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Debt Obligations - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2019
Apr. 30, 2019
Dec. 31, 2018
Nov. 30, 2015
Debt Instrument [Line Items]        
Revolving credit facility   $ 2,300   $ 3,000
Senior notes $ 28,188   $ 28,483  
Debt instrument redeemed amount $ 2,300      
Long term debt currency portion USD 66.00%      
Long term debt currency portion EUR 31.00%      
Long term debt currency portion CHF 3.00%      
'Senior notes USD 1,700 million [Member]        
Debt Instrument [Line Items]        
Senior notes [1] $ 1,574   $ 1,700  
Weighted average interest rate [1] 1.70%      
Debt Instrument Maturity Year [1] 2019      
'Senior notes USD 1,700 million [Member] | Senior Notes [Member]        
Debt Instrument [Line Items]        
Debt instrument redeemed amount $ 126      
[1] During the first quarter of 2019, Teva repurchased and canceled approximately $126 million principal amount of its $1,700 million 1.7% senior notes due in July 2019.