Supplemental Financial Information - Other Accrued Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Disclosure Text Block Supplement [Abstract]
Accrued rebates payable to government agencies	$ 650	$ 638
Accrued other rebates	1,091	1,087
All other	3,681	4,120
Total	5,422	5,845
Accrued wholesaler chargeback rebates	$ 232	$ 234