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Derivative Instruments and Hedging Activities - Summary of Pre-tax (Gains) Losses From Derivatives Designated in Cash Flow Hedging Relationships (Detail) - Designated as Hedging Instrument [Member] - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Other Comprehensive Income [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Other comprehensive income (loss) |  | $ (508) | $ 91 | $ (270)
Financial expenses [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Financial expenses, net |  | 981 | 1,057 | 966
Cross Currency Swap Cash Flow Hedge [Member] | Other Comprehensive Income [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Other comprehensive income (loss) | [1] | 1 | 1 | 0
Cross Currency Swap Cash Flow Hedge [Member] | Financial expenses [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Financial expenses, net | [1] | $ (8) | $ (11) | $ 0
[1] | On March 31, 2023, Teva entered into a cross-currency interest rate swap agreement, designated as cash flow hedge for accounting purposes with respect to an intercompany loan due October 2026, denominated in Japanese yen. The agreement was terminated in the first quarter of 2024 and resulted in cash proceeds of $16 million.

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- Definition 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 + Details
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- Definition Amount of unrealized gain (loss) related to derivatives designated as cash flow hedging instruments, recorded in results of operations to the extent that the cash flow hedge is determined to be ineffective. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4C -Subparagraph (d)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4C + Details
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