Retirement Benefits (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	May 02, 2020	May 04, 2019
Retirement Benefits Disclosure [Line Items]
Expense related to the qualified plan	$ 21	$ 19
Other Pension Plans, Postretirement or Supplemental Plans, Defined Benefit [Member]
Retirement Benefits Disclosure [Line Items]
Expense related to non-qualified plan	$ 6