Retirement Benefit Plans (Net Periodic Expense) (Details) - USD ($)
$ in Millions |
2 Months Ended |
3 Months Ended |
9 Months Ended |
|
Jul. 31, 2020 |
Oct. 31, 2020 |
Nov. 02, 2019 |
Oct. 31, 2020 |
Nov. 02, 2019 |
Feb. 01, 2020 |
| Retirement Benefits [Abstract] |
|
|
|
|
|
|
|
| Service cost |
|
|
$ 5.0
|
$ 7.0
|
$ 21.0
|
$ 21.0
|
|
| Interest cost |
|
|
23.0
|
33.0
|
75.0
|
99.0
|
|
| Expected return on plan assets |
|
|
(50.0)
|
(48.0)
|
(151.0)
|
(144.0)
|
|
| Amortization of prior service cost |
[1] |
|
1.0
|
2.0
|
4.0
|
6.0
|
|
| Amortization of net loss |
|
|
0.0
|
0.0
|
1.0
|
0.0
|
|
| Curtailment loss recognized |
|
|
0.0
|
0.0
|
5.0
|
0.0
|
|
| Special termination benefit cost recognized |
|
|
0.0
|
0.0
|
94.0
|
0.0
|
|
| Other components of net periodic pension cost/(income) |
|
|
(10.0)
|
(13.0)
|
44.0
|
(39.0)
|
|
| Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |
|
|
(5.0)
|
(6.0)
|
65.0
|
(18.0)
|
|
| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
|
|
|
|
|
|
|
| Service cost |
|
|
5.0
|
7.0
|
21.0
|
21.0
|
|
| Interest cost |
|
|
23.0
|
33.0
|
75.0
|
99.0
|
|
| Defined Benefit Plan, Expected Return (Loss) on Plan Assets |
|
|
50.0
|
48.0
|
151.0
|
144.0
|
|
| Defined Benefit Plan, Amortization of Prior Service Cost (Credit) |
[1] |
|
1.0
|
2.0
|
4.0
|
6.0
|
|
| Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement |
|
|
16.0
|
0.0
|
16.0
|
0.0
|
|
| Defined Benefit Plan, Amortization of Gain (Loss) |
|
|
0.0
|
0.0
|
(1.0)
|
0.0
|
|
| Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment |
|
|
0.0
|
0.0
|
(5.0)
|
0.0
|
|
| Special termination benefit cost recognized |
|
|
$ 0.0
|
0.0
|
$ 94.0
|
0.0
|
|
| Discount rate |
|
2.64%
|
3.00%
|
|
3.00%
|
|
3.08%
|
| Defined Benefit Plan, Net Periodic Benefit Cost (Credit) |
|
|
$ (5.0)
|
$ (6.0)
|
$ 65.0
|
$ (18.0)
|
|
| Increase (Decrease) in Obligation, Pension and Other Postretirement Benefits |
|
|
215.0
|
|
|
|
|
| Other Benefit Plans |
|
|
|
|
|
|
|
| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
|
|
|
|
|
|
|
| Benefit obligation period increase (decrease) |
|
|
$ 166.0
|
|
|
|
|
| VERP |
|
|
|
|
|
|
|
| Retirement Benefits [Abstract] |
|
|
|
|
|
|
|
| Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |
|
$ 94.0
|
|
|
|
|
|
| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
|
|
|
|
|
|
|
| Defined Benefit Plan, Net Periodic Benefit Cost (Credit) |
|
94.0
|
|
|
|
|
|
| VERP | Primary Pension Plan |
|
|
|
|
|
|
|
| Retirement Benefits [Abstract] |
|
|
|
|
|
|
|
| Curtailment loss recognized |
|
4.0
|
|
|
|
|
|
| Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |
|
85.0
|
|
|
|
|
|
| Defined benefit plan, funded percentage |
|
|
100.00%
|
|
100.00%
|
|
|
| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
|
|
|
|
|
|
|
| Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment |
|
(4.0)
|
|
|
|
|
|
| Defined Benefit Plan, Net Periodic Benefit Cost (Credit) |
|
85.0
|
|
|
|
|
|
| Benefit obligation period increase (decrease) |
|
117.0
|
|
|
|
|
|
| VERP | Supplemental Pension Plan |
|
|
|
|
|
|
|
| Retirement Benefits [Abstract] |
|
|
|
|
|
|
|
| Curtailment loss recognized |
|
1.0
|
|
|
|
|
|
| Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |
|
9.0
|
|
|
|
|
|
| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
|
|
|
|
|
|
|
| Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment |
|
(1.0)
|
|
|
|
|
|
| Defined Benefit Plan, Net Periodic Benefit Cost (Credit) |
|
9.0
|
|
|
|
|
|
| Benefit obligation period increase (decrease) |
|
$ (0.4)
|
|
|
|
|
|
|
|