Pension Benefits - Schedule of Pension Plan Benefits (Details) - Pension Plan - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Aug. 03, 2019	Aug. 04, 2018	Aug. 03, 2019	Aug. 04, 2018
Net Pension Benefits Expense
Service cost benefits earned	$ 23	$ 25	$ 46	$ 49
Interest cost on projected benefit obligation	37	37	74	73
Expected return on assets	(62)	(62)	(124)	(123)
Amortization of losses	16	20	31	41
Amortization of prior service cost	(3)	(3)	(5)	(6)
Settlement charges	0	3	0	3
Total	$ 11	$ 20	$ 22	$ 37