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Revenue from Contracts with Customers - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2020
United States [Member]
Revenue Recognition [Line Items]
Percentage sales reserves and allowances to U.S. customers	79.00%

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- Definition

Revenue Recognition [Line Items]

+ References

No definition available.

+ Details

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Period Type:	duration

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- Definition

Sales reserves and allowances to customers percentage.

+ References

No definition available.

+ Details

Name:	teva_SalesReservesAndAllowancesToCustomersPercentage
Namespace Prefix:	teva_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

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- Details

Name:	srt_StatementGeographicalAxis=country_US
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: