Post-Employment Benefits - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Abbott Stock Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Plan contributions	$ 207	$ 199	$ 190
Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Unfunded commitments to investments in the private funds	0	0
Maximum amount of fund with redemption limit to 25%	$ 300
Maximum redemption fund percentage of 25%	25.00%
Investments subject to a lock	$ 60
Absolute Return Fund
Defined Benefit Plan Disclosure [Line Items]
Unfunded commitments to investments in the private funds	0	0
Private Funds
Defined Benefit Plan Disclosure [Line Items]
Unfunded commitments to investments in the private funds	$ 540	555
Minimum | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Redemption notice period	2 days
Minimum | Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Redemption notice period	2 days
Minimum | Absolute Return Fund
Defined Benefit Plan Disclosure [Line Items]
Redemption notice period	5 days
Maximum | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Redemption notice period	30 days
Maximum | Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Redemption notice period	60 days
Maximum | Absolute Return Fund
Defined Benefit Plan Disclosure [Line Items]
Redemption notice period	90 days
Defined Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan gains (losses) that decreased (increased) the projected benefit obligations	$ 763	(458)
Accumulated benefit obligations	8,700	9,200
Net actuarial gain (loss), net of any prior service credits	971	182	858
Company contributions	349	349
Defined benefit plan, expected contributions	302
Defined Benefit Plans | Foreign Plan
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligations	2,300	2,600
Income recognized from curtailment		15
Medical and Dental Plans
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan gains (losses) that decreased (increased) the projected benefit obligations	33	(35)
Net actuarial gain (loss), net of any prior service credits	36	(33)	$ 374
Company contributions	$ 36	$ 37