Goodwill and Other Intangibles (Changes in the Carrying Amount of Goodwill) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Goodwill [Roll Forward]
Balance as of January 1,	$ 16,251	$ 16,317
Goodwill acquired	236	104
Other adjustments	134	(458)
Balance at June 30,	$ 16,621	$ 15,963