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

X

- Definition

Deferred Tax Asset Unrecognized Tax Benefits

+ References

No definition available.

+ Details

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

X

- Definition

Deferred Tax Assets Liabilities Net [Line Items]

+ References

No definition available.

+ Details

Name:	teva_DeferredTaxAssetsLiabilitiesNetLineItems
Namespace Prefix:	teva_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration