Supplemental Financial Information - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Supplemental Financial Information [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]		Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)
Net periodic defined benefits expense, non-service cost		$ 542	$ 498	$ 406
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Nonoperating Income (Expense)
Equity method investments carrying value		139
Other Investments
Supplemental Financial Information [Line Items]
Equity investment without readily determinable fair value		91
St. Jude Medical | Equity securities
Supplemental Financial Information [Line Items]
Securities in mutual funds held in a rabbi trust		$ 313	$ 314
Established Pharmaceuticals
Supplemental Financial Information [Line Items]
Gain (loss) on disposal	$ 143
Net assets	28
Foreign currency translation adjustment	$ 116