Shareholders' Equity and Dividend Availability (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Apr. 30, 2021
Stockholders' Equity Note [Abstract]
Number of authorized shares (in shares)	1,755.0
Number of authorized shares, preferred shares (in shares)	5.0
Number of authorized shares, voting common stock (in shares)	1,745.0
Number of authorized shares, undesignated shares (in shares)	5.0
Additional share repurchase authorization			$ 5,000
Number of shares repurchased under share repurchase authorization (in shares)	11.6
Cost of shares repurchased under share repurchase authorization	$ 2,000
Average cost per share repurchased under share repurchase authorization (in dollars per share)	$ 172.82
Remaining capacity under share repurchase authorization	$ 2,000
Cost of shares acquired to cover tax withholding costs and exercise costs	$ 61	$ 44