Equity (Share Repurchases) (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended
	Apr. 30, 2023	Mar. 31, 2023		Mar. 31, 2022
Equity, Class of Treasury Stock [Line Items]
Number of shares repurchased		25,000,000		37,000,000
Cash paid for shares repurchased		$ 3,180		$ 2,846
Average cost per share(a)		$ 126.56	[1]	$ 75.88
Subsequent Event
Equity, Class of Treasury Stock [Line Items]
Number of shares repurchased	910,402
Cash paid for shares repurchased	$ 122

[1] The average cost per share for the 2023 period includes a 1% excise tax on share repurchases resulting from the Inflation Reduction Act of 2022.