Retirement Benefit Plans (Net Periodic Expense) (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
May 02, 2020 |
May 04, 2019 |
|
| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | ||
| Service cost | $ 8 | $ 7 |
| Interest cost | 26 | 33 |
| Expected return on plan assets | (50) | (48) |
| Amortization of prior service cost/(credit) | 1 | 2 |
| Net periodic pension expense/(income) | (15) | (6) |
| Other components of net periodic pension cost/(income) | $ (23) | $ (13) |
| Document Period End Date | May 02, 2020 | |