Goodwill and Other Intangibles (Changes in the Carrying Amount of Goodwill) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Goodwill [Roll Forward]
Balance as of January 1,	$ 16,317	$ 15,517
Goodwill acquired	104	338
Other adjustments	(458)	(80)
Balance at June 30,	$ 15,963	$ 15,775