Retirement Benefit Plans (Obligations and Funded Status) (Details) - USD ($)
$ in Millions |
3 Months Ended |
12 Months Ended |
Apr. 29, 2017 |
Feb. 02, 2019 |
Feb. 03, 2018 |
| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
|
|
|
|
|
| Prepaid pension |
|
|
$ 147
|
$ 61
|
[1] |
| Change in APBO |
|
|
|
|
|
| Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits |
|
$ 112
|
|
|
|
| Change in fair value of plan assets |
|
|
|
|
|
| Increase/(Decrease) in funded status of plan |
|
|
$ (86)
|
|
|
| Actual return on plan assets (percent) |
|
|
(0.20%)
|
|
|
| Cumulative return on plan assets since inception (percent) |
|
|
8.80%
|
|
|
| Pension Plan [Member] |
|
|
|
|
|
| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
|
|
|
|
|
| Prepaid pension |
|
|
$ 147
|
61
|
|
| Funded status of the plan (percent) |
|
|
105.00%
|
|
|
| Change in APBO |
|
|
|
|
|
| Beginning balance |
|
3,473
|
$ 3,467
|
3,473
|
|
| Service cost |
|
|
37
|
42
|
|
| Interest cost |
|
|
133
|
143
|
|
| Actuarial loss/(gain) |
|
|
(289)
|
126
|
|
| Balance at measurement date |
|
|
3,016
|
3,467
|
|
| Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits |
|
|
0
|
88
|
|
| Change in fair value of plan assets |
|
|
|
|
|
| Beginning Balance |
|
3,455
|
3,528
|
3,455
|
|
| Company contributions |
|
|
0
|
0
|
|
| Actual return on assets |
[2] |
|
(33)
|
451
|
|
| Balance at measurement date |
|
|
3,163
|
3,528
|
|
| Funded status of the plan |
[3] |
|
147
|
61
|
|
| Settlements |
|
|
(174)
|
(217)
|
|
| Curtailments |
|
|
0
|
(27)
|
|
| Defined Benefit Plan, Benefit Obligation, Benefits Paid |
|
|
158
|
161
|
|
| Supplemental Employee Retirement Plan [Member] |
|
|
|
|
|
| Change in APBO |
|
|
|
|
|
| Beginning balance |
|
152
|
182
|
152
|
|
| Service cost |
|
|
1
|
0
|
|
| Interest cost |
|
|
8
|
7
|
|
| Actuarial loss/(gain) |
|
|
(12)
|
31
|
|
| Balance at measurement date |
|
|
146
|
182
|
|
| Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits |
|
|
0
|
24
|
|
| Change in fair value of plan assets |
|
|
|
|
|
| Beginning Balance |
|
$ 0
|
0
|
0
|
|
| Company contributions |
|
|
33
|
35
|
|
| Actual return on assets |
|
|
0
|
0
|
|
| Balance at measurement date |
|
|
0
|
0
|
|
| Funded status of the plan |
[4] |
|
(146)
|
(182)
|
|
| Settlements |
|
|
0
|
0
|
|
| Curtailments |
|
|
0
|
3
|
|
| Defined Benefit Plan, Benefit Obligation, Benefits Paid |
|
|
33
|
35
|
|
| Current Portion of Pension Plan Liability Accrued |
|
|
$ 30
|
$ 29
|
|
|
|