Benefit Plans (Net Periodic Benefit Cost) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Aug. 01, 2020	Aug. 03, 2019	Aug. 01, 2020	Aug. 03, 2019
Total Retirement Expense	$ 10	$ 19	$ 15	$ 39
Settlement charges	38	0	38	0
Nonqualified Plan [Member]
Defined contribution plans expense	0	1	0	2
Qualified Plan [Member]
Defined contribution plans expense	19	24	32	49
Pension Plan [Member]
Service cost	2	1	3	2
Interest cost	18	26	38	52
Expected return on assets	(46)	(48)	(92)	(96)
Recognition of net actuarial (gain) loss	10	7	20	14
Amortization of prior service credit	0	0	0	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	(16)	(14)	(31)	(28)
Supplemental Employee Retirement Plan [Member]
Service cost	0	0	0	0
Interest cost	4	6	8	12
Recognition of net actuarial (gain) loss	3	2	6	4
Amortization of prior service credit	0	0	0	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	7	8	14	16
Other Postretirement Benefits Plan [Member]
Service cost	0	0	0	0
Interest cost	1	1	2	2
Recognition of net actuarial (gain) loss	(2)	(2)	(3)	(3)
Amortization of prior service credit	0	0	0	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	$ (1)	$ (1)	$ (1)	$ (1)