Shareholders' Equity Repurchase of Common Stock (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	2 Months Ended	12 Months Ended
	Mar. 26, 2019	Feb. 02, 2019	Feb. 03, 2018	Jan. 28, 2017	Jan. 30, 2016	Feb. 27, 2019	Feb. 27, 2017
Stock Repurchases [Line Items]
Accelerated Share Repurchase Price (low end of the range)		$ 150
Accelerated Share Repurchase Price (high end of the range)		$ 175
Prepaid repurchase of common stock					$ 55
Accelerated Share Repurchase Settlement Amount				$ 165
Stock Repurchased and Retired at ASR Settlement, Shares		1.6
Accelerated Share Repurchases, Description of Adjustment to Initial Price Paid		$ 10
February 2017 share repurchase program [Member]
Stock Repurchases [Line Items]
Stock Repurchase Program, Authorized Amount							$ 5,000
Open market [Domain]
Stock Repurchases [Line Items]
Stock Repurchased and Retired During Period, Value		$ 1,493	$ 2,009	$ 706
Average price per share		$ 70.28	$ 57.16	$ 36.11
Number of share repurchased and retired		21.2	35.1	19.5
Total share repurchases [Domain]
Stock Repurchases [Line Items]
Stock Repurchased and Retired During Period, Value		$ 1,493	$ 2,009	$ 751
Average price per share		$ 70.28	$ 57.16	$ 33.54
Number of share repurchased and retired		21.2	35.1	21.1
January 2016 ASR [Domain]
Stock Repurchases [Line Items]
Stock Repurchased and Retired During Period, Value		$ 0	$ 0	$ 45
Average price per share		$ 0	$ 0.00	$ 28.55
Number of share repurchased and retired		0.0	0.0	1.6
Total share repurchases [Domain]
Stock Repurchases [Line Items]
Stock Repurchased and Retired During Period, Value	$ 62
Number of share repurchased and retired	0.9
Total share repurchases [Domain] | February 2019 share repurchase program [Domain]
Stock Repurchases [Line Items]
Stock Repurchase Program, Authorized Amount						$ 3,000