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Derivative instruments and hedging activities - Summary of Classification and Fair Values of Derivative Instruments (Detail) - USD ($)
$ in Millions
Sep. 30, 2023
Dec. 31, 2022
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Other Current Assets [Member]    
Derivative [Line Items]    
Asset derivatives $ 0 $ 0
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Other Current Liabilities [Member]    
Derivative [Line Items]    
Liability derivatives 0 0
Designated as Hedging Instrument [Member] | Cross Currency Swap Cash Flow Hedge [Member] | Other Non-current Assets [Member]    
Derivative [Line Items]    
Asset derivatives [1] 14 0
Designated as Hedging Instrument [Member] | Conversion Option [Member]    
Derivative [Line Items]    
Asset derivatives 0 0
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Other Current Assets [Member]    
Derivative [Line Items]    
Asset derivatives 44 29
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Other Current Liabilities [Member]    
Derivative [Line Items]    
Liability derivatives (40) (101)
Not Designated as Hedging Instrument [Member] | Cross Currency Swap Cash Flow Hedge [Member] | Other Non-current Assets [Member]    
Derivative [Line Items]    
Asset derivatives [1] 0 0
Not Designated as Hedging Instrument [Member] | Conversion Option [Member]    
Derivative [Line Items]    
Asset derivatives $ 15 $ 0
[1] On March 31, 2023, Teva entered into a cross-currency interest rate swap agreement, designated as cash flow hedge for accounting purposes with respect to an intercompany loan due October 2026, denominated in Japanese yen.