Pension (Net Benefit Expense (Income)) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2020	Nov. 02, 2019	Oct. 31, 2020	Nov. 02, 2019
Pension [Abstract]
Service cost	$ 3	$ 5	$ 10	$ 15
Interest cost	5	7	16	20
Expected return on plan assets	(9)	(9)	(28)	(27)
Amortization of net loss (gain)	3	3	9	9
Net benefit expense (income)	$ 2	$ 6	$ 7	$ 17