Quarterly report pursuant to Section 13 or 15(d)

Retirement Benefit Plans (Net Periodic Expense) (Details)

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Retirement Benefit Plans (Net Periodic Expense) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Aug. 03, 2019
Aug. 04, 2018
Aug. 03, 2019
Aug. 04, 2018
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Service cost $ 7 $ 10 $ 14 $ 19
Interest cost 33 35 66 70
Expected return on plan assets (48) (56) (96) (112)
Amortization of prior service cost/(credit) 2 2 4 4
Net periodic pension expense/(income) (6) (9) (12) (19)
Other components of net periodic pension cost/(income) $ (13) $ (19) $ (26) $ (38)