Pension Benefits - Schedule of Pension Plan Benefits (Details) - Pension Plan - USD ($) $ in Millions	3 Months Ended
	May 04, 2019	May 05, 2018
Net Pension Benefits Expense
Service cost benefits earned	$ 23	$ 24
Interest cost on projected benefit obligation	37	37
Expected return on assets	(62)	(62)
Amortization of losses	16	21
Amortization of prior service cost	(3)	(3)
Total	$ 11	$ 17