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Derivative Instruments and Hedging Activities - Summary of Pre-tax (Gains) Losses From Derivatives Designated in Cash Flow Hedging Relationships (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Derivative [Line Items]
Financial expenses, net	[1]	$ (4)	$ 0	$ 12	$ (8)
Other comprehensive income (loss)	[1]	(1)	0	0	1
Other Comprehensive Income [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Other comprehensive income (loss)		(44)	180	700	(75)
Financial expenses [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Financial expenses, net		$ 237	$ 272	$ 714	$ 763
[1] In May 2025, Teva entered into a $500 million notional amount of fixed to fixed cross-currency interest rate swaps relating to its 5.75% senior notes due 2030 to hedge the foreign currency exchange risk of future principal and interest payments associated with the USD denominated notes. The cross-currency swaps synthetically convert part of the USD debt into CHF, aligning debt servicing costs with Teva’s inflows and reducing economic volatility. These swaps have been designated as cash flow hedges and the gain or loss on these swaps will be reported as a component of other comprehensive income and reclassified into earnings in each period during which the swaps affect earnings in the same line item associated with the USD denominated bonds.

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Unrealized gain (loss) on cash flow hedging instrument.

+ References

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 20
-Name Accounting Standards Codification
-Section 25
-Paragraph 6A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480682/815-20-25-6A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480237/815-40-50-5

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Amount, before tax and after reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness, attributable to parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 11
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-11

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