Summary of Significant Accounting Policies - Basis of Presentation (Details) $ in Millions	12 Months Ended
	Feb. 03, 2018 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	$ (2)
Reporting Lag for Certain Foreign Operations in Financial Statements	1 month
Retained Earnings [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	$ (12)