost Of Supplemental Retirement Plan) (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Feb. 03, 2018
Oct. 28, 2017
Jul. 29, 2017
Apr. 29, 2017
Jan. 28, 2017
Oct. 29, 2016
Jul. 30, 2016
Apr. 30, 2016
Feb. 03, 2018
Jan. 28, 2017
Jan. 30, 2016
Settlement charges $ (32) $ (22) $ (51) $ 0 $ (17) $ (62) $ (6) $ (13) $ (105) $ (98) $ 0
Settlement charges $ 32 $ 22 $ 51 $ 0 $ 17 $ 62 $ 6 $ 13 105 98 0
Supplemental Employee Retirement Plan                      
Service cost                 0 0 0
Interest cost                 22 22 31
Amortization of net actuarial (gain) loss                 8 9 10
Amortization of prior service cost                 1 0 0
Total net periodic benefit cost                 31 31 41
Settlement charges                 16 30 0
Net actuarial (gain) loss recognized in OCI before tax                 20 26 (70)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), before Tax                 0 0 0
Amortization of net actuarial loss                 (8) (9) (10)
Amortization of prior service credit                 (1) 0 0
Settlement charges                 (16) (30) 0
Total recognized in other comprehensive income                 (5) (13) (80)
Total recognized in net periodic benefit cost and other comprehensive income                 $ 42 $ 48 $ (39)