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v3.20.4

Income Taxes - Schedule of Defered Income Taxes (Parenthetical) (Detail) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
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Deferred Tax Assets Liabilities Net [Line Items] |  |
Unrecognized tax benefits | $ 63 | $ 115

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Namespace Prefix: | teva_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Deferred Tax Assets Liabilities Net [Line Items] + References No definition available. + Details
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Namespace Prefix: | teva_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration