Post-Employment Benefits - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Abbott Stock Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Plan contributions	$ 199	$ 190	$ 181
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 33%	280
Maximum amount of fund with redemption limit to 25%	$ 250
Maximum redemption fund percentage of 33%	33.00%
Maximum redemption fund percentage of 25%	25.00%
Investments subject to a lock	$ 80
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	$ 555	569
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	45 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	$ (458)	3,645
Accumulated benefit obligations	9,200	8,400
Net actuarial gain (loss), net of any prior service credits	182	858	1,140
Company contributions	349	413
Defined benefit plan, expected contributions	350
Defined Benefit Plans | Foreign Plan
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligations	2,600	2,200
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	(35)	437
Net actuarial gain (loss), net of any prior service credits	(33)	374	$ 45
Company contributions	$ 37	$ 35