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Leases - Additional Information (Detail) - USD ($)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Mar. 31, 2019
Operating leases rent expense net   $ 90 $ 175  
Operating Lease description Teva determines if an arrangement is a lease at inception. Lease classification is governed by five criteria in ASC 842-10-25-2. If any of these five criteria is met, Teva classifies the lease as a finance lease. Otherwise, Teva classifies the lease as an operating lease. When determining lease classification, Teva’s approach in assessing two of the mentioned criteria is: (i) generally 75% or more of the remaining economic life of the underlying asset is a major part of the remaining economic life of that underlying asset; and (ii) generally 90% or more of the fair value of the underlying asset comprises substantially all of the fair value of the underlying asset.      
Lessee Operating Lease Not Yet Commenced $ 94      
Term of contract, operating leases not yet commenced       2020 years
Lessee Operating Lease Option To Extend Term 15 years      
Finance Lease, Right-of-Use Asset $ 78      
Finance Lease, Liability $ 27      
Maximum [Member]        
Operating lease remaining lease term 80 years      
Term of contract, operating leases not yet commenced 12 years      
Minimum [Member]        
Operating lease remaining lease term 1 year      
Term of contract, operating leases not yet commenced 9 years      
Leasehold Improvements [Member] | Maximum [Member]        
Capitalized land lease estimated useful lives maximum 99 years      
Leasehold Improvements [Member] | Minimum [Member]        
Capitalized land lease estimated useful lives maximum 30 years