v3.26.1
Financial Instruments, Derivatives and Fair Value Measures - Schedule of Amounts and Location of Derivative and Non-Derivative Financial Instruments (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Derivatives, Fair Value [Line Items]    
Fair Value - Assets $ 242 $ 108
Fair Value - Liabilities 878 905
Balance Sheet Location [Axis]: us-gaap:DeferredIncomeTaxesAndOtherAssetsNoncurrent | Interest Rate Swap | Fair Value Hedging | Designated as Hedging Instrument    
Derivatives, Fair Value [Line Items]    
Fair Value - Assets 0 0
Balance Sheet Location [Axis]: us-gaap:LongTermDebtNoncurrent | Debt | Net Investment Hedging | Designated as Hedging Instrument    
Derivatives, Fair Value [Line Items]    
Fair Value - Assets 0 0
Fair Value - Liabilities 568 589
Balance Sheet Location [Axis]: us-gaap:OtherAccruedLiabilitiesCurrent | Interest Rate Swap | Fair Value Hedging | Designated as Hedging Instrument    
Derivatives, Fair Value [Line Items]    
Fair Value - Liabilities 12 19
Balance Sheet Location [Axis]: us-gaap:OtherAccruedLiabilitiesCurrent | Foreign Exchange Forward | Designated as Hedging Instrument    
Derivatives, Fair Value [Line Items]    
Fair Value - Liabilities 109 231
Balance Sheet Location [Axis]: us-gaap:OtherAccruedLiabilitiesCurrent | Foreign Exchange Forward | Not Designated as Hedging Instrument    
Derivatives, Fair Value [Line Items]    
Fair Value - Liabilities 89 66
Balance Sheet Location [Axis]: abt:PostEmploymentObligationsDeferredIncomeTaxesAndOtherLongTermLiabilities | Interest Rate Swap | Fair Value Hedging | Designated as Hedging Instrument    
Derivatives, Fair Value [Line Items]    
Fair Value - Liabilities 100 0
Balance Sheet Location [Axis]: abt:PrepaidExpenseAndOtherReceivables | Interest Rate Swap | Fair Value Hedging | Designated as Hedging Instrument    
Derivatives, Fair Value [Line Items]    
Fair Value - Assets 0 0
Balance Sheet Location [Axis]: abt:PrepaidExpenseAndOtherReceivables | Foreign Exchange Forward | Designated as Hedging Instrument    
Derivatives, Fair Value [Line Items]    
Fair Value - Assets 152 57
Balance Sheet Location [Axis]: abt:PrepaidExpenseAndOtherReceivables | Foreign Exchange Forward | Not Designated as Hedging Instrument    
Derivatives, Fair Value [Line Items]    
Fair Value - Assets $ 90 $ 51