Goodwill and Intangible Assets Goodwill and Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Nov. 03, 2018	Oct. 28, 2017	Nov. 03, 2018	Oct. 28, 2017	Feb. 03, 2018
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated amortization	$ 6		$ 6
Finite-Lived Intangible Assets, Gross carrying amount	371		371
Goodwill	921	$ 425	921	$ 425	$ 425
Indefinite-lived tradename included in Other assets	18	18	18	18	18
Goodwill, Gross carrying amount	1,596	1,100	1,596	1,100	1,100
Goodwill, Cumulative impairment	675	675	675	675	$ 675
Amortization of Intangible Assets	6	$ 0	6	$ 0
Finite-Lived Intangible Assets, Amortization Expense, Remainder of fiscal 2019	17		17
Finite-Lived Intangible Assets, Amortization Expense, Fiscal 2020	67		67
Finite-Lived Intangible Assets, Amortization Expense, Fiscal 2021	67		67
Finite-Lived Intangible Assets, Amortization Expense, Fiscal 2022	67		67
Finite-Lived Intangible Assets, Amortization Expense, Fiscal 2023 and thereafter	147		147
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated amortization	4		4
Finite-Lived Intangible Assets, Gross carrying amount	258		258
Tradename
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated amortization	1		1
Finite-Lived Intangible Assets, Gross carrying amount	61		61
Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated amortization	1		1
Finite-Lived Intangible Assets, Gross carrying amount	$ 52		$ 52