Segment Information - Summary of Special Items (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Pre-tax
(Benefits) charges associated with litigation matters (Selling, general and administrative expenses)	$ 201	$ 0	$ 201	$ (28)
(Gain) loss on sale of business	21	(1,735)	21	(1,735)
Integration and transaction-related costs, pre-tax	13	24	20	112
Charge for organizational efficiency plan (Selling, general and administrative expenses)	0	0	0	22
Total impact from special items	235	(1,711)	242	(1,629)
After-tax
(Benefits) charges associated with litigation matters (Selling, general and administrative expenses)	171	0	171	(20)
(Gain) on sale of business	19	(1,388)	19	(1,388)
Integration and transaction-related costs, after-tax	9	23	15	86
Charge for organizational efficiency plan (Selling, general and administrative expenses)	0	0	0	17
Total impact from special items	$ 199	$ (1,365)	$ 205	$ (1,305)