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Significant Accounting Policies - Additional information (Detail) - USD ($)
shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 17, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Significant Accounting Policies [Line Items]          
Cash deposited with financially sound European us and Israeli banks and financial institutions     $ 2,030    
Percentage of consolidated sales in North America     47.00%    
Shipping and handling costs, which are included in selling and marketing expenses     $ 138 $ 159 $ 164
Advertising expense     213 256 318
Ordinary shares issued upon mandatory conversion of preferred shares 70.6 70.6      
Operating lease right-of-use assets     514    
Operating lease liability     $ 553    
Operating leases rent expense net       175 200
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.    
Royalty income     $ 147 $ 165 $ 327
Accounting Standards Update 2016-02 [Member]          
Significant Accounting Policies [Line Items]          
Operating lease right-of-use assets     553    
Operating lease liability     $ 561    
Building [Member]          
Significant Accounting Policies [Line Items]          
Property plant and equipment useful life     40 years    
Minimum [Member]          
Significant Accounting Policies [Line Items]          
Credit terms to customers     30 days    
Operating Lease Remaining Lease Term     1 year    
Minimum [Member] | Other Machinery and Equipment [Member]          
Significant Accounting Policies [Line Items]          
Property plant and equipment useful life     15 years    
Minimum [Member] | Other Capitalized Property Plant and Equipment [Member]          
Significant Accounting Policies [Line Items]          
Property plant and equipment useful life     5 years    
Maximum [Member]          
Significant Accounting Policies [Line Items]          
Credit terms to customers     90 days    
Operating Lease Remaining Lease Term     80 years    
Maximum [Member] | Other Machinery and Equipment [Member]          
Significant Accounting Policies [Line Items]          
Property plant and equipment useful life     20 years    
Maximum [Member] | Other Capitalized Property Plant and Equipment [Member]          
Significant Accounting Policies [Line Items]          
Property plant and equipment useful life     10 years