Summary of Significant Accounting Policies - Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 03, 2018	Jan. 28, 2017	Jan. 30, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Sales returns reserve	$ 23	$ 28
Deferred revenue	453	418
Deferred revenue, noncurrent	$ 22	$ 34
Percentage of Commissions on Sale of Extended Warranties to Revenue	2.00%	2.20%	2.30%
Profit Share on Sale of Extended Warranties	$ 68	$ 133	$ 158
Gift Card Redeemability, Determination Period	24 months
Revenue Recognition, Milestone Method, Revenue Recognized	$ 40	$ 37	$ 46
Period of Expiration for Customer Loyalty Certificates, Low End of Range	2 months
Period of Expiration for Customer Loyalty Certificates, High End of Range	12 months
Retained Earnings [Member] | Minimum [Member] | Accounting Standards Update 2014-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimate of future ASU adoption cumulative adjustment	$ 75
Retained Earnings [Member] | Maximum [Member] | Accounting Standards Update 2014-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimate of future ASU adoption cumulative adjustment	$ 100