Benefit Plans (Net Periodic Benefit Cost) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Nov. 02, 2019	Nov. 03, 2018	Nov. 02, 2019	Nov. 03, 2018
Total Retirement Expense	$ 19	$ 17	$ 58	$ 46
Settlement charges	12	23	12	73
Nonqualified Plan [Member]
Defined contribution plans expense	0	0	2	1
Qualified Plan [Member]
Defined contribution plans expense	25	24	74	71
Pension Plan [Member]
Service cost	2	1	4	4
Interest cost	26	28	78	81
Expected return on assets	(48)	(51)	(144)	(157)
Recognition of net actuarial (gain) loss	7	7	21	23
Amortization of prior service credit	0	0	0	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	(13)	(15)	(41)	(49)
Supplemental Employee Retirement Plan [Member]
Service cost	0	0	0	0
Interest cost	5	6	17	17
Recognition of net actuarial (gain) loss	2	2	6	6
Amortization of prior service credit	0	0	0	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	7	8	23	23
Other Postretirement Benefits Plan [Member]
Service cost	0	0	0	0
Interest cost	1	1	3	3
Recognition of net actuarial (gain) loss	(1)	(2)	(4)	(4)
Amortization of prior service credit	0	0	0	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	$ 0	$ (1)	$ (1)	$ (1)