Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Aug. 01, 2020	Jul. 31, 2021	Aug. 01, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ 345	$ (431)	$ 448	$ (4,012)
Actuarial gain on post employment and postretirement benefit plans, before tax	63	19	63	19
Amortization of net actuarial loss and prior service credit on post employment and postretirement benefit plans included in net income (loss), before tax	9	11	19	23
Settlement charges, before tax	81	38	81	38
Tax effect related to items of other comprehensive income	(38)	(17)	(40)	(20)
Total other comprehensive income, net of tax effect	115	51	123	60
Comprehensive income (loss)	$ 460	$ (380)	$ 571	$ (3,952)