Equity (Accelerated Share Repurchase) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		12 Months Ended
	Oct. 26, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Oct. 24, 2023
Accelerated Share Repurchases [Line Items]
ASR Aggregate Purchase Price					$ 10,000
Repurchase of Common Stock		$ 12,870	$ 2,803	$ 2,327
Treasury Stock, Common
Accelerated Share Repurchases [Line Items]
Common Stock repurchased		11,490	2,803	2,331
Common Stock [Member]
Accelerated Share Repurchases [Line Items]
Common Stock repurchased		$ 1,500	$ 0	$ 0
October 26, 2023 [Member]
Accelerated Share Repurchases [Line Items]
Repurchase of Common Stock	$ 10,000
Treasury Stock, Shares, Acquired		108.4
Accelerated Share Repurchases, Initial Price Paid Per Share	$ 78.38
October 26, 2023 [Member] | Treasury Stock, Common
Accelerated Share Repurchases [Line Items]
Common Stock repurchased	$ 8,500
October 26, 2023 [Member] | Common Stock [Member]
Accelerated Share Repurchases [Line Items]
Common Stock repurchased	$ 1,500