Stockholders' Equity (Stock Repurchase Program) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
	May 01, 2020	May 03, 2019
Class of Stock [Line Items]
Aggregate purchase price	$ 181	$ 591
Class A Common Stock
Class of Stock [Line Items]
Aggregate purchase price	$ 181	$ 591
Class A common shares repurchased (in shares)	1,540	3,264
Weighted-average price per share (in USD per share)	$ 117.52	$ 180.96
August 2017 Stock Repurchase Program | Class A Common Stock
Class of Stock [Line Items]
Authorized repurchase amount under stock repurchase program		$ 1,500
Remaining authorized repurchase amount	$ 819