Repurchase of Common Stock (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Dec. 05, 2018	Nov. 03, 2018	Oct. 28, 2017	Nov. 03, 2018	Oct. 28, 2017	Mar. 01, 2018	Mar. 01, 2017	Feb. 27, 2017	Jun. 30, 2011
Total Share Repurchases [Domain]
Stock Repurchases [Line Items]
Total cost of shares repurchased	$ 168
Number of shares repurchased	2.5
Open market [Domain]
Stock Repurchases [Line Items]
Total cost of shares repurchased		$ 369	$ 366	$ 1,143	$ 1,147
Average price per share		$ 76.04	$ 57.14	$ 74.10	$ 52.35
Number of shares repurchased		4.8	6.4	15.4	21.9
February 2017 share repurchase program [Member]
Stock Repurchases [Line Items]
Stock Repurchase Program, Authorized Amount								$ 5,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount		$ 1,900		$ 1,900
June 2011 share repurchase program [Member}
Stock Repurchases [Line Items]
Stock Repurchase Program, Authorized Amount									$ 5,000
Scenario, Plan [Member]
Stock Repurchases [Line Items]
Stock Repurchase Program, Authorized Amount						$ 1,500
Scenario, Plan [Member] | Adjusted Balance [Member]
Stock Repurchases [Line Items]
Stock Repurchase Program, Authorized Amount						$ 3,500	$ 3,000