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Supplemental Financial Information - Narrative (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Jun. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Condensed Cash Flow Statements, Captions [Line Items]
Net earnings allocated to common shares	$ 1,600	$ 1,600		$ 4,700	$ 4,200
Payment of cash taxes				1,500	1,200
Equity method investments carrying value	163			163
Other
Condensed Cash Flow Statements, Captions [Line Items]
Equity investment without readily determinable fair value	118			118
St Jude Medical | Equity securities
Condensed Cash Flow Statements, Captions [Line Items]
Securities in mutual funds held in a rabbi trust	$ 325			325
Defined Benefit Plans
Condensed Cash Flow Statements, Captions [Line Items]
Pension contributions				$ 256	298
Established Pharmaceuticals
Condensed Cash Flow Statements, Captions [Line Items]
Loss on disposal			$ 143
Net assets			28
Foreign currency translation adjustment			$ 116		$ 116

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