Pension Benefits - Schedule of Net Pension and Postretirement Health Care Benefits Expense (Details) - Pension Plan - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Nov. 03, 2018	Oct. 28, 2017	Nov. 03, 2018	Oct. 28, 2017
Net Pension Benefits Expense
Service cost	$ 24	$ 21	$ 72	$ 63
Interest cost	37	34	110	103
Expected return on assets	(62)	(61)	(185)	(184)
Amortization of losses	20	15	61	45
Amortization of prior service cost	(3)	(3)	(8)	(8)
Settlement charges	(1)	0	(4)	0
Total	$ 17	$ 6	$ 54	$ 19