Shareholders' Equity - ASR Agreement (Details) - USD ($) shares in Millions	3 Months Ended									12 Months Ended
	Nov. 01, 2019	Aug. 02, 2019	May 03, 2019	Feb. 01, 2019	Nov. 02, 2018	Aug. 03, 2018	Nov. 03, 2017	Aug. 04, 2017	May 05, 2017	Jan. 31, 2020	Feb. 01, 2019	Feb. 02, 2018
Share Repurchases
ASR Agreement Amount	$ 397,000,000	$ 990,000,000	$ 350,000,000	$ 270,000,000	$ 310,000,000	$ 550,000,000	$ 250,000,000	$ 500,000,000	$ 500,000,000
Cash Payment Received at Settlement	$ 103,000,000	$ 420,000,000	$ 150,000,000
Initial Shares Delivered (in shares)	2.8	8.9	2.9	2.6	2.5	4.8	2.9	5.2	5.3
Additional Shares Delivered at Settlement (in shares)	0.8	1.0	0.3	0.3	0.3	0.8	0.3	1.2	0.8
Total Shares Delivered (in shares)	3.6	9.9	3.2	2.9	2.8	5.6	3.2	6.4	6.1
Share repurchases, shares										41.3	31.7	39.6
Share repurchases, value										$ 4,325,000,000	$ 3,045,000,000	$ 3,174,000,000
Share Repurchase Program
Share Repurchases
Share repurchases, shares										41.0	31.2	39.1
Share repurchases, value										$ 4,288,000,000	$ 2,999,000,000	$ 3,133,000,000
Shares withheld from employess
Share Repurchases
Share repurchases, shares										0.3	0.5	0.5
Share repurchases, value										$ 37,000,000	$ 46,000,000	$ 41,000,000
Minimum
Share Repurchases
Notional Amount	$ 350,000,000	$ 990,000,000	$ 350,000,000
Maximum
Share Repurchases
Notional Amount	$ 500,000,000	$ 1,410,000,000	$ 500,000,000
Retained Earnings
Share Repurchases
Share repurchases, value										$ 4,090,000,000	$ 2,820,000,000	$ 2,939,000,000